forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathKconfig
1527 lines (1240 loc) · 53.4 KB
/
Kconfig
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#
# File system configuration
#
menu "File systems"
if BLOCK
source "fs/ext2/Kconfig"
source "fs/ext3/Kconfig"
source "fs/ext4/Kconfig"
config FS_XIP
# execute in place
bool
depends on EXT2_FS_XIP
default y
source "fs/jbd/Kconfig"
source "fs/jbd2/Kconfig"
config FS_MBCACHE
# Meta block cache for Extended Attributes (ext2/ext3/ext4)
tristate
default y if EXT2_FS=y && EXT2_FS_XATTR
default y if EXT3_FS=y && EXT3_FS_XATTR
default y if EXT4_FS=y && EXT4_FS_XATTR
default m if EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR
config REISERFS_FS
tristate "Reiserfs support"
help
Stores not just filenames but the files themselves in a balanced
tree. Uses journalling.
Balanced trees are more efficient than traditional file system
architectural foundations.
In general, ReiserFS is as fast as ext2, but is very efficient with
large directories and small files. Additional patches are needed
for NFS and quotas, please see <http://www.namesys.com/> for links.
It is more easily extended to have features currently found in
database and keyword search systems than block allocation based file
systems are. The next version will be so extended, and will support
plugins consistent with our motto ``It takes more than a license to
make source code open.''
Read <http://www.namesys.com/> to learn more about reiserfs.
Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
If you like it, you can pay us to add new features to it that you
need, buy a support contract, or pay us to port it to another OS.
config REISERFS_CHECK
bool "Enable reiserfs debug mode"
depends on REISERFS_FS
help
If you set this to Y, then ReiserFS will perform every check it can
possibly imagine of its internal consistency throughout its
operation. It will also go substantially slower. More than once we
have forgotten that this was on, and then gone despondent over the
latest benchmarks.:-) Use of this option allows our team to go all
out in checking for consistency when debugging without fear of its
effect on end users. If you are on the verge of sending in a bug
report, say Y and you might get a useful error message. Almost
everyone should say N.
config REISERFS_PROC_INFO
bool "Stats in /proc/fs/reiserfs"
depends on REISERFS_FS && PROC_FS
help
Create under /proc/fs/reiserfs a hierarchy of files, displaying
various ReiserFS statistics and internal data at the expense of
making your kernel or module slightly larger (+8 KB). This also
increases the amount of kernel memory required for each mount.
Almost everyone but ReiserFS developers and people fine-tuning
reiserfs or tracing problems should say N.
config REISERFS_FS_XATTR
bool "ReiserFS extended attributes"
depends on REISERFS_FS
help
Extended attributes are name:value pairs associated with inodes by
the kernel or by users (see the attr(5) manual page, or visit
<http://acl.bestbits.at/> for details).
If unsure, say N.
config REISERFS_FS_POSIX_ACL
bool "ReiserFS POSIX Access Control Lists"
depends on REISERFS_FS_XATTR
select FS_POSIX_ACL
help
Posix Access Control Lists (ACLs) support permissions for users and
groups beyond the owner/group/world scheme.
To learn more about Access Control Lists, visit the Posix ACLs for
Linux website <http://acl.bestbits.at/>.
If you don't know what Access Control Lists are, say N
config REISERFS_FS_SECURITY
bool "ReiserFS Security Labels"
depends on REISERFS_FS_XATTR
help
Security labels support alternative access control models
implemented by security modules like SELinux. This option
enables an extended attribute handler for file security
labels in the ReiserFS filesystem.
If you are not using a security module that requires using
extended attributes for file security labels, say N.
config JFS_FS
tristate "JFS filesystem support"
select NLS
help
This is a port of IBM's Journaled Filesystem . More information is
available in the file <file:Documentation/filesystems/jfs.txt>.
