Kconfig 63 KB

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  1. #
  2. # File system configuration
  3. #
  4. menu "File systems"
  5. config EXT2_FS
  6. tristate "Second extended fs support"
  7. help
  8. Ext2 is a standard Linux file system for hard disks.
  9. To compile this file system support as a module, choose M here: the
  10. module will be called ext2. Be aware however that the file system
  11. of your root partition (the one containing the directory /) cannot
  12. be compiled as a module, and so this could be dangerous.
  13. If unsure, say Y.
  14. config EXT2_FS_XATTR
  15. bool "Ext2 extended attributes"
  16. depends on EXT2_FS
  17. help
  18. Extended attributes are name:value pairs associated with inodes by
  19. the kernel or by users (see the attr(5) manual page, or visit
  20. <http://acl.bestbits.at/> for details).
  21. If unsure, say N.
  22. config EXT2_FS_POSIX_ACL
  23. bool "Ext2 POSIX Access Control Lists"
  24. depends on EXT2_FS_XATTR
  25. help
  26. Posix Access Control Lists (ACLs) support permissions for users and
  27. groups beyond the owner/group/world scheme.
  28. To learn more about Access Control Lists, visit the Posix ACLs for
  29. Linux website <http://acl.bestbits.at/>.
  30. If you don't know what Access Control Lists are, say N
  31. config EXT2_FS_SECURITY
  32. bool "Ext2 Security Labels"
  33. depends on EXT2_FS_XATTR
  34. help
  35. Security labels support alternative access control models
  36. implemented by security modules like SELinux. This option
  37. enables an extended attribute handler for file security
  38. labels in the ext2 filesystem.
  39. If you are not using a security module that requires using
  40. extended attributes for file security labels, say N.
  41. config EXT2_FS_XIP
  42. bool "Ext2 execute in place support"
  43. depends on EXT2_FS
  44. help
  45. Execute in place can be used on memory-backed block devices. If you
  46. enable this option, you can select to mount block devices which are
  47. capable of this feature without using the page cache.
  48. If you do not use a block device that is capable of using this,
  49. or if unsure, say N.
  50. config FS_XIP
  51. # execute in place
  52. bool
  53. depends on EXT2_FS_XIP
  54. default y
  55. config EXT3_FS
  56. tristate "Ext3 journalling file system support"
  57. help
  58. This is the journaling version of the Second extended file system
  59. (often called ext3), the de facto standard Linux file system
  60. (method to organize files on a storage device) for hard disks.
  61. The journaling code included in this driver means you do not have
  62. to run e2fsck (file system checker) on your file systems after a
  63. crash. The journal keeps track of any changes that were being made
  64. at the time the system crashed, and can ensure that your file system
  65. is consistent without the need for a lengthy check.
  66. Other than adding the journal to the file system, the on-disk format
  67. of ext3 is identical to ext2. It is possible to freely switch
  68. between using the ext3 driver and the ext2 driver, as long as the
  69. file system has been cleanly unmounted, or e2fsck is run on the file
  70. system.
  71. To add a journal on an existing ext2 file system or change the
  72. behavior of ext3 file systems, you can use the tune2fs utility ("man
  73. tune2fs"). To modify attributes of files and directories on ext3
  74. file systems, use chattr ("man chattr"). You need to be using
  75. e2fsprogs version 1.20 or later in order to create ext3 journals
  76. (available at <http://sourceforge.net/projects/e2fsprogs/>).
  77. To compile this file system support as a module, choose M here: the
  78. module will be called ext3. Be aware however that the file system
  79. of your root partition (the one containing the directory /) cannot
  80. be compiled as a module, and so this may be dangerous.
  81. config EXT3_FS_XATTR
  82. bool "Ext3 extended attributes"
  83. depends on EXT3_FS
  84. default y
  85. help
  86. Extended attributes are name:value pairs associated with inodes by
  87. the kernel or by users (see the attr(5) manual page, or visit
  88. <http://acl.bestbits.at/> for details).
  89. If unsure, say N.
  90. You need this for POSIX ACL support on ext3.
  91. config EXT3_FS_POSIX_ACL
  92. bool "Ext3 POSIX Access Control Lists"
  93. depends on EXT3_FS_XATTR
  94. help
  95. Posix Access Control Lists (ACLs) support permissions for users and
  96. groups beyond the owner/group/world scheme.
  97. To learn more about Access Control Lists, visit the Posix ACLs for
  98. Linux website <http://acl.bestbits.at/>.
  99. If you don't know what Access Control Lists are, say N
  100. config EXT3_FS_SECURITY
  101. bool "Ext3 Security Labels"
  102. depends on EXT3_FS_XATTR
  103. help
  104. Security labels support alternative access control models
  105. implemented by security modules like SELinux. This option
  106. enables an extended attribute handler for file security
  107. labels in the ext3 filesystem.
  108. If you are not using a security module that requires using
  109. extended attributes for file security labels, say N.
  110. config JBD
  111. # CONFIG_JBD could be its own option (even modular), but until there are
  112. # other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
  113. # dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
  114. tristate
  115. default EXT3_FS
  116. help
  117. This is a generic journaling layer for block devices. It is
  118. currently used by the ext3 file system, but it could also be used to
  119. add journal support to other file systems or block devices such as
  120. RAID or LVM.
  121. If you are using the ext3 file system, you need to say Y here. If
  122. you are not using ext3 then you will probably want to say N.
  123. To compile this device as a module, choose M here: the module will be
  124. called jbd. If you are compiling ext3 into the kernel, you cannot
  125. compile this code as a module.
  126. config JBD_DEBUG
  127. bool "JBD (ext3) debugging support"
  128. depends on JBD
  129. help
  130. If you are using the ext3 journaled file system (or potentially any
  131. other file system/device using JBD), this option allows you to
  132. enable debugging output while the system is running, in order to
  133. help track down any problems you are having. By default the
  134. debugging output will be turned off.
  135. If you select Y here, then you will be able to turn on debugging
  136. with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
  137. 1 and 5, the higher the number, the more debugging output is
  138. generated. To turn debugging off again, do
  139. "echo 0 > /proc/sys/fs/jbd-debug".
  140. config FS_MBCACHE
  141. # Meta block cache for Extended Attributes (ext2/ext3)
  142. tristate
  143. depends on EXT2_FS_XATTR || EXT3_FS_XATTR
  144. default y if EXT2_FS=y || EXT3_FS=y
  145. default m if EXT2_FS=m || EXT3_FS=m
  146. config REISERFS_FS
  147. tristate "Reiserfs support"
  148. help
  149. Stores not just filenames but the files themselves in a balanced
  150. tree. Uses journaling.
  151. Balanced trees are more efficient than traditional file system
  152. architectural foundations.
  153. In general, ReiserFS is as fast as ext2, but is very efficient with
  154. large directories and small files. Additional patches are needed
  155. for NFS and quotas, please see <http://www.namesys.com/> for links.
  156. It is more easily extended to have features currently found in
  157. database and keyword search systems than block allocation based file
  158. systems are. The next version will be so extended, and will support
  159. plugins consistent with our motto ``It takes more than a license to
  160. make source code open.''
  161. Read <http://www.namesys.com/> to learn more about reiserfs.
  162. Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
  163. If you like it, you can pay us to add new features to it that you
  164. need, buy a support contract, or pay us to port it to another OS.
  165. config REISERFS_CHECK
  166. bool "Enable reiserfs debug mode"
  167. depends on REISERFS_FS
  168. help
  169. If you set this to Y, then ReiserFS will perform every check it can
  170. possibly imagine of its internal consistency throughout its
  171. operation. It will also go substantially slower. More than once we
  172. have forgotten that this was on, and then gone despondent over the
  173. latest benchmarks.:-) Use of this option allows our team to go all
  174. out in checking for consistency when debugging without fear of its
  175. effect on end users. If you are on the verge of sending in a bug
  176. report, say Y and you might get a useful error message. Almost
  177. everyone should say N.
