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1#
2# File system configuration
3#
4
5menu "File systems"
6
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7if BLOCK
8
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9config EXT2_FS
10 tristate "Second extended fs support"
11 help
12 Ext2 is a standard Linux file system for hard disks.
13
14 To compile this file system support as a module, choose M here: the
d23edbd3 15 module will be called ext2.
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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
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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
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54config EXT2_FS_XIP
55 bool "Ext2 execute in place support"
0c426f26 56 depends on EXT2_FS && MMU
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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
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71config EXT3_FS
72 tristate "Ext3 journalling file system support"
b4e40a51 73 select JBD
1da177e4 74 help
cc2e2767 75 This is the journalling version of the Second extended file system
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76 (often called ext3), the de facto standard Linux file system
77 (method to organize files on a storage device) for hard disks.
78
cc2e2767 79 The journalling code included in this driver means you do not have
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80 to run e2fsck (file system checker) on your file systems after a
81 crash. The journal keeps track of any changes that were being made
82 at the time the system crashed, and can ensure that your file system
83 is consistent without the need for a lengthy check.
84
85 Other than adding the journal to the file system, the on-disk format
86 of ext3 is identical to ext2. It is possible to freely switch
87 between using the ext3 driver and the ext2 driver, as long as the
88 file system has been cleanly unmounted, or e2fsck is run on the file
89 system.
90
91 To add a journal on an existing ext2 file system or change the
92 behavior of ext3 file systems, you can use the tune2fs utility ("man
93 tune2fs"). To modify attributes of files and directories on ext3
94 file systems, use chattr ("man chattr"). You need to be using
95 e2fsprogs version 1.20 or later in order to create ext3 journals
96 (available at <http://sourceforge.net/projects/e2fsprogs/>).
97
98 To compile this file system support as a module, choose M here: the
d23edbd3 99 module will be called ext3.
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100
101config EXT3_FS_XATTR
102 bool "Ext3 extended attributes"
103 depends on EXT3_FS
104 default y
105 help
106 Extended attributes are name:value pairs associated with inodes by
107 the kernel or by users (see the attr(5) manual page, or visit
108 <http://acl.bestbits.at/> for details).
109
110 If unsure, say N.
111
112 You need this for POSIX ACL support on ext3.
113
114config EXT3_FS_POSIX_ACL
115 bool "Ext3 POSIX Access Control Lists"
116 depends on EXT3_FS_XATTR
b84c2157 117 select FS_POSIX_ACL
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118 help
119 Posix Access Control Lists (ACLs) support permissions for users and
120 groups beyond the owner/group/world scheme.
121
122 To learn more about Access Control Lists, visit the Posix ACLs for
123 Linux website <http://acl.bestbits.at/>.
124
125 If you don't know what Access Control Lists are, say N
126
127config EXT3_FS_SECURITY
128 bool "Ext3 Security Labels"
129 depends on EXT3_FS_XATTR
130 help
131 Security labels support alternative access control models
132 implemented by security modules like SELinux. This option
133 enables an extended attribute handler for file security
134 labels in the ext3 filesystem.
135
136 If you are not using a security module that requires using
137 extended attributes for file security labels, say N.
138
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139config EXT4DEV_FS
140 tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)"
141 depends on EXPERIMENTAL
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142 select JBD2
143 help
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144 Ext4dev is a predecessor filesystem of the next generation
145 extended fs ext4, based on ext3 filesystem code. It will be
146 renamed ext4 fs later, once ext4dev is mature and stabilized.
147
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148 Unlike the change from ext2 filesystem to ext3 filesystem,
149 the on-disk format of ext4dev is not the same as ext3 any more:
02ea2104 150 it is based on extent maps and it supports 48-bit physical block
dab291af 151 numbers. These combined on-disk format changes will allow
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152 ext4dev/ext4 to handle more than 16 TB filesystem volumes --
153 a hard limit that ext3 cannot overcome without changing the
dab291af 154 on-disk format.
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155
156 Other than extent maps and 48-bit block numbers, ext4dev also is
dab291af 157 likely to have other new features such as persistent preallocation,
02ea2104 158 high resolution time stamps, and larger file support etc. These
dab291af 159 features will be added to ext4dev gradually.
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160
161 To compile this file system support as a module, choose M here. The
d23edbd3 162 module will be called ext4dev.
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163
164 If unsure, say N.
165
166config EXT4DEV_FS_XATTR
167 bool "Ext4dev extended attributes"
168 depends on EXT4DEV_FS
169 default y
170 help
171 Extended attributes are name:value pairs associated with inodes by
172 the kernel or by users (see the attr(5) manual page, or visit
173 <http://acl.bestbits.at/> for details).
174
175 If unsure, say N.
176
177 You need this for POSIX ACL support on ext4dev/ext4.
178
179config EXT4DEV_FS_POSIX_ACL
180 bool "Ext4dev POSIX Access Control Lists"
181 depends on EXT4DEV_FS_XATTR
182 select FS_POSIX_ACL
183 help
184 POSIX Access Control Lists (ACLs) support permissions for users and
185 groups beyond the owner/group/world scheme.
186
187 To learn more about Access Control Lists, visit the POSIX ACLs for
188 Linux website <http://acl.bestbits.at/>.
189
190 If you don't know what Access Control Lists are, say N
191
192config EXT4DEV_FS_SECURITY
193 bool "Ext4dev Security Labels"
194 depends on EXT4DEV_FS_XATTR
195 help
196 Security labels support alternative access control models
197 implemented by security modules like SELinux. This option
198 enables an extended attribute handler for file security
199 labels in the ext4dev/ext4 filesystem.
200
201 If you are not using a security module that requires using
202 extended attributes for file security labels, say N.
203
1da177e4 204config JBD
1da177e4 205 tristate
1da177e4 206 help
cc2e2767 207 This is a generic journalling layer for block devices. It is
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208 currently used by the ext3 and OCFS2 file systems, but it could
209 also be used to add journal support to other file systems or block
210 devices such as RAID or LVM.
1da177e4 211
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212 If you are using the ext3 or OCFS2 file systems, you need to
213 say Y here. If you are not using ext3 OCFS2 then you will probably
214 want to say N.
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215
216 To compile this device as a module, choose M here: the module will be
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217 called jbd. If you are compiling ext3 or OCFS2 into the kernel,
218 you cannot compile this code as a module.
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219
220config JBD_DEBUG
221 bool "JBD (ext3) debugging support"
222 depends on JBD
223 help
224 If you are using the ext3 journaled file system (or potentially any
225 other file system/device using JBD), this option allows you to
226 enable debugging output while the system is running, in order to
227 help track down any problems you are having. By default the
228 debugging output will be turned off.
229
230 If you select Y here, then you will be able to turn on debugging
231 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
232 1 and 5, the higher the number, the more debugging output is
233 generated. To turn debugging off again, do
234 "echo 0 > /proc/sys/fs/jbd-debug".
235
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236config JBD2
237 tristate
238 help
239 This is a generic journaling layer for block devices that support
240 both 32-bit and 64-bit block numbers. It is currently used by
241 the ext4dev/ext4 filesystem, but it could also be used to add
242 journal support to other file systems or block devices such
243 as RAID or LVM.
244
245 If you are using ext4dev/ext4, you need to say Y here. If you are not
246 using ext4dev/ext4 then you will probably want to say N.
247
248 To compile this device as a module, choose M here. The module will be
249 called jbd2. If you are compiling ext4dev/ext4 into the kernel,
250 you cannot compile this code as a module.
251
252config JBD2_DEBUG
253 bool "JBD2 (ext4dev/ext4) debugging support"
0f49d5d0 254 depends on JBD2 && DEBUG_FS
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255 help
256 If you are using the ext4dev/ext4 journaled file system (or
257 potentially any other filesystem/device using JBD2), this option
258 allows you to enable debugging output while the system is running,
259 in order to help track down any problems you are having.
260 By default, the debugging output will be turned off.
261
262 If you select Y here, then you will be able to turn on debugging
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263 with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
264 number between 1 and 5. The higher the number, the more debugging
265 output is generated. To turn debugging off again, do
266 "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
dab291af 267
1da177e4 268config FS_MBCACHE
02ea2104 269# Meta block cache for Extended Attributes (ext2/ext3/ext4)
1da177e4 270 tristate
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271 depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
272 default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
273 default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
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274
275config REISERFS_FS
276 tristate "Reiserfs support"
277 help
278 Stores not just filenames but the files themselves in a balanced
cc2e2767 279 tree. Uses journalling.
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280
281 Balanced trees are more efficient than traditional file system
282 architectural foundations.
283
284 In general, ReiserFS is as fast as ext2, but is very efficient with
285 large directories and small files. Additional patches are needed
286 for NFS and quotas, please see <http://www.namesys.com/> for links.
287
288 It is more easily extended to have features currently found in
289 database and keyword search systems than block allocation based file
290 systems are. The next version will be so extended, and will support
291 plugins consistent with our motto ``It takes more than a license to
292 make source code open.''
293
294 Read <http://www.namesys.com/> to learn more about reiserfs.
295
296 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
297
298 If you like it, you can pay us to add new features to it that you
299 need, buy a support contract, or pay us to port it to another OS.
300
301config REISERFS_CHECK
302 bool "Enable reiserfs debug mode"
303 depends on REISERFS_FS
304 help
305 If you set this to Y, then ReiserFS will perform every check it can
306 possibly imagine of its internal consistency throughout its
307 operation. It will also go substantially slower. More than once we
308 have forgotten that this was on, and then gone despondent over the
309 latest benchmarks.:-) Use of this option allows our team to go all
310 out in checking for consistency when debugging without fear of its
311 effect on end users. If you are on the verge of sending in a bug
312 report, say Y and you might get a useful error message. Almost
313 everyone should say N.
