Kconfig 71 KB

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  1. #
  2. # File system configuration
  3. #
  4. menu "File systems"
  5. if BLOCK
  6. config EXT2_FS
  7. tristate "Second extended fs support"
  8. help
  9. Ext2 is a standard Linux file system for hard disks.
  10. To compile this file system support as a module, choose M here: the
  11. module will be called ext2. Be aware however that the file system
  12. of your root partition (the one containing the directory /) cannot
  13. be compiled as a module, and so this could be dangerous.
  14. If unsure, say Y.
  15. config EXT2_FS_XATTR
  16. bool "Ext2 extended attributes"
  17. depends on EXT2_FS
  18. help
  19. Extended attributes are name:value pairs associated with inodes by
  20. the kernel or by users (see the attr(5) manual page, or visit
  21. <http://acl.bestbits.at/> for details).
  22. If unsure, say N.
  23. config EXT2_FS_POSIX_ACL
  24. bool "Ext2 POSIX Access Control Lists"
  25. depends on EXT2_FS_XATTR
  26. select FS_POSIX_ACL
  27. help
  28. Posix Access Control Lists (ACLs) support permissions for users and
  29. groups beyond the owner/group/world scheme.
  30. To learn more about Access Control Lists, visit the Posix ACLs for
  31. Linux website <http://acl.bestbits.at/>.
  32. If you don't know what Access Control Lists are, say N
  33. config EXT2_FS_SECURITY
  34. bool "Ext2 Security Labels"
  35. depends on EXT2_FS_XATTR
  36. help
  37. Security labels support alternative access control models
  38. implemented by security modules like SELinux. This option
  39. enables an extended attribute handler for file security
  40. labels in the ext2 filesystem.
  41. If you are not using a security module that requires using
  42. extended attributes for file security labels, say N.
  43. config EXT2_FS_XIP
  44. bool "Ext2 execute in place support"
  45. depends on EXT2_FS && MMU
  46. help
  47. Execute in place can be used on memory-backed block devices. If you
  48. enable this option, you can select to mount block devices which are
  49. capable of this feature without using the page cache.
  50. If you do not use a block device that is capable of using this,
  51. or if unsure, say N.
  52. config FS_XIP
  53. # execute in place
  54. bool
  55. depends on EXT2_FS_XIP
  56. default y
  57. config EXT3_FS
  58. tristate "Ext3 journalling file system support"
  59. select JBD
  60. help
  61. This is the journaling version of the Second extended file system
  62. (often called ext3), the de facto standard Linux file system
  63. (method to organize files on a storage device) for hard disks.
  64. The journaling code included in this driver means you do not have
  65. to run e2fsck (file system checker) on your file systems after a
  66. crash. The journal keeps track of any changes that were being made
  67. at the time the system crashed, and can ensure that your file system
  68. is consistent without the need for a lengthy check.
  69. Other than adding the journal to the file system, the on-disk format
  70. of ext3 is identical to ext2. It is possible to freely switch
  71. between using the ext3 driver and the ext2 driver, as long as the
  72. file system has been cleanly unmounted, or e2fsck is run on the file
  73. system.
  74. To add a journal on an existing ext2 file system or change the
  75. behavior of ext3 file systems, you can use the tune2fs utility ("man
  76. tune2fs"). To modify attributes of files and directories on ext3
  77. file systems, use chattr ("man chattr"). You need to be using
  78. e2fsprogs version 1.20 or later in order to create ext3 journals
  79. (available at <http://sourceforge.net/projects/e2fsprogs/>).
  80. To compile this file system support as a module, choose M here: the
  81. module will be called ext3. Be aware however that the file system
  82. of your root partition (the one containing the directory /) cannot
  83. be compiled as a module, and so this may be dangerous.
  84. config EXT3_FS_XATTR
  85. bool "Ext3 extended attributes"
  86. depends on EXT3_FS
  87. default y
  88. help
  89. Extended attributes are name:value pairs associated with inodes by
  90. the kernel or by users (see the attr(5) manual page, or visit
  91. <http://acl.bestbits.at/> for details).
  92. If unsure, say N.
  93. You need this for POSIX ACL support on ext3.
  94. config EXT3_FS_POSIX_ACL
  95. bool "Ext3 POSIX Access Control Lists"
  96. depends on EXT3_FS_XATTR
  97. select FS_POSIX_ACL
  98. help
  99. Posix Access Control Lists (ACLs) support permissions for users and
  100. groups beyond the owner/group/world scheme.
  101. To learn more about Access Control Lists, visit the Posix ACLs for
  102. Linux website <http://acl.bestbits.at/>.
  103. If you don't know what Access Control Lists are, say N
  104. config EXT3_FS_SECURITY
  105. bool "Ext3 Security Labels"
  106. depends on EXT3_FS_XATTR
  107. help
  108. Security labels support alternative access control models
  109. implemented by security modules like SELinux. This option
  110. enables an extended attribute handler for file security
  111. labels in the ext3 filesystem.
  112. If you are not using a security module that requires using
  113. extended attributes for file security labels, say N.
  114. config JBD
  115. tristate
  116. help
  117. This is a generic journaling layer for block devices. It is
  118. currently used by the ext3 and OCFS2 file systems, but it could
  119. also be used to add journal support to other file systems or block
  120. devices such as RAID or LVM.
  121. If you are using the ext3 or OCFS2 file systems, you need to
  122. say Y here. If you are not using ext3 OCFS2 then you will probably
  123. want to say N.
  124. To compile this device as a module, choose M here: the module will be
  125. called jbd. If you are compiling ext3 or OCFS2 into the kernel,
  126. you cannot compile this code as a module.
  127. config JBD_DEBUG
  128. bool "JBD (ext3) debugging support"
  129. depends on JBD
  130. help
  131. If you are using the ext3 journaled file system (or potentially any
  132. other file system/device using JBD), this option allows you to
  133. enable debugging output while the system is running, in order to
  134. help track down any problems you are having. By default the
  135. debugging output will be turned off.
  136. If you select Y here, then you will be able to turn on debugging
  137. with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
  138. 1 and 5, the higher the number, the more debugging output is
  139. generated. To turn debugging off again, do
  140. "echo 0 > /proc/sys/fs/jbd-debug".
  141. config FS_MBCACHE
  142. # Meta block cache for Extended Attributes (ext2/ext3)
  143. tristate
  144. depends on EXT2_FS_XATTR || EXT3_FS_XATTR
  145. default y if EXT2_FS=y || EXT3_FS=y
  146. default m if EXT2_FS=m || EXT3_FS=m
  147. config REISERFS_FS
  148. tristate "Reiserfs support"
  149. help
  150. Stores not just filenames but the files themselves in a balanced
  151. tree. Uses journaling.
  152. Balanced trees are more efficient than traditional file system
  153. architectural foundations.
  154. In general, ReiserFS is as fast as ext2, but is very efficient with
  155. large directories and small files. Additional patches are needed
  156. for NFS and quotas, please see <http://www.namesys.com/> for links.
  157. It is more easily extended to have features currently found in
  158. database and keyword search systems than block allocation based file
  159. systems are. The next version will be so extended, and will support
  160. plugins consistent with our motto ``It takes more than a license to
  161. make source code open.''
  162. Read <http://www.namesys.com/> to learn more about reiserfs.
  163. Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
  164. If you like it, you can pay us to add new features to it that you
  165. need, buy a support contract, or pay us to port it to another OS.
  166. config REISERFS_CHECK
  167. bool "Enable reiserfs debug mode"
  168. depends on REISERFS_FS
  169. help
  170. If you set this to Y, then ReiserFS will perform every check it can
  171. possibly imagine of its internal consistency throughout its
  172. operation. It will also go substantially slower. More than once we
  173. have forgotten that this was on, and then gone despondent over the
  174. latest benchmarks.:-) Use of this option allows our team to go all
  175. out in checking for consistency when debugging without fear of its
  176. effect on end users. If you are on the verge of sending in a bug
  177. report, say Y and you might get a useful error message. Almost
  178. everyone should say N.
  179. config REISERFS_PROC_INFO
  180. bool "Stats in /proc/fs/reiserfs"
  181. depends on REISERFS_FS
  182. help
  183. Create under /proc/fs/reiserfs a hierarchy of files, displaying
  184. various ReiserFS statistics and internal data at the expense of
  185. making your kernel or module slightly larger (+8 KB). This also
  186. increases the amount of kernel memory required for each mount.
  187. Almost everyone but ReiserFS developers and people fine-tuning
  188. reiserfs or tracing problems should say N.
  189. config REISERFS_FS_XATTR
  190. bool "ReiserFS extended attributes"
  191. depends on REISERFS_FS
  192. help
  193. Extended attributes are name:value pairs associated with inodes by
  194. the kernel or by users (see the attr(5) manual page, or visit
  195. <http://acl.bestbits.at/> for details).
  196. If unsure, say N.
  197. config REISERFS_FS_POSIX_ACL
  198. bool "ReiserFS POSIX Access Control Lists"
  199. depends on REISERFS_FS_XATTR
  200. select FS_POSIX_ACL
  201. help
  202. Posix Access Control Lists (ACLs) support permissions for users and
  203. groups beyond the owner/group/world scheme.