  178. config REISERFS_PROC_INFO
  179. bool "Stats in /proc/fs/reiserfs"
  180. depends on REISERFS_FS
  181. help
  182. Create under /proc/fs/reiserfs a hierarchy of files, displaying
  183. various ReiserFS statistics and internal data at the expense of
  184. making your kernel or module slightly larger (+8 KB). This also
  185. increases the amount of kernel memory required for each mount.
  186. Almost everyone but ReiserFS developers and people fine-tuning
  187. reiserfs or tracing problems should say N.
  188. config REISERFS_FS_XATTR
  189. bool "ReiserFS extended attributes"
  190. depends on REISERFS_FS
  191. help
  192. Extended attributes are name:value pairs associated with inodes by
  193. the kernel or by users (see the attr(5) manual page, or visit
  194. <http://acl.bestbits.at/> for details).
  195. If unsure, say N.
  196. config REISERFS_FS_POSIX_ACL
  197. bool "ReiserFS POSIX Access Control Lists"
  198. depends on REISERFS_FS_XATTR
  199. help
  200. Posix Access Control Lists (ACLs) support permissions for users and
  201. groups beyond the owner/group/world scheme.
  202. To learn more about Access Control Lists, visit the Posix ACLs for
  203. Linux website <http://acl.bestbits.at/>.
  204. If you don't know what Access Control Lists are, say N
  205. config REISERFS_FS_SECURITY
  206. bool "ReiserFS Security Labels"
  207. depends on REISERFS_FS_XATTR
  208. help
  209. Security labels support alternative access control models
  210. implemented by security modules like SELinux. This option
  211. enables an extended attribute handler for file security
  212. labels in the ReiserFS filesystem.
  213. If you are not using a security module that requires using
  214. extended attributes for file security labels, say N.
  215. config JFS_FS
  216. tristate "JFS filesystem support"
  217. select NLS
  218. help
  219. This is a port of IBM's Journaled Filesystem . More information is
  220. available in the file <file:Documentation/filesystems/jfs.txt>.
  221. If you do not intend to use the JFS filesystem, say N.
  222. config JFS_POSIX_ACL
  223. bool "JFS POSIX Access Control Lists"
  224. depends on JFS_FS
  225. help
  226. Posix Access Control Lists (ACLs) support permissions for users and
  227. groups beyond the owner/group/world scheme.
  228. To learn more about Access Control Lists, visit the Posix ACLs for
  229. Linux website <http://acl.bestbits.at/>.
  230. If you don't know what Access Control Lists are, say N
  231. config JFS_SECURITY
  232. bool "JFS Security Labels"
  233. depends on JFS_FS
  234. help
  235. Security labels support alternative access control models
  236. implemented by security modules like SELinux. This option
  237. enables an extended attribute handler for file security
  238. labels in the jfs filesystem.
  239. If you are not using a security module that requires using
  240. extended attributes for file security labels, say N.
  241. config JFS_DEBUG
  242. bool "JFS debugging"
  243. depends on JFS_FS
  244. help
  245. If you are experiencing any problems with the JFS filesystem, say
  246. Y here. This will result in additional debugging messages to be
  247. written to the system log. Under normal circumstances, this
  248. results in very little overhead.
  249. config JFS_STATISTICS
  250. bool "JFS statistics"
  251. depends on JFS_FS
  252. help
  253. Enabling this option will cause statistics from the JFS file system
  254. to be made available to the user in the /proc/fs/jfs/ directory.
  255. config FS_POSIX_ACL
  256. # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
  257. #
  258. # NOTE: you can implement Posix ACLs without these helpers (XFS does).
  259. # Never use this symbol for ifdefs.
  260. #
  261. bool
  262. depends on EXT2_FS_POSIX_ACL || EXT3_FS_POSIX_ACL || JFS_POSIX_ACL || REISERFS_FS_POSIX_ACL || NFSD_V4
  263. default y
  264. source "fs/xfs/Kconfig"
  265. config MINIX_FS
  266. tristate "Minix fs support"
  267. help
  268. Minix is a simple operating system used in many classes about OS's.
  269. The minix file system (method to organize files on a hard disk
  270. partition or a floppy disk) was the original file system for Linux,
  271. but has been superseded by the second extended file system ext2fs.
  272. You don't want to use the minix file system on your hard disk
  273. because of certain built-in restrictions, but it is sometimes found
  274. on older Linux floppy disks. This option will enlarge your kernel
  275. by about 28 KB. If unsure, say N.
  276. To compile this file system support as a module, choose M here: the
  277. module will be called minix. Note that the file system of your root
  278. partition (the one containing the directory /) cannot be compiled as
  279. a module.
  280. config ROMFS_FS
  281. tristate "ROM file system support"
  282. ---help---
  283. This is a very small read-only file system mainly intended for
  284. initial ram disks of installation disks, but it could be used for
  285. other read-only media as well. Read
  286. <file:Documentation/filesystems/romfs.txt> for details.
  287. To compile this file system support as a module, choose M here: the
  288. module will be called romfs. Note that the file system of your
  289. root partition (the one containing the directory /) cannot be a
  290. module.
  291. If you don't know whether you need it, then you don't need it:
  292. answer N.
  293. config QUOTA
  294. bool "Quota support"
  295. help
  296. If you say Y here, you will be able to set per user limits for disk
  297. usage (also called disk quotas). Currently, it works for the
  298. ext2, ext3, and reiserfs file system. ext3 also supports journalled
  299. quotas for which you don't need to run quotacheck(8) after an unclean
  300. shutdown. You need additional software in order to use quota support
  301. (you can download sources from
  302. <http://www.sf.net/projects/linuxquota/>). For further details, read
  303. the Quota mini-HOWTO, available from
  304. <http://www.tldp.org/docs.html#howto>, or the documentation provided
  305. with the quota tools. Probably the quota support is only useful for
  306. multi user systems. If unsure, say N.
  307. config QFMT_V1
  308. tristate "Old quota format support"
  309. depends on QUOTA
  310. help
  311. This quota format was (is) used by kernels earlier than 2.4.22. If
  312. you have quota working and you don't want to convert to new quota
  313. format say Y here.
  314. config QFMT_V2
  315. tristate "Quota format v2 support"
  316. depends on QUOTA
  317. help
  318. This quota format allows using quotas with 32-bit UIDs/GIDs. If you
  319. need this functionality say Y here. Note that you will need recent
  320. quota utilities (>= 3.01) for new quota format with this kernel.
  321. config QUOTACTL
  322. bool
  323. depends on XFS_QUOTA || QUOTA
  324. default y
  325. config DNOTIFY
  326. bool "Dnotify support" if EMBEDDED
  327. default y
  328. help
  329. Dnotify is a directory-based per-fd file change notification system
  330. that uses signals to communicate events to user-space. There exist
  331. superior alternatives, but some applications may still rely on
  332. dnotify.
  333. Because of this, if unsure, say Y.
  334. config AUTOFS_FS
  335. tristate "Kernel automounter support"
  336. help
  337. The automounter is a tool to automatically mount remote file systems
  338. on demand. This implementation is partially kernel-based to reduce
  339. overhead in the already-mounted case; this is unlike the BSD
  340. automounter (amd), which is a pure user space daemon.
  341. To use the automounter you need the user-space tools from the autofs
  342. package; you can find the location in <file:Documentation/Changes>.
  343. You also want to answer Y to "NFS file system support", below.
  344. If you want to use the newer version of the automounter with more
  345. features, say N here and say Y to "Kernel automounter v4 support",
  346. below.
  347. To compile this support as a module, choose M here: the module will be
  348. called autofs.
  349. If you are not a part of a fairly large, distributed network, you
  350. probably do not need an automounter, and can say N here.
  351. config AUTOFS4_FS
  352. tristate "Kernel automounter version 4 support (also supports v3)"
  353. help
  354. The automounter is a tool to automatically mount remote file systems
  355. on demand. This implementation is partially kernel-based to reduce
  356. overhead in the already-mounted case; this is unlike the BSD
  357. automounter (amd), which is a pure user space daemon.
