]> bbs.cooldavid.org Git - net-next-2.6.git/blame - fs/Kconfig
reiserfs: run scripts/Lindent on reiserfs code
[net-next-2.6.git] / fs / Kconfig
CommitLineData
1da177e4
LT
1#
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
b84c2157 32 select FS_POSIX_ACL
1da177e4
LT
33 help
34 Posix Access Control Lists (ACLs) support permissions for users and
35 groups beyond the owner/group/world scheme.
36
37 To learn more about Access Control Lists, visit the Posix ACLs for
38 Linux website <http://acl.bestbits.at/>.
39
40 If you don't know what Access Control Lists are, say N
41
42config EXT2_FS_SECURITY
43 bool "Ext2 Security Labels"
44 depends on EXT2_FS_XATTR
45 help
46 Security labels support alternative access control models
47 implemented by security modules like SELinux. This option
48 enables an extended attribute handler for file security
49 labels in the ext2 filesystem.
50
51 If you are not using a security module that requires using
52 extended attributes for file security labels, say N.
53
6d79125b
CO
54config EXT2_FS_XIP
55 bool "Ext2 execute in place support"
56 depends on EXT2_FS
57 help
58 Execute in place can be used on memory-backed block devices. If you
59 enable this option, you can select to mount block devices which are
60 capable of this feature without using the page cache.
61
62 If you do not use a block device that is capable of using this,
63 or if unsure, say N.
64
65config FS_XIP
66# execute in place
67 bool
68 depends on EXT2_FS_XIP
69 default y
70
1da177e4
LT
71config EXT3_FS
72 tristate "Ext3 journalling file system support"
73 help
74 This is the journaling version of the Second extended file system
75 (often called ext3), the de facto standard Linux file system
76 (method to organize files on a storage device) for hard disks.
77
78 The journaling code included in this driver means you do not have
79 to run e2fsck (file system checker) on your file systems after a
80 crash. The journal keeps track of any changes that were being made
81 at the time the system crashed, and can ensure that your file system
82 is consistent without the need for a lengthy check.
83
84 Other than adding the journal to the file system, the on-disk format
85 of ext3 is identical to ext2. It is possible to freely switch
86 between using the ext3 driver and the ext2 driver, as long as the
87 file system has been cleanly unmounted, or e2fsck is run on the file
88 system.
89
90 To add a journal on an existing ext2 file system or change the
91 behavior of ext3 file systems, you can use the tune2fs utility ("man
92 tune2fs"). To modify attributes of files and directories on ext3
93 file systems, use chattr ("man chattr"). You need to be using
94 e2fsprogs version 1.20 or later in order to create ext3 journals
95 (available at <http://sourceforge.net/projects/e2fsprogs/>).
96
97 To compile this file system support as a module, choose M here: the
98 module will be called ext3. Be aware however that the file system
99 of your root partition (the one containing the directory /) cannot
100 be compiled as a module, and so this may be dangerous.
101
102config EXT3_FS_XATTR
103 bool "Ext3 extended attributes"
104 depends on EXT3_FS
105 default y
106 help
107 Extended attributes are name:value pairs associated with inodes by
108 the kernel or by users (see the attr(5) manual page, or visit
109 <http://acl.bestbits.at/> for details).
110
111 If unsure, say N.
112
113 You need this for POSIX ACL support on ext3.
114
115config EXT3_FS_POSIX_ACL
116 bool "Ext3 POSIX Access Control Lists"
117 depends on EXT3_FS_XATTR
b84c2157 118 select FS_POSIX_ACL
1da177e4
LT
119 help
120 Posix Access Control Lists (ACLs) support permissions for users and
121 groups beyond the owner/group/world scheme.
122
123 To learn more about Access Control Lists, visit the Posix ACLs for
124 Linux website <http://acl.bestbits.at/>.
125
126 If you don't know what Access Control Lists are, say N
127
128config EXT3_FS_SECURITY
129 bool "Ext3 Security Labels"
130 depends on EXT3_FS_XATTR
131 help
132 Security labels support alternative access control models
133 implemented by security modules like SELinux. This option
134 enables an extended attribute handler for file security
135 labels in the ext3 filesystem.
136
137 If you are not using a security module that requires using
138 extended attributes for file security labels, say N.
139
140config JBD
141# CONFIG_JBD could be its own option (even modular), but until there are
142# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
143# dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
144 tristate
145 default EXT3_FS
146 help
147 This is a generic journaling layer for block devices. It is
148 currently used by the ext3 file system, but it could also be used to
149 add journal support to other file systems or block devices such as
150 RAID or LVM.
151
152 If you are using the ext3 file system, you need to say Y here. If
153 you are not using ext3 then you will probably want to say N.
154
155 To compile this device as a module, choose M here: the module will be
156 called jbd. If you are compiling ext3 into the kernel, you cannot
157 compile this code as a module.
158
159config JBD_DEBUG
160 bool "JBD (ext3) debugging support"
161 depends on JBD
162 help
163 If you are using the ext3 journaled file system (or potentially any
164 other file system/device using JBD), this option allows you to
165 enable debugging output while the system is running, in order to
166 help track down any problems you are having. By default the
167 debugging output will be turned off.
168
169 If you select Y here, then you will be able to turn on debugging
170 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
171 1 and 5, the higher the number, the more debugging output is
172 generated. To turn debugging off again, do
173 "echo 0 > /proc/sys/fs/jbd-debug".
174
175config FS_MBCACHE
176# Meta block cache for Extended Attributes (ext2/ext3)
177 tristate
178 depends on EXT2_FS_XATTR || EXT3_FS_XATTR
179 default y if EXT2_FS=y || EXT3_FS=y
180 default m if EXT2_FS=m || EXT3_FS=m
181
182config REISERFS_FS
183 tristate "Reiserfs support"
184 help
185 Stores not just filenames but the files themselves in a balanced
186 tree. Uses journaling.
187
188 Balanced trees are more efficient than traditional file system
189 architectural foundations.
190
191 In general, ReiserFS is as fast as ext2, but is very efficient with
192 large directories and small files. Additional patches are needed
193 for NFS and quotas, please see <http://www.namesys.com/> for links.
194
195 It is more easily extended to have features currently found in
196 database and keyword search systems than block allocation based file
197 systems are. The next version will be so extended, and will support
198 plugins consistent with our motto ``It takes more than a license to
199 make source code open.''
200
201 Read <http://www.namesys.com/> to learn more about reiserfs.
202
203 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
204
205 If you like it, you can pay us to add new features to it that you
206 need, buy a support contract, or pay us to port it to another OS.
207
208config REISERFS_CHECK
209 bool "Enable reiserfs debug mode"
210 depends on REISERFS_FS
211 help
212 If you set this to Y, then ReiserFS will perform every check it can
213 possibly imagine of its internal consistency throughout its
214 operation. It will also go substantially slower. More than once we
215 have forgotten that this was on, and then gone despondent over the
216 latest benchmarks.:-) Use of this option allows our team to go all
217 out in checking for consistency when debugging without fear of its
218 effect on end users. If you are on the verge of sending in a bug
219 report, say Y and you might get a useful error message. Almost
220 everyone should say N.
221
222config REISERFS_PROC_INFO
223 bool "Stats in /proc/fs/reiserfs"
224 depends on REISERFS_FS
225 help
226 Create under /proc/fs/reiserfs a hierarchy of files, displaying
227 various ReiserFS statistics and internal data at the expense of
228 making your kernel or module slightly larger (+8 KB). This also
229 increases the amount of kernel memory required for each mount.
230 Almost everyone but ReiserFS developers and people fine-tuning
231 reiserfs or tracing problems should say N.
232
233config REISERFS_FS_XATTR
234 bool "ReiserFS extended attributes"
235 depends on REISERFS_FS
236 help
237 Extended attributes are name:value pairs associated with inodes by
238 the kernel or by users (see the attr(5) manual page, or visit
239 <http://acl.bestbits.at/> for details).