  204. To learn more about Access Control Lists, visit the Posix ACLs for
  205. Linux website <http://acl.bestbits.at/>.
  206. If you don't know what Access Control Lists are, say N
  207. config REISERFS_FS_SECURITY
  208. bool "ReiserFS Security Labels"
  209. depends on REISERFS_FS_XATTR
  210. help
  211. Security labels support alternative access control models
  212. implemented by security modules like SELinux. This option
  213. enables an extended attribute handler for file security
  214. labels in the ReiserFS filesystem.
  215. If you are not using a security module that requires using
  216. extended attributes for file security labels, say N.
  217. config JFS_FS
  218. tristate "JFS filesystem support"
  219. select NLS
  220. help
  221. This is a port of IBM's Journaled Filesystem . More information is
  222. available in the file <file:Documentation/filesystems/jfs.txt>.
  223. If you do not intend to use the JFS filesystem, say N.
  224. config JFS_POSIX_ACL
  225. bool "JFS POSIX Access Control Lists"
  226. depends on JFS_FS
  227. select FS_POSIX_ACL
  228. help
  229. Posix Access Control Lists (ACLs) support permissions for users and
  230. groups beyond the owner/group/world scheme.
  231. To learn more about Access Control Lists, visit the Posix ACLs for
  232. Linux website <http://acl.bestbits.at/>.
  233. If you don't know what Access Control Lists are, say N
  234. config JFS_SECURITY
  235. bool "JFS Security Labels"
  236. depends on JFS_FS
  237. help
  238. Security labels support alternative access control models
  239. implemented by security modules like SELinux. This option
  240. enables an extended attribute handler for file security
  241. labels in the jfs filesystem.
  242. If you are not using a security module that requires using
  243. extended attributes for file security labels, say N.
  244. config JFS_DEBUG
  245. bool "JFS debugging"
  246. depends on JFS_FS
  247. help
  248. If you are experiencing any problems with the JFS filesystem, say
  249. Y here. This will result in additional debugging messages to be
  250. written to the system log. Under normal circumstances, this
  251. results in very little overhead.
  252. config JFS_STATISTICS
  253. bool "JFS statistics"
  254. depends on JFS_FS
  255. help
  256. Enabling this option will cause statistics from the JFS file system
  257. to be made available to the user in the /proc/fs/jfs/ directory.
  258. config FS_POSIX_ACL
  259. # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
  260. #
  261. # NOTE: you can implement Posix ACLs without these helpers (XFS does).
  262. # Never use this symbol for ifdefs.
  263. #
  264. bool
  265. default n
  266. source "fs/xfs/Kconfig"
  267. config OCFS2_FS
  268. tristate "OCFS2 file system support"
  269. depends on NET && SYSFS
  270. select CONFIGFS_FS
  271. select JBD
  272. select CRC32
  273. select INET
  274. help
  275. OCFS2 is a general purpose extent based shared disk cluster file
  276. system with many similarities to ext3. It supports 64 bit inode
  277. numbers, and has automatically extending metadata groups which may
  278. also make it attractive for non-clustered use.
  279. You'll want to install the ocfs2-tools package in order to at least
  280. get "mount.ocfs2".
  281. Project web page: http://oss.oracle.com/projects/ocfs2
  282. Tools web page: http://oss.oracle.com/projects/ocfs2-tools
  283. OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
  284. Note: Features which OCFS2 does not support yet:
  285. - extended attributes
  286. - shared writeable mmap
  287. - loopback is supported, but data written will not
  288. be cluster coherent.
  289. - quotas
  290. - cluster aware flock
  291. - Directory change notification (F_NOTIFY)
  292. - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
  293. - POSIX ACLs
  294. - readpages / writepages (not user visible)
  295. config OCFS2_DEBUG_MASKLOG
  296. bool "OCFS2 logging support"
  297. depends on OCFS2_FS
  298. default y
  299. help
  300. The ocfs2 filesystem has an extensive logging system. The system
  301. allows selection of events to log via files in /sys/o2cb/logmask/.
  302. This option will enlarge your kernel, but it allows debugging of
  303. ocfs2 filesystem issues.
  304. config MINIX_FS
  305. tristate "Minix fs support"
  306. help
  307. Minix is a simple operating system used in many classes about OS's.
  308. The minix file system (method to organize files on a hard disk
  309. partition or a floppy disk) was the original file system for Linux,
  310. but has been superseded by the second extended file system ext2fs.
  311. You don't want to use the minix file system on your hard disk
  312. because of certain built-in restrictions, but it is sometimes found
  313. on older Linux floppy disks. This option will enlarge your kernel
  314. by about 28 KB. If unsure, say N.
  315. To compile this file system support as a module, choose M here: the
  316. module will be called minix. Note that the file system of your root
  317. partition (the one containing the directory /) cannot be compiled as
  318. a module.
  319. config ROMFS_FS
  320. tristate "ROM file system support"
  321. ---help---
  322. This is a very small read-only file system mainly intended for
  323. initial ram disks of installation disks, but it could be used for
  324. other read-only media as well. Read
  325. <file:Documentation/filesystems/romfs.txt> for details.
  326. To compile this file system support as a module, choose M here: the
  327. module will be called romfs. Note that the file system of your
  328. root partition (the one containing the directory /) cannot be a
  329. module.
  330. If you don't know whether you need it, then you don't need it:
  331. answer N.
  332. endif
  333. config INOTIFY
  334. bool "Inotify file change notification support"
  335. default y
  336. ---help---
  337. Say Y here to enable inotify support. Inotify is a file change
  338. notification system and a replacement for dnotify. Inotify fixes
  339. numerous shortcomings in dnotify and introduces several new features
  340. including multiple file events, one-shot support, and unmount
  341. notification.
  342. For more information, see Documentation/filesystems/inotify.txt
  343. If unsure, say Y.
  344. config INOTIFY_USER
  345. bool "Inotify support for userspace"
  346. depends on INOTIFY
  347. default y
  348. ---help---
  349. Say Y here to enable inotify support for userspace, including the
  350. associated system calls. Inotify allows monitoring of both files and
  351. directories via a single open fd. Events are read from the file
  352. descriptor, which is also select()- and poll()-able.
  353. For more information, see Documentation/filesystems/inotify.txt
  354. If unsure, say Y.
  355. config QUOTA
  356. bool "Quota support"
  357. help
  358. If you say Y here, you will be able to set per user limits for disk
  359. usage (also called disk quotas). Currently, it works for the
  360. ext2, ext3, and reiserfs file system. ext3 also supports journalled
  361. quotas for which you don't need to run quotacheck(8) after an unclean
  362. shutdown.
  363. For further details, read the Quota mini-HOWTO, available from
  364. <http://www.tldp.org/docs.html#howto>, or the documentation provided
  365. with the quota tools. Probably the quota support is only useful for
  366. multi user systems. If unsure, say N.
  367. config QFMT_V1
  368. tristate "Old quota format support"
  369. depends on QUOTA
  370. help
  371. This quota format was (is) used by kernels earlier than 2.4.22. If
  372. you have quota working and you don't want to convert to new quota
  373. format say Y here.
  374. config QFMT_V2
  375. tristate "Quota format v2 support"
  376. depends on QUOTA
  377. help
  378. This quota format allows using quotas with 32-bit UIDs/GIDs. If you
  379. need this functionality say Y here.
  380. config QUOTACTL
  381. bool
  382. depends on XFS_QUOTA || QUOTA
  383. default y
  384. config DNOTIFY
  385. bool "Dnotify support" if EMBEDDED
  386. default y
  387. help
  388. Dnotify is a directory-based per-fd file change notification system
  389. that uses signals to communicate events to user-space. There exist
  390. superior alternatives, but some applications may still rely on
  391. dnotify.
  392. Because of this, if unsure, say Y.
  393. config AUTOFS_FS
  394. tristate "Kernel automounter support"
  395. help
  396. The automounter is a tool to automatically mount remote file systems
  397. on demand. This implementation is partially kernel-based to reduce
  398. overhead in the already-mounted case; this is unlike the BSD
  399. automounter (amd), which is a pure user space daemon.
  400. To use the automounter you need the user-space tools from the autofs
  401. package; you can find the location in <file:Documentation/Changes>.
  402. You also want to answer Y to "NFS file system support", below.
  403. If you want to use the newer version of the automounter with more
  404. features, say N here and say Y to "Kernel automounter v4 support",
  405. below.
  406. To compile this support as a module, choose M here: the module will be
  407. called autofs.
  408. If you are not a part of a fairly large, distributed network, you
  409. probably do not need an automounter, and can say N here.
  410. config AUTOFS4_FS
  411. tristate "Kernel automounter version 4 support (also supports v3)"
  412. help
  413. The automounter is a tool to automatically mount remote file systems
  414. on demand. This implementation is partially kernel-based to reduce
  415. overhead in the already-mounted case; this is unlike the BSD
  416. automounter (amd), which is a pure user space daemon.
  417. To use the automounter you need the user-space tools from
  418. <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
  419. want to answer Y to "NFS file system support", below.
  420. To compile this support as a module, choose M here: the module will be
  421. called autofs4. You will need to add "alias autofs autofs4" to your
  422. modules configuration file.