If you do not intend to use the JFS filesystem, say N.
config JFS_POSIX_ACL
bool "JFS POSIX Access Control Lists"
depends on JFS_FS
select FS_POSIX_ACL
help
Posix Access Control Lists (ACLs) support permissions for users and
groups beyond the owner/group/world scheme.
To learn more about Access Control Lists, visit the Posix ACLs for
Linux website <http://acl.bestbits.at/>.
If you don't know what Access Control Lists are, say N
config JFS_SECURITY
bool "JFS Security Labels"
depends on JFS_FS
help
Security labels support alternative access control models
implemented by security modules like SELinux. This option
enables an extended attribute handler for file security
labels in the jfs filesystem.
If you are not using a security module that requires using
extended attributes for file security labels, say N.
config JFS_DEBUG
bool "JFS debugging"
depends on JFS_FS
help
If you are experiencing any problems with the JFS filesystem, say
Y here. This will result in additional debugging messages to be
written to the system log. Under normal circumstances, this
results in very little overhead.
config JFS_STATISTICS
bool "JFS statistics"
depends on JFS_FS
help
Enabling this option will cause statistics from the JFS file system
to be made available to the user in the /proc/fs/jfs/ directory.
config FS_POSIX_ACL
# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
#
# NOTE: you can implement Posix ACLs without these helpers (XFS does).
# Never use this symbol for ifdefs.
#
bool
default n
config FILE_LOCKING
bool "Enable POSIX file locking API" if EMBEDDED
default y
help
This option enables standard file locking support, required
for filesystems like NFS and for the flock() system
call. Disabling this option saves about 11k.
source "fs/xfs/Kconfig"
source "fs/gfs2/Kconfig"
config OCFS2_FS
tristate "OCFS2 file system support"
depends on NET && SYSFS
select CONFIGFS_FS
select JBD2
select CRC32
help
OCFS2 is a general purpose extent based shared disk cluster file
system with many similarities to ext3. It supports 64 bit inode
numbers, and has automatically extending metadata groups which may
also make it attractive for non-clustered use.
You'll want to install the ocfs2-tools package in order to at least
get "mount.ocfs2".
Project web page: http://oss.oracle.com/projects/ocfs2
Tools web page: http://oss.oracle.com/projects/ocfs2-tools
OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
For more information on OCFS2, see the file
<file:Documentation/filesystems/ocfs2.txt>.
config OCFS2_FS_O2CB
tristate "O2CB Kernelspace Clustering"
depends on OCFS2_FS
default y
help
OCFS2 includes a simple kernelspace clustering package, the OCFS2
Cluster Base. It only requires a very small userspace component
to configure it. This comes with the standard ocfs2-tools package.
O2CB is limited to maintaining a cluster for OCFS2 file systems.
It cannot manage any other cluster applications.
It is always safe to say Y here, as the clustering method is
run-time selectable.
config OCFS2_FS_USERSPACE_CLUSTER
tristate "OCFS2 Userspace Clustering"
depends on OCFS2_FS && DLM
default y
help
This option will allow OCFS2 to use userspace clustering services
in conjunction with the DLM in fs/dlm. If you are using a
userspace cluster manager, say Y here.
It is safe to say Y, as the clustering method is run-time
selectable.
config OCFS2_FS_STATS
bool "OCFS2 statistics"
depends on OCFS2_FS
default y
help
This option allows some fs statistics to be captured. Enabling
this option may increase the memory consumption.
config OCFS2_DEBUG_MASKLOG
bool "OCFS2 logging support"
depends on OCFS2_FS
default y
help
The ocfs2 filesystem has an extensive logging system. The system
allows selection of events to log via files in /sys/o2cb/logmask/.