314
315config REISERFS_PROC_INFO
316 bool "Stats in /proc/fs/reiserfs"
880ebdc5 317 depends on REISERFS_FS && PROC_FS
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318 help
319 Create under /proc/fs/reiserfs a hierarchy of files, displaying
320 various ReiserFS statistics and internal data at the expense of
321 making your kernel or module slightly larger (+8 KB). This also
322 increases the amount of kernel memory required for each mount.
323 Almost everyone but ReiserFS developers and people fine-tuning
324 reiserfs or tracing problems should say N.
325
326config REISERFS_FS_XATTR
327 bool "ReiserFS extended attributes"
328 depends on REISERFS_FS
329 help
330 Extended attributes are name:value pairs associated with inodes by
331 the kernel or by users (see the attr(5) manual page, or visit
332 <http://acl.bestbits.at/> for details).
333
334 If unsure, say N.
335
336config REISERFS_FS_POSIX_ACL
337 bool "ReiserFS POSIX Access Control Lists"
338 depends on REISERFS_FS_XATTR
b84c2157 339 select FS_POSIX_ACL
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340 help
341 Posix Access Control Lists (ACLs) support permissions for users and
342 groups beyond the owner/group/world scheme.
343
344 To learn more about Access Control Lists, visit the Posix ACLs for
345 Linux website <http://acl.bestbits.at/>.
346
347 If you don't know what Access Control Lists are, say N
348
349config REISERFS_FS_SECURITY
350 bool "ReiserFS Security Labels"
351 depends on REISERFS_FS_XATTR
352 help
353 Security labels support alternative access control models
354 implemented by security modules like SELinux. This option
355 enables an extended attribute handler for file security
356 labels in the ReiserFS filesystem.
357
358 If you are not using a security module that requires using
359 extended attributes for file security labels, say N.
360
361config JFS_FS
362 tristate "JFS filesystem support"
363 select NLS
364 help
365 This is a port of IBM's Journaled Filesystem . More information is
366 available in the file <file:Documentation/filesystems/jfs.txt>.
367
368 If you do not intend to use the JFS filesystem, say N.
369
370config JFS_POSIX_ACL
371 bool "JFS POSIX Access Control Lists"
372 depends on JFS_FS
b84c2157 373 select FS_POSIX_ACL
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374 help
375 Posix Access Control Lists (ACLs) support permissions for users and
376 groups beyond the owner/group/world scheme.
377
378 To learn more about Access Control Lists, visit the Posix ACLs for
379 Linux website <http://acl.bestbits.at/>.
380
381 If you don't know what Access Control Lists are, say N
382
383config JFS_SECURITY
384 bool "JFS Security Labels"
385 depends on JFS_FS
386 help
387 Security labels support alternative access control models
388 implemented by security modules like SELinux. This option
389 enables an extended attribute handler for file security
390 labels in the jfs filesystem.
391
392 If you are not using a security module that requires using
393 extended attributes for file security labels, say N.
394
395config JFS_DEBUG
396 bool "JFS debugging"
397 depends on JFS_FS
398 help
399 If you are experiencing any problems with the JFS filesystem, say
400 Y here. This will result in additional debugging messages to be
401 written to the system log. Under normal circumstances, this
402 results in very little overhead.
403
404config JFS_STATISTICS
405 bool "JFS statistics"
406 depends on JFS_FS
407 help
408 Enabling this option will cause statistics from the JFS file system
409 to be made available to the user in the /proc/fs/jfs/ directory.
410
411config FS_POSIX_ACL
412# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
413#
414# NOTE: you can implement Posix ACLs without these helpers (XFS does).
415# Never use this symbol for ifdefs.
416#
417 bool
b84c2157 418 default n
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419
420source "fs/xfs/Kconfig"
f7825dcf 421source "fs/gfs2/Kconfig"
1da177e4 422
b4e40a51 423config OCFS2_FS
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424 tristate "OCFS2 file system support"
425 depends on NET && SYSFS
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426 select CONFIGFS_FS
427 select JBD
428 select CRC32
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429 help
430 OCFS2 is a general purpose extent based shared disk cluster file
431 system with many similarities to ext3. It supports 64 bit inode
432 numbers, and has automatically extending metadata groups which may
433 also make it attractive for non-clustered use.
434
435 You'll want to install the ocfs2-tools package in order to at least
436 get "mount.ocfs2".
437
438 Project web page: http://oss.oracle.com/projects/ocfs2
439 Tools web page: http://oss.oracle.com/projects/ocfs2-tools
440 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
441
442 Note: Features which OCFS2 does not support yet:
443 - extended attributes
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444 - quotas
445 - cluster aware flock
446 - Directory change notification (F_NOTIFY)
447 - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
448 - POSIX ACLs
449 - readpages / writepages (not user visible)
450
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451config OCFS2_DEBUG_MASKLOG
452 bool "OCFS2 logging support"
453 depends on OCFS2_FS
454 default y
455 help
456 The ocfs2 filesystem has an extensive logging system. The system
457 allows selection of events to log via files in /sys/o2cb/logmask/.
458 This option will enlarge your kernel, but it allows debugging of
459 ocfs2 filesystem issues.
460
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461config MINIX_FS
462 tristate "Minix fs support"
463 help
464 Minix is a simple operating system used in many classes about OS's.
465 The minix file system (method to organize files on a hard disk
466 partition or a floppy disk) was the original file system for Linux,
467 but has been superseded by the second extended file system ext2fs.
468 You don't want to use the minix file system on your hard disk
469 because of certain built-in restrictions, but it is sometimes found
470 on older Linux floppy disks. This option will enlarge your kernel
471 by about 28 KB. If unsure, say N.
472
473 To compile this file system support as a module, choose M here: the
474 module will be called minix. Note that the file system of your root
475 partition (the one containing the directory /) cannot be compiled as
476 a module.
477
478config ROMFS_FS
479 tristate "ROM file system support"
480 ---help---
481 This is a very small read-only file system mainly intended for
482 initial ram disks of installation disks, but it could be used for
483 other read-only media as well. Read
484 <file:Documentation/filesystems/romfs.txt> for details.
485
486 To compile this file system support as a module, choose M here: the
487 module will be called romfs. Note that the file system of your
488 root partition (the one containing the directory /) cannot be a
489 module.
490
491 If you don't know whether you need it, then you don't need it:
492 answer N.
493
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494endif
495
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496config INOTIFY
497 bool "Inotify file change notification support"
498 default y
499 ---help---
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500 Say Y here to enable inotify support. Inotify is a file change
501 notification system and a replacement for dnotify. Inotify fixes
502 numerous shortcomings in dnotify and introduces several new features
503 including multiple file events, one-shot support, and unmount
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504 notification.
505
506 For more information, see Documentation/filesystems/inotify.txt
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507
508 If unsure, say Y.
509
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510config INOTIFY_USER
511 bool "Inotify support for userspace"
512 depends on INOTIFY
513 default y
514 ---help---
515 Say Y here to enable inotify support for userspace, including the
516 associated system calls. Inotify allows monitoring of both files and
517 directories via a single open fd. Events are read from the file
518 descriptor, which is also select()- and poll()-able.
519
520 For more information, see Documentation/filesystems/inotify.txt
521
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522 If unsure, say Y.
523
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524config QUOTA
525 bool "Quota support"
526 help
527 If you say Y here, you will be able to set per user limits for disk
528 usage (also called disk quotas). Currently, it works for the
529 ext2, ext3, and reiserfs file system. ext3 also supports journalled
530 quotas for which you don't need to run quotacheck(8) after an unclean
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531 shutdown.
532 For further details, read the Quota mini-HOWTO, available from
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533 <http://www.tldp.org/docs.html#howto>, or the documentation provided
534 with the quota tools. Probably the quota support is only useful for
535 multi user systems. If unsure, say N.
536
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537config QUOTA_NETLINK_INTERFACE
538 bool "Report quota messages through netlink interface"
539 depends on QUOTA && NET
540 help
541 If you say Y here, quota warnings (about exceeding softlimit, reaching
542 hardlimit, etc.) will be reported through netlink interface. If unsure,
543 say Y.
544
545config PRINT_QUOTA_WARNING
546 bool "Print quota warnings to console (OBSOLETE)"
547 depends on QUOTA
548 default y
549 help
550 If you say Y here, quota warnings (about exceeding softlimit, reaching
551 hardlimit, etc.) will be printed to the process' controlling terminal.
552 Note that this behavior is currently deprecated and may go away in
553 future. Please use notification via netlink socket instead.
554
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555config QFMT_V1
556 tristate "Old quota format support"
557 depends on QUOTA
558 help
559 This quota format was (is) used by kernels earlier than 2.4.22. If
560 you have quota working and you don't want to convert to new quota
561 format say Y here.
562
563config QFMT_V2
564 tristate "Quota format v2 support"
565 depends on QUOTA
566 help
567 This quota format allows using quotas with 32-bit UIDs/GIDs. If you
919532a5 568 need this functionality say Y here.
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569
570config QUOTACTL
571 bool
572 depends on XFS_QUOTA || QUOTA
573 default y
574
575config DNOTIFY
7e341fa1 576 bool "Dnotify support"
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577 default y
578 help
579 Dnotify is a directory-based per-fd file change notification system
580 that uses signals to communicate events to user-space. There exist
581 superior alternatives, but some applications may still rely on
582 dnotify.
583
7e341fa1 584 If unsure, say Y.
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585
586config AUTOFS_FS
587 tristate "Kernel automounter support"
588 help
589 The automounter is a tool to automatically mount remote file systems
590 on demand. This implementation is partially kernel-based to reduce
591 overhead in the already-mounted case; this is unlike the BSD
592 automounter (amd), which is a pure user space daemon.
593
594 To use the automounter you need the user-space tools from the autofs
595 package; you can find the location in <file:Documentation/Changes>.