  423. If you are not a part of a fairly large, distributed network or
  424. don't have a laptop which needs to dynamically reconfigure to the
  425. local network, you probably do not need an automounter, and can say
  426. N here.
  427. config FUSE_FS
  428. tristate "Filesystem in Userspace support"
  429. help
  430. With FUSE it is possible to implement a fully functional filesystem
  431. in a userspace program.
  432. There's also companion library: libfuse. This library along with
  433. utilities is available from the FUSE homepage:
  434. <http://fuse.sourceforge.net/>
  435. See <file:Documentation/filesystems/fuse.txt> for more information.
  436. See <file:Documentation/Changes> for needed library/utility version.
  437. If you want to develop a userspace FS, or if you want to use
  438. a filesystem based on FUSE, answer Y or M.
  439. if BLOCK
  440. menu "CD-ROM/DVD Filesystems"
  441. config ISO9660_FS
  442. tristate "ISO 9660 CDROM file system support"
  443. help
  444. This is the standard file system used on CD-ROMs. It was previously
  445. known as "High Sierra File System" and is called "hsfs" on other
  446. Unix systems. The so-called Rock-Ridge extensions which allow for
  447. long Unix filenames and symbolic links are also supported by this
  448. driver. If you have a CD-ROM drive and want to do more with it than
  449. just listen to audio CDs and watch its LEDs, say Y (and read
  450. <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
  451. available from <http://www.tldp.org/docs.html#howto>), thereby
  452. enlarging your kernel by about 27 KB; otherwise say N.
  453. To compile this file system support as a module, choose M here: the
  454. module will be called isofs.
  455. config JOLIET
  456. bool "Microsoft Joliet CDROM extensions"
  457. depends on ISO9660_FS
  458. select NLS
  459. help
  460. Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
  461. which allows for long filenames in unicode format (unicode is the
  462. new 16 bit character code, successor to ASCII, which encodes the
  463. characters of almost all languages of the world; see
  464. <http://www.unicode.org/> for more information). Say Y here if you
  465. want to be able to read Joliet CD-ROMs under Linux.
  466. config ZISOFS
  467. bool "Transparent decompression extension"
  468. depends on ISO9660_FS
  469. select ZLIB_INFLATE
  470. help
  471. This is a Linux-specific extension to RockRidge which lets you store
  472. data in compressed form on a CD-ROM and have it transparently
  473. decompressed when the CD-ROM is accessed. See
  474. <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
  475. necessary to create such a filesystem. Say Y here if you want to be
  476. able to read such compressed CD-ROMs.
  477. config ZISOFS_FS
  478. # for fs/nls/Config.in
  479. tristate
  480. depends on ZISOFS
  481. default ISO9660_FS
  482. config UDF_FS
  483. tristate "UDF file system support"
  484. help
  485. This is the new file system used on some CD-ROMs and DVDs. Say Y if
  486. you intend to mount DVD discs or CDRW's written in packet mode, or
  487. if written to by other UDF utilities, such as DirectCD.
  488. Please read <file:Documentation/filesystems/udf.txt>.
  489. To compile this file system support as a module, choose M here: the
  490. module will be called udf.
  491. If unsure, say N.
  492. config UDF_NLS
  493. bool
  494. default y
  495. depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
  496. endmenu
  497. endif
  498. if BLOCK
  499. menu "DOS/FAT/NT Filesystems"
  500. config FAT_FS
  501. tristate
  502. select NLS
  503. help
  504. If you want to use one of the FAT-based file systems (the MS-DOS and
  505. VFAT (Windows 95) file systems), then you must say Y or M here
  506. to include FAT support. You will then be able to mount partitions or
  507. diskettes with FAT-based file systems and transparently access the
  508. files on them, i.e. MSDOS files will look and behave just like all
  509. other Unix files.
  510. This FAT support is not a file system in itself, it only provides
  511. the foundation for the other file systems. You will have to say Y or
  512. M to at least one of "MSDOS fs support" or "VFAT fs support" in
  513. order to make use of it.
  514. Another way to read and write MSDOS floppies and hard drive
  515. partitions from within Linux (but not transparently) is with the
  516. mtools ("man mtools") program suite. You don't need to say Y here in
  517. order to do that.
  518. If you need to move large files on floppies between a DOS and a
  519. Linux box, say Y here, mount the floppy under Linux with an MSDOS
  520. file system and use GNU tar's M option. GNU tar is a program
  521. available for Unix and DOS ("man tar" or "info tar").
  522. It is now also becoming possible to read and write compressed FAT
  523. file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
  524. details.
  525. The FAT support will enlarge your kernel by about 37 KB. If unsure,
  526. say Y.
  527. To compile this as a module, choose M here: the module will be called
  528. fat. Note that if you compile the FAT support as a module, you
  529. cannot compile any of the FAT-based file systems into the kernel
  530. -- they will have to be modules as well.
  531. config MSDOS_FS
  532. tristate "MSDOS fs support"
  533. select FAT_FS
  534. help
  535. This allows you to mount MSDOS partitions of your hard drive (unless
  536. they are compressed; to access compressed MSDOS partitions under
  537. Linux, you can either use the DOS emulator DOSEMU, described in the
  538. DOSEMU-HOWTO, available from
  539. <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
  540. <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
  541. intend to use dosemu with a non-compressed MSDOS partition, say Y
  542. here) and MSDOS floppies. This means that file access becomes
  543. transparent, i.e. the MSDOS files look and behave just like all
  544. other Unix files.
  545. If you have Windows 95 or Windows NT installed on your MSDOS
  546. partitions, you should use the VFAT file system (say Y to "VFAT fs
  547. support" below), or you will not be able to see the long filenames
  548. generated by Windows 95 / Windows NT.
  549. This option will enlarge your kernel by about 7 KB. If unsure,
  550. answer Y. This will only work if you said Y to "DOS FAT fs support"
  551. as well. To compile this as a module, choose M here: the module will
  552. be called msdos.
  553. config VFAT_FS
  554. tristate "VFAT (Windows-95) fs support"
  555. select FAT_FS
  556. help
  557. This option provides support for normal Windows file systems with
  558. long filenames. That includes non-compressed FAT-based file systems
  559. used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
  560. programs from the mtools package.
  561. The VFAT support enlarges your kernel by about 10 KB and it only
  562. works if you said Y to the "DOS FAT fs support" above. Please read
  563. the file <file:Documentation/filesystems/vfat.txt> for details. If
  564. unsure, say Y.
  565. To compile this as a module, choose M here: the module will be called
  566. vfat.
  567. config FAT_DEFAULT_CODEPAGE
  568. int "Default codepage for FAT"
  569. depends on MSDOS_FS || VFAT_FS
  570. default 437
  571. help
  572. This option should be set to the codepage of your FAT filesystems.
  573. It can be overridden with the "codepage" mount option.
  574. See <file:Documentation/filesystems/vfat.txt> for more information.
  575. config FAT_DEFAULT_IOCHARSET
  576. string "Default iocharset for FAT"
  577. depends on VFAT_FS
  578. default "iso8859-1"
  579. help
  580. Set this to the default input/output character set you'd
  581. like FAT to use. It should probably match the character set
  582. that most of your FAT filesystems use, and can be overridden
  583. with the "iocharset" mount option for FAT filesystems.
  584. Note that "utf8" is not recommended for FAT filesystems.
  585. If unsure, you shouldn't set "utf8" here.
  586. See <file:Documentation/filesystems/vfat.txt> for more information.
  587. config NTFS_FS
  588. tristate "NTFS file system support"
  589. select NLS
  590. help
  591. NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
  592. Saying Y or M here enables read support. There is partial, but
  593. safe, write support available. For write support you must also
  594. say Y to "NTFS write support" below.
  595. There are also a number of user-space tools available, called
  596. ntfsprogs. These include ntfsundelete and ntfsresize, that work
  597. without NTFS support enabled in the kernel.
  598. This is a rewrite from scratch of Linux NTFS support and replaced
  599. the old NTFS code starting with Linux 2.5.11. A backport to
  600. the Linux 2.4 kernel series is separately available as a patch
  601. from the project web site.
  602. For more information see <file:Documentation/filesystems/ntfs.txt>
  603. and <http://linux-ntfs.sourceforge.net/>.
  604. To compile this file system support as a module, choose M here: the
  605. module will be called ntfs.
  606. If you are not using Windows NT, 2000, XP or 2003 in addition to
  607. Linux on your computer it is safe to say N.
  608. config NTFS_DEBUG
  609. bool "NTFS debugging support"
  610. depends on NTFS_FS
  611. help
  612. If you are experiencing any problems with the NTFS file system, say
  613. Y here. This will result in additional consistency checks to be
  614. performed by the driver as well as additional debugging messages to
  615. be written to the system log. Note that debugging messages are
  616. disabled by default. To enable them, supply the option debug_msgs=1
  617. at the kernel command line when booting the kernel or as an option
  618. to insmod when loading the ntfs module. Once the driver is active,
  619. you can enable debugging messages by doing (as root):
  620. echo 1 > /proc/sys/fs/ntfs-debug
  621. Replacing the "1" with "0" would disable debug messages.
  622. If you leave debugging messages disabled, this results in little
  623. overhead, but enabling debug messages results in very significant
  624. slowdown of the system.