  358. To use the automounter you need the user-space tools from
  359. <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
  360. want to answer Y to "NFS file system support", below.
  361. To compile this support as a module, choose M here: the module will be
  362. called autofs4. You will need to add "alias autofs autofs4" to your
  363. modules configuration file.
  364. If you are not a part of a fairly large, distributed network or
  365. don't have a laptop which needs to dynamically reconfigure to the
  366. local network, you probably do not need an automounter, and can say
  367. N here.
  368. menu "CD-ROM/DVD Filesystems"
  369. config ISO9660_FS
  370. tristate "ISO 9660 CDROM file system support"
  371. help
  372. This is the standard file system used on CD-ROMs. It was previously
  373. known as "High Sierra File System" and is called "hsfs" on other
  374. Unix systems. The so-called Rock-Ridge extensions which allow for
  375. long Unix filenames and symbolic links are also supported by this
  376. driver. If you have a CD-ROM drive and want to do more with it than
  377. just listen to audio CDs and watch its LEDs, say Y (and read
  378. <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
  379. available from <http://www.tldp.org/docs.html#howto>), thereby
  380. enlarging your kernel by about 27 KB; otherwise say N.
  381. To compile this file system support as a module, choose M here: the
  382. module will be called isofs.
  383. config JOLIET
  384. bool "Microsoft Joliet CDROM extensions"
  385. depends on ISO9660_FS
  386. select NLS
  387. help
  388. Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
  389. which allows for long filenames in unicode format (unicode is the
  390. new 16 bit character code, successor to ASCII, which encodes the
  391. characters of almost all languages of the world; see
  392. <http://www.unicode.org/> for more information). Say Y here if you
  393. want to be able to read Joliet CD-ROMs under Linux.
  394. config ZISOFS
  395. bool "Transparent decompression extension"
  396. depends on ISO9660_FS
  397. select ZLIB_INFLATE
  398. help
  399. This is a Linux-specific extension to RockRidge which lets you store
  400. data in compressed form on a CD-ROM and have it transparently
  401. decompressed when the CD-ROM is accessed. See
  402. <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
  403. necessary to create such a filesystem. Say Y here if you want to be
  404. able to read such compressed CD-ROMs.
  405. config ZISOFS_FS
  406. # for fs/nls/Config.in
  407. tristate
  408. depends on ZISOFS
  409. default ISO9660_FS
  410. config UDF_FS
  411. tristate "UDF file system support"
  412. help
  413. This is the new file system used on some CD-ROMs and DVDs. Say Y if
  414. you intend to mount DVD discs or CDRW's written in packet mode, or
  415. if written to by other UDF utilities, such as DirectCD.
  416. Please read <file:Documentation/filesystems/udf.txt>.
  417. To compile this file system support as a module, choose M here: the
  418. module will be called udf.
  419. If unsure, say N.
  420. config UDF_NLS
  421. bool
  422. default y
  423. depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
  424. endmenu
  425. menu "DOS/FAT/NT Filesystems"
  426. config FAT_FS
  427. tristate
  428. select NLS
  429. help
  430. If you want to use one of the FAT-based file systems (the MS-DOS and
  431. VFAT (Windows 95) file systems), then you must say Y or M here
  432. to include FAT support. You will then be able to mount partitions or
  433. diskettes with FAT-based file systems and transparently access the
  434. files on them, i.e. MSDOS files will look and behave just like all
  435. other Unix files.
  436. This FAT support is not a file system in itself, it only provides
  437. the foundation for the other file systems. You will have to say Y or
  438. M to at least one of "MSDOS fs support" or "VFAT fs support" in
  439. order to make use of it.
  440. Another way to read and write MSDOS floppies and hard drive
  441. partitions from within Linux (but not transparently) is with the
  442. mtools ("man mtools") program suite. You don't need to say Y here in
  443. order to do that.
  444. If you need to move large files on floppies between a DOS and a
  445. Linux box, say Y here, mount the floppy under Linux with an MSDOS
  446. file system and use GNU tar's M option. GNU tar is a program
  447. available for Unix and DOS ("man tar" or "info tar").
  448. It is now also becoming possible to read and write compressed FAT
  449. file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
  450. details.
  451. The FAT support will enlarge your kernel by about 37 KB. If unsure,
  452. say Y.
  453. To compile this as a module, choose M here: the module will be called
  454. fat. Note that if you compile the FAT support as a module, you
  455. cannot compile any of the FAT-based file systems into the kernel
  456. -- they will have to be modules as well.
  457. config MSDOS_FS
  458. tristate "MSDOS fs support"
  459. select FAT_FS
  460. help
  461. This allows you to mount MSDOS partitions of your hard drive (unless
  462. they are compressed; to access compressed MSDOS partitions under
  463. Linux, you can either use the DOS emulator DOSEMU, described in the
  464. DOSEMU-HOWTO, available from
  465. <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
  466. <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
  467. intend to use dosemu with a non-compressed MSDOS partition, say Y
  468. here) and MSDOS floppies. This means that file access becomes
  469. transparent, i.e. the MSDOS files look and behave just like all
  470. other Unix files.
  471. If you have Windows 95 or Windows NT installed on your MSDOS
  472. partitions, you should use the VFAT file system (say Y to "VFAT fs
  473. support" below), or you will not be able to see the long filenames
  474. generated by Windows 95 / Windows NT.
  475. This option will enlarge your kernel by about 7 KB. If unsure,
  476. answer Y. This will only work if you said Y to "DOS FAT fs support"
  477. as well. To compile this as a module, choose M here: the module will
  478. be called msdos.
  479. config VFAT_FS
  480. tristate "VFAT (Windows-95) fs support"
  481. select FAT_FS
  482. help
  483. This option provides support for normal Windows file systems with
  484. long filenames. That includes non-compressed FAT-based file systems
  485. used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
  486. programs from the mtools package.
  487. The VFAT support enlarges your kernel by about 10 KB and it only
  488. works if you said Y to the "DOS FAT fs support" above. Please read
  489. the file <file:Documentation/filesystems/vfat.txt> for details. If
  490. unsure, say Y.
  491. To compile this as a module, choose M here: the module will be called
  492. vfat.
  493. config FAT_DEFAULT_CODEPAGE
  494. int "Default codepage for FAT"
  495. depends on MSDOS_FS || VFAT_FS
  496. default 437
  497. help
  498. This option should be set to the codepage of your FAT filesystems.
  499. It can be overridden with the "codepage" mount option.
  500. See <file:Documentation/filesystems/vfat.txt> for more information.
  501. config FAT_DEFAULT_IOCHARSET
  502. string "Default iocharset for FAT"
  503. depends on VFAT_FS
  504. default "iso8859-1"
  505. help
  506. Set this to the default input/output character set you'd
  507. like FAT to use. It should probably match the character set
  508. that most of your FAT filesystems use, and can be overridden
  509. with the "iocharset" mount option for FAT filesystems.
  510. Note that "utf8" is not recommended for FAT filesystems.
  511. If unsure, you shouldn't set "utf8" here.
  512. See <file:Documentation/filesystems/vfat.txt> for more information.
  513. config NTFS_FS
  514. tristate "NTFS file system support"
  515. select NLS
  516. help
  517. NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
  518. Saying Y or M here enables read support. There is partial, but
  519. safe, write support available. For write support you must also
  520. say Y to "NTFS write support" below.
  521. There are also a number of user-space tools available, called
  522. ntfsprogs. These include ntfsundelete and ntfsresize, that work
  523. without NTFS support enabled in the kernel.
  524. This is a rewrite from scratch of Linux NTFS support and replaced
  525. the old NTFS code starting with Linux 2.5.11. A backport to
  526. the Linux 2.4 kernel series is separately available as a patch
  527. from the project web site.
  528. For more information see <file:Documentation/filesystems/ntfs.txt>
  529. and <http://linux-ntfs.sourceforge.net/>.
  530. To compile this file system support as a module, choose M here: the
  531. module will be called ntfs.