596 You also want to answer Y to "NFS file system support", below.
597
598 If you want to use the newer version of the automounter with more
599 features, say N here and say Y to "Kernel automounter v4 support",
600 below.
601
602 To compile this support as a module, choose M here: the module will be
603 called autofs.
604
605 If you are not a part of a fairly large, distributed network, you
606 probably do not need an automounter, and can say N here.
607
608config AUTOFS4_FS
609 tristate "Kernel automounter version 4 support (also supports v3)"
610 help
611 The automounter is a tool to automatically mount remote file systems
612 on demand. This implementation is partially kernel-based to reduce
613 overhead in the already-mounted case; this is unlike the BSD
614 automounter (amd), which is a pure user space daemon.
615
616 To use the automounter you need the user-space tools from
617 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
618 want to answer Y to "NFS file system support", below.
619
620 To compile this support as a module, choose M here: the module will be
621 called autofs4. You will need to add "alias autofs autofs4" to your
622 modules configuration file.
623
624 If you are not a part of a fairly large, distributed network or
625 don't have a laptop which needs to dynamically reconfigure to the
626 local network, you probably do not need an automounter, and can say
627 N here.
628
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629config FUSE_FS
630 tristate "Filesystem in Userspace support"
631 help
632 With FUSE it is possible to implement a fully functional filesystem
633 in a userspace program.
634
635 There's also companion library: libfuse. This library along with
636 utilities is available from the FUSE homepage:
637 <http://fuse.sourceforge.net/>
638
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639 See <file:Documentation/filesystems/fuse.txt> for more information.
640 See <file:Documentation/Changes> for needed library/utility version.
641
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642 If you want to develop a userspace FS, or if you want to use
643 a filesystem based on FUSE, answer Y or M.
644
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645config GENERIC_ACL
646 bool
647 select FS_POSIX_ACL
648
9361401e 649if BLOCK
1da177e4
LT
650menu "CD-ROM/DVD Filesystems"
651
652config ISO9660_FS
653 tristate "ISO 9660 CDROM file system support"
654 help
655 This is the standard file system used on CD-ROMs. It was previously
656 known as "High Sierra File System" and is called "hsfs" on other
657 Unix systems. The so-called Rock-Ridge extensions which allow for
658 long Unix filenames and symbolic links are also supported by this
659 driver. If you have a CD-ROM drive and want to do more with it than
660 just listen to audio CDs and watch its LEDs, say Y (and read
661 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
662 available from <http://www.tldp.org/docs.html#howto>), thereby
663 enlarging your kernel by about 27 KB; otherwise say N.
664
665 To compile this file system support as a module, choose M here: the
666 module will be called isofs.
667
668config JOLIET
669 bool "Microsoft Joliet CDROM extensions"
670 depends on ISO9660_FS
671 select NLS
672 help
673 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
674 which allows for long filenames in unicode format (unicode is the
675 new 16 bit character code, successor to ASCII, which encodes the
676 characters of almost all languages of the world; see
677 <http://www.unicode.org/> for more information). Say Y here if you
678 want to be able to read Joliet CD-ROMs under Linux.
679
680config ZISOFS
681 bool "Transparent decompression extension"
682 depends on ISO9660_FS
683 select ZLIB_INFLATE
684 help
685 This is a Linux-specific extension to RockRidge which lets you store
686 data in compressed form on a CD-ROM and have it transparently
687 decompressed when the CD-ROM is accessed. See
688 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
689 necessary to create such a filesystem. Say Y here if you want to be
690 able to read such compressed CD-ROMs.
691
1da177e4
LT
692config UDF_FS
693 tristate "UDF file system support"
694 help
695 This is the new file system used on some CD-ROMs and DVDs. Say Y if
696 you intend to mount DVD discs or CDRW's written in packet mode, or
697 if written to by other UDF utilities, such as DirectCD.
698 Please read <file:Documentation/filesystems/udf.txt>.
699
700 To compile this file system support as a module, choose M here: the
701 module will be called udf.
702
703 If unsure, say N.
704
705config UDF_NLS
706 bool
707 default y
708 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
709
710endmenu
9361401e 711endif
1da177e4 712
9361401e 713if BLOCK
1da177e4
LT
714menu "DOS/FAT/NT Filesystems"
715
716config FAT_FS
717 tristate
718 select NLS
719 help
720 If you want to use one of the FAT-based file systems (the MS-DOS and
721 VFAT (Windows 95) file systems), then you must say Y or M here
722 to include FAT support. You will then be able to mount partitions or
723 diskettes with FAT-based file systems and transparently access the
724 files on them, i.e. MSDOS files will look and behave just like all
725 other Unix files.
726
727 This FAT support is not a file system in itself, it only provides
728 the foundation for the other file systems. You will have to say Y or
729 M to at least one of "MSDOS fs support" or "VFAT fs support" in
730 order to make use of it.
731
732 Another way to read and write MSDOS floppies and hard drive
733 partitions from within Linux (but not transparently) is with the
734 mtools ("man mtools") program suite. You don't need to say Y here in
735 order to do that.
736
737 If you need to move large files on floppies between a DOS and a
738 Linux box, say Y here, mount the floppy under Linux with an MSDOS
739 file system and use GNU tar's M option. GNU tar is a program
740 available for Unix and DOS ("man tar" or "info tar").
741
1da177e4
LT
742 The FAT support will enlarge your kernel by about 37 KB. If unsure,
743 say Y.
744
745 To compile this as a module, choose M here: the module will be called
746 fat. Note that if you compile the FAT support as a module, you
747 cannot compile any of the FAT-based file systems into the kernel
748 -- they will have to be modules as well.
749
750config MSDOS_FS
751 tristate "MSDOS fs support"
752 select FAT_FS
753 help
754 This allows you to mount MSDOS partitions of your hard drive (unless
755 they are compressed; to access compressed MSDOS partitions under
756 Linux, you can either use the DOS emulator DOSEMU, described in the
757 DOSEMU-HOWTO, available from
758 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
759 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
760 intend to use dosemu with a non-compressed MSDOS partition, say Y
761 here) and MSDOS floppies. This means that file access becomes
762 transparent, i.e. the MSDOS files look and behave just like all
763 other Unix files.
764
765 If you have Windows 95 or Windows NT installed on your MSDOS
766 partitions, you should use the VFAT file system (say Y to "VFAT fs
767 support" below), or you will not be able to see the long filenames
768 generated by Windows 95 / Windows NT.
769
770 This option will enlarge your kernel by about 7 KB. If unsure,
771 answer Y. This will only work if you said Y to "DOS FAT fs support"
772 as well. To compile this as a module, choose M here: the module will
773 be called msdos.
774
775config VFAT_FS
776 tristate "VFAT (Windows-95) fs support"
777 select FAT_FS
778 help
779 This option provides support for normal Windows file systems with
780 long filenames. That includes non-compressed FAT-based file systems
781 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
782 programs from the mtools package.
783
784 The VFAT support enlarges your kernel by about 10 KB and it only
785 works if you said Y to the "DOS FAT fs support" above. Please read
786 the file <file:Documentation/filesystems/vfat.txt> for details. If
787 unsure, say Y.
788
789 To compile this as a module, choose M here: the module will be called
790 vfat.
791
792config FAT_DEFAULT_CODEPAGE
793 int "Default codepage for FAT"
794 depends on MSDOS_FS || VFAT_FS
795 default 437
796 help
797 This option should be set to the codepage of your FAT filesystems.
798 It can be overridden with the "codepage" mount option.
799 See <file:Documentation/filesystems/vfat.txt> for more information.
800
801config FAT_DEFAULT_IOCHARSET
802 string "Default iocharset for FAT"
803 depends on VFAT_FS
804 default "iso8859-1"
805 help
806 Set this to the default input/output character set you'd
807 like FAT to use. It should probably match the character set
808 that most of your FAT filesystems use, and can be overridden
809 with the "iocharset" mount option for FAT filesystems.
810 Note that "utf8" is not recommended for FAT filesystems.
811 If unsure, you shouldn't set "utf8" here.
812 See <file:Documentation/filesystems/vfat.txt> for more information.
813
814config NTFS_FS
815 tristate "NTFS file system support"
816 select NLS
817 help
818 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
819
820 Saying Y or M here enables read support. There is partial, but
821 safe, write support available. For write support you must also
822 say Y to "NTFS write support" below.
823
824 There are also a number of user-space tools available, called
825 ntfsprogs. These include ntfsundelete and ntfsresize, that work
826 without NTFS support enabled in the kernel.
827
828 This is a rewrite from scratch of Linux NTFS support and replaced
829 the old NTFS code starting with Linux 2.5.11. A backport to
830 the Linux 2.4 kernel series is separately available as a patch
831 from the project web site.
832
833 For more information see <file:Documentation/filesystems/ntfs.txt>
834 and <http://linux-ntfs.sourceforge.net/>.
835
836 To compile this file system support as a module, choose M here: the
837 module will be called ntfs.
838
839 If you are not using Windows NT, 2000, XP or 2003 in addition to
840 Linux on your computer it is safe to say N.
841
842config NTFS_DEBUG
843 bool "NTFS debugging support"
844 depends on NTFS_FS
845 help
846 If you are experiencing any problems with the NTFS file system, say
847 Y here. This will result in additional consistency checks to be
848 performed by the driver as well as additional debugging messages to
849 be written to the system log. Note that debugging messages are
850 disabled by default. To enable them, supply the option debug_msgs=1
851 at the kernel command line when booting the kernel or as an option
852 to insmod when loading the ntfs module. Once the driver is active,
853 you can enable debugging messages by doing (as root):
854 echo 1 > /proc/sys/fs/ntfs-debug
855 Replacing the "1" with "0" would disable debug messages.
856
857 If you leave debugging messages disabled, this results in little
858 overhead, but enabling debug messages results in very significant
859 slowdown of the system.