  625. When reporting bugs, please try to have available a full dump of
  626. debugging messages while the misbehaviour was occurring.
  627. config NTFS_RW
  628. bool "NTFS write support"
  629. depends on NTFS_FS
  630. help
  631. This enables the partial, but safe, write support in the NTFS driver.
  632. The only supported operation is overwriting existing files, without
  633. changing the file length. No file or directory creation, deletion or
  634. renaming is possible. Note only non-resident files can be written to
  635. so you may find that some very small files (<500 bytes or so) cannot
  636. be written to.
  637. While we cannot guarantee that it will not damage any data, we have
  638. so far not received a single report where the driver would have
  639. damaged someones data so we assume it is perfectly safe to use.
  640. Note: While write support is safe in this version (a rewrite from
  641. scratch of the NTFS support), it should be noted that the old NTFS
  642. write support, included in Linux 2.5.10 and before (since 1997),
  643. is not safe.
  644. This is currently useful with TopologiLinux. TopologiLinux is run
  645. on top of any DOS/Microsoft Windows system without partitioning your
  646. hard disk. Unlike other Linux distributions TopologiLinux does not
  647. need its own partition. For more information see
  648. <http://topologi-linux.sourceforge.net/>
  649. It is perfectly safe to say N here.
  650. endmenu
  651. endif
  652. menu "Pseudo filesystems"
  653. config PROC_FS
  654. bool "/proc file system support" if EMBEDDED
  655. default y
  656. help
  657. This is a virtual file system providing information about the status
  658. of the system. "Virtual" means that it doesn't take up any space on
  659. your hard disk: the files are created on the fly by the kernel when
  660. you try to access them. Also, you cannot read the files with older
  661. version of the program less: you need to use more or cat.
  662. It's totally cool; for example, "cat /proc/interrupts" gives
  663. information about what the different IRQs are used for at the moment
  664. (there is a small number of Interrupt ReQuest lines in your computer
  665. that are used by the attached devices to gain the CPU's attention --
  666. often a source of trouble if two devices are mistakenly configured
  667. to use the same IRQ). The program procinfo to display some
  668. information about your system gathered from the /proc file system.
  669. Before you can use the /proc file system, it has to be mounted,
  670. meaning it has to be given a location in the directory hierarchy.
  671. That location should be /proc. A command such as "mount -t proc proc
  672. /proc" or the equivalent line in /etc/fstab does the job.
  673. The /proc file system is explained in the file
  674. <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
  675. ("man 5 proc").
  676. This option will enlarge your kernel by about 67 KB. Several
  677. programs depend on this, so everyone should say Y here.
  678. config PROC_KCORE
  679. bool "/proc/kcore support" if !ARM
  680. depends on PROC_FS && MMU
  681. config PROC_VMCORE
  682. bool "/proc/vmcore support (EXPERIMENTAL)"
  683. depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
  684. default y
  685. help
  686. Exports the dump image of crashed kernel in ELF format.
  687. config PROC_SYSCTL
  688. bool "Sysctl support (/proc/sys)" if EMBEDDED
  689. depends on PROC_FS
  690. select SYSCTL
  691. default y
  692. ---help---
  693. The sysctl interface provides a means of dynamically changing
  694. certain kernel parameters and variables on the fly without requiring
  695. a recompile of the kernel or reboot of the system. The primary
  696. interface is through /proc/sys. If you say Y here a tree of
  697. modifiable sysctl entries will be generated beneath the
  698. /proc/sys directory. They are explained in the files
  699. in <file:Documentation/sysctl/>. Note that enabling this
  700. option will enlarge the kernel by at least 8 KB.
  701. As it is generally a good thing, you should say Y here unless
  702. building a kernel for install/rescue disks or your system is very
  703. limited in memory.
  704. config SYSFS
  705. bool "sysfs file system support" if EMBEDDED
  706. default y
  707. help
  708. The sysfs filesystem is a virtual filesystem that the kernel uses to
  709. export internal kernel objects, their attributes, and their
  710. relationships to one another.
  711. Users can use sysfs to ascertain useful information about the running
  712. kernel, such as the devices the kernel has discovered on each bus and
  713. which driver each is bound to. sysfs can also be used to tune devices
  714. and other kernel subsystems.
  715. Some system agents rely on the information in sysfs to operate.
  716. /sbin/hotplug uses device and object attributes in sysfs to assist in
  717. delegating policy decisions, like persistantly naming devices.
  718. sysfs is currently used by the block subsystem to mount the root
  719. partition. If sysfs is disabled you must specify the boot device on
  720. the kernel boot command line via its major and minor numbers. For
  721. example, "root=03:01" for /dev/hda1.
  722. Designers of embedded systems may wish to say N here to conserve space.
  723. config TMPFS
  724. bool "Virtual memory file system support (former shm fs)"
  725. help
  726. Tmpfs is a file system which keeps all files in virtual memory.
  727. Everything in tmpfs is temporary in the sense that no files will be
  728. created on your hard drive. The files live in memory and swap
  729. space. If you unmount a tmpfs instance, everything stored therein is
  730. lost.
  731. See <file:Documentation/filesystems/tmpfs.txt> for details.
  732. config TMPFS_POSIX_ACL
  733. bool "Tmpfs POSIX Access Control Lists"
  734. depends on TMPFS
  735. select GENERIC_ACL
  736. help
  737. POSIX Access Control Lists (ACLs) support permissions for users and
  738. groups beyond the owner/group/world scheme.
  739. To learn more about Access Control Lists, visit the POSIX ACLs for
  740. Linux website <http://acl.bestbits.at/>.
  741. If you don't know what Access Control Lists are, say N.
  742. config HUGETLBFS
  743. bool "HugeTLB file system support"
  744. depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || BROKEN
  745. help
  746. hugetlbfs is a filesystem backing for HugeTLB pages, based on
  747. ramfs. For architectures that support it, say Y here and read
  748. <file:Documentation/vm/hugetlbpage.txt> for details.
  749. If unsure, say N.
  750. config HUGETLB_PAGE
  751. def_bool HUGETLBFS
  752. config RAMFS
  753. bool
  754. default y
  755. ---help---
  756. Ramfs is a file system which keeps all files in RAM. It allows
  757. read and write access.
  758. It is more of an programming example than a useable file system. If
  759. you need a file system which lives in RAM with limit checking use
  760. tmpfs.
  761. To compile this as a module, choose M here: the module will be called
  762. ramfs.
  763. config CONFIGFS_FS
  764. tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)"
  765. depends on SYSFS && EXPERIMENTAL
  766. help
  767. configfs is a ram-based filesystem that provides the converse
  768. of sysfs's functionality. Where sysfs is a filesystem-based
  769. view of kernel objects, configfs is a filesystem-based manager
  770. of kernel objects, or config_items.
  771. Both sysfs and configfs can and should exist together on the
  772. same system. One is not a replacement for the other.
  773. endmenu
  774. menu "Miscellaneous filesystems"
  775. config ADFS_FS
  776. tristate "ADFS file system support (EXPERIMENTAL)"
  777. depends on BLOCK && EXPERIMENTAL
  778. help
  779. The Acorn Disc Filing System is the standard file system of the
  780. RiscOS operating system which runs on Acorn's ARM-based Risc PC
  781. systems and the Acorn Archimedes range of machines. If you say Y
  782. here, Linux will be able to read from ADFS partitions on hard drives
  783. and from ADFS-formatted floppy discs. If you also want to be able to
  784. write to those devices, say Y to "ADFS write support" below.
  785. The ADFS partition should be the first partition (i.e.,
  786. /dev/[hs]d?1) on each of your drives. Please read the file
  787. <file:Documentation/filesystems/adfs.txt> for further details.
  788. To compile this code as a module, choose M here: the module will be
  789. called adfs.
  790. If unsure, say N.
  791. config ADFS_FS_RW
  792. bool "ADFS write support (DANGEROUS)"
  793. depends on ADFS_FS
  794. help
  795. If you say Y here, you will be able to write to ADFS partitions on
  796. hard drives and ADFS-formatted floppy disks. This is experimental
  797. codes, so if you're unsure, say N.
  798. config AFFS_FS
  799. tristate "Amiga FFS file system support (EXPERIMENTAL)"
  800. depends on BLOCK && EXPERIMENTAL
  801. help
  802. The Fast File System (FFS) is the common file system used on hard
  803. disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
  804. if you want to be able to read and write files from and to an Amiga
  805. FFS partition on your hard drive. Amiga floppies however cannot be
  806. read with this driver due to an incompatibility of the floppy
  807. controller used in an Amiga and the standard floppy controller in
  808. PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
  809. and <file:fs/affs/Changes>.
  810. With this driver you can also mount disk files used by Bernd
  811. Schmidt's Un*X Amiga Emulator
  812. (<http://www.freiburg.linux.de/~uae/>).
  813. If you want to do this, you will also need to say Y or M to "Loop
  814. device support", above.
  815. To compile this file system support as a module, choose M here: the
  816. module will be called affs. If unsure, say N.
  817. config HFS_FS
  818. tristate "Apple Macintosh file system support (EXPERIMENTAL)"
  819. depends on BLOCK && EXPERIMENTAL
  820. select NLS
  821. help
  822. If you say Y here, you will be able to mount Macintosh-formatted
  823. floppy disks and hard drive partitions with full read-write access.