This option will enlarge your kernel, but it allows debugging of
ocfs2 filesystem issues.
config OCFS2_DEBUG_FS
bool "OCFS2 expensive checks"
depends on OCFS2_FS
default n
help
This option will enable expensive consistency checks. Enable
this option for debugging only as it is likely to decrease
performance of the filesystem.
config OCFS2_FS_POSIX_ACL
bool "OCFS2 POSIX Access Control Lists"
depends on OCFS2_FS
select FS_POSIX_ACL
default n
help
Posix Access Control Lists (ACLs) support permissions for users and
groups beyond the owner/group/world scheme.
endif # BLOCK
source "fs/notify/Kconfig"
config QUOTA
bool "Quota support"
help
If you say Y here, you will be able to set per user limits for disk
usage (also called disk quotas). Currently, it works for the
ext2, ext3, and reiserfs file system. ext3 also supports journalled
quotas for which you don't need to run quotacheck(8) after an unclean
shutdown.
For further details, read the Quota mini-HOWTO, available from
<http://www.tldp.org/docs.html#howto>, or the documentation provided
with the quota tools. Probably the quota support is only useful for
multi user systems. If unsure, say N.
config QUOTA_NETLINK_INTERFACE
bool "Report quota messages through netlink interface"
depends on QUOTA && NET
help
If you say Y here, quota warnings (about exceeding softlimit, reaching
hardlimit, etc.) will be reported through netlink interface. If unsure,
say Y.
config PRINT_QUOTA_WARNING
bool "Print quota warnings to console (OBSOLETE)"
depends on QUOTA
default y
help
If you say Y here, quota warnings (about exceeding softlimit, reaching
hardlimit, etc.) will be printed to the process' controlling terminal.
Note that this behavior is currently deprecated and may go away in
future. Please use notification via netlink socket instead.
# Generic support for tree structured quota files. Seleted when needed.
config QUOTA_TREE
tristate
config QFMT_V1
tristate "Old quota format support"
depends on QUOTA
help
This quota format was (is) used by kernels earlier than 2.4.22. If
you have quota working and you don't want to convert to new quota
format say Y here.
config QFMT_V2
tristate "Quota format v2 support"
depends on QUOTA
select QUOTA_TREE
help
This quota format allows using quotas with 32-bit UIDs/GIDs. If you
need this functionality say Y here.
config QUOTACTL
bool
depends on XFS_QUOTA || QUOTA
default y
config AUTOFS_FS
tristate "Kernel automounter support"
help
The automounter is a tool to automatically mount remote file systems
on demand. This implementation is partially kernel-based to reduce
overhead in the already-mounted case; this is unlike the BSD
automounter (amd), which is a pure user space daemon.
To use the automounter you need the user-space tools from the autofs
package; you can find the location in <file:Documentation/Changes>.
You also want to answer Y to "NFS file system support", below.
If you want to use the newer version of the automounter with more
features, say N here and say Y to "Kernel automounter v4 support",
below.
To compile this support as a module, choose M here: the module will be
called autofs.
If you are not a part of a fairly large, distributed network, you
probably do not need an automounter, and can say N here.
config AUTOFS4_FS
tristate "Kernel automounter version 4 support (also supports v3)"
help
The automounter is a tool to automatically mount remote file systems
on demand. This implementation is partially kernel-based to reduce
overhead in the already-mounted case; this is unlike the BSD
automounter (amd), which is a pure user space daemon.
To use the automounter you need the user-space tools from
<ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
want to answer Y to "NFS file system support", below.
To compile this support as a module, choose M here: the module will be
called autofs4. You will need to add "alias autofs autofs4" to your
modules configuration file.
If you are not a part of a fairly large, distributed network or
don't have a laptop which needs to dynamically reconfigure to the
local network, you probably do not need an automounter, and can say
N here.
config FUSE_FS
tristate "FUSE (Filesystem in Userspace) support"
help
With FUSE it is possible to implement a fully functional filesystem
in a userspace program.
There's also companion library: libfuse. This library along with
utilities is available from the FUSE homepage:
<http://fuse.sourceforge.net/>
See <file:Documentation/filesystems/fuse.txt> for more information.
See <file:Documentation/Changes> for needed library/utility version.