860
861 When reporting bugs, please try to have available a full dump of
862 debugging messages while the misbehaviour was occurring.
863
864config NTFS_RW
865 bool "NTFS write support"
866 depends on NTFS_FS
867 help
868 This enables the partial, but safe, write support in the NTFS driver.
869
870 The only supported operation is overwriting existing files, without
871 changing the file length. No file or directory creation, deletion or
872 renaming is possible. Note only non-resident files can be written to
873 so you may find that some very small files (<500 bytes or so) cannot
874 be written to.
875
876 While we cannot guarantee that it will not damage any data, we have
877 so far not received a single report where the driver would have
878 damaged someones data so we assume it is perfectly safe to use.
879
880 Note: While write support is safe in this version (a rewrite from
881 scratch of the NTFS support), it should be noted that the old NTFS
882 write support, included in Linux 2.5.10 and before (since 1997),
883 is not safe.
884
885 This is currently useful with TopologiLinux. TopologiLinux is run
886 on top of any DOS/Microsoft Windows system without partitioning your
887 hard disk. Unlike other Linux distributions TopologiLinux does not
888 need its own partition. For more information see
889 <http://topologi-linux.sourceforge.net/>
890
891 It is perfectly safe to say N here.
892
893endmenu
9361401e 894endif
1da177e4
LT
895
896menu "Pseudo filesystems"
897
898config PROC_FS
69755652
PA
899 bool "/proc file system support" if EMBEDDED
900 default y
1da177e4
LT
901 help
902 This is a virtual file system providing information about the status
903 of the system. "Virtual" means that it doesn't take up any space on
904 your hard disk: the files are created on the fly by the kernel when
905 you try to access them. Also, you cannot read the files with older
906 version of the program less: you need to use more or cat.
907
908 It's totally cool; for example, "cat /proc/interrupts" gives
909 information about what the different IRQs are used for at the moment
910 (there is a small number of Interrupt ReQuest lines in your computer
911 that are used by the attached devices to gain the CPU's attention --
912 often a source of trouble if two devices are mistakenly configured
913 to use the same IRQ). The program procinfo to display some
914 information about your system gathered from the /proc file system.
915
916 Before you can use the /proc file system, it has to be mounted,
917 meaning it has to be given a location in the directory hierarchy.
918 That location should be /proc. A command such as "mount -t proc proc
919 /proc" or the equivalent line in /etc/fstab does the job.
920
921 The /proc file system is explained in the file
922 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
923 ("man 5 proc").
924
925 This option will enlarge your kernel by about 67 KB. Several
926 programs depend on this, so everyone should say Y here.
927
928config PROC_KCORE
929 bool "/proc/kcore support" if !ARM
930 depends on PROC_FS && MMU
931
666bfddb
VG
932config PROC_VMCORE
933 bool "/proc/vmcore support (EXPERIMENTAL)"
05970d47 934 depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
68250ba5 935 default y
666bfddb
VG
936 help
937 Exports the dump image of crashed kernel in ELF format.
938
b89a8171
EB
939config PROC_SYSCTL
940 bool "Sysctl support (/proc/sys)" if EMBEDDED
941 depends on PROC_FS
942 select SYSCTL
943 default y
944 ---help---
945 The sysctl interface provides a means of dynamically changing
946 certain kernel parameters and variables on the fly without requiring
947 a recompile of the kernel or reboot of the system. The primary
948 interface is through /proc/sys. If you say Y here a tree of
949 modifiable sysctl entries will be generated beneath the
950 /proc/sys directory. They are explained in the files
951 in <file:Documentation/sysctl/>. Note that enabling this
952 option will enlarge the kernel by at least 8 KB.
953
954 As it is generally a good thing, you should say Y here unless
955 building a kernel for install/rescue disks or your system is very
956 limited in memory.
957
1da177e4
LT
958config SYSFS
959 bool "sysfs file system support" if EMBEDDED
960 default y
961 help
962 The sysfs filesystem is a virtual filesystem that the kernel uses to
963 export internal kernel objects, their attributes, and their
964 relationships to one another.
965
966 Users can use sysfs to ascertain useful information about the running
967 kernel, such as the devices the kernel has discovered on each bus and
968 which driver each is bound to. sysfs can also be used to tune devices
969 and other kernel subsystems.
970
971 Some system agents rely on the information in sysfs to operate.
972 /sbin/hotplug uses device and object attributes in sysfs to assist in
03a67a46 973 delegating policy decisions, like persistently naming devices.
1da177e4
LT
974
975 sysfs is currently used by the block subsystem to mount the root
976 partition. If sysfs is disabled you must specify the boot device on
977 the kernel boot command line via its major and minor numbers. For
978 example, "root=03:01" for /dev/hda1.
979
980 Designers of embedded systems may wish to say N here to conserve space.
981
1da177e4
LT
982config TMPFS
983 bool "Virtual memory file system support (former shm fs)"
984 help
985 Tmpfs is a file system which keeps all files in virtual memory.
986
987 Everything in tmpfs is temporary in the sense that no files will be
988 created on your hard drive. The files live in memory and swap
989 space. If you unmount a tmpfs instance, everything stored therein is
990 lost.
991
992 See <file:Documentation/filesystems/tmpfs.txt> for details.
993
39f0247d
AG
994config TMPFS_POSIX_ACL
995 bool "Tmpfs POSIX Access Control Lists"
996 depends on TMPFS
997 select GENERIC_ACL
998 help
999 POSIX Access Control Lists (ACLs) support permissions for users and
1000 groups beyond the owner/group/world scheme.
1001
1002 To learn more about Access Control Lists, visit the POSIX ACLs for
1003 Linux website <http://acl.bestbits.at/>.
1004
1005 If you don't know what Access Control Lists are, say N.
1006
1da177e4
LT
1007config HUGETLBFS
1008 bool "HugeTLB file system support"
dd950587 1009 depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
dda27d1a
AO
1010 help
1011 hugetlbfs is a filesystem backing for HugeTLB pages, based on
1012 ramfs. For architectures that support it, say Y here and read
1013 <file:Documentation/vm/hugetlbpage.txt> for details.
1014
1015 If unsure, say N.
1da177e4
LT
1016
1017config HUGETLB_PAGE
1018 def_bool HUGETLBFS
1019
7063fbf2
JB
1020config CONFIGFS_FS
1021 tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)"
65714b91 1022 depends on SYSFS && EXPERIMENTAL
7063fbf2
JB
1023 help
1024 configfs is a ram-based filesystem that provides the converse
1025 of sysfs's functionality. Where sysfs is a filesystem-based
1026 view of kernel objects, configfs is a filesystem-based manager
1027 of kernel objects, or config_items.
1028
1029 Both sysfs and configfs can and should exist together on the
1030 same system. One is not a replacement for the other.
1031
1da177e4
LT
1032endmenu
1033
1034menu "Miscellaneous filesystems"
1035
1036config ADFS_FS
1037 tristate "ADFS file system support (EXPERIMENTAL)"
9361401e 1038 depends on BLOCK && EXPERIMENTAL
1da177e4
LT
1039 help
1040 The Acorn Disc Filing System is the standard file system of the
1041 RiscOS operating system which runs on Acorn's ARM-based Risc PC
1042 systems and the Acorn Archimedes range of machines. If you say Y
1043 here, Linux will be able to read from ADFS partitions on hard drives
1044 and from ADFS-formatted floppy discs. If you also want to be able to
1045 write to those devices, say Y to "ADFS write support" below.
1046
1047 The ADFS partition should be the first partition (i.e.,
1048 /dev/[hs]d?1) on each of your drives. Please read the file
1049 <file:Documentation/filesystems/adfs.txt> for further details.
1050
1051 To compile this code as a module, choose M here: the module will be
1052 called adfs.
1053
1054 If unsure, say N.
1055
1056config ADFS_FS_RW
1057 bool "ADFS write support (DANGEROUS)"
1058 depends on ADFS_FS
1059 help
1060 If you say Y here, you will be able to write to ADFS partitions on
1061 hard drives and ADFS-formatted floppy disks. This is experimental
1062 codes, so if you're unsure, say N.
1063
1064config AFFS_FS
1065 tristate "Amiga FFS file system support (EXPERIMENTAL)"
9361401e 1066 depends on BLOCK && EXPERIMENTAL
1da177e4
LT
1067 help
1068 The Fast File System (FFS) is the common file system used on hard
1069 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
1070 if you want to be able to read and write files from and to an Amiga
1071 FFS partition on your hard drive. Amiga floppies however cannot be
1072 read with this driver due to an incompatibility of the floppy
1073 controller used in an Amiga and the standard floppy controller in
1074 PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1075 and <file:fs/affs/Changes>.
1076
1077 With this driver you can also mount disk files used by Bernd
1078 Schmidt's Un*X Amiga Emulator
1079 (<http://www.freiburg.linux.de/~uae/>).
1080 If you want to do this, you will also need to say Y or M to "Loop
1081 device support", above.
1082
1083 To compile this file system support as a module, choose M here: the
1084 module will be called affs. If unsure, say N.
1085
237fead6
MH
1086config ECRYPT_FS
1087 tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
88b4a07e 1088 depends on EXPERIMENTAL && KEYS && CRYPTO && NET
237fead6
MH
1089 help
1090 Encrypted filesystem that operates on the VFS layer. See
1091 <file:Documentation/ecryptfs.txt> to learn more about
1092 eCryptfs. Userspace components are required and can be
1093 obtained from <http://ecryptfs.sf.net>.
1094
1095 To compile this file system support as a module, choose M here: the
1096 module will be called ecryptfs.
1097
1da177e4
LT
1098config HFS_FS
1099 tristate "Apple Macintosh file system support (EXPERIMENTAL)"
9361401e 1100 depends on BLOCK && EXPERIMENTAL
878129a3 1101 select NLS
1da177e4
LT
1102 help
1103 If you say Y here, you will be able to mount Macintosh-formatted
1104 floppy disks and hard drive partitions with full read-write access.