  532. If you are not using Windows NT, 2000, XP or 2003 in addition to
  533. Linux on your computer it is safe to say N.
  534. config NTFS_DEBUG
  535. bool "NTFS debugging support"
  536. depends on NTFS_FS
  537. help
  538. If you are experiencing any problems with the NTFS file system, say
  539. Y here. This will result in additional consistency checks to be
  540. performed by the driver as well as additional debugging messages to
  541. be written to the system log. Note that debugging messages are
  542. disabled by default. To enable them, supply the option debug_msgs=1
  543. at the kernel command line when booting the kernel or as an option
  544. to insmod when loading the ntfs module. Once the driver is active,
  545. you can enable debugging messages by doing (as root):
  546. echo 1 > /proc/sys/fs/ntfs-debug
  547. Replacing the "1" with "0" would disable debug messages.
  548. If you leave debugging messages disabled, this results in little
  549. overhead, but enabling debug messages results in very significant
  550. slowdown of the system.
  551. When reporting bugs, please try to have available a full dump of
  552. debugging messages while the misbehaviour was occurring.
  553. config NTFS_RW
  554. bool "NTFS write support"
  555. depends on NTFS_FS
  556. help
  557. This enables the partial, but safe, write support in the NTFS driver.
  558. The only supported operation is overwriting existing files, without
  559. changing the file length. No file or directory creation, deletion or
  560. renaming is possible. Note only non-resident files can be written to
  561. so you may find that some very small files (<500 bytes or so) cannot
  562. be written to.
  563. While we cannot guarantee that it will not damage any data, we have
  564. so far not received a single report where the driver would have
  565. damaged someones data so we assume it is perfectly safe to use.
  566. Note: While write support is safe in this version (a rewrite from
  567. scratch of the NTFS support), it should be noted that the old NTFS
  568. write support, included in Linux 2.5.10 and before (since 1997),
  569. is not safe.
  570. This is currently useful with TopologiLinux. TopologiLinux is run
  571. on top of any DOS/Microsoft Windows system without partitioning your
  572. hard disk. Unlike other Linux distributions TopologiLinux does not
  573. need its own partition. For more information see
  574. <http://topologi-linux.sourceforge.net/>
  575. It is perfectly safe to say N here.
  576. endmenu
  577. menu "Pseudo filesystems"
  578. config PROC_FS
  579. bool "/proc file system support"
  580. help
  581. This is a virtual file system providing information about the status
  582. of the system. "Virtual" means that it doesn't take up any space on
  583. your hard disk: the files are created on the fly by the kernel when
  584. you try to access them. Also, you cannot read the files with older
  585. version of the program less: you need to use more or cat.
  586. It's totally cool; for example, "cat /proc/interrupts" gives
  587. information about what the different IRQs are used for at the moment
  588. (there is a small number of Interrupt ReQuest lines in your computer
  589. that are used by the attached devices to gain the CPU's attention --
  590. often a source of trouble if two devices are mistakenly configured
  591. to use the same IRQ). The program procinfo to display some
  592. information about your system gathered from the /proc file system.
  593. Before you can use the /proc file system, it has to be mounted,
  594. meaning it has to be given a location in the directory hierarchy.
  595. That location should be /proc. A command such as "mount -t proc proc
  596. /proc" or the equivalent line in /etc/fstab does the job.
  597. The /proc file system is explained in the file
  598. <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
  599. ("man 5 proc").
  600. This option will enlarge your kernel by about 67 KB. Several
  601. programs depend on this, so everyone should say Y here.
  602. config PROC_KCORE
  603. bool "/proc/kcore support" if !ARM
  604. depends on PROC_FS && MMU
  605. config PROC_VMCORE
  606. bool "/proc/vmcore support (EXPERIMENTAL)"
  607. depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP
  608. help
  609. Exports the dump image of crashed kernel in ELF format.
  610. config SYSFS
  611. bool "sysfs file system support" if EMBEDDED
  612. default y
  613. help
  614. The sysfs filesystem is a virtual filesystem that the kernel uses to
  615. export internal kernel objects, their attributes, and their
  616. relationships to one another.
  617. Users can use sysfs to ascertain useful information about the running
  618. kernel, such as the devices the kernel has discovered on each bus and
  619. which driver each is bound to. sysfs can also be used to tune devices
  620. and other kernel subsystems.
  621. Some system agents rely on the information in sysfs to operate.
  622. /sbin/hotplug uses device and object attributes in sysfs to assist in
  623. delegating policy decisions, like persistantly naming devices.
  624. sysfs is currently used by the block subsystem to mount the root
  625. partition. If sysfs is disabled you must specify the boot device on
  626. the kernel boot command line via its major and minor numbers. For
  627. example, "root=03:01" for /dev/hda1.
  628. Designers of embedded systems may wish to say N here to conserve space.
  629. config DEVPTS_FS_XATTR
  630. bool "/dev/pts Extended Attributes"
  631. depends on UNIX98_PTYS
  632. help
  633. Extended attributes are name:value pairs associated with inodes by
  634. the kernel or by users (see the attr(5) manual page, or visit
  635. <http://acl.bestbits.at/> for details).
  636. If unsure, say N.
  637. config DEVPTS_FS_SECURITY
  638. bool "/dev/pts Security Labels"
  639. depends on DEVPTS_FS_XATTR
  640. help
  641. Security labels support alternative access control models
  642. implemented by security modules like SELinux. This option
  643. enables an extended attribute handler for file security
  644. labels in the /dev/pts filesystem.
  645. If you are not using a security module that requires using
  646. extended attributes for file security labels, say N.
  647. config TMPFS
  648. bool "Virtual memory file system support (former shm fs)"
  649. help
  650. Tmpfs is a file system which keeps all files in virtual memory.
  651. Everything in tmpfs is temporary in the sense that no files will be
  652. created on your hard drive. The files live in memory and swap
  653. space. If you unmount a tmpfs instance, everything stored therein is
  654. lost.
  655. See <file:Documentation/filesystems/tmpfs.txt> for details.
  656. config TMPFS_XATTR
  657. bool "tmpfs Extended Attributes"
  658. depends on TMPFS
  659. help
  660. Extended attributes are name:value pairs associated with inodes by
  661. the kernel or by users (see the attr(5) manual page, or visit
  662. <http://acl.bestbits.at/> for details).
  663. If unsure, say N.
  664. config TMPFS_SECURITY
  665. bool "tmpfs Security Labels"
  666. depends on TMPFS_XATTR
  667. help
  668. Security labels support alternative access control models
  669. implemented by security modules like SELinux. This option
  670. enables an extended attribute handler for file security
  671. labels in the tmpfs filesystem.
  672. If you are not using a security module that requires using
  673. extended attributes for file security labels, say N.
  674. config HUGETLBFS
  675. bool "HugeTLB file system support"
  676. depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
  677. config HUGETLB_PAGE
  678. def_bool HUGETLBFS
  679. config RAMFS
  680. bool
  681. default y
  682. ---help---
  683. Ramfs is a file system which keeps all files in RAM. It allows
  684. read and write access.
  685. It is more of an programming example than a useable file system. If
  686. you need a file system which lives in RAM with limit checking use
  687. tmpfs.
  688. To compile this as a module, choose M here: the module will be called
  689. ramfs.
  690. endmenu
  691. menu "Miscellaneous filesystems"
  692. config ADFS_FS
  693. tristate "ADFS file system support (EXPERIMENTAL)"
  694. depends on EXPERIMENTAL
  695. help
  696. The Acorn Disc Filing System is the standard file system of the
  697. RiscOS operating system which runs on Acorn's ARM-based Risc PC
  698. systems and the Acorn Archimedes range of machines. If you say Y
  699. here, Linux will be able to read from ADFS partitions on hard drives
  700. and from ADFS-formatted floppy discs. If you also want to be able to
  701. write to those devices, say Y to "ADFS write support" below.
  702. The ADFS partition should be the first partition (i.e.,
  703. /dev/[hs]d?1) on each of your drives. Please read the file
  704. <file:Documentation/filesystems/adfs.txt> for further details.