240
241 If unsure, say N.
242
243config REISERFS_FS_POSIX_ACL
244 bool "ReiserFS POSIX Access Control Lists"
245 depends on REISERFS_FS_XATTR
b84c2157 246 select FS_POSIX_ACL
1da177e4
LT
247 help
248 Posix Access Control Lists (ACLs) support permissions for users and
249 groups beyond the owner/group/world scheme.
250
251 To learn more about Access Control Lists, visit the Posix ACLs for
252 Linux website <http://acl.bestbits.at/>.
253
254 If you don't know what Access Control Lists are, say N
255
256config REISERFS_FS_SECURITY
257 bool "ReiserFS Security Labels"
258 depends on REISERFS_FS_XATTR
259 help
260 Security labels support alternative access control models
261 implemented by security modules like SELinux. This option
262 enables an extended attribute handler for file security
263 labels in the ReiserFS filesystem.
264
265 If you are not using a security module that requires using
266 extended attributes for file security labels, say N.
267
268config JFS_FS
269 tristate "JFS filesystem support"
270 select NLS
271 help
272 This is a port of IBM's Journaled Filesystem . More information is
273 available in the file <file:Documentation/filesystems/jfs.txt>.
274
275 If you do not intend to use the JFS filesystem, say N.
276
277config JFS_POSIX_ACL
278 bool "JFS POSIX Access Control Lists"
279 depends on JFS_FS
b84c2157 280 select FS_POSIX_ACL
1da177e4
LT
281 help
282 Posix Access Control Lists (ACLs) support permissions for users and
283 groups beyond the owner/group/world scheme.
284
285 To learn more about Access Control Lists, visit the Posix ACLs for
286 Linux website <http://acl.bestbits.at/>.
287
288 If you don't know what Access Control Lists are, say N
289
290config JFS_SECURITY
291 bool "JFS Security Labels"
292 depends on JFS_FS
293 help
294 Security labels support alternative access control models
295 implemented by security modules like SELinux. This option
296 enables an extended attribute handler for file security
297 labels in the jfs filesystem.
298
299 If you are not using a security module that requires using
300 extended attributes for file security labels, say N.
301
302config JFS_DEBUG
303 bool "JFS debugging"
304 depends on JFS_FS
305 help
306 If you are experiencing any problems with the JFS filesystem, say
307 Y here. This will result in additional debugging messages to be
308 written to the system log. Under normal circumstances, this
309 results in very little overhead.
310
311config JFS_STATISTICS
312 bool "JFS statistics"
313 depends on JFS_FS
314 help
315 Enabling this option will cause statistics from the JFS file system
316 to be made available to the user in the /proc/fs/jfs/ directory.
317
318config FS_POSIX_ACL
319# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
320#
321# NOTE: you can implement Posix ACLs without these helpers (XFS does).
322# Never use this symbol for ifdefs.
323#
324 bool
b84c2157 325 default n
1da177e4
LT
326
327source "fs/xfs/Kconfig"
328
329config MINIX_FS
330 tristate "Minix fs support"
331 help
332 Minix is a simple operating system used in many classes about OS's.
333 The minix file system (method to organize files on a hard disk
334 partition or a floppy disk) was the original file system for Linux,
335 but has been superseded by the second extended file system ext2fs.
336 You don't want to use the minix file system on your hard disk
337 because of certain built-in restrictions, but it is sometimes found
338 on older Linux floppy disks. This option will enlarge your kernel
339 by about 28 KB. If unsure, say N.
340
341 To compile this file system support as a module, choose M here: the
342 module will be called minix. Note that the file system of your root
343 partition (the one containing the directory /) cannot be compiled as
344 a module.
345
346config ROMFS_FS
347 tristate "ROM file system support"
348 ---help---
349 This is a very small read-only file system mainly intended for
350 initial ram disks of installation disks, but it could be used for
351 other read-only media as well. Read
352 <file:Documentation/filesystems/romfs.txt> for details.
353
354 To compile this file system support as a module, choose M here: the
355 module will be called romfs. Note that the file system of your
356 root partition (the one containing the directory /) cannot be a
357 module.
358
359 If you don't know whether you need it, then you don't need it:
360 answer N.
361
362config QUOTA
363 bool "Quota support"
364 help
365 If you say Y here, you will be able to set per user limits for disk
366 usage (also called disk quotas). Currently, it works for the
367 ext2, ext3, and reiserfs file system. ext3 also supports journalled
368 quotas for which you don't need to run quotacheck(8) after an unclean
369 shutdown. You need additional software in order to use quota support
370 (you can download sources from
371 <http://www.sf.net/projects/linuxquota/>). For further details, read
372 the Quota mini-HOWTO, available from
373 <http://www.tldp.org/docs.html#howto>, or the documentation provided
374 with the quota tools. Probably the quota support is only useful for
375 multi user systems. If unsure, say N.
376
377config QFMT_V1
378 tristate "Old quota format support"
379 depends on QUOTA
380 help
381 This quota format was (is) used by kernels earlier than 2.4.22. If
382 you have quota working and you don't want to convert to new quota
383 format say Y here.
384
385config QFMT_V2
386 tristate "Quota format v2 support"
387 depends on QUOTA
388 help
389 This quota format allows using quotas with 32-bit UIDs/GIDs. If you
390 need this functionality say Y here. Note that you will need recent
391 quota utilities (>= 3.01) for new quota format with this kernel.
392
393config QUOTACTL
394 bool
395 depends on XFS_QUOTA || QUOTA
396 default y
397
398config DNOTIFY
399 bool "Dnotify support" if EMBEDDED
400 default y
401 help
402 Dnotify is a directory-based per-fd file change notification system
403 that uses signals to communicate events to user-space. There exist
404 superior alternatives, but some applications may still rely on
405 dnotify.
406
407 Because of this, if unsure, say Y.
408
409config AUTOFS_FS
410 tristate "Kernel automounter support"
411 help
412 The automounter is a tool to automatically mount remote file systems
413 on demand. This implementation is partially kernel-based to reduce
414 overhead in the already-mounted case; this is unlike the BSD
415 automounter (amd), which is a pure user space daemon.
416
417 To use the automounter you need the user-space tools from the autofs
418 package; you can find the location in <file:Documentation/Changes>.
419 You also want to answer Y to "NFS file system support", below.
420
421 If you want to use the newer version of the automounter with more
422 features, say N here and say Y to "Kernel automounter v4 support",
423 below.
424
425 To compile this support as a module, choose M here: the module will be
426 called autofs.
427
428 If you are not a part of a fairly large, distributed network, you
429 probably do not need an automounter, and can say N here.
430
431config AUTOFS4_FS
432 tristate "Kernel automounter version 4 support (also supports v3)"
433 help
434 The automounter is a tool to automatically mount remote file systems
435 on demand. This implementation is partially kernel-based to reduce
436 overhead in the already-mounted case; this is unlike the BSD
437 automounter (amd), which is a pure user space daemon.
438
439 To use the automounter you need the user-space tools from
440 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
441 want to answer Y to "NFS file system support", below.
442
443 To compile this support as a module, choose M here: the module will be
444 called autofs4. You will need to add "alias autofs autofs4" to your
445 modules configuration file.
446
447 If you are not a part of a fairly large, distributed network or
448 don't have a laptop which needs to dynamically reconfigure to the
449 local network, you probably do not need an automounter, and can say
450 N here.
451
452menu "CD-ROM/DVD Filesystems"
453
454config ISO9660_FS
455 tristate "ISO 9660 CDROM file system support"
456 help
457 This is the standard file system used on CD-ROMs. It was previously
458 known as "High Sierra File System" and is called "hsfs" on other
459 Unix systems. The so-called Rock-Ridge extensions which allow for
460 long Unix filenames and symbolic links are also supported by this
461 driver. If you have a CD-ROM drive and want to do more with it than
462 just listen to audio CDs and watch its LEDs, say Y (and read
463 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
464 available from <http://www.tldp.org/docs.html#howto>), thereby
465 enlarging your kernel by about 27 KB; otherwise say N.