1105 Please read <file:fs/hfs/HFS.txt> to learn about the available mount
1106 options.
1107
1108 To compile this file system support as a module, choose M here: the
1109 module will be called hfs.
1110
1111config HFSPLUS_FS
1112 tristate "Apple Extended HFS file system support"
9361401e 1113 depends on BLOCK
1da177e4
LT
1114 select NLS
1115 select NLS_UTF8
1116 help
1117 If you say Y here, you will be able to mount extended format
1118 Macintosh-formatted hard drive partitions with full read-write access.
1119
1120 This file system is often called HFS+ and was introduced with
1121 MacOS 8. It includes all Mac specific filesystem data such as
1122 data forks and creator codes, but it also has several UNIX
1123 style features such as file ownership and permissions.
1124
1125config BEFS_FS
1126 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
9361401e 1127 depends on BLOCK && EXPERIMENTAL
1da177e4
LT
1128 select NLS
1129 help
1130 The BeOS File System (BeFS) is the native file system of Be, Inc's
1131 BeOS. Notable features include support for arbitrary attributes
3cb2fccc 1132 on files and directories, and database-like indices on selected
1da177e4
LT
1133 attributes. (Also note that this driver doesn't make those features
1134 available at this time). It is a 64 bit filesystem, so it supports
44c09201 1135 extremely large volumes and files.
1da177e4
LT
1136
1137 If you use this filesystem, you should also say Y to at least one
1138 of the NLS (native language support) options below.
1139
1140 If you don't know what this is about, say N.
1141
1142 To compile this as a module, choose M here: the module will be
1143 called befs.
1144
1145config BEFS_DEBUG
1146 bool "Debug BeFS"
1147 depends on BEFS_FS
1148 help
1149 If you say Y here, you can use the 'debug' mount option to enable
1150 debugging output from the driver.
1151
1152config BFS_FS
1153 tristate "BFS file system support (EXPERIMENTAL)"
9361401e 1154 depends on BLOCK && EXPERIMENTAL
1da177e4
LT
1155 help
1156 Boot File System (BFS) is a file system used under SCO UnixWare to
1157 allow the bootloader access to the kernel image and other important
1158 files during the boot process. It is usually mounted under /stand
1159 and corresponds to the slice marked as "STAND" in the UnixWare
1160 partition. You should say Y if you want to read or write the files
1161 on your /stand slice from within Linux. You then also need to say Y
1162 to "UnixWare slices support", below. More information about the BFS
1163 file system is contained in the file
1164 <file:Documentation/filesystems/bfs.txt>.
1165
1166 If you don't know what this is about, say N.
1167
1168 To compile this as a module, choose M here: the module will be called
1169 bfs. Note that the file system of your root partition (the one
1170 containing the directory /) cannot be compiled as a module.
1171
1172
1173
1174config EFS_FS
1175 tristate "EFS file system support (read only) (EXPERIMENTAL)"
9361401e 1176 depends on BLOCK && EXPERIMENTAL
1da177e4
LT
1177 help
1178 EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1179 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1180 uses the XFS file system for hard disk partitions however).
1181
1182 This implementation only offers read-only access. If you don't know
1183 what all this is about, it's safe to say N. For more information
1184 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1185
1186 To compile the EFS file system support as a module, choose M here: the
1187 module will be called efs.
1188
1da177e4
LT
1189config JFFS2_FS
1190 tristate "Journalling Flash File System v2 (JFFS2) support"
1191 select CRC32
1192 depends on MTD
1193 help
1194 JFFS2 is the second generation of the Journalling Flash File System
1195 for use on diskless embedded devices. It provides improved wear
1196 levelling, compression and support for hard links. You cannot use
1197 this on normal block devices, only on 'MTD' devices.
1198
1199 Further information on the design and implementation of JFFS2 is
1200 available at <http://sources.redhat.com/jffs2/>.
1201
1202config JFFS2_FS_DEBUG
1203 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1204 depends on JFFS2_FS
1205 default "0"
1206 help
1207 This controls the amount of debugging messages produced by the JFFS2
1208 code. Set it to zero for use in production systems. For evaluation,
1209 testing and debugging, it's advisable to set it to one. This will
1210 enable a few assertions and will print debugging messages at the
1211 KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1212 is unlikely to be useful - it enables extra debugging in certain
1213 areas which at one point needed debugging, but when the bugs were
1214 located and fixed, the detailed messages were relegated to level 2.
1215
1216 If reporting bugs, please try to have available a full dump of the
1217 messages at debug level 1 while the misbehaviour was occurring.
1218
2ba72cb7
DW
1219config JFFS2_FS_WRITEBUFFER
1220 bool "JFFS2 write-buffering support"
aa98d7cf 1221 depends on JFFS2_FS
2ba72cb7
DW
1222 default y
1223 help
1224 This enables the write-buffering support in JFFS2.
1225
1226 This functionality is required to support JFFS2 on the following
1227 types of flash devices:
1228 - NAND flash
1229 - NOR flash with transparent ECC
1230 - DataFlash
1231
a6bc432e
DW
1232config JFFS2_FS_WBUF_VERIFY
1233 bool "Verify JFFS2 write-buffer reads"
1234 depends on JFFS2_FS_WRITEBUFFER
1235 default n
1236 help
1237 This causes JFFS2 to read back every page written through the
1238 write-buffer, and check for errors.
1239
2ba72cb7
DW
1240config JFFS2_SUMMARY
1241 bool "JFFS2 summary support (EXPERIMENTAL)"
1242 depends on JFFS2_FS && EXPERIMENTAL
1243 default n
1244 help
1245 This feature makes it possible to use summary information
1246 for faster filesystem mount.
1247
1248 The summary information can be inserted into a filesystem image
1249 by the utility 'sumtool'.
1250
1251 If unsure, say 'N'.
1252
1253config JFFS2_FS_XATTR
1254 bool "JFFS2 XATTR support (EXPERIMENTAL)"
04510dee 1255 depends on JFFS2_FS && EXPERIMENTAL
aa98d7cf
KK
1256 default n
1257 help
1258 Extended attributes are name:value pairs associated with inodes by
1259 the kernel or by users (see the attr(5) manual page, or visit
1260 <http://acl.bestbits.at/> for details).
1261
1262 If unsure, say N.
1263
1264config JFFS2_FS_POSIX_ACL
1265 bool "JFFS2 POSIX Access Control Lists"
1266 depends on JFFS2_FS_XATTR
1267 default y
1268 select FS_POSIX_ACL
1269 help
1270 Posix Access Control Lists (ACLs) support permissions for users and
1271 groups beyond the owner/group/world scheme.
1272
1273 To learn more about Access Control Lists, visit the Posix ACLs for
1274 Linux website <http://acl.bestbits.at/>.
1275
1276 If you don't know what Access Control Lists are, say N
1277
1278config JFFS2_FS_SECURITY
1279 bool "JFFS2 Security Labels"
1280 depends on JFFS2_FS_XATTR
1281 default y
1282 help
1283 Security labels support alternative access control models
1284 implemented by security modules like SELinux. This option
1285 enables an extended attribute handler for file security
1286 labels in the jffs2 filesystem.
1287
1288 If you are not using a security module that requires using
1289 extended attributes for file security labels, say N.
1290
1da177e4
LT
1291config JFFS2_COMPRESSION_OPTIONS
1292 bool "Advanced compression options for JFFS2"
1293 depends on JFFS2_FS
1294 default n
1295 help
1296 Enabling this option allows you to explicitly choose which
1297 compression modules, if any, are enabled in JFFS2. Removing
1298 compressors and mean you cannot read existing file systems,
1299 and enabling experimental compressors can mean that you
1300 write a file system which cannot be read by a standard kernel.
1301
1302 If unsure, you should _definitely_ say 'N'.
1303
1304config JFFS2_ZLIB
1305 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1306 select ZLIB_INFLATE
1307 select ZLIB_DEFLATE
1308 depends on JFFS2_FS
1309 default y
ef53cb02
DW
1310 help
1311 Zlib is designed to be a free, general-purpose, legally unencumbered,
1312 lossless data-compression library for use on virtually any computer
1313 hardware and operating system. See <http://www.gzip.org/zlib/> for
1314 further information.
182ec4ee 1315
ef53cb02 1316 Say 'Y' if unsure.
1da177e4 1317
c799aca3
RP
1318config JFFS2_LZO
1319 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1320 select LZO_COMPRESS
1321 select LZO_DECOMPRESS
1322 depends on JFFS2_FS
3ca135e1 1323 default n
c799aca3
RP
1324 help
1325 minilzo-based compression. Generally works better than Zlib.
1326
3ca135e1
DW
1327 This feature was added in July, 2007. Say 'N' if you need
1328 compatibility with older bootloaders or kernels.
c799aca3 1329
1da177e4
LT
1330config JFFS2_RTIME
1331 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1332 depends on JFFS2_FS
1333 default y
ef53cb02
DW
1334 help
1335 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1da177e4
LT
1336
1337config JFFS2_RUBIN
1338 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1339 depends on JFFS2_FS
1340 default n
ef53cb02
DW
1341 help
1342 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1da177e4
LT
1343
1344choice
ef53cb02
DW
1345 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1346 default JFFS2_CMODE_PRIORITY
1347 depends on JFFS2_FS
1348 help
1349 You can set here the default compression mode of JFFS2 from
1350 the available compression modes. Don't touch if unsure.
1da177e4
LT
1351
1352config JFFS2_CMODE_NONE
ef53cb02
DW
1353 bool "no compression"
1354 help
1355 Uses no compression.
1da177e4
LT
1356
1357config JFFS2_CMODE_PRIORITY
ef53cb02
DW
1358 bool "priority"
1359 help
1360 Tries the compressors in a predefined order and chooses the first
1361 successful one.