  705. To compile this code as a module, choose M here: the module will be
  706. called adfs.
  707. If unsure, say N.
  708. config ADFS_FS_RW
  709. bool "ADFS write support (DANGEROUS)"
  710. depends on ADFS_FS
  711. help
  712. If you say Y here, you will be able to write to ADFS partitions on
  713. hard drives and ADFS-formatted floppy disks. This is experimental
  714. codes, so if you're unsure, say N.
  715. config AFFS_FS
  716. tristate "Amiga FFS file system support (EXPERIMENTAL)"
  717. depends on EXPERIMENTAL
  718. help
  719. The Fast File System (FFS) is the common file system used on hard
  720. disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
  721. if you want to be able to read and write files from and to an Amiga
  722. FFS partition on your hard drive. Amiga floppies however cannot be
  723. read with this driver due to an incompatibility of the floppy
  724. controller used in an Amiga and the standard floppy controller in
  725. PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
  726. and <file:fs/affs/Changes>.
  727. With this driver you can also mount disk files used by Bernd
  728. Schmidt's Un*X Amiga Emulator
  729. (<http://www.freiburg.linux.de/~uae/>).
  730. If you want to do this, you will also need to say Y or M to "Loop
  731. device support", above.
  732. To compile this file system support as a module, choose M here: the
  733. module will be called affs. If unsure, say N.
  734. config HFS_FS
  735. tristate "Apple Macintosh file system support (EXPERIMENTAL)"
  736. depends on EXPERIMENTAL
  737. help
  738. If you say Y here, you will be able to mount Macintosh-formatted
  739. floppy disks and hard drive partitions with full read-write access.
  740. Please read <file:fs/hfs/HFS.txt> to learn about the available mount
  741. options.
  742. To compile this file system support as a module, choose M here: the
  743. module will be called hfs.
  744. config HFSPLUS_FS
  745. tristate "Apple Extended HFS file system support"
  746. select NLS
  747. select NLS_UTF8
  748. help
  749. If you say Y here, you will be able to mount extended format
  750. Macintosh-formatted hard drive partitions with full read-write access.
  751. This file system is often called HFS+ and was introduced with
  752. MacOS 8. It includes all Mac specific filesystem data such as
  753. data forks and creator codes, but it also has several UNIX
  754. style features such as file ownership and permissions.
  755. config BEFS_FS
  756. tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
  757. depends on EXPERIMENTAL
  758. select NLS
  759. help
  760. The BeOS File System (BeFS) is the native file system of Be, Inc's
  761. BeOS. Notable features include support for arbitrary attributes
  762. on files and directories, and database-like indeces on selected
  763. attributes. (Also note that this driver doesn't make those features
  764. available at this time). It is a 64 bit filesystem, so it supports
  765. extremly large volumes and files.
  766. If you use this filesystem, you should also say Y to at least one
  767. of the NLS (native language support) options below.
  768. If you don't know what this is about, say N.
  769. To compile this as a module, choose M here: the module will be
  770. called befs.
  771. config BEFS_DEBUG
  772. bool "Debug BeFS"
  773. depends on BEFS_FS
  774. help
  775. If you say Y here, you can use the 'debug' mount option to enable
  776. debugging output from the driver.
  777. config BFS_FS
  778. tristate "BFS file system support (EXPERIMENTAL)"
  779. depends on EXPERIMENTAL
  780. help
  781. Boot File System (BFS) is a file system used under SCO UnixWare to
  782. allow the bootloader access to the kernel image and other important
  783. files during the boot process. It is usually mounted under /stand
  784. and corresponds to the slice marked as "STAND" in the UnixWare
  785. partition. You should say Y if you want to read or write the files
  786. on your /stand slice from within Linux. You then also need to say Y
  787. to "UnixWare slices support", below. More information about the BFS
  788. file system is contained in the file
  789. <file:Documentation/filesystems/bfs.txt>.
  790. If you don't know what this is about, say N.
  791. To compile this as a module, choose M here: the module will be called
  792. bfs. Note that the file system of your root partition (the one
  793. containing the directory /) cannot be compiled as a module.
  794. config EFS_FS
  795. tristate "EFS file system support (read only) (EXPERIMENTAL)"
  796. depends on EXPERIMENTAL
  797. help
  798. EFS is an older file system used for non-ISO9660 CD-ROMs and hard
  799. disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
  800. uses the XFS file system for hard disk partitions however).
  801. This implementation only offers read-only access. If you don't know
  802. what all this is about, it's safe to say N. For more information
  803. about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
  804. To compile the EFS file system support as a module, choose M here: the
  805. module will be called efs.
  806. config JFFS_FS
  807. tristate "Journalling Flash File System (JFFS) support"
  808. depends on MTD
  809. help
  810. JFFS is the Journaling Flash File System developed by Axis
  811. Communications in Sweden, aimed at providing a crash/powerdown-safe
  812. file system for disk-less embedded devices. Further information is
  813. available at (<http://developer.axis.com/software/jffs/>).
  814. config JFFS_FS_VERBOSE
  815. int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
  816. depends on JFFS_FS
  817. default "0"
  818. help
  819. Determines the verbosity level of the JFFS debugging messages.
  820. config JFFS_PROC_FS
  821. bool "JFFS stats available in /proc filesystem"
  822. depends on JFFS_FS && PROC_FS
  823. help
  824. Enabling this option will cause statistics from mounted JFFS file systems
  825. to be made available to the user in the /proc/fs/jffs/ directory.
  826. config JFFS2_FS
  827. tristate "Journalling Flash File System v2 (JFFS2) support"
  828. select CRC32
  829. depends on MTD
  830. help
  831. JFFS2 is the second generation of the Journalling Flash File System
  832. for use on diskless embedded devices. It provides improved wear
  833. levelling, compression and support for hard links. You cannot use
  834. this on normal block devices, only on 'MTD' devices.
  835. Further information on the design and implementation of JFFS2 is
  836. available at <http://sources.redhat.com/jffs2/>.
  837. config JFFS2_FS_DEBUG
  838. int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
  839. depends on JFFS2_FS
  840. default "0"
  841. help
  842. This controls the amount of debugging messages produced by the JFFS2
  843. code. Set it to zero for use in production systems. For evaluation,
  844. testing and debugging, it's advisable to set it to one. This will
  845. enable a few assertions and will print debugging messages at the
  846. KERN_DEBUG loglevel, where they won't normally be visible. Level 2
  847. is unlikely to be useful - it enables extra debugging in certain
  848. areas which at one point needed debugging, but when the bugs were
  849. located and fixed, the detailed messages were relegated to level 2.
  850. If reporting bugs, please try to have available a full dump of the
  851. messages at debug level 1 while the misbehaviour was occurring.
  852. config JFFS2_FS_NAND
  853. bool "JFFS2 support for NAND flash"
  854. depends on JFFS2_FS
  855. default n
  856. help
  857. This enables the support for NAND flash in JFFS2. NAND is a newer
  858. type of flash chip design than the traditional NOR flash, with
  859. higher density but a handful of characteristics which make it more
  860. interesting for the file system to use.
  861. Say 'N' unless you have NAND flash.
  862. config JFFS2_FS_NOR_ECC
  863. bool "JFFS2 support for ECC'd NOR flash (EXPERIMENTAL)"
  864. depends on JFFS2_FS && EXPERIMENTAL
  865. default n
  866. help
  867. This enables the experimental support for NOR flash with transparent
  868. ECC for JFFS2. This type of flash chip is not common, however it is
  869. available from ST Microelectronics.
  870. config JFFS2_COMPRESSION_OPTIONS
  871. bool "Advanced compression options for JFFS2"
  872. depends on JFFS2_FS
  873. default n
  874. help
  875. Enabling this option allows you to explicitly choose which
  876. compression modules, if any, are enabled in JFFS2. Removing
  877. compressors and mean you cannot read existing file systems,
  878. and enabling experimental compressors can mean that you
  879. write a file system which cannot be read by a standard kernel.