466
467 To compile this file system support as a module, choose M here: the
468 module will be called isofs.
469
470config JOLIET
471 bool "Microsoft Joliet CDROM extensions"
472 depends on ISO9660_FS
473 select NLS
474 help
475 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
476 which allows for long filenames in unicode format (unicode is the
477 new 16 bit character code, successor to ASCII, which encodes the
478 characters of almost all languages of the world; see
479 <http://www.unicode.org/> for more information). Say Y here if you
480 want to be able to read Joliet CD-ROMs under Linux.
481
482config ZISOFS
483 bool "Transparent decompression extension"
484 depends on ISO9660_FS
485 select ZLIB_INFLATE
486 help
487 This is a Linux-specific extension to RockRidge which lets you store
488 data in compressed form on a CD-ROM and have it transparently
489 decompressed when the CD-ROM is accessed. See
490 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
491 necessary to create such a filesystem. Say Y here if you want to be
492 able to read such compressed CD-ROMs.
493
494config ZISOFS_FS
495# for fs/nls/Config.in
496 tristate
497 depends on ZISOFS
498 default ISO9660_FS
499
500config UDF_FS
501 tristate "UDF file system support"
502 help
503 This is the new file system used on some CD-ROMs and DVDs. Say Y if
504 you intend to mount DVD discs or CDRW's written in packet mode, or
505 if written to by other UDF utilities, such as DirectCD.
506 Please read <file:Documentation/filesystems/udf.txt>.
507
508 To compile this file system support as a module, choose M here: the
509 module will be called udf.
510
511 If unsure, say N.
512
513config UDF_NLS
514 bool
515 default y
516 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
517
518endmenu
519
520menu "DOS/FAT/NT Filesystems"
521
522config FAT_FS
523 tristate
524 select NLS
525 help
526 If you want to use one of the FAT-based file systems (the MS-DOS and
527 VFAT (Windows 95) file systems), then you must say Y or M here
528 to include FAT support. You will then be able to mount partitions or
529 diskettes with FAT-based file systems and transparently access the
530 files on them, i.e. MSDOS files will look and behave just like all
531 other Unix files.
532
533 This FAT support is not a file system in itself, it only provides
534 the foundation for the other file systems. You will have to say Y or
535 M to at least one of "MSDOS fs support" or "VFAT fs support" in
536 order to make use of it.
537
538 Another way to read and write MSDOS floppies and hard drive
539 partitions from within Linux (but not transparently) is with the
540 mtools ("man mtools") program suite. You don't need to say Y here in
541 order to do that.
542
543 If you need to move large files on floppies between a DOS and a
544 Linux box, say Y here, mount the floppy under Linux with an MSDOS
545 file system and use GNU tar's M option. GNU tar is a program
546 available for Unix and DOS ("man tar" or "info tar").
547
548 It is now also becoming possible to read and write compressed FAT
549 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
550 details.
551
552 The FAT support will enlarge your kernel by about 37 KB. If unsure,
553 say Y.
554
555 To compile this as a module, choose M here: the module will be called
556 fat. Note that if you compile the FAT support as a module, you
557 cannot compile any of the FAT-based file systems into the kernel
558 -- they will have to be modules as well.
559
560config MSDOS_FS
561 tristate "MSDOS fs support"
562 select FAT_FS
563 help
564 This allows you to mount MSDOS partitions of your hard drive (unless
565 they are compressed; to access compressed MSDOS partitions under
566 Linux, you can either use the DOS emulator DOSEMU, described in the
567 DOSEMU-HOWTO, available from
568 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
569 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
570 intend to use dosemu with a non-compressed MSDOS partition, say Y
571 here) and MSDOS floppies. This means that file access becomes
572 transparent, i.e. the MSDOS files look and behave just like all
573 other Unix files.
574
575 If you have Windows 95 or Windows NT installed on your MSDOS
576 partitions, you should use the VFAT file system (say Y to "VFAT fs
577 support" below), or you will not be able to see the long filenames
578 generated by Windows 95 / Windows NT.
579
580 This option will enlarge your kernel by about 7 KB. If unsure,
581 answer Y. This will only work if you said Y to "DOS FAT fs support"
582 as well. To compile this as a module, choose M here: the module will
583 be called msdos.
584
585config VFAT_FS
586 tristate "VFAT (Windows-95) fs support"
587 select FAT_FS
588 help
589 This option provides support for normal Windows file systems with
590 long filenames. That includes non-compressed FAT-based file systems
591 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
592 programs from the mtools package.
593
594 The VFAT support enlarges your kernel by about 10 KB and it only
595 works if you said Y to the "DOS FAT fs support" above. Please read
596 the file <file:Documentation/filesystems/vfat.txt> for details. If
597 unsure, say Y.
598
599 To compile this as a module, choose M here: the module will be called
600 vfat.
601
602config FAT_DEFAULT_CODEPAGE
603 int "Default codepage for FAT"
604 depends on MSDOS_FS || VFAT_FS
605 default 437
606 help
607 This option should be set to the codepage of your FAT filesystems.
608 It can be overridden with the "codepage" mount option.
609 See <file:Documentation/filesystems/vfat.txt> for more information.
610
611config FAT_DEFAULT_IOCHARSET
612 string "Default iocharset for FAT"
613 depends on VFAT_FS
614 default "iso8859-1"
615 help
616 Set this to the default input/output character set you'd
617 like FAT to use. It should probably match the character set
618 that most of your FAT filesystems use, and can be overridden
619 with the "iocharset" mount option for FAT filesystems.
620 Note that "utf8" is not recommended for FAT filesystems.
621 If unsure, you shouldn't set "utf8" here.
622 See <file:Documentation/filesystems/vfat.txt> for more information.
623
624config NTFS_FS
625 tristate "NTFS file system support"
626 select NLS
627 help
628 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
629
630 Saying Y or M here enables read support. There is partial, but
631 safe, write support available. For write support you must also
632 say Y to "NTFS write support" below.
633
634 There are also a number of user-space tools available, called
635 ntfsprogs. These include ntfsundelete and ntfsresize, that work
636 without NTFS support enabled in the kernel.
637
638 This is a rewrite from scratch of Linux NTFS support and replaced
639 the old NTFS code starting with Linux 2.5.11. A backport to
640 the Linux 2.4 kernel series is separately available as a patch
641 from the project web site.
642
643 For more information see <file:Documentation/filesystems/ntfs.txt>
644 and <http://linux-ntfs.sourceforge.net/>.
645
646 To compile this file system support as a module, choose M here: the
647 module will be called ntfs.
648
649 If you are not using Windows NT, 2000, XP or 2003 in addition to
650 Linux on your computer it is safe to say N.
651
652config NTFS_DEBUG
653 bool "NTFS debugging support"
654 depends on NTFS_FS
655 help
656 If you are experiencing any problems with the NTFS file system, say
657 Y here. This will result in additional consistency checks to be
658 performed by the driver as well as additional debugging messages to
659 be written to the system log. Note that debugging messages are
660 disabled by default. To enable them, supply the option debug_msgs=1
661 at the kernel command line when booting the kernel or as an option
662 to insmod when loading the ntfs module. Once the driver is active,
663 you can enable debugging messages by doing (as root):
664 echo 1 > /proc/sys/fs/ntfs-debug
665 Replacing the "1" with "0" would disable debug messages.
666
667 If you leave debugging messages disabled, this results in little
668 overhead, but enabling debug messages results in very significant
669 slowdown of the system.