  824. Please read <file:fs/hfs/HFS.txt> to learn about the available mount
  825. options.
  826. To compile this file system support as a module, choose M here: the
  827. module will be called hfs.
  828. config HFSPLUS_FS
  829. tristate "Apple Extended HFS file system support"
  830. depends on BLOCK
  831. select NLS
  832. select NLS_UTF8
  833. help
  834. If you say Y here, you will be able to mount extended format
  835. Macintosh-formatted hard drive partitions with full read-write access.
  836. This file system is often called HFS+ and was introduced with
  837. MacOS 8. It includes all Mac specific filesystem data such as
  838. data forks and creator codes, but it also has several UNIX
  839. style features such as file ownership and permissions.
  840. config BEFS_FS
  841. tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
  842. depends on BLOCK && EXPERIMENTAL
  843. select NLS
  844. help
  845. The BeOS File System (BeFS) is the native file system of Be, Inc's
  846. BeOS. Notable features include support for arbitrary attributes
  847. on files and directories, and database-like indeces on selected
  848. attributes. (Also note that this driver doesn't make those features
  849. available at this time). It is a 64 bit filesystem, so it supports
  850. extremly large volumes and files.
  851. If you use this filesystem, you should also say Y to at least one
  852. of the NLS (native language support) options below.
  853. If you don't know what this is about, say N.
  854. To compile this as a module, choose M here: the module will be
  855. called befs.
  856. config BEFS_DEBUG
  857. bool "Debug BeFS"
  858. depends on BEFS_FS
  859. help
  860. If you say Y here, you can use the 'debug' mount option to enable
  861. debugging output from the driver.
  862. config BFS_FS
  863. tristate "BFS file system support (EXPERIMENTAL)"
  864. depends on BLOCK && EXPERIMENTAL
  865. help
  866. Boot File System (BFS) is a file system used under SCO UnixWare to
  867. allow the bootloader access to the kernel image and other important
  868. files during the boot process. It is usually mounted under /stand
  869. and corresponds to the slice marked as "STAND" in the UnixWare
  870. partition. You should say Y if you want to read or write the files
  871. on your /stand slice from within Linux. You then also need to say Y
  872. to "UnixWare slices support", below. More information about the BFS
  873. file system is contained in the file
  874. <file:Documentation/filesystems/bfs.txt>.
  875. If you don't know what this is about, say N.
  876. To compile this as a module, choose M here: the module will be called
  877. bfs. Note that the file system of your root partition (the one
  878. containing the directory /) cannot be compiled as a module.
  879. config EFS_FS
  880. tristate "EFS file system support (read only) (EXPERIMENTAL)"
  881. depends on BLOCK && EXPERIMENTAL
  882. help
  883. EFS is an older file system used for non-ISO9660 CD-ROMs and hard
  884. disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
  885. uses the XFS file system for hard disk partitions however).
  886. This implementation only offers read-only access. If you don't know
  887. what all this is about, it's safe to say N. For more information
  888. about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
  889. To compile the EFS file system support as a module, choose M here: the
  890. module will be called efs.
  891. config JFFS_FS
  892. tristate "Journalling Flash File System (JFFS) support"
  893. depends on MTD && BLOCK
  894. help
  895. JFFS is the Journaling Flash File System developed by Axis
  896. Communications in Sweden, aimed at providing a crash/powerdown-safe
  897. file system for disk-less embedded devices. Further information is
  898. available at (<http://developer.axis.com/software/jffs/>).
  899. config JFFS_FS_VERBOSE
  900. int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
  901. depends on JFFS_FS
  902. default "0"
  903. help
  904. Determines the verbosity level of the JFFS debugging messages.
  905. config JFFS_PROC_FS
  906. bool "JFFS stats available in /proc filesystem"
  907. depends on JFFS_FS && PROC_FS
  908. help
  909. Enabling this option will cause statistics from mounted JFFS file systems
  910. to be made available to the user in the /proc/fs/jffs/ directory.
  911. config JFFS2_FS
  912. tristate "Journalling Flash File System v2 (JFFS2) support"
  913. select CRC32
  914. depends on MTD
  915. help
  916. JFFS2 is the second generation of the Journalling Flash File System
  917. for use on diskless embedded devices. It provides improved wear
  918. levelling, compression and support for hard links. You cannot use
  919. this on normal block devices, only on 'MTD' devices.
  920. Further information on the design and implementation of JFFS2 is
  921. available at <http://sources.redhat.com/jffs2/>.
  922. config JFFS2_FS_DEBUG
  923. int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
  924. depends on JFFS2_FS
  925. default "0"
  926. help
  927. This controls the amount of debugging messages produced by the JFFS2
  928. code. Set it to zero for use in production systems. For evaluation,
  929. testing and debugging, it's advisable to set it to one. This will
  930. enable a few assertions and will print debugging messages at the
  931. KERN_DEBUG loglevel, where they won't normally be visible. Level 2
  932. is unlikely to be useful - it enables extra debugging in certain
  933. areas which at one point needed debugging, but when the bugs were
  934. located and fixed, the detailed messages were relegated to level 2.
  935. If reporting bugs, please try to have available a full dump of the
  936. messages at debug level 1 while the misbehaviour was occurring.
  937. config JFFS2_FS_WRITEBUFFER
  938. bool "JFFS2 write-buffering support"
  939. depends on JFFS2_FS
  940. default y
  941. help
  942. This enables the write-buffering support in JFFS2.
  943. This functionality is required to support JFFS2 on the following
  944. types of flash devices:
  945. - NAND flash
  946. - NOR flash with transparent ECC
  947. - DataFlash
  948. config JFFS2_SUMMARY
  949. bool "JFFS2 summary support (EXPERIMENTAL)"
  950. depends on JFFS2_FS && EXPERIMENTAL
  951. default n
  952. help
  953. This feature makes it possible to use summary information
  954. for faster filesystem mount.
  955. The summary information can be inserted into a filesystem image
  956. by the utility 'sumtool'.
  957. If unsure, say 'N'.
  958. config JFFS2_FS_XATTR
  959. bool "JFFS2 XATTR support (EXPERIMENTAL)"
  960. depends on JFFS2_FS && EXPERIMENTAL
  961. default n
  962. help
  963. Extended attributes are name:value pairs associated with inodes by
  964. the kernel or by users (see the attr(5) manual page, or visit
  965. <http://acl.bestbits.at/> for details).
  966. If unsure, say N.
  967. config JFFS2_FS_POSIX_ACL
  968. bool "JFFS2 POSIX Access Control Lists"
  969. depends on JFFS2_FS_XATTR
  970. default y
  971. select FS_POSIX_ACL
  972. help
  973. Posix Access Control Lists (ACLs) support permissions for users and
  974. groups beyond the owner/group/world scheme.
  975. To learn more about Access Control Lists, visit the Posix ACLs for
  976. Linux website <http://acl.bestbits.at/>.
  977. If you don't know what Access Control Lists are, say N
  978. config JFFS2_FS_SECURITY
  979. bool "JFFS2 Security Labels"
  980. depends on JFFS2_FS_XATTR
  981. default y
  982. help
  983. Security labels support alternative access control models
  984. implemented by security modules like SELinux. This option
  985. enables an extended attribute handler for file security
  986. labels in the jffs2 filesystem.
  987. If you are not using a security module that requires using
  988. extended attributes for file security labels, say N.
  989. config JFFS2_COMPRESSION_OPTIONS
  990. bool "Advanced compression options for JFFS2"
  991. depends on JFFS2_FS
  992. default n
  993. help
  994. Enabling this option allows you to explicitly choose which
  995. compression modules, if any, are enabled in JFFS2. Removing
  996. compressors and mean you cannot read existing file systems,
  997. and enabling experimental compressors can mean that you
  998. write a file system which cannot be read by a standard kernel.
  999. If unsure, you should _definitely_ say 'N'.
  1000. config JFFS2_ZLIB
  1001. bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
  1002. select ZLIB_INFLATE
  1003. select ZLIB_DEFLATE
  1004. depends on JFFS2_FS
  1005. default y
  1006. help
  1007. Zlib is designed to be a free, general-purpose, legally unencumbered,
  1008. lossless data-compression library for use on virtually any computer
  1009. hardware and operating system. See <http://www.gzip.org/zlib/> for
  1010. further information.
  1011. Say 'Y' if unsure.
  1012. config JFFS2_RTIME
  1013. bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
  1014. depends on JFFS2_FS
  1015. default y
  1016. help
  1017. Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
  1018. config JFFS2_RUBIN
  1019. bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
  1020. depends on JFFS2_FS
  1021. default n
  1022. help
  1023. RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
  1024. choice
  1025. prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
  1026. default JFFS2_CMODE_PRIORITY
  1027. depends on JFFS2_FS
  1028. help
  1029. You can set here the default compression mode of JFFS2 from
  1030. the available compression modes. Don't touch if unsure.
  1031. config JFFS2_CMODE_NONE
  1032. bool "no compression"
  1033. help
  1034. Uses no compression.
  1035. config JFFS2_CMODE_PRIORITY
  1036. bool "priority"
  1037. help
  1038. Tries the compressors in a predefinied order and chooses the first
  1039. successful one.