  880. If unsure, you should _definitely_ say 'N'.
  881. config JFFS2_ZLIB
  882. bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
  883. select ZLIB_INFLATE
  884. select ZLIB_DEFLATE
  885. depends on JFFS2_FS
  886. default y
  887. help
  888. Zlib is designed to be a free, general-purpose, legally unencumbered,
  889. lossless data-compression library for use on virtually any computer
  890. hardware and operating system. See <http://www.gzip.org/zlib/> for
  891. further information.
  892. Say 'Y' if unsure.
  893. config JFFS2_RTIME
  894. bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
  895. depends on JFFS2_FS
  896. default y
  897. help
  898. Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
  899. config JFFS2_RUBIN
  900. bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
  901. depends on JFFS2_FS
  902. default n
  903. help
  904. RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
  905. choice
  906. prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
  907. default JFFS2_CMODE_PRIORITY
  908. depends on JFFS2_FS
  909. help
  910. You can set here the default compression mode of JFFS2 from
  911. the available compression modes. Don't touch if unsure.
  912. config JFFS2_CMODE_NONE
  913. bool "no compression"
  914. help
  915. Uses no compression.
  916. config JFFS2_CMODE_PRIORITY
  917. bool "priority"
  918. help
  919. Tries the compressors in a predefinied order and chooses the first
  920. successful one.
  921. config JFFS2_CMODE_SIZE
  922. bool "size (EXPERIMENTAL)"
  923. help
  924. Tries all compressors and chooses the one which has the smallest
  925. result.
  926. endchoice
  927. config CRAMFS
  928. tristate "Compressed ROM file system support (cramfs)"
  929. select ZLIB_INFLATE
  930. help
  931. Saying Y here includes support for CramFs (Compressed ROM File
  932. System). CramFs is designed to be a simple, small, and compressed
  933. file system for ROM based embedded systems. CramFs is read-only,
  934. limited to 256MB file systems (with 16MB files), and doesn't support
  935. 16/32 bits uid/gid, hard links and timestamps.
  936. See <file:Documentation/filesystems/cramfs.txt> and
  937. <file:fs/cramfs/README> for further information.
  938. To compile this as a module, choose M here: the module will be called
  939. cramfs. Note that the root file system (the one containing the
  940. directory /) cannot be compiled as a module.
  941. If unsure, say N.
  942. config VXFS_FS
  943. tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
  944. help
  945. FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
  946. file system format. VERITAS VxFS(TM) is the standard file system
  947. of SCO UnixWare (and possibly others) and optionally available
  948. for Sunsoft Solaris, HP-UX and many other operating systems.
  949. Currently only readonly access is supported.
  950. NOTE: the file system type as used by mount(1), mount(2) and
  951. fstab(5) is 'vxfs' as it describes the file system format, not
  952. the actual driver.
  953. To compile this as a module, choose M here: the module will be
  954. called freevxfs. If unsure, say N.
  955. config HPFS_FS
  956. tristate "OS/2 HPFS file system support"
  957. help
  958. OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  959. is the file system used for organizing files on OS/2 hard disk
  960. partitions. Say Y if you want to be able to read files from and
  961. write files to an OS/2 HPFS partition on your hard drive. OS/2
  962. floppies however are in regular MSDOS format, so you don't need this
  963. option in order to be able to read them. Read
  964. <file:Documentation/filesystems/hpfs.txt>.
  965. To compile this file system support as a module, choose M here: the
  966. module will be called hpfs. If unsure, say N.
  967. config QNX4FS_FS
  968. tristate "QNX4 file system support (read only)"
  969. help
  970. This is the file system used by the real-time operating systems
  971. QNX 4 and QNX 6 (the latter is also called QNX RTP).
  972. Further information is available at <http://www.qnx.com/>.
  973. Say Y if you intend to mount QNX hard disks or floppies.
  974. Unless you say Y to "QNX4FS read-write support" below, you will
  975. only be able to read these file systems.
  976. To compile this file system support as a module, choose M here: the
  977. module will be called qnx4.
  978. If you don't know whether you need it, then you don't need it:
  979. answer N.
  980. config QNX4FS_RW
  981. bool "QNX4FS write support (DANGEROUS)"
  982. depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
  983. help
  984. Say Y if you want to test write support for QNX4 file systems.
  985. It's currently broken, so for now:
  986. answer N.
  987. config SYSV_FS
  988. tristate "System V/Xenix/V7/Coherent file system support"
  989. help
  990. SCO, Xenix and Coherent are commercial Unix systems for Intel
  991. machines, and Version 7 was used on the DEC PDP-11. Saying Y
  992. here would allow you to read from their floppies and hard disk
  993. partitions.
  994. If you have floppies or hard disk partitions like that, it is likely
  995. that they contain binaries from those other Unix systems; in order
  996. to run these binaries, you will want to install linux-abi which is a
  997. a set of kernel modules that lets you run SCO, Xenix, Wyse,
  998. UnixWare, Dell Unix and System V programs under Linux. It is
  999. available via FTP (user: ftp) from
  1000. <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
  1001. NOTE: that will work only for binaries from Intel-based systems;
  1002. PDP ones will have to wait until somebody ports Linux to -11 ;-)
  1003. If you only intend to mount files from some other Unix over the
  1004. network using NFS, you don't need the System V file system support
  1005. (but you need NFS file system support obviously).
  1006. Note that this option is generally not needed for floppies, since a
  1007. good portable way to transport files and directories between unixes
  1008. (and even other operating systems) is given by the tar program ("man
  1009. tar" or preferably "info tar"). Note also that this option has
  1010. nothing whatsoever to do with the option "System V IPC". Read about
  1011. the System V file system in
  1012. <file:Documentation/filesystems/sysv-fs.txt>.
  1013. Saying Y here will enlarge your kernel by about 27 KB.
  1014. To compile this as a module, choose M here: the module will be called
  1015. sysv.
  1016. If you haven't heard about all of this before, it's safe to say N.
  1017. config UFS_FS
  1018. tristate "UFS file system support (read only)"
  1019. help
  1020. BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
  1021. OpenBSD and NeXTstep) use a file system called UFS. Some System V
  1022. Unixes can create and mount hard disk partitions and diskettes using
  1023. this file system as well. Saying Y here will allow you to read from
  1024. these partitions; if you also want to write to them, say Y to the
  1025. experimental "UFS file system write support", below. Please read the
  1026. file <file:Documentation/filesystems/ufs.txt> for more information.
  1027. The recently released UFS2 variant (used in FreeBSD 5.x) is
  1028. READ-ONLY supported.
  1029. If you only intend to mount files from some other Unix over the
  1030. network using NFS, you don't need the UFS file system support (but
  1031. you need NFS file system support obviously).
  1032. Note that this option is generally not needed for floppies, since a
  1033. good portable way to transport files and directories between unixes
  1034. (and even other operating systems) is given by the tar program ("man
  1035. tar" or preferably "info tar").
  1036. When accessing NeXTstep files, you may need to convert them from the
  1037. NeXT character set to the Latin1 character set; use the program
  1038. recode ("info recode") for this purpose.
  1039. To compile the UFS file system support as a module, choose M here: the
  1040. module will be called ufs.
  1041. If you haven't heard about all of this before, it's safe to say N.
  1042. config UFS_FS_WRITE
  1043. bool "UFS file system write support (DANGEROUS)"
  1044. depends on UFS_FS && EXPERIMENTAL
  1045. help
  1046. Say Y here if you want to try writing to UFS partitions. This is
  1047. experimental, so you should back up your UFS partitions beforehand.
  1048. endmenu
  1049. menu "Network File Systems"
  1050. depends on NET
  1051. config NFS_FS
  1052. tristate "NFS file system support"
  1053. depends on INET
  1054. select LOCKD
  1055. select SUNRPC
  1056. select NFS_ACL_SUPPORT if NFS_V3_ACL
  1057. help
  1058. If you are connected to some other (usually local) Unix computer
  1059. (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
  1060. on that computer (the NFS server) using the Network File Sharing
  1061. protocol, say Y. "Mounting files" means that the client can access
  1062. the files with usual UNIX commands as if they were sitting on the
  1063. client's hard disk. For this to work, the server must run the
  1064. programs nfsd and mountd (but does not need to have NFS file system
  1065. support enabled in its kernel). NFS is explained in the Network
  1066. Administrator's Guide, available from
  1067. <http://www.tldp.org/docs.html#guide>, on its man page: "man
  1068. nfs", and in the NFS-HOWTO.