670
671 When reporting bugs, please try to have available a full dump of
672 debugging messages while the misbehaviour was occurring.
673
674config NTFS_RW
675 bool "NTFS write support"
676 depends on NTFS_FS
677 help
678 This enables the partial, but safe, write support in the NTFS driver.
679
680 The only supported operation is overwriting existing files, without
681 changing the file length. No file or directory creation, deletion or
682 renaming is possible. Note only non-resident files can be written to
683 so you may find that some very small files (<500 bytes or so) cannot
684 be written to.
685
686 While we cannot guarantee that it will not damage any data, we have
687 so far not received a single report where the driver would have
688 damaged someones data so we assume it is perfectly safe to use.
689
690 Note: While write support is safe in this version (a rewrite from
691 scratch of the NTFS support), it should be noted that the old NTFS
692 write support, included in Linux 2.5.10 and before (since 1997),
693 is not safe.
694
695 This is currently useful with TopologiLinux. TopologiLinux is run
696 on top of any DOS/Microsoft Windows system without partitioning your
697 hard disk. Unlike other Linux distributions TopologiLinux does not
698 need its own partition. For more information see
699 <http://topologi-linux.sourceforge.net/>
700
701 It is perfectly safe to say N here.
702
703endmenu
704
705menu "Pseudo filesystems"
706
707config PROC_FS
708 bool "/proc file system support"
709 help
710 This is a virtual file system providing information about the status
711 of the system. "Virtual" means that it doesn't take up any space on
712 your hard disk: the files are created on the fly by the kernel when
713 you try to access them. Also, you cannot read the files with older
714 version of the program less: you need to use more or cat.
715
716 It's totally cool; for example, "cat /proc/interrupts" gives
717 information about what the different IRQs are used for at the moment
718 (there is a small number of Interrupt ReQuest lines in your computer
719 that are used by the attached devices to gain the CPU's attention --
720 often a source of trouble if two devices are mistakenly configured
721 to use the same IRQ). The program procinfo to display some
722 information about your system gathered from the /proc file system.
723
724 Before you can use the /proc file system, it has to be mounted,
725 meaning it has to be given a location in the directory hierarchy.
726 That location should be /proc. A command such as "mount -t proc proc
727 /proc" or the equivalent line in /etc/fstab does the job.
728
729 The /proc file system is explained in the file
730 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
731 ("man 5 proc").
732
733 This option will enlarge your kernel by about 67 KB. Several
734 programs depend on this, so everyone should say Y here.
735
736config PROC_KCORE
737 bool "/proc/kcore support" if !ARM
738 depends on PROC_FS && MMU
739
666bfddb
VG
740config PROC_VMCORE
741 bool "/proc/vmcore support (EXPERIMENTAL)"
742 depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP
743 help
744 Exports the dump image of crashed kernel in ELF format.
745
1da177e4
LT
746config SYSFS
747 bool "sysfs file system support" if EMBEDDED
748 default y
749 help
750 The sysfs filesystem is a virtual filesystem that the kernel uses to
751 export internal kernel objects, their attributes, and their
752 relationships to one another.
753
754 Users can use sysfs to ascertain useful information about the running
755 kernel, such as the devices the kernel has discovered on each bus and
756 which driver each is bound to. sysfs can also be used to tune devices
757 and other kernel subsystems.
758
759 Some system agents rely on the information in sysfs to operate.
760 /sbin/hotplug uses device and object attributes in sysfs to assist in
761 delegating policy decisions, like persistantly naming devices.
762
763 sysfs is currently used by the block subsystem to mount the root
764 partition. If sysfs is disabled you must specify the boot device on
765 the kernel boot command line via its major and minor numbers. For
766 example, "root=03:01" for /dev/hda1.
767
768 Designers of embedded systems may wish to say N here to conserve space.
769
1da177e4
LT
770config DEVPTS_FS_XATTR
771 bool "/dev/pts Extended Attributes"
772 depends on UNIX98_PTYS
773 help
774 Extended attributes are name:value pairs associated with inodes by
775 the kernel or by users (see the attr(5) manual page, or visit
776 <http://acl.bestbits.at/> for details).
777
778 If unsure, say N.
779
780config DEVPTS_FS_SECURITY
781 bool "/dev/pts Security Labels"
782 depends on DEVPTS_FS_XATTR
783 help
784 Security labels support alternative access control models
785 implemented by security modules like SELinux. This option
786 enables an extended attribute handler for file security
787 labels in the /dev/pts filesystem.
788
789 If you are not using a security module that requires using
790 extended attributes for file security labels, say N.
791
792config TMPFS
793 bool "Virtual memory file system support (former shm fs)"
794 help
795 Tmpfs is a file system which keeps all files in virtual memory.
796
797 Everything in tmpfs is temporary in the sense that no files will be
798 created on your hard drive. The files live in memory and swap
799 space. If you unmount a tmpfs instance, everything stored therein is
800 lost.
801
802 See <file:Documentation/filesystems/tmpfs.txt> for details.
803
804config TMPFS_XATTR
805 bool "tmpfs Extended Attributes"
806 depends on TMPFS
807 help
808 Extended attributes are name:value pairs associated with inodes by
809 the kernel or by users (see the attr(5) manual page, or visit
810 <http://acl.bestbits.at/> for details).
811
812 If unsure, say N.
813
814config TMPFS_SECURITY
815 bool "tmpfs Security Labels"
816 depends on TMPFS_XATTR
817 help
818 Security labels support alternative access control models
819 implemented by security modules like SELinux. This option
820 enables an extended attribute handler for file security
821 labels in the tmpfs filesystem.
822 If you are not using a security module that requires using
823 extended attributes for file security labels, say N.
824
825config HUGETLBFS
826 bool "HugeTLB file system support"
827 depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
828
829config HUGETLB_PAGE
830 def_bool HUGETLBFS
831
832config RAMFS
833 bool
834 default y
835 ---help---
836 Ramfs is a file system which keeps all files in RAM. It allows
837 read and write access.
838
839 It is more of an programming example than a useable file system. If
840 you need a file system which lives in RAM with limit checking use
841 tmpfs.
842
843 To compile this as a module, choose M here: the module will be called
844 ramfs.
845
846endmenu
847
848menu "Miscellaneous filesystems"
849
850config ADFS_FS
851 tristate "ADFS file system support (EXPERIMENTAL)"
852 depends on EXPERIMENTAL
853 help
854 The Acorn Disc Filing System is the standard file system of the
855 RiscOS operating system which runs on Acorn's ARM-based Risc PC
856 systems and the Acorn Archimedes range of machines. If you say Y
857 here, Linux will be able to read from ADFS partitions on hard drives
858 and from ADFS-formatted floppy discs. If you also want to be able to
859 write to those devices, say Y to "ADFS write support" below.
860
861 The ADFS partition should be the first partition (i.e.,
862 /dev/[hs]d?1) on each of your drives. Please read the file
863 <file:Documentation/filesystems/adfs.txt> for further details.
864
865 To compile this code as a module, choose M here: the module will be
866 called adfs.
867
868 If unsure, say N.
869
870config ADFS_FS_RW
871 bool "ADFS write support (DANGEROUS)"
872 depends on ADFS_FS
873 help
874 If you say Y here, you will be able to write to ADFS partitions on
875 hard drives and ADFS-formatted floppy disks. This is experimental
876 codes, so if you're unsure, say N.
877
878config AFFS_FS
879 tristate "Amiga FFS file system support (EXPERIMENTAL)"
880 depends on EXPERIMENTAL
881 help
882 The Fast File System (FFS) is the common file system used on hard
883 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
884 if you want to be able to read and write files from and to an Amiga
885 FFS partition on your hard drive. Amiga floppies however cannot be
886 read with this driver due to an incompatibility of the floppy
887 controller used in an Amiga and the standard floppy controller in
888 PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
889 and <file:fs/affs/Changes>.