  1040. config JFFS2_CMODE_SIZE
  1041. bool "size (EXPERIMENTAL)"
  1042. help
  1043. Tries all compressors and chooses the one which has the smallest
  1044. result.
  1045. endchoice
  1046. config CRAMFS
  1047. tristate "Compressed ROM file system support (cramfs)"
  1048. depends on BLOCK
  1049. select ZLIB_INFLATE
  1050. help
  1051. Saying Y here includes support for CramFs (Compressed ROM File
  1052. System). CramFs is designed to be a simple, small, and compressed
  1053. file system for ROM based embedded systems. CramFs is read-only,
  1054. limited to 256MB file systems (with 16MB files), and doesn't support
  1055. 16/32 bits uid/gid, hard links and timestamps.
  1056. See <file:Documentation/filesystems/cramfs.txt> and
  1057. <file:fs/cramfs/README> for further information.
  1058. To compile this as a module, choose M here: the module will be called
  1059. cramfs. Note that the root file system (the one containing the
  1060. directory /) cannot be compiled as a module.
  1061. If unsure, say N.
  1062. config VXFS_FS
  1063. tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
  1064. depends on BLOCK
  1065. help
  1066. FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
  1067. file system format. VERITAS VxFS(TM) is the standard file system
  1068. of SCO UnixWare (and possibly others) and optionally available
  1069. for Sunsoft Solaris, HP-UX and many other operating systems.
  1070. Currently only readonly access is supported.
  1071. NOTE: the file system type as used by mount(1), mount(2) and
  1072. fstab(5) is 'vxfs' as it describes the file system format, not
  1073. the actual driver.
  1074. To compile this as a module, choose M here: the module will be
  1075. called freevxfs. If unsure, say N.
  1076. config HPFS_FS
  1077. tristate "OS/2 HPFS file system support"
  1078. depends on BLOCK
  1079. help
  1080. OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  1081. is the file system used for organizing files on OS/2 hard disk
  1082. partitions. Say Y if you want to be able to read files from and
  1083. write files to an OS/2 HPFS partition on your hard drive. OS/2
  1084. floppies however are in regular MSDOS format, so you don't need this
  1085. option in order to be able to read them. Read
  1086. <file:Documentation/filesystems/hpfs.txt>.
  1087. To compile this file system support as a module, choose M here: the
  1088. module will be called hpfs. If unsure, say N.
  1089. config QNX4FS_FS
  1090. tristate "QNX4 file system support (read only)"
  1091. depends on BLOCK
  1092. help
  1093. This is the file system used by the real-time operating systems
  1094. QNX 4 and QNX 6 (the latter is also called QNX RTP).
  1095. Further information is available at <http://www.qnx.com/>.
  1096. Say Y if you intend to mount QNX hard disks or floppies.
  1097. Unless you say Y to "QNX4FS read-write support" below, you will
  1098. only be able to read these file systems.
  1099. To compile this file system support as a module, choose M here: the
  1100. module will be called qnx4.
  1101. If you don't know whether you need it, then you don't need it:
  1102. answer N.
  1103. config QNX4FS_RW
  1104. bool "QNX4FS write support (DANGEROUS)"
  1105. depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
  1106. help
  1107. Say Y if you want to test write support for QNX4 file systems.
  1108. It's currently broken, so for now:
  1109. answer N.
  1110. config SYSV_FS
  1111. tristate "System V/Xenix/V7/Coherent file system support"
  1112. depends on BLOCK
  1113. help
  1114. SCO, Xenix and Coherent are commercial Unix systems for Intel
  1115. machines, and Version 7 was used on the DEC PDP-11. Saying Y
  1116. here would allow you to read from their floppies and hard disk
  1117. partitions.
  1118. If you have floppies or hard disk partitions like that, it is likely
  1119. that they contain binaries from those other Unix systems; in order
  1120. to run these binaries, you will want to install linux-abi which is a
  1121. a set of kernel modules that lets you run SCO, Xenix, Wyse,
  1122. UnixWare, Dell Unix and System V programs under Linux. It is
  1123. available via FTP (user: ftp) from
  1124. <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
  1125. NOTE: that will work only for binaries from Intel-based systems;
  1126. PDP ones will have to wait until somebody ports Linux to -11 ;-)
  1127. If you only intend to mount files from some other Unix over the
  1128. network using NFS, you don't need the System V file system support
  1129. (but you need NFS file system support obviously).
  1130. Note that this option is generally not needed for floppies, since a
  1131. good portable way to transport files and directories between unixes
  1132. (and even other operating systems) is given by the tar program ("man
  1133. tar" or preferably "info tar"). Note also that this option has
  1134. nothing whatsoever to do with the option "System V IPC". Read about
  1135. the System V file system in
  1136. <file:Documentation/filesystems/sysv-fs.txt>.
  1137. Saying Y here will enlarge your kernel by about 27 KB.
  1138. To compile this as a module, choose M here: the module will be called
  1139. sysv.
  1140. If you haven't heard about all of this before, it's safe to say N.
  1141. config UFS_FS
  1142. tristate "UFS file system support (read only)"
  1143. depends on BLOCK
  1144. help
  1145. BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
  1146. OpenBSD and NeXTstep) use a file system called UFS. Some System V
  1147. Unixes can create and mount hard disk partitions and diskettes using
  1148. this file system as well. Saying Y here will allow you to read from
  1149. these partitions; if you also want to write to them, say Y to the
  1150. experimental "UFS file system write support", below. Please read the
  1151. file <file:Documentation/filesystems/ufs.txt> for more information.
  1152. The recently released UFS2 variant (used in FreeBSD 5.x) is
  1153. READ-ONLY supported.
  1154. If you only intend to mount files from some other Unix over the
  1155. network using NFS, you don't need the UFS file system support (but
  1156. you need NFS file system support obviously).
  1157. Note that this option is generally not needed for floppies, since a
  1158. good portable way to transport files and directories between unixes
  1159. (and even other operating systems) is given by the tar program ("man
  1160. tar" or preferably "info tar").
  1161. When accessing NeXTstep files, you may need to convert them from the
  1162. NeXT character set to the Latin1 character set; use the program
  1163. recode ("info recode") for this purpose.
  1164. To compile the UFS file system support as a module, choose M here: the
  1165. module will be called ufs.
  1166. If you haven't heard about all of this before, it's safe to say N.
  1167. config UFS_FS_WRITE
  1168. bool "UFS file system write support (DANGEROUS)"
  1169. depends on UFS_FS && EXPERIMENTAL
  1170. help
  1171. Say Y here if you want to try writing to UFS partitions. This is
  1172. experimental, so you should back up your UFS partitions beforehand.
  1173. config UFS_DEBUG
  1174. bool "UFS debugging"
  1175. depends on UFS_FS
  1176. help
  1177. If you are experiencing any problems with the UFS filesystem, say
  1178. Y here. This will result in _many_ additional debugging messages to be
  1179. written to the system log.
  1180. endmenu
  1181. menu "Network File Systems"
  1182. depends on NET
  1183. config NFS_FS
  1184. tristate "NFS file system support"
  1185. depends on INET
  1186. select LOCKD
  1187. select SUNRPC
  1188. select NFS_ACL_SUPPORT if NFS_V3_ACL
  1189. help
  1190. If you are connected to some other (usually local) Unix computer
  1191. (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
  1192. on that computer (the NFS server) using the Network File Sharing
  1193. protocol, say Y. "Mounting files" means that the client can access
  1194. the files with usual UNIX commands as if they were sitting on the
  1195. client's hard disk. For this to work, the server must run the
  1196. programs nfsd and mountd (but does not need to have NFS file system
  1197. support enabled in its kernel). NFS is explained in the Network
  1198. Administrator's Guide, available from
  1199. <http://www.tldp.org/docs.html#guide>, on its man page: "man
  1200. nfs", and in the NFS-HOWTO.
  1201. A superior but less widely used alternative to NFS is provided by
  1202. the Coda file system; see "Coda file system support" below.
  1203. If you say Y here, you should have said Y to TCP/IP networking also.
  1204. This option would enlarge your kernel by about 27 KB.
  1205. To compile this file system support as a module, choose M here: the
  1206. module will be called nfs.
  1207. If you are configuring a diskless machine which will mount its root
  1208. file system over NFS at boot time, say Y here and to "Kernel
  1209. level IP autoconfiguration" above and to "Root file system on NFS"
  1210. below. You cannot compile this driver as a module in this case.
  1211. There are two packages designed for booting diskless machines over
  1212. the net: netboot, available from
  1213. <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
  1214. available from <http://ftp1.sourceforge.net/etherboot/>.
  1215. If you don't know what all this is about, say N.
  1216. config NFS_V3
  1217. bool "Provide NFSv3 client support"
  1218. depends on NFS_FS
  1219. help
  1220. Say Y here if you want your NFS client to be able to speak version
  1221. 3 of the NFS protocol.