If you want to develop a userspace FS, or if you want to use
a filesystem based on FUSE, answer Y or M.
config GENERIC_ACL
bool
select FS_POSIX_ACL
if BLOCK
menu "CD-ROM/DVD Filesystems"
config ISO9660_FS
tristate "ISO 9660 CDROM file system support"
help
This is the standard file system used on CD-ROMs. It was previously
known as "High Sierra File System" and is called "hsfs" on other
Unix systems. The so-called Rock-Ridge extensions which allow for
long Unix filenames and symbolic links are also supported by this
driver. If you have a CD-ROM drive and want to do more with it than
just listen to audio CDs and watch its LEDs, say Y (and read
<file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
available from <http://www.tldp.org/docs.html#howto>), thereby
enlarging your kernel by about 27 KB; otherwise say N.
To compile this file system support as a module, choose M here: the
module will be called isofs.
config JOLIET
bool "Microsoft Joliet CDROM extensions"
depends on ISO9660_FS
select NLS
help
Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
which allows for long filenames in unicode format (unicode is the
new 16 bit character code, successor to ASCII, which encodes the
characters of almost all languages of the world; see
<http://www.unicode.org/> for more information). Say Y here if you
want to be able to read Joliet CD-ROMs under Linux.
config ZISOFS
bool "Transparent decompression extension"
depends on ISO9660_FS
select ZLIB_INFLATE
help
This is a Linux-specific extension to RockRidge which lets you store
data in compressed form on a CD-ROM and have it transparently
decompressed when the CD-ROM is accessed. See
<http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
necessary to create such a filesystem. Say Y here if you want to be
able to read such compressed CD-ROMs.
config UDF_FS
tristate "UDF file system support"
select CRC_ITU_T
help
This is the new file system used on some CD-ROMs and DVDs. Say Y if
you intend to mount DVD discs or CDRW's written in packet mode, or
if written to by other UDF utilities, such as DirectCD.
Please read <file:Documentation/filesystems/udf.txt>.
To compile this file system support as a module, choose M here: the
module will be called udf.
If unsure, say N.
config UDF_NLS
bool
default y
depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
endmenu
endif # BLOCK
if BLOCK
menu "DOS/FAT/NT Filesystems"
config FAT_FS
tristate
select NLS
help
If you want to use one of the FAT-based file systems (the MS-DOS and
VFAT (Windows 95) file systems), then you must say Y or M here
to include FAT support. You will then be able to mount partitions or
diskettes with FAT-based file systems and transparently access the
files on them, i.e. MSDOS files will look and behave just like all
other Unix files.
This FAT support is not a file system in itself, it only provides
the foundation for the other file systems. You will have to say Y or
M to at least one of "MSDOS fs support" or "VFAT fs support" in
order to make use of it.
Another way to read and write MSDOS floppies and hard drive
partitions from within Linux (but not transparently) is with the
mtools ("man mtools") program suite. You don't need to say Y here in
order to do that.
If you need to move large files on floppies between a DOS and a
Linux box, say Y here, mount the floppy under Linux with an MSDOS
file system and use GNU tar's M option. GNU tar is a program
available for Unix and DOS ("man tar" or "info tar").
The FAT support will enlarge your kernel by about 37 KB. If unsure,
say Y.
To compile this as a module, choose M here: the module will be called
fat. Note that if you compile the FAT support as a module, you
cannot compile any of the FAT-based file systems into the kernel
-- they will have to be modules as well.
config MSDOS_FS
tristate "MSDOS fs support"
select FAT_FS
help
This allows you to mount MSDOS partitions of your hard drive (unless
they are compressed; to access compressed MSDOS partitions under
Linux, you can either use the DOS emulator DOSEMU, described in the
DOSEMU-HOWTO, available from
<http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
<ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
intend to use dosemu with a non-compressed MSDOS partition, say Y
here) and MSDOS floppies. This means that file access becomes
transparent, i.e. the MSDOS files look and behave just like all
other Unix files.