1da177e4
LT
1362
1363config JFFS2_CMODE_SIZE
ef53cb02
DW
1364 bool "size (EXPERIMENTAL)"
1365 help
1366 Tries all compressors and chooses the one which has the smallest
1367 result.
1da177e4 1368
3b23c1f5
RP
1369config JFFS2_CMODE_FAVOURLZO
1370 bool "Favour LZO"
1371 help
1372 Tries all compressors and chooses the one which has the smallest
1373 result but gives some preference to LZO (which has faster
1374 decompression) at the expense of size.
1375
1da177e4
LT
1376endchoice
1377
1378config CRAMFS
1379 tristate "Compressed ROM file system support (cramfs)"
9361401e 1380 depends on BLOCK
1da177e4
LT
1381 select ZLIB_INFLATE
1382 help
1383 Saying Y here includes support for CramFs (Compressed ROM File
1384 System). CramFs is designed to be a simple, small, and compressed
1385 file system for ROM based embedded systems. CramFs is read-only,
1386 limited to 256MB file systems (with 16MB files), and doesn't support
1387 16/32 bits uid/gid, hard links and timestamps.
1388
1389 See <file:Documentation/filesystems/cramfs.txt> and
1390 <file:fs/cramfs/README> for further information.
1391
1392 To compile this as a module, choose M here: the module will be called
1393 cramfs. Note that the root file system (the one containing the
1394 directory /) cannot be compiled as a module.
1395
1396 If unsure, say N.
1397
1398config VXFS_FS
1399 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
9361401e 1400 depends on BLOCK
1da177e4
LT
1401 help
1402 FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1403 file system format. VERITAS VxFS(TM) is the standard file system
1404 of SCO UnixWare (and possibly others) and optionally available
1405 for Sunsoft Solaris, HP-UX and many other operating systems.
1406 Currently only readonly access is supported.
1407
1408 NOTE: the file system type as used by mount(1), mount(2) and
1409 fstab(5) is 'vxfs' as it describes the file system format, not
1410 the actual driver.
1411
1412 To compile this as a module, choose M here: the module will be
1413 called freevxfs. If unsure, say N.
1414
1415
1416config HPFS_FS
1417 tristate "OS/2 HPFS file system support"
9361401e 1418 depends on BLOCK
1da177e4
LT
1419 help
1420 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1421 is the file system used for organizing files on OS/2 hard disk
1422 partitions. Say Y if you want to be able to read files from and
1423 write files to an OS/2 HPFS partition on your hard drive. OS/2
1424 floppies however are in regular MSDOS format, so you don't need this
1425 option in order to be able to read them. Read
1426 <file:Documentation/filesystems/hpfs.txt>.
1427
1428 To compile this file system support as a module, choose M here: the
1429 module will be called hpfs. If unsure, say N.
1430
1431
1432
1433config QNX4FS_FS
1434 tristate "QNX4 file system support (read only)"
9361401e 1435 depends on BLOCK
1da177e4
LT
1436 help
1437 This is the file system used by the real-time operating systems
1438 QNX 4 and QNX 6 (the latter is also called QNX RTP).
1439 Further information is available at <http://www.qnx.com/>.
1440 Say Y if you intend to mount QNX hard disks or floppies.
1441 Unless you say Y to "QNX4FS read-write support" below, you will
1442 only be able to read these file systems.
1443
1444 To compile this file system support as a module, choose M here: the
1445 module will be called qnx4.
1446
1447 If you don't know whether you need it, then you don't need it:
1448 answer N.
1449
1450config QNX4FS_RW
1451 bool "QNX4FS write support (DANGEROUS)"
1452 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1453 help
1454 Say Y if you want to test write support for QNX4 file systems.
1455
1456 It's currently broken, so for now:
1457 answer N.
1458
1459
1460
1461config SYSV_FS
1462 tristate "System V/Xenix/V7/Coherent file system support"
9361401e 1463 depends on BLOCK
1da177e4
LT
1464 help
1465 SCO, Xenix and Coherent are commercial Unix systems for Intel
1466 machines, and Version 7 was used on the DEC PDP-11. Saying Y
1467 here would allow you to read from their floppies and hard disk
1468 partitions.
1469
1470 If you have floppies or hard disk partitions like that, it is likely
1471 that they contain binaries from those other Unix systems; in order
cab00891 1472 to run these binaries, you will want to install linux-abi which is
1da177e4
LT
1473 a set of kernel modules that lets you run SCO, Xenix, Wyse,
1474 UnixWare, Dell Unix and System V programs under Linux. It is
1475 available via FTP (user: ftp) from
1476 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1477 NOTE: that will work only for binaries from Intel-based systems;
1478 PDP ones will have to wait until somebody ports Linux to -11 ;-)
1479
1480 If you only intend to mount files from some other Unix over the
1481 network using NFS, you don't need the System V file system support
1482 (but you need NFS file system support obviously).
1483
1484 Note that this option is generally not needed for floppies, since a
1485 good portable way to transport files and directories between unixes
1486 (and even other operating systems) is given by the tar program ("man
1487 tar" or preferably "info tar"). Note also that this option has
1488 nothing whatsoever to do with the option "System V IPC". Read about
1489 the System V file system in
1490 <file:Documentation/filesystems/sysv-fs.txt>.
1491 Saying Y here will enlarge your kernel by about 27 KB.
1492
1493 To compile this as a module, choose M here: the module will be called
1494 sysv.
1495
1496 If you haven't heard about all of this before, it's safe to say N.
1497
1498
1499
1500config UFS_FS
1501 tristate "UFS file system support (read only)"
9361401e 1502 depends on BLOCK
1da177e4
LT
1503 help
1504 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1505 OpenBSD and NeXTstep) use a file system called UFS. Some System V
1506 Unixes can create and mount hard disk partitions and diskettes using
1507 this file system as well. Saying Y here will allow you to read from
1508 these partitions; if you also want to write to them, say Y to the
1509 experimental "UFS file system write support", below. Please read the
1510 file <file:Documentation/filesystems/ufs.txt> for more information.
1511
1512 The recently released UFS2 variant (used in FreeBSD 5.x) is
1513 READ-ONLY supported.
1514
1515 If you only intend to mount files from some other Unix over the
1516 network using NFS, you don't need the UFS file system support (but
1517 you need NFS file system support obviously).
1518
1519 Note that this option is generally not needed for floppies, since a
1520 good portable way to transport files and directories between unixes
1521 (and even other operating systems) is given by the tar program ("man
1522 tar" or preferably "info tar").
1523
1524 When accessing NeXTstep files, you may need to convert them from the
1525 NeXT character set to the Latin1 character set; use the program
1526 recode ("info recode") for this purpose.
1527
1528 To compile the UFS file system support as a module, choose M here: the
1529 module will be called ufs.
1530
1531 If you haven't heard about all of this before, it's safe to say N.
1532
1533config UFS_FS_WRITE
1534 bool "UFS file system write support (DANGEROUS)"
5afb3145 1535 depends on UFS_FS && EXPERIMENTAL
1da177e4
LT
1536 help
1537 Say Y here if you want to try writing to UFS partitions. This is
1538 experimental, so you should back up your UFS partitions beforehand.
1539
abf5d15f
ED
1540config UFS_DEBUG
1541 bool "UFS debugging"
1542 depends on UFS_FS
1543 help
1544 If you are experiencing any problems with the UFS filesystem, say
1545 Y here. This will result in _many_ additional debugging messages to be
1546 written to the system log.
1547
1da177e4
LT
1548endmenu
1549
1550menu "Network File Systems"
1551 depends on NET
1552
1553config NFS_FS
1554 tristate "NFS file system support"
1555 depends on INET
1556 select LOCKD
1557 select SUNRPC
b7fa0554 1558 select NFS_ACL_SUPPORT if NFS_V3_ACL
1da177e4
LT
1559 help
1560 If you are connected to some other (usually local) Unix computer
1561 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1562 on that computer (the NFS server) using the Network File Sharing
1563 protocol, say Y. "Mounting files" means that the client can access
1564 the files with usual UNIX commands as if they were sitting on the
1565 client's hard disk. For this to work, the server must run the
1566 programs nfsd and mountd (but does not need to have NFS file system
1567 support enabled in its kernel). NFS is explained in the Network
1568 Administrator's Guide, available from
1569 <http://www.tldp.org/docs.html#guide>, on its man page: "man
1570 nfs", and in the NFS-HOWTO.
1571
1572 A superior but less widely used alternative to NFS is provided by
1573 the Coda file system; see "Coda file system support" below.
1574
1575 If you say Y here, you should have said Y to TCP/IP networking also.
1576 This option would enlarge your kernel by about 27 KB.
1577
1578 To compile this file system support as a module, choose M here: the
1579 module will be called nfs.
1580
1581 If you are configuring a diskless machine which will mount its root
1582 file system over NFS at boot time, say Y here and to "Kernel
1583 level IP autoconfiguration" above and to "Root file system on NFS"
1584 below. You cannot compile this driver as a module in this case.
1585 There are two packages designed for booting diskless machines over
1586 the net: netboot, available from
1587 <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1588 available from <http://ftp1.sourceforge.net/etherboot/>.
1589
1590 If you don't know what all this is about, say N.
1591
1592config NFS_V3
1593 bool "Provide NFSv3 client support"
1594 depends on NFS_FS
1595 help
1596 Say Y here if you want your NFS client to be able to speak version
1597 3 of the NFS protocol.