  1222. If unsure, say Y.
  1223. config NFS_V3_ACL
  1224. bool "Provide client support for the NFSv3 ACL protocol extension"
  1225. depends on NFS_V3
  1226. help
  1227. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1228. Access Control Lists. The server should also be compiled with
  1229. the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
  1230. If unsure, say N.
  1231. config NFS_V4
  1232. bool "Provide NFSv4 client support (EXPERIMENTAL)"
  1233. depends on NFS_FS && EXPERIMENTAL
  1234. select RPCSEC_GSS_KRB5
  1235. help
  1236. Say Y here if you want your NFS client to be able to speak the newer
  1237. version 4 of the NFS protocol.
  1238. Note: Requires auxiliary userspace daemons which may be found on
  1239. http://www.citi.umich.edu/projects/nfsv4/
  1240. If unsure, say N.
  1241. config NFS_DIRECTIO
  1242. bool "Allow direct I/O on NFS files"
  1243. depends on NFS_FS
  1244. help
  1245. This option enables applications to perform uncached I/O on files
  1246. in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
  1247. is set for a file, its data is not cached in the system's page
  1248. cache. Data is moved to and from user-level application buffers
  1249. directly. Unlike local disk-based file systems, NFS O_DIRECT has
  1250. no alignment restrictions.
  1251. Unless your program is designed to use O_DIRECT properly, you are
  1252. much better off allowing the NFS client to manage data caching for
  1253. you. Misusing O_DIRECT can cause poor server performance or network
  1254. storms. This kernel build option defaults OFF to avoid exposing
  1255. system administrators unwittingly to a potentially hazardous
  1256. feature.
  1257. For more details on NFS O_DIRECT, see fs/nfs/direct.c.
  1258. If unsure, say N. This reduces the size of the NFS client, and
  1259. causes open() to return EINVAL if a file residing in NFS is
  1260. opened with the O_DIRECT flag.
  1261. config NFSD
  1262. tristate "NFS server support"
  1263. depends on INET
  1264. select LOCKD
  1265. select SUNRPC
  1266. select EXPORTFS
  1267. select NFSD_V2_ACL if NFSD_V3_ACL
  1268. select NFS_ACL_SUPPORT if NFSD_V2_ACL
  1269. select NFSD_TCP if NFSD_V4
  1270. select CRYPTO_MD5 if NFSD_V4
  1271. select CRYPTO if NFSD_V4
  1272. select FS_POSIX_ACL if NFSD_V4
  1273. help
  1274. If you want your Linux box to act as an NFS *server*, so that other
  1275. computers on your local network which support NFS can access certain
  1276. directories on your box transparently, you have two options: you can
  1277. use the self-contained user space program nfsd, in which case you
  1278. should say N here, or you can say Y and use the kernel based NFS
  1279. server. The advantage of the kernel based solution is that it is
  1280. faster.
  1281. In either case, you will need support software; the respective
  1282. locations are given in the file <file:Documentation/Changes> in the
  1283. NFS section.
  1284. If you say Y here, you will get support for version 2 of the NFS
  1285. protocol (NFSv2). If you also want NFSv3, say Y to the next question
  1286. as well.
  1287. Please read the NFS-HOWTO, available from
  1288. <http://www.tldp.org/docs.html#howto>.
  1289. To compile the NFS server support as a module, choose M here: the
  1290. module will be called nfsd. If unsure, say N.
  1291. config NFSD_V2_ACL
  1292. bool
  1293. depends on NFSD
  1294. config NFSD_V3
  1295. bool "Provide NFSv3 server support"
  1296. depends on NFSD
  1297. help
  1298. If you would like to include the NFSv3 server as well as the NFSv2
  1299. server, say Y here. If unsure, say Y.
  1300. config NFSD_V3_ACL
  1301. bool "Provide server support for the NFSv3 ACL protocol extension"
  1302. depends on NFSD_V3
  1303. help
  1304. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1305. Access Control Lists on exported file systems. NFS clients should
  1306. be compiled with the NFSv3 ACL protocol extension; see the
  1307. CONFIG_NFS_V3_ACL option. If unsure, say N.
  1308. config NFSD_V4
  1309. bool "Provide NFSv4 server support (EXPERIMENTAL)"
  1310. depends on NFSD_V3 && EXPERIMENTAL
  1311. help
  1312. If you would like to include the NFSv4 server as well as the NFSv2
  1313. and NFSv3 servers, say Y here. This feature is experimental, and
  1314. should only be used if you are interested in helping to test NFSv4.
  1315. If unsure, say N.
  1316. config NFSD_TCP
  1317. bool "Provide NFS server over TCP support"
  1318. depends on NFSD
  1319. default y
  1320. help
  1321. If you want your NFS server to support TCP connections, say Y here.
  1322. TCP connections usually perform better than the default UDP when
  1323. the network is lossy or congested. If unsure, say Y.
  1324. config ROOT_NFS
  1325. bool "Root file system on NFS"
  1326. depends on NFS_FS=y && IP_PNP
  1327. help
  1328. If you want your Linux box to mount its whole root file system (the
  1329. one containing the directory /) from some other computer over the
  1330. net via NFS (presumably because your box doesn't have a hard disk),
  1331. say Y. Read <file:Documentation/nfsroot.txt> for details. It is
  1332. likely that in this case, you also want to say Y to "Kernel level IP
  1333. autoconfiguration" so that your box can discover its network address
  1334. at boot time.
  1335. Most people say N here.
  1336. config LOCKD
  1337. tristate
  1338. config LOCKD_V4
  1339. bool
  1340. depends on NFSD_V3 || NFS_V3
  1341. default y
  1342. config EXPORTFS
  1343. tristate
  1344. config NFS_ACL_SUPPORT
  1345. tristate
  1346. select FS_POSIX_ACL
  1347. config NFS_COMMON
  1348. bool
  1349. depends on NFSD || NFS_FS
  1350. default y
  1351. config SUNRPC
  1352. tristate
  1353. config SUNRPC_GSS
  1354. tristate
  1355. config RPCSEC_GSS_KRB5
  1356. tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
  1357. depends on SUNRPC && EXPERIMENTAL
  1358. select SUNRPC_GSS
  1359. select CRYPTO
  1360. select CRYPTO_MD5
  1361. select CRYPTO_DES
  1362. help
  1363. Provides for secure RPC calls by means of a gss-api
  1364. mechanism based on Kerberos V5. This is required for
  1365. NFSv4.
  1366. Note: Requires an auxiliary userspace daemon which may be found on
  1367. http://www.citi.umich.edu/projects/nfsv4/
  1368. If unsure, say N.
  1369. config RPCSEC_GSS_SPKM3
  1370. tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
  1371. depends on SUNRPC && EXPERIMENTAL
  1372. select SUNRPC_GSS
  1373. select CRYPTO
  1374. select CRYPTO_MD5
  1375. select CRYPTO_DES
  1376. select CRYPTO_CAST5
  1377. help
  1378. Provides for secure RPC calls by means of a gss-api
  1379. mechanism based on the SPKM3 public-key mechanism.
  1380. Note: Requires an auxiliary userspace daemon which may be found on
  1381. http://www.citi.umich.edu/projects/nfsv4/
  1382. If unsure, say N.
  1383. config SMB_FS
  1384. tristate "SMB file system support (to mount Windows shares etc.)"
  1385. depends on INET
  1386. select NLS
  1387. help
  1388. SMB (Server Message Block) is the protocol Windows for Workgroups
  1389. (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
  1390. files and printers over local networks. Saying Y here allows you to
  1391. mount their file systems (often called "shares" in this context) and
  1392. access them just like any other Unix directory. Currently, this
  1393. works only if the Windows machines use TCP/IP as the underlying
  1394. transport protocol, and not NetBEUI. For details, read
  1395. <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
  1396. available from <http://www.tldp.org/docs.html#howto>.
  1397. Note: if you just want your box to act as an SMB *server* and make
  1398. files and printing services available to Windows clients (which need
  1399. to have a TCP/IP stack), you don't need to say Y here; you can use
  1400. the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
  1401. for that.
  1402. General information about how to connect Linux, Windows machines and
  1403. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1404. To compile the SMB support as a module, choose M here: the module will
  1405. be called smbfs. Most people say N, however.
  1406. config SMB_NLS_DEFAULT
  1407. bool "Use a default NLS"
  1408. depends on SMB_FS
  1409. help
  1410. Enabling this will make smbfs use nls translations by default. You
  1411. need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
  1412. settings and you need to give the default nls for the SMB server as
  1413. CONFIG_SMB_NLS_REMOTE.
  1414. The nls settings can be changed at mount time, if your smbmount
  1415. supports that, using the codepage and iocharset parameters.
  1416. smbmount from samba 2.2.0 or later supports this.
  1417. config SMB_NLS_REMOTE
  1418. string "Default Remote NLS Option"
  1419. depends on SMB_NLS_DEFAULT
  1420. default "cp437"
  1421. help
  1422. This setting allows you to specify a default value for which
  1423. codepage the server uses. If this field is left blank no
  1424. translations will be done by default. The local codepage/charset
  1425. default to CONFIG_NLS_DEFAULT.
  1426. The nls settings can be changed at mount time, if your smbmount
  1427. supports that, using the codepage and iocharset parameters.
  1428. smbmount from samba 2.2.0 or later supports this.