If you have Windows 95 or Windows NT installed on your MSDOS
partitions, you should use the VFAT file system (say Y to "VFAT fs
support" below), or you will not be able to see the long filenames
generated by Windows 95 / Windows NT.
This option will enlarge your kernel by about 7 KB. If unsure,
answer Y. This will only work if you said Y to "DOS FAT fs support"
as well. To compile this as a module, choose M here: the module will
be called msdos.
config VFAT_FS
tristate "VFAT (Windows-95) fs support"
select FAT_FS
help
This option provides support for normal Windows file systems with
long filenames. That includes non-compressed FAT-based file systems
used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
programs from the mtools package.
The VFAT support enlarges your kernel by about 10 KB and it only
works if you said Y to the "DOS FAT fs support" above. Please read
the file <file:Documentation/filesystems/vfat.txt> for details. If
unsure, say Y.
To compile this as a module, choose M here: the module will be called
vfat.
config FAT_DEFAULT_CODEPAGE
int "Default codepage for FAT"
depends on MSDOS_FS || VFAT_FS
default 437
help
This option should be set to the codepage of your FAT filesystems.
It can be overridden with the "codepage" mount option.
See <file:Documentation/filesystems/vfat.txt> for more information.
config FAT_DEFAULT_IOCHARSET
string "Default iocharset for FAT"
depends on VFAT_FS
default "iso8859-1"
help
Set this to the default input/output character set you'd
like FAT to use. It should probably match the character set
that most of your FAT filesystems use, and can be overridden
with the "iocharset" mount option for FAT filesystems.
Note that "utf8" is not recommended for FAT filesystems.
If unsure, you shouldn't set "utf8" here.
See <file:Documentation/filesystems/vfat.txt> for more information.
config NTFS_FS
tristate "NTFS file system support"
select NLS
help
NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
Saying Y or M here enables read support. There is partial, but
safe, write support available. For write support you must also
say Y to "NTFS write support" below.
There are also a number of user-space tools available, called
ntfsprogs. These include ntfsundelete and ntfsresize, that work
without NTFS support enabled in the kernel.
This is a rewrite from scratch of Linux NTFS support and replaced
the old NTFS code starting with Linux 2.5.11. A backport to
the Linux 2.4 kernel series is separately available as a patch
from the project web site.
For more information see <file:Documentation/filesystems/ntfs.txt>
and <http://www.linux-ntfs.org/>.
To compile this file system support as a module, choose M here: the
module will be called ntfs.
If you are not using Windows NT, 2000, XP or 2003 in addition to
Linux on your computer it is safe to say N.
config NTFS_DEBUG
bool "NTFS debugging support"
depends on NTFS_FS
help
If you are experiencing any problems with the NTFS file system, say
Y here. This will result in additional consistency checks to be
performed by the driver as well as additional debugging messages to
be written to the system log. Note that debugging messages are
disabled by default. To enable them, supply the option debug_msgs=1
at the kernel command line when booting the kernel or as an option
to insmod when loading the ntfs module. Once the driver is active,
you can enable debugging messages by doing (as root):
echo 1 > /proc/sys/fs/ntfs-debug
Replacing the "1" with "0" would disable debug messages.
If you leave debugging messages disabled, this results in little
overhead, but enabling debug messages results in very significant
slowdown of the system.
When reporting bugs, please try to have available a full dump of
debugging messages while the misbehaviour was occurring.
config NTFS_RW
bool "NTFS write support"
depends on NTFS_FS
help
This enables the partial, but safe, write support in the NTFS driver.
The only supported operation is overwriting existing files, without
changing the file length. No file or directory creation, deletion or
renaming is possible. Note only non-resident files can be written to
so you may find that some very small files (<500 bytes or so) cannot
be written to.
While we cannot guarantee that it will not damage any data, we have
so far not received a single report where the driver would have
damaged someones data so we assume it is perfectly safe to use.