  1069. A superior but less widely used alternative to NFS is provided by
  1070. the Coda file system; see "Coda file system support" below.
  1071. If you say Y here, you should have said Y to TCP/IP networking also.
  1072. This option would enlarge your kernel by about 27 KB.
  1073. To compile this file system support as a module, choose M here: the
  1074. module will be called nfs.
  1075. If you are configuring a diskless machine which will mount its root
  1076. file system over NFS at boot time, say Y here and to "Kernel
  1077. level IP autoconfiguration" above and to "Root file system on NFS"
  1078. below. You cannot compile this driver as a module in this case.
  1079. There are two packages designed for booting diskless machines over
  1080. the net: netboot, available from
  1081. <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
  1082. available from <http://ftp1.sourceforge.net/etherboot/>.
  1083. If you don't know what all this is about, say N.
  1084. config NFS_V3
  1085. bool "Provide NFSv3 client support"
  1086. depends on NFS_FS
  1087. help
  1088. Say Y here if you want your NFS client to be able to speak version
  1089. 3 of the NFS protocol.
  1090. If unsure, say Y.
  1091. config NFS_V3_ACL
  1092. bool "Provide client support for the NFSv3 ACL protocol extension"
  1093. depends on NFS_V3
  1094. help
  1095. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1096. Access Control Lists. The server should also be compiled with
  1097. the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
  1098. If unsure, say N.
  1099. config NFS_V4
  1100. bool "Provide NFSv4 client support (EXPERIMENTAL)"
  1101. depends on NFS_FS && EXPERIMENTAL
  1102. select RPCSEC_GSS_KRB5
  1103. help
  1104. Say Y here if you want your NFS client to be able to speak the newer
  1105. version 4 of the NFS protocol.
  1106. Note: Requires auxiliary userspace daemons which may be found on
  1107. http://www.citi.umich.edu/projects/nfsv4/
  1108. If unsure, say N.
  1109. config NFS_DIRECTIO
  1110. bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
  1111. depends on NFS_FS && EXPERIMENTAL
  1112. help
  1113. This option enables applications to perform uncached I/O on files
  1114. in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
  1115. is set for a file, its data is not cached in the system's page
  1116. cache. Data is moved to and from user-level application buffers
  1117. directly. Unlike local disk-based file systems, NFS O_DIRECT has
  1118. no alignment restrictions.
  1119. Unless your program is designed to use O_DIRECT properly, you are
  1120. much better off allowing the NFS client to manage data caching for
  1121. you. Misusing O_DIRECT can cause poor server performance or network
  1122. storms. This kernel build option defaults OFF to avoid exposing
  1123. system administrators unwittingly to a potentially hazardous
  1124. feature.
  1125. For more details on NFS O_DIRECT, see fs/nfs/direct.c.
  1126. If unsure, say N. This reduces the size of the NFS client, and
  1127. causes open() to return EINVAL if a file residing in NFS is
  1128. opened with the O_DIRECT flag.
  1129. config NFSD
  1130. tristate "NFS server support"
  1131. depends on INET
  1132. select LOCKD
  1133. select SUNRPC
  1134. select EXPORTFS
  1135. select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
  1136. help
  1137. If you want your Linux box to act as an NFS *server*, so that other
  1138. computers on your local network which support NFS can access certain
  1139. directories on your box transparently, you have two options: you can
  1140. use the self-contained user space program nfsd, in which case you
  1141. should say N here, or you can say Y and use the kernel based NFS
  1142. server. The advantage of the kernel based solution is that it is
  1143. faster.
  1144. In either case, you will need support software; the respective
  1145. locations are given in the file <file:Documentation/Changes> in the
  1146. NFS section.
  1147. If you say Y here, you will get support for version 2 of the NFS
  1148. protocol (NFSv2). If you also want NFSv3, say Y to the next question
  1149. as well.
  1150. Please read the NFS-HOWTO, available from
  1151. <http://www.tldp.org/docs.html#howto>.
  1152. To compile the NFS server support as a module, choose M here: the
  1153. module will be called nfsd. If unsure, say N.
  1154. config NFSD_V2_ACL
  1155. bool
  1156. depends on NFSD
  1157. config NFSD_V3
  1158. bool "Provide NFSv3 server support"
  1159. depends on NFSD
  1160. help
  1161. If you would like to include the NFSv3 server as well as the NFSv2
  1162. server, say Y here. If unsure, say Y.
  1163. config NFSD_V3_ACL
  1164. bool "Provide server support for the NFSv3 ACL protocol extension"
  1165. depends on NFSD_V3
  1166. select NFSD_V2_ACL
  1167. help
  1168. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1169. Access Control Lists on exported file systems. NFS clients should
  1170. be compiled with the NFSv3 ACL protocol extension; see the
  1171. CONFIG_NFS_V3_ACL option. If unsure, say N.
  1172. config NFSD_V4
  1173. bool "Provide NFSv4 server support (EXPERIMENTAL)"
  1174. depends on NFSD_V3 && EXPERIMENTAL
  1175. select NFSD_TCP
  1176. select CRYPTO_MD5
  1177. select CRYPTO
  1178. help
  1179. If you would like to include the NFSv4 server as well as the NFSv2
  1180. and NFSv3 servers, say Y here. This feature is experimental, and
  1181. should only be used if you are interested in helping to test NFSv4.
  1182. If unsure, say N.
  1183. config NFSD_TCP
  1184. bool "Provide NFS server over TCP support"
  1185. depends on NFSD
  1186. default y
  1187. help
  1188. If you want your NFS server to support TCP connections, say Y here.
  1189. TCP connections usually perform better than the default UDP when
  1190. the network is lossy or congested. If unsure, say Y.
  1191. config ROOT_NFS
  1192. bool "Root file system on NFS"
  1193. depends on NFS_FS=y && IP_PNP
  1194. help
  1195. If you want your Linux box to mount its whole root file system (the
  1196. one containing the directory /) from some other computer over the
  1197. net via NFS (presumably because your box doesn't have a hard disk),
  1198. say Y. Read <file:Documentation/nfsroot.txt> for details. It is
  1199. likely that in this case, you also want to say Y to "Kernel level IP
  1200. autoconfiguration" so that your box can discover its network address
  1201. at boot time.
  1202. Most people say N here.
  1203. config LOCKD
  1204. tristate
  1205. config LOCKD_V4
  1206. bool
  1207. depends on NFSD_V3 || NFS_V3
  1208. default y
  1209. config EXPORTFS
  1210. tristate
  1211. config NFS_ACL_SUPPORT
  1212. tristate
  1213. select FS_POSIX_ACL
  1214. config NFS_COMMON
  1215. bool
  1216. depends on NFSD || NFS_FS
  1217. default y
  1218. config SUNRPC
  1219. tristate
  1220. config SUNRPC_GSS
  1221. tristate
  1222. config RPCSEC_GSS_KRB5
  1223. tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
  1224. depends on SUNRPC && EXPERIMENTAL
  1225. select SUNRPC_GSS
  1226. select CRYPTO
  1227. select CRYPTO_MD5
  1228. select CRYPTO_DES
  1229. help
  1230. Provides for secure RPC calls by means of a gss-api
  1231. mechanism based on Kerberos V5. This is required for
  1232. NFSv4.
  1233. Note: Requires an auxiliary userspace daemon which may be found on
  1234. http://www.citi.umich.edu/projects/nfsv4/
  1235. If unsure, say N.
  1236. config RPCSEC_GSS_SPKM3
  1237. tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
  1238. depends on SUNRPC && EXPERIMENTAL
  1239. select SUNRPC_GSS
  1240. select CRYPTO
  1241. select CRYPTO_MD5
  1242. select CRYPTO_DES
  1243. help
  1244. Provides for secure RPC calls by means of a gss-api
  1245. mechanism based on the SPKM3 public-key mechanism.