1598
1599 If unsure, say Y.
1600
b7fa0554
AG
1601config NFS_V3_ACL
1602 bool "Provide client support for the NFSv3 ACL protocol extension"
1603 depends on NFS_V3
1604 help
1605 Implement the NFSv3 ACL protocol extension for manipulating POSIX
1606 Access Control Lists. The server should also be compiled with
1607 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1608
1609 If unsure, say N.
1610
1da177e4
LT
1611config NFS_V4
1612 bool "Provide NFSv4 client support (EXPERIMENTAL)"
1613 depends on NFS_FS && EXPERIMENTAL
1614 select RPCSEC_GSS_KRB5
1615 help
1616 Say Y here if you want your NFS client to be able to speak the newer
1617 version 4 of the NFS protocol.
1618
1619 Note: Requires auxiliary userspace daemons which may be found on
1620 http://www.citi.umich.edu/projects/nfsv4/
1621
1622 If unsure, say N.
1623
1624config NFS_DIRECTIO
026ed5c9
CL
1625 bool "Allow direct I/O on NFS files"
1626 depends on NFS_FS
1da177e4
LT
1627 help
1628 This option enables applications to perform uncached I/O on files
1629 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
1630 is set for a file, its data is not cached in the system's page
1631 cache. Data is moved to and from user-level application buffers
1632 directly. Unlike local disk-based file systems, NFS O_DIRECT has
1633 no alignment restrictions.
1634
1635 Unless your program is designed to use O_DIRECT properly, you are
1636 much better off allowing the NFS client to manage data caching for
1637 you. Misusing O_DIRECT can cause poor server performance or network
1638 storms. This kernel build option defaults OFF to avoid exposing
1639 system administrators unwittingly to a potentially hazardous
1640 feature.
1641
1642 For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1643
1644 If unsure, say N. This reduces the size of the NFS client, and
1645 causes open() to return EINVAL if a file residing in NFS is
1646 opened with the O_DIRECT flag.
1647
1648config NFSD
1649 tristate "NFS server support"
1650 depends on INET
1651 select LOCKD
1652 select SUNRPC
1653 select EXPORTFS
f05e15b5
HX
1654 select NFSD_V2_ACL if NFSD_V3_ACL
1655 select NFS_ACL_SUPPORT if NFSD_V2_ACL
1656 select NFSD_TCP if NFSD_V4
1657 select CRYPTO_MD5 if NFSD_V4
1658 select CRYPTO if NFSD_V4
1659 select FS_POSIX_ACL if NFSD_V4
1da177e4
LT
1660 help
1661 If you want your Linux box to act as an NFS *server*, so that other
1662 computers on your local network which support NFS can access certain
1663 directories on your box transparently, you have two options: you can
1664 use the self-contained user space program nfsd, in which case you
1665 should say N here, or you can say Y and use the kernel based NFS
1666 server. The advantage of the kernel based solution is that it is
1667 faster.
1668
1669 In either case, you will need support software; the respective
1670 locations are given in the file <file:Documentation/Changes> in the
1671 NFS section.
1672
1673 If you say Y here, you will get support for version 2 of the NFS
1674 protocol (NFSv2). If you also want NFSv3, say Y to the next question
1675 as well.
1676
1677 Please read the NFS-HOWTO, available from
1678 <http://www.tldp.org/docs.html#howto>.
1679
1680 To compile the NFS server support as a module, choose M here: the
1681 module will be called nfsd. If unsure, say N.
1682
a257cdd0
AG
1683config NFSD_V2_ACL
1684 bool
1685 depends on NFSD
1686
1da177e4
LT
1687config NFSD_V3
1688 bool "Provide NFSv3 server support"
1689 depends on NFSD
1690 help
1691 If you would like to include the NFSv3 server as well as the NFSv2
1692 server, say Y here. If unsure, say Y.
1693
a257cdd0
AG
1694config NFSD_V3_ACL
1695 bool "Provide server support for the NFSv3 ACL protocol extension"
1696 depends on NFSD_V3
a257cdd0
AG
1697 help
1698 Implement the NFSv3 ACL protocol extension for manipulating POSIX
1699 Access Control Lists on exported file systems. NFS clients should
1700 be compiled with the NFSv3 ACL protocol extension; see the
1701 CONFIG_NFS_V3_ACL option. If unsure, say N.
1702
1da177e4
LT
1703config NFSD_V4
1704 bool "Provide NFSv4 server support (EXPERIMENTAL)"
8cd69e1b 1705 depends on NFSD && NFSD_V3 && EXPERIMENTAL
42ed95c4 1706 select RPCSEC_GSS_KRB5
1da177e4
LT
1707 help
1708 If you would like to include the NFSv4 server as well as the NFSv2
1709 and NFSv3 servers, say Y here. This feature is experimental, and
1710 should only be used if you are interested in helping to test NFSv4.
1711 If unsure, say N.
1712
1713config NFSD_TCP
1714 bool "Provide NFS server over TCP support"
1715 depends on NFSD
1716 default y
1717 help
1718 If you want your NFS server to support TCP connections, say Y here.
1719 TCP connections usually perform better than the default UDP when
1720 the network is lossy or congested. If unsure, say Y.
1721
1722config ROOT_NFS
1723 bool "Root file system on NFS"
1724 depends on NFS_FS=y && IP_PNP
1725 help
1726 If you want your Linux box to mount its whole root file system (the
1727 one containing the directory /) from some other computer over the
1728 net via NFS (presumably because your box doesn't have a hard disk),
1729 say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1730 likely that in this case, you also want to say Y to "Kernel level IP
1731 autoconfiguration" so that your box can discover its network address
1732 at boot time.
1733
1734 Most people say N here.
1735
1736config LOCKD
1737 tristate
1738
1739config LOCKD_V4
1740 bool
1741 depends on NFSD_V3 || NFS_V3
1742 default y
1743
1744config EXPORTFS
1745 tristate
1746
a257cdd0
AG
1747config NFS_ACL_SUPPORT
1748 tristate
1749 select FS_POSIX_ACL
1750
1751config NFS_COMMON
1752 bool
1753 depends on NFSD || NFS_FS
1754 default y
1755
1da177e4
LT
1756config SUNRPC
1757 tristate
1758
1759config SUNRPC_GSS
1760 tristate
1761
c3a57ed7
TT
1762config SUNRPC_XPRT_RDMA
1763 tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
113632d0 1764 depends on SUNRPC && INFINIBAND && EXPERIMENTAL
c3a57ed7
TT
1765 default m
1766 help
1767 Adds a client RPC transport for supporting kernel NFS over RDMA
1768 mounts, including Infiniband and iWARP. Experimental.
1769
00a6e7bb
CL
1770config SUNRPC_BIND34
1771 bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
1772 depends on SUNRPC && EXPERIMENTAL
1773 help
1774 Provides kernel support for querying rpcbind servers via versions 3
1775 and 4 of the rpcbind protocol. The kernel automatically falls back
1776 to version 2 if a remote rpcbind service does not support versions
1777 3 or 4.
1778
1779 If unsure, say N to get traditional behavior (version 2 rpcbind
1780 requests only).
1781
1da177e4
LT
1782config RPCSEC_GSS_KRB5
1783 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1784 depends on SUNRPC && EXPERIMENTAL
1785 select SUNRPC_GSS
1786 select CRYPTO
1787 select CRYPTO_MD5
1788 select CRYPTO_DES
bcbaecbb 1789 select CRYPTO_CBC
1da177e4
LT
1790 help
1791 Provides for secure RPC calls by means of a gss-api
1792 mechanism based on Kerberos V5. This is required for
1793 NFSv4.
1794
1795 Note: Requires an auxiliary userspace daemon which may be found on
1796 http://www.citi.umich.edu/projects/nfsv4/
1797
1798 If unsure, say N.
1799
1800config RPCSEC_GSS_SPKM3
1801 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1802 depends on SUNRPC && EXPERIMENTAL
1803 select SUNRPC_GSS
1804 select CRYPTO
1805 select CRYPTO_MD5
1806 select CRYPTO_DES
df6db302 1807 select CRYPTO_CAST5
bcbaecbb 1808 select CRYPTO_CBC
1da177e4
LT
1809 help
1810 Provides for secure RPC calls by means of a gss-api
1811 mechanism based on the SPKM3 public-key mechanism.
1812
1813 Note: Requires an auxiliary userspace daemon which may be found on
1814 http://www.citi.umich.edu/projects/nfsv4/
1815
1816 If unsure, say N.
1817
1818config SMB_FS
1819 tristate "SMB file system support (to mount Windows shares etc.)"
1820 depends on INET
1821 select NLS
1822 help
1823 SMB (Server Message Block) is the protocol Windows for Workgroups
1824 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1825 files and printers over local networks. Saying Y here allows you to
1826 mount their file systems (often called "shares" in this context) and
1827 access them just like any other Unix directory. Currently, this
1828 works only if the Windows machines use TCP/IP as the underlying
1829 transport protocol, and not NetBEUI. For details, read
1830 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1831 available from <http://www.tldp.org/docs.html#howto>.
1832
1833 Note: if you just want your box to act as an SMB *server* and make
1834 files and printing services available to Windows clients (which need
1835 to have a TCP/IP stack), you don't need to say Y here; you can use
1836 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1837 for that.
1838
1839 General information about how to connect Linux, Windows machines and
1840 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1841
1842 To compile the SMB support as a module, choose M here: the module will
1843 be called smbfs. Most people say N, however.
1844
1845config SMB_NLS_DEFAULT
1846 bool "Use a default NLS"
1847 depends on SMB_FS
1848 help
1849 Enabling this will make smbfs use nls translations by default. You
1850 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1851 settings and you need to give the default nls for the SMB server as
1852 CONFIG_SMB_NLS_REMOTE.
1853
1854 The nls settings can be changed at mount time, if your smbmount
1855 supports that, using the codepage and iocharset parameters.
1856
1857 smbmount from samba 2.2.0 or later supports this.