Note: While write support is safe in this version (a rewrite from
scratch of the NTFS support), it should be noted that the old NTFS
write support, included in Linux 2.5.10 and before (since 1997),
is not safe.
This is currently useful with TopologiLinux. TopologiLinux is run
on top of any DOS/Microsoft Windows system without partitioning your
hard disk. Unlike other Linux distributions TopologiLinux does not
need its own partition. For more information see
<http://topologi-linux.sourceforge.net/>
It is perfectly safe to say N here.
endmenu
endif # BLOCK
menu "Pseudo filesystems"
source "fs/proc/Kconfig"
config SYSFS
bool "sysfs file system support" if EMBEDDED
default y
help
The sysfs filesystem is a virtual filesystem that the kernel uses to
export internal kernel objects, their attributes, and their
relationships to one another.
Users can use sysfs to ascertain useful information about the running
kernel, such as the devices the kernel has discovered on each bus and
which driver each is bound to. sysfs can also be used to tune devices
and other kernel subsystems.
Some system agents rely on the information in sysfs to operate.
/sbin/hotplug uses device and object attributes in sysfs to assist in
delegating policy decisions, like persistently naming devices.
sysfs is currently used by the block subsystem to mount the root
partition. If sysfs is disabled you must specify the boot device on
the kernel boot command line via its major and minor numbers. For
example, "root=03:01" for /dev/hda1.
Designers of embedded systems may wish to say N here to conserve space.
config TMPFS
bool "Virtual memory file system support (former shm fs)"
help
Tmpfs is a file system which keeps all files in virtual memory.
Everything in tmpfs is temporary in the sense that no files will be
created on your hard drive. The files live in memory and swap
space. If you unmount a tmpfs instance, everything stored therein is
lost.
See <file:Documentation/filesystems/tmpfs.txt> for details.
config TMPFS_POSIX_ACL
bool "Tmpfs POSIX Access Control Lists"
depends on TMPFS
select GENERIC_ACL
help
POSIX Access Control Lists (ACLs) support permissions for users and
groups beyond the owner/group/world scheme.
To learn more about Access Control Lists, visit the POSIX ACLs for
Linux website <http://acl.bestbits.at/>.
If you don't know what Access Control Lists are, say N.
config HUGETLBFS
bool "HugeTLB file system support"
depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
(S390 && 64BIT) || BROKEN
help
hugetlbfs is a filesystem backing for HugeTLB pages, based on
ramfs. For architectures that support it, say Y here and read
<file:Documentation/vm/hugetlbpage.txt> for details.
If unsure, say N.
config HUGETLB_PAGE
def_bool HUGETLBFS
config CONFIGFS_FS
tristate "Userspace-driven configuration filesystem"
depends on SYSFS
help
configfs is a ram-based filesystem that provides the converse
of sysfs's functionality. Where sysfs is a filesystem-based
view of kernel objects, configfs is a filesystem-based manager
of kernel objects, or config_items.
Both sysfs and configfs can and should exist together on the
same system. One is not a replacement for the other.
endmenu
menu "Miscellaneous filesystems"
config ADFS_FS
tristate "ADFS file system support (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
help
The Acorn Disc Filing System is the standard file system of the
RiscOS operating system which runs on Acorn's ARM-based Risc PC
systems and the Acorn Archimedes range of machines. If you say Y
here, Linux will be able to read from ADFS partitions on hard drives
and from ADFS-formatted floppy discs. If you also want to be able to
write to those devices, say Y to "ADFS write support" below.
The ADFS partition should be the first partition (i.e.,
/dev/[hs]d?1) on each of your drives. Please read the file
<file:Documentation/filesystems/adfs.txt> for further details.
To compile this code as a module, choose M here: the module will be
called adfs.