890
891 With this driver you can also mount disk files used by Bernd
892 Schmidt's Un*X Amiga Emulator
893 (<http://www.freiburg.linux.de/~uae/>).
894 If you want to do this, you will also need to say Y or M to "Loop
895 device support", above.
896
897 To compile this file system support as a module, choose M here: the
898 module will be called affs. If unsure, say N.
899
900config HFS_FS
901 tristate "Apple Macintosh file system support (EXPERIMENTAL)"
902 depends on EXPERIMENTAL
903 help
904 If you say Y here, you will be able to mount Macintosh-formatted
905 floppy disks and hard drive partitions with full read-write access.
906 Please read <file:fs/hfs/HFS.txt> to learn about the available mount
907 options.
908
909 To compile this file system support as a module, choose M here: the
910 module will be called hfs.
911
912config HFSPLUS_FS
913 tristate "Apple Extended HFS file system support"
914 select NLS
915 select NLS_UTF8
916 help
917 If you say Y here, you will be able to mount extended format
918 Macintosh-formatted hard drive partitions with full read-write access.
919
920 This file system is often called HFS+ and was introduced with
921 MacOS 8. It includes all Mac specific filesystem data such as
922 data forks and creator codes, but it also has several UNIX
923 style features such as file ownership and permissions.
924
925config BEFS_FS
926 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
927 depends on EXPERIMENTAL
928 select NLS
929 help
930 The BeOS File System (BeFS) is the native file system of Be, Inc's
931 BeOS. Notable features include support for arbitrary attributes
932 on files and directories, and database-like indeces on selected
933 attributes. (Also note that this driver doesn't make those features
934 available at this time). It is a 64 bit filesystem, so it supports
935 extremly large volumes and files.
936
937 If you use this filesystem, you should also say Y to at least one
938 of the NLS (native language support) options below.
939
940 If you don't know what this is about, say N.
941
942 To compile this as a module, choose M here: the module will be
943 called befs.
944
945config BEFS_DEBUG
946 bool "Debug BeFS"
947 depends on BEFS_FS
948 help
949 If you say Y here, you can use the 'debug' mount option to enable
950 debugging output from the driver.
951
952config BFS_FS
953 tristate "BFS file system support (EXPERIMENTAL)"
954 depends on EXPERIMENTAL
955 help
956 Boot File System (BFS) is a file system used under SCO UnixWare to
957 allow the bootloader access to the kernel image and other important
958 files during the boot process. It is usually mounted under /stand
959 and corresponds to the slice marked as "STAND" in the UnixWare
960 partition. You should say Y if you want to read or write the files
961 on your /stand slice from within Linux. You then also need to say Y
962 to "UnixWare slices support", below. More information about the BFS
963 file system is contained in the file
964 <file:Documentation/filesystems/bfs.txt>.
965
966 If you don't know what this is about, say N.
967
968 To compile this as a module, choose M here: the module will be called
969 bfs. Note that the file system of your root partition (the one
970 containing the directory /) cannot be compiled as a module.
971
972
973
974config EFS_FS
975 tristate "EFS file system support (read only) (EXPERIMENTAL)"
976 depends on EXPERIMENTAL
977 help
978 EFS is an older file system used for non-ISO9660 CD-ROMs and hard
979 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
980 uses the XFS file system for hard disk partitions however).
981
982 This implementation only offers read-only access. If you don't know
983 what all this is about, it's safe to say N. For more information
984 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
985
986 To compile the EFS file system support as a module, choose M here: the
987 module will be called efs.
988
989config JFFS_FS
990 tristate "Journalling Flash File System (JFFS) support"
991 depends on MTD
992 help
993 JFFS is the Journaling Flash File System developed by Axis
994 Communications in Sweden, aimed at providing a crash/powerdown-safe
995 file system for disk-less embedded devices. Further information is
996 available at (<http://developer.axis.com/software/jffs/>).
997
998config JFFS_FS_VERBOSE
999 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
1000 depends on JFFS_FS
1001 default "0"
1002 help
1003 Determines the verbosity level of the JFFS debugging messages.
1004
1005config JFFS_PROC_FS
1006 bool "JFFS stats available in /proc filesystem"
1007 depends on JFFS_FS && PROC_FS
1008 help
1009 Enabling this option will cause statistics from mounted JFFS file systems
1010 to be made available to the user in the /proc/fs/jffs/ directory.
1011
1012config JFFS2_FS
1013 tristate "Journalling Flash File System v2 (JFFS2) support"
1014 select CRC32
1015 depends on MTD
1016 help
1017 JFFS2 is the second generation of the Journalling Flash File System
1018 for use on diskless embedded devices. It provides improved wear
1019 levelling, compression and support for hard links. You cannot use
1020 this on normal block devices, only on 'MTD' devices.
1021
1022 Further information on the design and implementation of JFFS2 is
1023 available at <http://sources.redhat.com/jffs2/>.
1024
1025config JFFS2_FS_DEBUG
1026 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1027 depends on JFFS2_FS
1028 default "0"
1029 help
1030 This controls the amount of debugging messages produced by the JFFS2
1031 code. Set it to zero for use in production systems. For evaluation,
1032 testing and debugging, it's advisable to set it to one. This will
1033 enable a few assertions and will print debugging messages at the
1034 KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1035 is unlikely to be useful - it enables extra debugging in certain
1036 areas which at one point needed debugging, but when the bugs were
1037 located and fixed, the detailed messages were relegated to level 2.
1038
1039 If reporting bugs, please try to have available a full dump of the
1040 messages at debug level 1 while the misbehaviour was occurring.
1041
2f82ce1e
AV
1042config JFFS2_FS_WRITEBUFFER
1043 bool "JFFS2 write-buffering support"
1da177e4 1044 depends on JFFS2_FS
2f82ce1e 1045 default y
1da177e4 1046 help
2f82ce1e 1047 This enables the write-buffering support in JFFS2.
1da177e4 1048
2f82ce1e
AV
1049 This functionality is required to support JFFS2 on the following
1050 types of flash devices:
1051 - NAND flash
1052 - NOR flash with transparent ECC
1053 - DataFlash
1da177e4
LT
1054
1055config JFFS2_COMPRESSION_OPTIONS
1056 bool "Advanced compression options for JFFS2"
1057 depends on JFFS2_FS
1058 default n
1059 help
1060 Enabling this option allows you to explicitly choose which
1061 compression modules, if any, are enabled in JFFS2. Removing
1062 compressors and mean you cannot read existing file systems,
1063 and enabling experimental compressors can mean that you
1064 write a file system which cannot be read by a standard kernel.
1065
1066 If unsure, you should _definitely_ say 'N'.
1067
1068config JFFS2_ZLIB
1069 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1070 select ZLIB_INFLATE
1071 select ZLIB_DEFLATE
1072 depends on JFFS2_FS
1073 default y
1074 help
1075 Zlib is designed to be a free, general-purpose, legally unencumbered,
1076 lossless data-compression library for use on virtually any computer
1077 hardware and operating system. See <http://www.gzip.org/zlib/> for
1078 further information.
1079
1080 Say 'Y' if unsure.
1081
1082config JFFS2_RTIME
1083 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1084 depends on JFFS2_FS
1085 default y
1086 help
1087 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1088
1089config JFFS2_RUBIN
1090 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1091 depends on JFFS2_FS
1092 default n
1093 help
1094 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1095
1096choice
1097 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1098 default JFFS2_CMODE_PRIORITY
1099 depends on JFFS2_FS
1100 help
1101 You can set here the default compression mode of JFFS2 from
1102 the available compression modes. Don't touch if unsure.
1103
1104config JFFS2_CMODE_NONE
1105 bool "no compression"
1106 help
1107 Uses no compression.
1108
1109config JFFS2_CMODE_PRIORITY
1110 bool "priority"
1111 help
1112 Tries the compressors in a predefinied order and chooses the first
1113 successful one.