  1429. config CIFS
  1430. tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
  1431. depends on INET
  1432. select NLS
  1433. help
  1434. This is the client VFS module for the Common Internet File System
  1435. (CIFS) protocol which is the successor to the Server Message Block
  1436. (SMB) protocol, the native file sharing mechanism for most early
  1437. PC operating systems. The CIFS protocol is fully supported by
  1438. file servers such as Windows 2000 (including Windows 2003, NT 4
  1439. and Windows XP) as well by Samba (which provides excellent CIFS
  1440. server support for Linux and many other operating systems). Limited
  1441. support for Windows ME and similar servers is provided as well.
  1442. You must use the smbfs client filesystem to access older SMB servers
  1443. such as OS/2 and DOS.
  1444. The intent of the cifs module is to provide an advanced
  1445. network file system client for mounting to CIFS compliant servers,
  1446. including support for dfs (hierarchical name space), secure per-user
  1447. session establishment, safe distributed caching (oplock), optional
  1448. packet signing, Unicode and other internationalization improvements,
  1449. and optional Winbind (nsswitch) integration. You do not need to enable
  1450. cifs if running only a (Samba) server. It is possible to enable both
  1451. smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
  1452. and Samba 3 servers, and smbfs for accessing old servers). If you need
  1453. to mount to Samba or Windows from this machine, say Y.
  1454. config CIFS_STATS
  1455. bool "CIFS statistics"
  1456. depends on CIFS
  1457. help
  1458. Enabling this option will cause statistics for each server share
  1459. mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
  1460. config CIFS_STATS2
  1461. bool "Extended statistics"
  1462. depends on CIFS_STATS
  1463. help
  1464. Enabling this option will allow more detailed statistics on SMB
  1465. request timing to be displayed in /proc/fs/cifs/DebugData and also
  1466. allow optional logging of slow responses to dmesg (depending on the
  1467. value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
  1468. These additional statistics may have a minor effect on performance
  1469. and memory utilization.
  1470. Unless you are a developer or are doing network performance analysis
  1471. or tuning, say N.
  1472. config CIFS_WEAK_PW_HASH
  1473. bool "Support legacy servers which use weaker LANMAN security"
  1474. depends on CIFS
  1475. help
  1476. Modern CIFS servers including Samba and most Windows versions
  1477. (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
  1478. security mechanisms. These hash the password more securely
  1479. than the mechanisms used in the older LANMAN version of the
  1480. SMB protocol needed to establish sessions with old SMB servers.
  1481. Enabling this option allows the cifs module to mount to older
  1482. LANMAN based servers such as OS/2 and Windows 95, but such
  1483. mounts may be less secure than mounts using NTLM or more recent
  1484. security mechanisms if you are on a public network. Unless you
  1485. have a need to access old SMB servers (and are on a private
  1486. network) you probably want to say N. Even if this support
  1487. is enabled in the kernel build, they will not be used
  1488. automatically. At runtime LANMAN mounts are disabled but
  1489. can be set to required (or optional) either in
  1490. /proc/fs/cifs (see fs/cifs/README for more detail) or via an
  1491. option on the mount command. This support is disabled by
  1492. default in order to reduce the possibility of a downgrade
  1493. attack.
  1494. If unsure, say N.
  1495. config CIFS_XATTR
  1496. bool "CIFS extended attributes"
  1497. depends on CIFS
  1498. help
  1499. Extended attributes are name:value pairs associated with inodes by
  1500. the kernel or by users (see the attr(5) manual page, or visit
  1501. <http://acl.bestbits.at/> for details). CIFS maps the name of
  1502. extended attributes beginning with the user namespace prefix
  1503. to SMB/CIFS EAs. EAs are stored on Windows servers without the
  1504. user namespace prefix, but their names are seen by Linux cifs clients
  1505. prefaced by the user namespace prefix. The system namespace
  1506. (used by some filesystems to store ACLs) is not supported at
  1507. this time.
  1508. If unsure, say N.
  1509. config CIFS_POSIX
  1510. bool "CIFS POSIX Extensions"
  1511. depends on CIFS_XATTR
  1512. help
  1513. Enabling this option will cause the cifs client to attempt to
  1514. negotiate a newer dialect with servers, such as Samba 3.0.5
  1515. or later, that optionally can handle more POSIX like (rather
  1516. than Windows like) file behavior. It also enables
  1517. support for POSIX ACLs (getfacl and setfacl) to servers
  1518. (such as Samba 3.10 and later) which can negotiate
  1519. CIFS POSIX ACL support. If unsure, say N.
  1520. config CIFS_DEBUG2
  1521. bool "Enable additional CIFS debugging routines"
  1522. depends on CIFS
  1523. help
  1524. Enabling this option adds a few more debugging routines
  1525. to the cifs code which slightly increases the size of
  1526. the cifs module and can cause additional logging of debug
  1527. messages in some error paths, slowing performance. This
  1528. option can be turned off unless you are debugging
  1529. cifs problems. If unsure, say N.
  1530. config CIFS_EXPERIMENTAL
  1531. bool "CIFS Experimental Features (EXPERIMENTAL)"
  1532. depends on CIFS && EXPERIMENTAL
  1533. help
  1534. Enables cifs features under testing. These features are
  1535. experimental and currently include support for writepages
  1536. (multipage writebehind performance improvements) and directory
  1537. change notification ie fcntl(F_DNOTIFY) as well as some security
  1538. improvements. Some also depend on setting at runtime the
  1539. pseudo-file /proc/fs/cifs/Experimental (which is disabled by
  1540. default). See the file fs/cifs/README for more details.
  1541. If unsure, say N.
  1542. config CIFS_UPCALL
  1543. bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
  1544. depends on CIFS_EXPERIMENTAL
  1545. select CONNECTOR
  1546. help
  1547. Enables an upcall mechanism for CIFS which will be used to contact
  1548. userspace helper utilities to provide SPNEGO packaged Kerberos
  1549. tickets which are needed to mount to certain secure servers
  1550. (for which more secure Kerberos authentication is required). If
  1551. unsure, say N.
  1552. config NCP_FS
  1553. tristate "NCP file system support (to mount NetWare volumes)"
  1554. depends on IPX!=n || INET
  1555. help
  1556. NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  1557. used by Novell NetWare clients to talk to file servers. It is to
  1558. IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
  1559. to mount NetWare file server volumes and to access them just like
  1560. any other Unix directory. For details, please read the file
  1561. <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
  1562. the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
  1563. You do not have to say Y here if you want your Linux box to act as a
  1564. file *server* for Novell NetWare clients.
  1565. General information about how to connect Linux, Windows machines and
  1566. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1567. To compile this as a module, choose M here: the module will be called
  1568. ncpfs. Say N unless you are connected to a Novell network.
  1569. source "fs/ncpfs/Kconfig"
  1570. config CODA_FS
  1571. tristate "Coda file system support (advanced network fs)"
  1572. depends on INET
  1573. help
  1574. Coda is an advanced network file system, similar to NFS in that it
  1575. enables you to mount file systems of a remote server and access them
  1576. with regular Unix commands as if they were sitting on your hard
  1577. disk. Coda has several advantages over NFS: support for
  1578. disconnected operation (e.g. for laptops), read/write server
  1579. replication, security model for authentication and encryption,
  1580. persistent client caches and write back caching.
  1581. If you say Y here, your Linux box will be able to act as a Coda
  1582. *client*. You will need user level code as well, both for the
  1583. client and server. Servers are currently user level, i.e. they need
  1584. no kernel support. Please read
  1585. <file:Documentation/filesystems/coda.txt> and check out the Coda
  1586. home page <http://www.coda.cs.cmu.edu/>.
  1587. To compile the coda client support as a module, choose M here: the
  1588. module will be called coda.
  1589. config CODA_FS_OLD_API
  1590. bool "Use 96-bit Coda file identifiers"
  1591. depends on CODA_FS
  1592. help
  1593. A new kernel-userspace API had to be introduced for Coda v6.0
  1594. to support larger 128-bit file identifiers as needed by the
  1595. new realms implementation.
  1596. However this new API is not backward compatible with older
  1597. clients. If you really need to run the old Coda userspace
  1598. cache manager then say Y.
  1599. For most cases you probably want to say N.
  1600. config AFS_FS
  1601. # for fs/nls/Config.in
  1602. tristate "Andrew File System support (AFS) (Experimental)"
  1603. depends on INET && EXPERIMENTAL
  1604. select RXRPC
  1605. help
  1606. If you say Y here, you will get an experimental Andrew File System
  1607. driver. It currently only supports unsecured read-only AFS access.
  1608. See <file:Documentation/filesystems/afs.txt> for more intormation.
  1609. If unsure, say N.
  1610. config RXRPC
  1611. tristate
  1612. config 9P_FS
  1613. tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
  1614. depends on INET && EXPERIMENTAL
  1615. help
  1616. If you say Y here, you will get experimental support for
  1617. Plan 9 resource sharing via the 9P2000 protocol.
  1618. See <http://v9fs.sf.net> for more information.
  1619. If unsure, say N.
  1620. config GENERIC_ACL
  1621. bool
  1622. select FS_POSIX_ACL
  1623. endmenu
  1624. if BLOCK
  1625. menu "Partition Types"
  1626. source "fs/partitions/Kconfig"
  1627. endmenu
  1628. endif
  1629. source "fs/nls/Kconfig"
  1630. endmenu