If unsure, say N.
config ADFS_FS_RW
bool "ADFS write support (DANGEROUS)"
depends on ADFS_FS
help
If you say Y here, you will be able to write to ADFS partitions on
hard drives and ADFS-formatted floppy disks. This is experimental
codes, so if you're unsure, say N.
config AFFS_FS
tristate "Amiga FFS file system support (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
help
The Fast File System (FFS) is the common file system used on hard
disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
if you want to be able to read and write files from and to an Amiga
FFS partition on your hard drive. Amiga floppies however cannot be
read with this driver due to an incompatibility of the floppy
controller used in an Amiga and the standard floppy controller in
PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
and <file:fs/affs/Changes>.
With this driver you can also mount disk files used by Bernd
Schmidt's Un*X Amiga Emulator
(<http://www.freiburg.linux.de/~uae/>).
If you want to do this, you will also need to say Y or M to "Loop
device support", above.
To compile this file system support as a module, choose M here: the
module will be called affs. If unsure, say N.
config ECRYPT_FS
tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
depends on EXPERIMENTAL && KEYS && CRYPTO && NET
help
Encrypted filesystem that operates on the VFS layer. See
<file:Documentation/filesystems/ecryptfs.txt> to learn more about
eCryptfs. Userspace components are required and can be
obtained from <http://ecryptfs.sf.net>.
To compile this file system support as a module, choose M here: the
module will be called ecryptfs.
config HFS_FS
tristate "Apple Macintosh file system support (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
select NLS
help
If you say Y here, you will be able to mount Macintosh-formatted
floppy disks and hard drive partitions with full read-write access.
Please read <file:Documentation/filesystems/hfs.txt> to learn about
the available mount options.
To compile this file system support as a module, choose M here: the
module will be called hfs.
config HFSPLUS_FS
tristate "Apple Extended HFS file system support"
depends on BLOCK
select NLS
select NLS_UTF8
help
If you say Y here, you will be able to mount extended format
Macintosh-formatted hard drive partitions with full read-write access.
This file system is often called HFS+ and was introduced with
MacOS 8. It includes all Mac specific filesystem data such as
data forks and creator codes, but it also has several UNIX
style features such as file ownership and permissions.
config BEFS_FS
tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
select NLS
help
The BeOS File System (BeFS) is the native file system of Be, Inc's
BeOS. Notable features include support for arbitrary attributes
on files and directories, and database-like indices on selected
attributes. (Also note that this driver doesn't make those features
available at this time). It is a 64 bit filesystem, so it supports
extremely large volumes and files.
If you use this filesystem, you should also say Y to at least one
of the NLS (native language support) options below.
If you don't know what this is about, say N.
To compile this as a module, choose M here: the module will be
called befs.
config BEFS_DEBUG
bool "Debug BeFS"
depends on BEFS_FS
help
If you say Y here, you can use the 'debug' mount option to enable
debugging output from the driver.
config BFS_FS
tristate "BFS file system support (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
help
Boot File System (BFS) is a file system used under SCO UnixWare to
allow the bootloader access to the kernel image and other important
files during the boot process. It is usually mounted under /stand
and corresponds to the slice marked as "STAND" in the UnixWare
partition. You should say Y if you want to read or write the files
on your /stand slice from within Linux. You then also need to say Y
to "UnixWare slices support", below. More information about the BFS
file system is contained in the file
<file:Documentation/filesystems/bfs.txt>.
If you don't know what this is about, say N.
To compile this as a module, choose M here: the module will be called
bfs. Note that the file system of your root partition (the one
containing the directory /) cannot be compiled as a module.
config EFS_FS
tristate "EFS file system support (read only) (EXPERIMENTAL)"
depends on BLOCK && EXPERIMENTAL
help
EFS is an older file system used for non-ISO9660 CD-ROMs and hard
disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
uses the XFS file system for hard disk partitions however).