1114
1115config JFFS2_CMODE_SIZE
1116 bool "size (EXPERIMENTAL)"
1117 help
1118 Tries all compressors and chooses the one which has the smallest
1119 result.
1120
1121endchoice
1122
1123config CRAMFS
1124 tristate "Compressed ROM file system support (cramfs)"
1125 select ZLIB_INFLATE
1126 help
1127 Saying Y here includes support for CramFs (Compressed ROM File
1128 System). CramFs is designed to be a simple, small, and compressed
1129 file system for ROM based embedded systems. CramFs is read-only,
1130 limited to 256MB file systems (with 16MB files), and doesn't support
1131 16/32 bits uid/gid, hard links and timestamps.
1132
1133 See <file:Documentation/filesystems/cramfs.txt> and
1134 <file:fs/cramfs/README> for further information.
1135
1136 To compile this as a module, choose M here: the module will be called
1137 cramfs. Note that the root file system (the one containing the
1138 directory /) cannot be compiled as a module.
1139
1140 If unsure, say N.
1141
1142config VXFS_FS
1143 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1144 help
1145 FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1146 file system format. VERITAS VxFS(TM) is the standard file system
1147 of SCO UnixWare (and possibly others) and optionally available
1148 for Sunsoft Solaris, HP-UX and many other operating systems.
1149 Currently only readonly access is supported.
1150
1151 NOTE: the file system type as used by mount(1), mount(2) and
1152 fstab(5) is 'vxfs' as it describes the file system format, not
1153 the actual driver.
1154
1155 To compile this as a module, choose M here: the module will be
1156 called freevxfs. If unsure, say N.
1157
1158
1159config HPFS_FS
1160 tristate "OS/2 HPFS file system support"
1161 help
1162 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1163 is the file system used for organizing files on OS/2 hard disk
1164 partitions. Say Y if you want to be able to read files from and
1165 write files to an OS/2 HPFS partition on your hard drive. OS/2
1166 floppies however are in regular MSDOS format, so you don't need this
1167 option in order to be able to read them. Read
1168 <file:Documentation/filesystems/hpfs.txt>.
1169
1170 To compile this file system support as a module, choose M here: the
1171 module will be called hpfs. If unsure, say N.
1172
1173
1174
1175config QNX4FS_FS
1176 tristate "QNX4 file system support (read only)"
1177 help
1178 This is the file system used by the real-time operating systems
1179 QNX 4 and QNX 6 (the latter is also called QNX RTP).
1180 Further information is available at <http://www.qnx.com/>.
1181 Say Y if you intend to mount QNX hard disks or floppies.
1182 Unless you say Y to "QNX4FS read-write support" below, you will
1183 only be able to read these file systems.
1184
1185 To compile this file system support as a module, choose M here: the
1186 module will be called qnx4.
1187
1188 If you don't know whether you need it, then you don't need it:
1189 answer N.
1190
1191config QNX4FS_RW
1192 bool "QNX4FS write support (DANGEROUS)"
1193 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1194 help
1195 Say Y if you want to test write support for QNX4 file systems.
1196
1197 It's currently broken, so for now:
1198 answer N.
1199
1200
1201
1202config SYSV_FS
1203 tristate "System V/Xenix/V7/Coherent file system support"
1204 help
1205 SCO, Xenix and Coherent are commercial Unix systems for Intel
1206 machines, and Version 7 was used on the DEC PDP-11. Saying Y
1207 here would allow you to read from their floppies and hard disk
1208 partitions.
1209
1210 If you have floppies or hard disk partitions like that, it is likely
1211 that they contain binaries from those other Unix systems; in order
1212 to run these binaries, you will want to install linux-abi which is a
1213 a set of kernel modules that lets you run SCO, Xenix, Wyse,
1214 UnixWare, Dell Unix and System V programs under Linux. It is
1215 available via FTP (user: ftp) from
1216 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1217 NOTE: that will work only for binaries from Intel-based systems;
1218 PDP ones will have to wait until somebody ports Linux to -11 ;-)
1219
1220 If you only intend to mount files from some other Unix over the
1221 network using NFS, you don't need the System V file system support
1222 (but you need NFS file system support obviously).
1223
1224 Note that this option is generally not needed for floppies, since a
1225 good portable way to transport files and directories between unixes
1226 (and even other operating systems) is given by the tar program ("man
1227 tar" or preferably "info tar"). Note also that this option has
1228 nothing whatsoever to do with the option "System V IPC". Read about
1229 the System V file system in
1230 <file:Documentation/filesystems/sysv-fs.txt>.
1231 Saying Y here will enlarge your kernel by about 27 KB.
1232
1233 To compile this as a module, choose M here: the module will be called
1234 sysv.
1235
1236 If you haven't heard about all of this before, it's safe to say N.
1237
1238
1239
1240config UFS_FS
1241 tristate "UFS file system support (read only)"
1242 help
1243 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1244 OpenBSD and NeXTstep) use a file system called UFS. Some System V
1245 Unixes can create and mount hard disk partitions and diskettes using
1246 this file system as well. Saying Y here will allow you to read from
1247 these partitions; if you also want to write to them, say Y to the
1248 experimental "UFS file system write support", below. Please read the
1249 file <file:Documentation/filesystems/ufs.txt> for more information.
1250
1251 The recently released UFS2 variant (used in FreeBSD 5.x) is
1252 READ-ONLY supported.
1253
1254 If you only intend to mount files from some other Unix over the
1255 network using NFS, you don't need the UFS file system support (but
1256 you need NFS file system support obviously).
1257
1258 Note that this option is generally not needed for floppies, since a
1259 good portable way to transport files and directories between unixes
1260 (and even other operating systems) is given by the tar program ("man
1261 tar" or preferably "info tar").
1262
1263 When accessing NeXTstep files, you may need to convert them from the
1264 NeXT character set to the Latin1 character set; use the program
1265 recode ("info recode") for this purpose.
1266
1267 To compile the UFS file system support as a module, choose M here: the
1268 module will be called ufs.
1269
1270 If you haven't heard about all of this before, it's safe to say N.
1271
1272config UFS_FS_WRITE
1273 bool "UFS file system write support (DANGEROUS)"
1274 depends on UFS_FS && EXPERIMENTAL
1275 help
1276 Say Y here if you want to try writing to UFS partitions. This is
1277 experimental, so you should back up your UFS partitions beforehand.
1278
1279endmenu
1280
1281menu "Network File Systems"
1282 depends on NET
1283
1284config NFS_FS
1285 tristate "NFS file system support"
1286 depends on INET
1287 select LOCKD
1288 select SUNRPC
b7fa0554 1289 select NFS_ACL_SUPPORT if NFS_V3_ACL
1da177e4
LT
1290 help
1291 If you are connected to some other (usually local) Unix computer
1292 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1293 on that computer (the NFS server) using the Network File Sharing
1294 protocol, say Y. "Mounting files" means that the client can access
1295 the files with usual UNIX commands as if they were sitting on the
1296 client's hard disk. For this to work, the server must run the
1297 programs nfsd and mountd (but does not need to have NFS file system
1298 support enabled in its kernel). NFS is explained in the Network
1299 Administrator's Guide, available from
1300 <http://www.tldp.org/docs.html#guide>, on its man page: "man
1301 nfs", and in the NFS-HOWTO.
1302
1303 A superior but less widely used alternative to NFS is provided by
1304 the Coda file system; see "Coda file system support" below.
1305
1306 If you say Y here, you should have said Y to TCP/IP networking also.
1307 This option would enlarge your kernel by about 27 KB.
1308
1309 To compile this file system support as a module, choose M here: the
1310 module will be called nfs.