1858
1859config SMB_NLS_REMOTE
1860 string "Default Remote NLS Option"
1861 depends on SMB_NLS_DEFAULT
1862 default "cp437"
1863 help
1864 This setting allows you to specify a default value for which
1865 codepage the server uses. If this field is left blank no
1866 translations will be done by default. The local codepage/charset
1867 default to CONFIG_NLS_DEFAULT.
1868
1869 The nls settings can be changed at mount time, if your smbmount
1870 supports that, using the codepage and iocharset parameters.
1871
1872 smbmount from samba 2.2.0 or later supports this.
1873
1874config CIFS
1875 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1876 depends on INET
1877 select NLS
1878 help
1879 This is the client VFS module for the Common Internet File System
1880 (CIFS) protocol which is the successor to the Server Message Block
1881 (SMB) protocol, the native file sharing mechanism for most early
1882 PC operating systems. The CIFS protocol is fully supported by
1883 file servers such as Windows 2000 (including Windows 2003, NT 4
1884 and Windows XP) as well by Samba (which provides excellent CIFS
ec58ef03 1885 server support for Linux and many other operating systems). Limited
8af18971 1886 support for OS/2 and Windows ME and similar servers is provided as well.
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1887
1888 The intent of the cifs module is to provide an advanced
8af18971 1889 network file system client for mounting to CIFS compliant servers,
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1890 including support for dfs (hierarchical name space), secure per-user
1891 session establishment, safe distributed caching (oplock), optional
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1892 packet signing, Unicode and other internationalization improvements.
1893 If you need to mount to Samba or Windows from this machine, say Y.
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1894
1895config CIFS_STATS
1896 bool "CIFS statistics"
1897 depends on CIFS
1898 help
1899 Enabling this option will cause statistics for each server share
1900 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1901
ec58ef03 1902config CIFS_STATS2
3979877e 1903 bool "Extended statistics"
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1904 depends on CIFS_STATS
1905 help
1906 Enabling this option will allow more detailed statistics on SMB
1907 request timing to be displayed in /proc/fs/cifs/DebugData and also
1908 allow optional logging of slow responses to dmesg (depending on the
1909 value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1910 These additional statistics may have a minor effect on performance
1911 and memory utilization.
1912
1913 Unless you are a developer or are doing network performance analysis
1914 or tuning, say N.
1915
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1916config CIFS_WEAK_PW_HASH
1917 bool "Support legacy servers which use weaker LANMAN security"
1918 depends on CIFS
1919 help
1920 Modern CIFS servers including Samba and most Windows versions
1921 (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1922 security mechanisms. These hash the password more securely
1923 than the mechanisms used in the older LANMAN version of the
1924 SMB protocol needed to establish sessions with old SMB servers.
1925
1926 Enabling this option allows the cifs module to mount to older
1927 LANMAN based servers such as OS/2 and Windows 95, but such
1928 mounts may be less secure than mounts using NTLM or more recent
1929 security mechanisms if you are on a public network. Unless you
1930 have a need to access old SMB servers (and are on a private
1931 network) you probably want to say N. Even if this support
1932 is enabled in the kernel build, they will not be used
1933 automatically. At runtime LANMAN mounts are disabled but
1934 can be set to required (or optional) either in
1935 /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1936 option on the mount command. This support is disabled by
1937 default in order to reduce the possibility of a downgrade
1938 attack.
1939
1940 If unsure, say N.
1941
1da177e4 1942config CIFS_XATTR
ec58ef03 1943 bool "CIFS extended attributes"
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1944 depends on CIFS
1945 help
1946 Extended attributes are name:value pairs associated with inodes by
1947 the kernel or by users (see the attr(5) manual page, or visit
1948 <http://acl.bestbits.at/> for details). CIFS maps the name of
1949 extended attributes beginning with the user namespace prefix
1950 to SMB/CIFS EAs. EAs are stored on Windows servers without the
1951 user namespace prefix, but their names are seen by Linux cifs clients
1952 prefaced by the user namespace prefix. The system namespace
1953 (used by some filesystems to store ACLs) is not supported at
1954 this time.
ec58ef03 1955
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1956 If unsure, say N.
1957
1958config CIFS_POSIX
ec58ef03 1959 bool "CIFS POSIX Extensions"
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1960 depends on CIFS_XATTR
1961 help
1962 Enabling this option will cause the cifs client to attempt to
1963 negotiate a newer dialect with servers, such as Samba 3.0.5
1964 or later, that optionally can handle more POSIX like (rather
1965 than Windows like) file behavior. It also enables
1966 support for POSIX ACLs (getfacl and setfacl) to servers
1967 (such as Samba 3.10 and later) which can negotiate
1968 CIFS POSIX ACL support. If unsure, say N.
1969
3979877e 1970config CIFS_DEBUG2
3856a9d4 1971 bool "Enable additional CIFS debugging routines"
8ba10ab1 1972 depends on CIFS
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1973 help
1974 Enabling this option adds a few more debugging routines
1975 to the cifs code which slightly increases the size of
1976 the cifs module and can cause additional logging of debug
1977 messages in some error paths, slowing performance. This
1978 option can be turned off unless you are debugging
1979 cifs problems. If unsure, say N.
1980
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1981config CIFS_EXPERIMENTAL
1982 bool "CIFS Experimental Features (EXPERIMENTAL)"
cb9dbff9 1983 depends on CIFS && EXPERIMENTAL
1da177e4 1984 help
ec58ef03 1985 Enables cifs features under testing. These features are
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1986 experimental and currently include DFS support and directory
1987 change notification ie fcntl(F_DNOTIFY), as well as the upcall
1988 mechanism which will be used for Kerberos session negotiation
1989 and uid remapping. Some of these features also may depend on
1990 setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
1991 (which is disabled by default). See the file fs/cifs/README
1992 for more details. If unsure, say N.
1da177e4 1993
a2653eba 1994config CIFS_UPCALL
3979877e 1995 bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
a2653eba 1996 depends on CIFS_EXPERIMENTAL
230a0395 1997 depends on CONNECTOR
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1998 help
1999 Enables an upcall mechanism for CIFS which will be used to contact
2000 userspace helper utilities to provide SPNEGO packaged Kerberos
2001 tickets which are needed to mount to certain secure servers
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2002 (for which more secure Kerberos authentication is required). If
2003 unsure, say N.
a2653eba 2004
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2005config NCP_FS
2006 tristate "NCP file system support (to mount NetWare volumes)"
2007 depends on IPX!=n || INET
2008 help
2009 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2010 used by Novell NetWare clients to talk to file servers. It is to
2011 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
2012 to mount NetWare file server volumes and to access them just like
2013 any other Unix directory. For details, please read the file
2014 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2015 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2016
2017 You do not have to say Y here if you want your Linux box to act as a
2018 file *server* for Novell NetWare clients.
2019
2020 General information about how to connect Linux, Windows machines and
2021 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2022
2023 To compile this as a module, choose M here: the module will be called
2024 ncpfs. Say N unless you are connected to a Novell network.
2025
2026source "fs/ncpfs/Kconfig"
2027
2028config CODA_FS
2029 tristate "Coda file system support (advanced network fs)"
2030 depends on INET
2031 help
2032 Coda is an advanced network file system, similar to NFS in that it
2033 enables you to mount file systems of a remote server and access them
2034 with regular Unix commands as if they were sitting on your hard
2035 disk. Coda has several advantages over NFS: support for
2036 disconnected operation (e.g. for laptops), read/write server
2037 replication, security model for authentication and encryption,
2038 persistent client caches and write back caching.
2039
2040 If you say Y here, your Linux box will be able to act as a Coda
2041 *client*. You will need user level code as well, both for the
2042 client and server. Servers are currently user level, i.e. they need
2043 no kernel support. Please read
2044 <file:Documentation/filesystems/coda.txt> and check out the Coda
2045 home page <http://www.coda.cs.cmu.edu/>.
2046
2047 To compile the coda client support as a module, choose M here: the
2048 module will be called coda.
2049
2050config CODA_FS_OLD_API
2051 bool "Use 96-bit Coda file identifiers"
2052 depends on CODA_FS
2053 help
2054 A new kernel-userspace API had to be introduced for Coda v6.0
2055 to support larger 128-bit file identifiers as needed by the
2056 new realms implementation.
2057
2058 However this new API is not backward compatible with older
2059 clients. If you really need to run the old Coda userspace
2060 cache manager then say Y.
2061
2062 For most cases you probably want to say N.
2063
2064config AFS_FS
64aaa4f8 2065 tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
1da177e4 2066 depends on INET && EXPERIMENTAL
08e0e7c8 2067 select AF_RXRPC
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2068 help
2069 If you say Y here, you will get an experimental Andrew File System
2070 driver. It currently only supports unsecured read-only AFS access.
2071
cc2e2767 2072 See <file:Documentation/filesystems/afs.txt> for more information.
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2073
2074 If unsure, say N.
2075
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DH
2076config AFS_DEBUG
2077 bool "AFS dynamic debugging"
2078 depends on AFS_FS
2079 help
2080 Say Y here to make runtime controllable debugging messages appear.
2081
2082 See <file:Documentation/filesystems/afs.txt> for more information.
2083
2084 If unsure, say N.
2085
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2086config 9P_FS
2087 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
bd238fb4 2088 depends on INET && NET_9P && EXPERIMENTAL
93fa58cb
EVH
2089 help
2090 If you say Y here, you will get experimental support for
2091 Plan 9 resource sharing via the 9P2000 protocol.
2092
2093 See <http://v9fs.sf.net> for more information.
2094
2095 If unsure, say N.
2096
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2097endmenu
2098
9361401e 2099if BLOCK
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2100menu "Partition Types"
2101
2102source "fs/partitions/Kconfig"
2103
2104endmenu
9361401e 2105endif
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2106
2107source "fs/nls/Kconfig"
e7fd4179 2108source "fs/dlm/Kconfig"
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2109
2110endmenu
2111