This implementation only offers read-only access. If you don't know
what all this is about, it's safe to say N. For more information
about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
To compile the EFS file system support as a module, choose M here: the
module will be called efs.
source "fs/jffs2/Kconfig"
# UBIFS File system configuration
source "fs/ubifs/Kconfig"
config CRAMFS
tristate "Compressed ROM file system support (cramfs)"
depends on BLOCK
select ZLIB_INFLATE
help
Saying Y here includes support for CramFs (Compressed ROM File
System). CramFs is designed to be a simple, small, and compressed
file system for ROM based embedded systems. CramFs is read-only,
limited to 256MB file systems (with 16MB files), and doesn't support
16/32 bits uid/gid, hard links and timestamps.
See <file:Documentation/filesystems/cramfs.txt> and
<file:fs/cramfs/README> for further information.
To compile this as a module, choose M here: the module will be called
cramfs. Note that the root file system (the one containing the
directory /) cannot be compiled as a module.
If unsure, say N.
config VXFS_FS
tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
depends on BLOCK
help
FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
file system format. VERITAS VxFS(TM) is the standard file system
of SCO UnixWare (and possibly others) and optionally available
for Sunsoft Solaris, HP-UX and many other operating systems.
Currently only readonly access is supported.
NOTE: the file system type as used by mount(1), mount(2) and
fstab(5) is 'vxfs' as it describes the file system format, not
the actual driver.
To compile this as a module, choose M here: the module will be
called freevxfs. If unsure, say N.
config MINIX_FS
tristate "Minix file system support"
depends on BLOCK
help
Minix is a simple operating system used in many classes about OS's.
The minix file system (method to organize files on a hard disk
partition or a floppy disk) was the original file system for Linux,
but has been superseded by the second extended file system ext2fs.
You don't want to use the minix file system on your hard disk
because of certain built-in restrictions, but it is sometimes found
on older Linux floppy disks. This option will enlarge your kernel
by about 28 KB. If unsure, say N.
To compile this file system support as a module, choose M here: the
module will be called minix. Note that the file system of your root
partition (the one containing the directory /) cannot be compiled as
a module.
config OMFS_FS
tristate "SonicBlue Optimized MPEG File System support"
depends on BLOCK
select CRC_ITU_T
help
This is the proprietary file system used by the Rio Karma music
player and ReplayTV DVR. Despite the name, this filesystem is not
more efficient than a standard FS for MPEG files, in fact likely
the opposite is true. Say Y if you have either of these devices
and wish to mount its disk.
To compile this file system support as a module, choose M here: the
module will be called omfs. If unsure, say N.
config HPFS_FS
tristate "OS/2 HPFS file system support"
depends on BLOCK
help
OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
is the file system used for organizing files on OS/2 hard disk
partitions. Say Y if you want to be able to read files from and
write files to an OS/2 HPFS partition on your hard drive. OS/2
floppies however are in regular MSDOS format, so you don't need this
option in order to be able to read them. Read
<file:Documentation/filesystems/hpfs.txt>.
To compile this file system support as a module, choose M here: the
module will be called hpfs. If unsure, say N.
config QNX4FS_FS
tristate "QNX4 file system support (read only)"
depends on BLOCK
help
This is the file system used by the real-time operating systems
QNX 4 and QNX 6 (the latter is also called QNX RTP).
Further information is available at <http://www.qnx.com/>.
Say Y if you intend to mount QNX hard disks or floppies.
Unless you say Y to "QNX4FS read-write support" below, you will
only be able to read these file systems.
To compile this file system support as a module, choose M here: the
module will be called qnx4.
If you don't know whether you need it, then you don't need it:
answer N.
config QNX4FS_RW
bool "QNX4FS write support (DANGEROUS)"
depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
help
Say Y if you want to test write support for QNX4 file systems.
It's currently broken, so for now:
answer N.
config ROMFS_FS
tristate "ROM file system support"
depends on BLOCK
---help---
This is a very small read-only file system mainly intended for
initial ram disks of installation disks, but it could be used for
other read-only media as well. Read
<file:Documentation/filesystems/romfs.txt> for details.