1311
1312 If you are configuring a diskless machine which will mount its root
1313 file system over NFS at boot time, say Y here and to "Kernel
1314 level IP autoconfiguration" above and to "Root file system on NFS"
1315 below. You cannot compile this driver as a module in this case.
1316 There are two packages designed for booting diskless machines over
1317 the net: netboot, available from
1318 <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1319 available from <http://ftp1.sourceforge.net/etherboot/>.
1320
1321 If you don't know what all this is about, say N.
1322
1323config NFS_V3
1324 bool "Provide NFSv3 client support"
1325 depends on NFS_FS
1326 help
1327 Say Y here if you want your NFS client to be able to speak version
1328 3 of the NFS protocol.
1329
1330 If unsure, say Y.
1331
b7fa0554
AG
1332config NFS_V3_ACL
1333 bool "Provide client support for the NFSv3 ACL protocol extension"
1334 depends on NFS_V3
1335 help
1336 Implement the NFSv3 ACL protocol extension for manipulating POSIX
1337 Access Control Lists. The server should also be compiled with
1338 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1339
1340 If unsure, say N.
1341
1da177e4
LT
1342config NFS_V4
1343 bool "Provide NFSv4 client support (EXPERIMENTAL)"
1344 depends on NFS_FS && EXPERIMENTAL
1345 select RPCSEC_GSS_KRB5
1346 help
1347 Say Y here if you want your NFS client to be able to speak the newer
1348 version 4 of the NFS protocol.
1349
1350 Note: Requires auxiliary userspace daemons which may be found on
1351 http://www.citi.umich.edu/projects/nfsv4/
1352
1353 If unsure, say N.
1354
1355config NFS_DIRECTIO
1356 bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
1357 depends on NFS_FS && EXPERIMENTAL
1358 help
1359 This option enables applications to perform uncached I/O on files
1360 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
1361 is set for a file, its data is not cached in the system's page
1362 cache. Data is moved to and from user-level application buffers
1363 directly. Unlike local disk-based file systems, NFS O_DIRECT has
1364 no alignment restrictions.
1365
1366 Unless your program is designed to use O_DIRECT properly, you are
1367 much better off allowing the NFS client to manage data caching for
1368 you. Misusing O_DIRECT can cause poor server performance or network
1369 storms. This kernel build option defaults OFF to avoid exposing
1370 system administrators unwittingly to a potentially hazardous
1371 feature.
1372
1373 For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1374
1375 If unsure, say N. This reduces the size of the NFS client, and
1376 causes open() to return EINVAL if a file residing in NFS is
1377 opened with the O_DIRECT flag.
1378
1379config NFSD
1380 tristate "NFS server support"
1381 depends on INET
1382 select LOCKD
1383 select SUNRPC
1384 select EXPORTFS
a257cdd0 1385 select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
1da177e4
LT
1386 help
1387 If you want your Linux box to act as an NFS *server*, so that other
1388 computers on your local network which support NFS can access certain
1389 directories on your box transparently, you have two options: you can
1390 use the self-contained user space program nfsd, in which case you
1391 should say N here, or you can say Y and use the kernel based NFS
1392 server. The advantage of the kernel based solution is that it is
1393 faster.
1394
1395 In either case, you will need support software; the respective
1396 locations are given in the file <file:Documentation/Changes> in the
1397 NFS section.
1398
1399 If you say Y here, you will get support for version 2 of the NFS
1400 protocol (NFSv2). If you also want NFSv3, say Y to the next question
1401 as well.
1402
1403 Please read the NFS-HOWTO, available from
1404 <http://www.tldp.org/docs.html#howto>.
1405
1406 To compile the NFS server support as a module, choose M here: the
1407 module will be called nfsd. If unsure, say N.
1408
a257cdd0
AG
1409config NFSD_V2_ACL
1410 bool
1411 depends on NFSD
1412
1da177e4
LT
1413config NFSD_V3
1414 bool "Provide NFSv3 server support"
1415 depends on NFSD
1416 help
1417 If you would like to include the NFSv3 server as well as the NFSv2
1418 server, say Y here. If unsure, say Y.
1419
a257cdd0
AG
1420config NFSD_V3_ACL
1421 bool "Provide server support for the NFSv3 ACL protocol extension"
1422 depends on NFSD_V3
1423 select NFSD_V2_ACL
1424 help
1425 Implement the NFSv3 ACL protocol extension for manipulating POSIX
1426 Access Control Lists on exported file systems. NFS clients should
1427 be compiled with the NFSv3 ACL protocol extension; see the
1428 CONFIG_NFS_V3_ACL option. If unsure, say N.
1429
1da177e4
LT
1430config NFSD_V4
1431 bool "Provide NFSv4 server support (EXPERIMENTAL)"
1432 depends on NFSD_V3 && EXPERIMENTAL
1433 select NFSD_TCP
a55370a3
N
1434 select CRYPTO_MD5
1435 select CRYPTO
b84c2157 1436 select FS_POSIX_ACL
1da177e4
LT
1437 help
1438 If you would like to include the NFSv4 server as well as the NFSv2
1439 and NFSv3 servers, say Y here. This feature is experimental, and
1440 should only be used if you are interested in helping to test NFSv4.
1441 If unsure, say N.
1442
1443config NFSD_TCP
1444 bool "Provide NFS server over TCP support"
1445 depends on NFSD
1446 default y
1447 help
1448 If you want your NFS server to support TCP connections, say Y here.
1449 TCP connections usually perform better than the default UDP when
1450 the network is lossy or congested. If unsure, say Y.
1451
1452config ROOT_NFS
1453 bool "Root file system on NFS"
1454 depends on NFS_FS=y && IP_PNP
1455 help
1456 If you want your Linux box to mount its whole root file system (the
1457 one containing the directory /) from some other computer over the
1458 net via NFS (presumably because your box doesn't have a hard disk),
1459 say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1460 likely that in this case, you also want to say Y to "Kernel level IP
1461 autoconfiguration" so that your box can discover its network address
1462 at boot time.
1463
1464 Most people say N here.
1465
1466config LOCKD
1467 tristate
1468
1469config LOCKD_V4
1470 bool
1471 depends on NFSD_V3 || NFS_V3
1472 default y
1473
1474config EXPORTFS
1475 tristate
1476
a257cdd0
AG
1477config NFS_ACL_SUPPORT
1478 tristate
1479 select FS_POSIX_ACL
1480
1481config NFS_COMMON
1482 bool
1483 depends on NFSD || NFS_FS
1484 default y
1485
1da177e4
LT
1486config SUNRPC
1487 tristate
1488
1489config SUNRPC_GSS
1490 tristate
1491
1492config RPCSEC_GSS_KRB5
1493 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1494 depends on SUNRPC && EXPERIMENTAL
1495 select SUNRPC_GSS
1496 select CRYPTO
1497 select CRYPTO_MD5
1498 select CRYPTO_DES
1499 help
1500 Provides for secure RPC calls by means of a gss-api
1501 mechanism based on Kerberos V5. This is required for
1502 NFSv4.
1503
1504 Note: Requires an auxiliary userspace daemon which may be found on
1505 http://www.citi.umich.edu/projects/nfsv4/
1506
1507 If unsure, say N.
1508
1509config RPCSEC_GSS_SPKM3
1510 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1511 depends on SUNRPC && EXPERIMENTAL
1512 select SUNRPC_GSS
1513 select CRYPTO
1514 select CRYPTO_MD5
1515 select CRYPTO_DES
1516 help
1517 Provides for secure RPC calls by means of a gss-api
1518 mechanism based on the SPKM3 public-key mechanism.
1519
1520 Note: Requires an auxiliary userspace daemon which may be found on
1521 http://www.citi.umich.edu/projects/nfsv4/
1522
1523 If unsure, say N.
1524
1525config SMB_FS
1526 tristate "SMB file system support (to mount Windows shares etc.)"
1527 depends on INET
1528 select NLS
1529 help
1530 SMB (Server Message Block) is the protocol Windows for Workgroups
1531 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1532 files and printers over local networks. Saying Y here allows you to
1533 mount their file systems (often called "shares" in this context) and
1534 access them just like any other Unix directory. Currently, this
1535 works only if the Windows machines use TCP/IP as the underlying
1536 transport protocol, and not NetBEUI. For details, read
1537 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1538 available from <http://www.tldp.org/docs.html#howto>.
1539
1540 Note: if you just want your box to act as an SMB *server* and make
1541 files and printing services available to Windows clients (which need
1542 to have a TCP/IP stack), you don't need to say Y here; you can use
1543 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1544 for that.
1545
1546 General information about how to connect Linux, Windows machines and
1547 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1548
1549 To compile the SMB support as a module, choose M here: the module will
1550 be called smbfs. Most people say N, however.
1551
1552config SMB_NLS_DEFAULT
1553 bool "Use a default NLS"
1554 depends on SMB_FS
1555 help
1556 Enabling this will make smbfs use nls translations by default. You
1557 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1558 settings and you need to give the default nls for the SMB server as
1559 CONFIG_SMB_NLS_REMOTE.
1560
1561 The nls settings can be changed at mount time, if your smbmount
1562 supports that, using the codepage and iocharset parameters.
1563
1564 smbmount from samba 2.2.0 or later supports this.
1565
1566config SMB_NLS_REMOTE
1567 string "Default Remote NLS Option"
1568 depends on SMB_NLS_DEFAULT
1569 default "cp437"
1570 help
1571 This setting allows you to specify a default value for which
1572 codepage the server uses. If this field is left blank no
1573 translations will be done by default. The local codepage/charset
1574 default to CONFIG_NLS_DEFAULT.
1575
1576 The nls settings can be changed at mount time, if your smbmount
1577 supports that, using the codepage and iocharset parameters.
1578
1579 smbmount from samba 2.2.0 or later supports this.
1580
1581config CIFS
1582 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1583 depends on INET
1584 select NLS
1585 help
1586 This is the client VFS module for the Common Internet File System
1587 (CIFS) protocol which is the successor to the Server Message Block
1588 (SMB) protocol, the native file sharing mechanism for most early
1589 PC operating systems. The CIFS protocol is fully supported by
1590 file servers such as Windows 2000 (including Windows 2003, NT 4
1591 and Windows XP) as well by Samba (which provides excellent CIFS
1592 server support for Linux and many other operating systems). Currently
1593 you must use the smbfs client filesystem to access older SMB servers
1594 such as Windows 9x and OS/2.
1595
1596 The intent of the cifs module is to provide an advanced
1597 network file system client for mounting to CIFS compliant servers,
1598 including support for dfs (hierarchical name space), secure per-user
1599 session establishment, safe distributed caching (oplock), optional
1600 packet signing, Unicode and other internationalization improvements,
1601 and optional Winbind (nsswitch) integration. You do not need to enable
1602 cifs if running only a (Samba) server. It is possible to enable both
1603 smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
1604 and Samba 3 servers, and smbfs for accessing old servers). If you need
1605 to mount to Samba or Windows 2003 servers from this machine, say Y.
1606
1607config CIFS_STATS
1608 bool "CIFS statistics"
1609 depends on CIFS
1610 help
1611 Enabling this option will cause statistics for each server share
1612 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1613
1614config CIFS_XATTR
1615 bool "CIFS extended attributes (EXPERIMENTAL)"
1616 depends on CIFS
1617 help
1618 Extended attributes are name:value pairs associated with inodes by
1619 the kernel or by users (see the attr(5) manual page, or visit
1620 <http://acl.bestbits.at/> for details). CIFS maps the name of
1621 extended attributes beginning with the user namespace prefix
1622 to SMB/CIFS EAs. EAs are stored on Windows servers without the
1623 user namespace prefix, but their names are seen by Linux cifs clients
1624 prefaced by the user namespace prefix. The system namespace
1625 (used by some filesystems to store ACLs) is not supported at
1626 this time.
1627
1628 If unsure, say N.
1629
1630config CIFS_POSIX
1631 bool "CIFS POSIX Extensions (EXPERIMENTAL)"
1632 depends on CIFS_XATTR
1633 help
1634 Enabling this option will cause the cifs client to attempt to
1635 negotiate a newer dialect with servers, such as Samba 3.0.5
1636 or later, that optionally can handle more POSIX like (rather
1637 than Windows like) file behavior. It also enables
1638 support for POSIX ACLs (getfacl and setfacl) to servers
1639 (such as Samba 3.10 and later) which can negotiate
1640 CIFS POSIX ACL support. If unsure, say N.
1641
1642config CIFS_EXPERIMENTAL
1643 bool "CIFS Experimental Features (EXPERIMENTAL)"
1644 depends on CIFS
1645 help
1646 Enables cifs features under testing. These features
1647 are highly experimental. If unsure, say N.
1648
1649config NCP_FS
1650 tristate "NCP file system support (to mount NetWare volumes)"
1651 depends on IPX!=n || INET
1652 help
1653 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
1654 used by Novell NetWare clients to talk to file servers. It is to
1655 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
1656 to mount NetWare file server volumes and to access them just like
1657 any other Unix directory. For details, please read the file
1658 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
1659 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
1660
1661 You do not have to say Y here if you want your Linux box to act as a
1662 file *server* for Novell NetWare clients.
1663
1664 General information about how to connect Linux, Windows machines and
1665 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1666
1667 To compile this as a module, choose M here: the module will be called
1668 ncpfs. Say N unless you are connected to a Novell network.
1669
1670source "fs/ncpfs/Kconfig"
1671
1672config CODA_FS
1673 tristate "Coda file system support (advanced network fs)"
1674 depends on INET
1675 help
1676 Coda is an advanced network file system, similar to NFS in that it
1677 enables you to mount file systems of a remote server and access them
1678 with regular Unix commands as if they were sitting on your hard
1679 disk. Coda has several advantages over NFS: support for
1680 disconnected operation (e.g. for laptops), read/write server
1681 replication, security model for authentication and encryption,
1682 persistent client caches and write back caching.
1683
1684 If you say Y here, your Linux box will be able to act as a Coda
1685 *client*. You will need user level code as well, both for the
1686 client and server. Servers are currently user level, i.e. they need
1687 no kernel support. Please read
1688 <file:Documentation/filesystems/coda.txt> and check out the Coda
1689 home page <http://www.coda.cs.cmu.edu/>.
1690
1691 To compile the coda client support as a module, choose M here: the
1692 module will be called coda.
1693
1694config CODA_FS_OLD_API
1695 bool "Use 96-bit Coda file identifiers"
1696 depends on CODA_FS
1697 help
1698 A new kernel-userspace API had to be introduced for Coda v6.0
1699 to support larger 128-bit file identifiers as needed by the
1700 new realms implementation.
1701
1702 However this new API is not backward compatible with older
1703 clients. If you really need to run the old Coda userspace
1704 cache manager then say Y.
1705
1706 For most cases you probably want to say N.
1707
1708config AFS_FS
1709# for fs/nls/Config.in
1710 tristate "Andrew File System support (AFS) (Experimental)"
1711 depends on INET && EXPERIMENTAL
1712 select RXRPC
1713 help
1714 If you say Y here, you will get an experimental Andrew File System
1715 driver. It currently only supports unsecured read-only AFS access.
1716
1717 See <file:Documentation/filesystems/afs.txt> for more intormation.
1718
1719 If unsure, say N.
1720
1721config RXRPC
1722 tristate
1723
1724endmenu
1725
1726menu "Partition Types"
1727
1728source "fs/partitions/Kconfig"
1729
1730endmenu
1731
1732source "fs/nls/Kconfig"
1733
1734endmenu
1735