  1246. Note: Requires an auxiliary userspace daemon which may be found on
  1247. http://www.citi.umich.edu/projects/nfsv4/
  1248. If unsure, say N.
  1249. config SMB_FS
  1250. tristate "SMB file system support (to mount Windows shares etc.)"
  1251. depends on INET
  1252. select NLS
  1253. help
  1254. SMB (Server Message Block) is the protocol Windows for Workgroups
  1255. (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
  1256. files and printers over local networks. Saying Y here allows you to
  1257. mount their file systems (often called "shares" in this context) and
  1258. access them just like any other Unix directory. Currently, this
  1259. works only if the Windows machines use TCP/IP as the underlying
  1260. transport protocol, and not NetBEUI. For details, read
  1261. <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
  1262. available from <http://www.tldp.org/docs.html#howto>.
  1263. Note: if you just want your box to act as an SMB *server* and make
  1264. files and printing services available to Windows clients (which need
  1265. to have a TCP/IP stack), you don't need to say Y here; you can use
  1266. the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
  1267. for that.
  1268. General information about how to connect Linux, Windows machines and
  1269. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1270. To compile the SMB support as a module, choose M here: the module will
  1271. be called smbfs. Most people say N, however.
  1272. config SMB_NLS_DEFAULT
  1273. bool "Use a default NLS"
  1274. depends on SMB_FS
  1275. help
  1276. Enabling this will make smbfs use nls translations by default. You
  1277. need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
  1278. settings and you need to give the default nls for the SMB server as
  1279. CONFIG_SMB_NLS_REMOTE.
  1280. The nls settings can be changed at mount time, if your smbmount
  1281. supports that, using the codepage and iocharset parameters.
  1282. smbmount from samba 2.2.0 or later supports this.
  1283. config SMB_NLS_REMOTE
  1284. string "Default Remote NLS Option"
  1285. depends on SMB_NLS_DEFAULT
  1286. default "cp437"
  1287. help
  1288. This setting allows you to specify a default value for which
  1289. codepage the server uses. If this field is left blank no
  1290. translations will be done by default. The local codepage/charset
  1291. default to CONFIG_NLS_DEFAULT.
  1292. The nls settings can be changed at mount time, if your smbmount
  1293. supports that, using the codepage and iocharset parameters.
  1294. smbmount from samba 2.2.0 or later supports this.
  1295. config CIFS
  1296. tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
  1297. depends on INET
  1298. select NLS
  1299. help
  1300. This is the client VFS module for the Common Internet File System
  1301. (CIFS) protocol which is the successor to the Server Message Block
  1302. (SMB) protocol, the native file sharing mechanism for most early
  1303. PC operating systems. The CIFS protocol is fully supported by
  1304. file servers such as Windows 2000 (including Windows 2003, NT 4
  1305. and Windows XP) as well by Samba (which provides excellent CIFS
  1306. server support for Linux and many other operating systems). Currently
  1307. you must use the smbfs client filesystem to access older SMB servers
  1308. such as Windows 9x and OS/2.
  1309. The intent of the cifs module is to provide an advanced
  1310. network file system client for mounting to CIFS compliant servers,
  1311. including support for dfs (hierarchical name space), secure per-user
  1312. session establishment, safe distributed caching (oplock), optional
  1313. packet signing, Unicode and other internationalization improvements,
  1314. and optional Winbind (nsswitch) integration. You do not need to enable
  1315. cifs if running only a (Samba) server. It is possible to enable both
  1316. smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
  1317. and Samba 3 servers, and smbfs for accessing old servers). If you need
  1318. to mount to Samba or Windows 2003 servers from this machine, say Y.
  1319. config CIFS_STATS
  1320. bool "CIFS statistics"
  1321. depends on CIFS
  1322. help
  1323. Enabling this option will cause statistics for each server share
  1324. mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
  1325. config CIFS_XATTR
  1326. bool "CIFS extended attributes (EXPERIMENTAL)"
  1327. depends on CIFS
  1328. help
  1329. Extended attributes are name:value pairs associated with inodes by
  1330. the kernel or by users (see the attr(5) manual page, or visit
  1331. <http://acl.bestbits.at/> for details). CIFS maps the name of
  1332. extended attributes beginning with the user namespace prefix
  1333. to SMB/CIFS EAs. EAs are stored on Windows servers without the
  1334. user namespace prefix, but their names are seen by Linux cifs clients
  1335. prefaced by the user namespace prefix. The system namespace
  1336. (used by some filesystems to store ACLs) is not supported at
  1337. this time.
  1338. If unsure, say N.
  1339. config CIFS_POSIX
  1340. bool "CIFS POSIX Extensions (EXPERIMENTAL)"
  1341. depends on CIFS_XATTR
  1342. help
  1343. Enabling this option will cause the cifs client to attempt to
  1344. negotiate a newer dialect with servers, such as Samba 3.0.5
  1345. or later, that optionally can handle more POSIX like (rather
  1346. than Windows like) file behavior. It also enables
  1347. support for POSIX ACLs (getfacl and setfacl) to servers
  1348. (such as Samba 3.10 and later) which can negotiate
  1349. CIFS POSIX ACL support. If unsure, say N.
  1350. config CIFS_EXPERIMENTAL
  1351. bool "CIFS Experimental Features (EXPERIMENTAL)"
  1352. depends on CIFS
  1353. help
  1354. Enables cifs features under testing. These features
  1355. are highly experimental. If unsure, say N.
  1356. config NCP_FS
  1357. tristate "NCP file system support (to mount NetWare volumes)"
  1358. depends on IPX!=n || INET
  1359. help
  1360. NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  1361. used by Novell NetWare clients to talk to file servers. It is to
  1362. IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
  1363. to mount NetWare file server volumes and to access them just like
  1364. any other Unix directory. For details, please read the file
  1365. <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
  1366. the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
  1367. You do not have to say Y here if you want your Linux box to act as a
  1368. file *server* for Novell NetWare clients.
  1369. General information about how to connect Linux, Windows machines and
  1370. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1371. To compile this as a module, choose M here: the module will be called
  1372. ncpfs. Say N unless you are connected to a Novell network.
  1373. source "fs/ncpfs/Kconfig"
  1374. config CODA_FS
  1375. tristate "Coda file system support (advanced network fs)"
  1376. depends on INET
  1377. help
  1378. Coda is an advanced network file system, similar to NFS in that it
  1379. enables you to mount file systems of a remote server and access them
  1380. with regular Unix commands as if they were sitting on your hard
  1381. disk. Coda has several advantages over NFS: support for
  1382. disconnected operation (e.g. for laptops), read/write server
  1383. replication, security model for authentication and encryption,
  1384. persistent client caches and write back caching.
  1385. If you say Y here, your Linux box will be able to act as a Coda
  1386. *client*. You will need user level code as well, both for the
  1387. client and server. Servers are currently user level, i.e. they need
  1388. no kernel support. Please read
  1389. <file:Documentation/filesystems/coda.txt> and check out the Coda
  1390. home page <http://www.coda.cs.cmu.edu/>.
  1391. To compile the coda client support as a module, choose M here: the
  1392. module will be called coda.
  1393. config CODA_FS_OLD_API
  1394. bool "Use 96-bit Coda file identifiers"
  1395. depends on CODA_FS
  1396. help
  1397. A new kernel-userspace API had to be introduced for Coda v6.0
  1398. to support larger 128-bit file identifiers as needed by the
  1399. new realms implementation.
  1400. However this new API is not backward compatible with older
  1401. clients. If you really need to run the old Coda userspace
  1402. cache manager then say Y.
  1403. For most cases you probably want to say N.
  1404. config AFS_FS
  1405. # for fs/nls/Config.in
  1406. tristate "Andrew File System support (AFS) (Experimental)"
  1407. depends on INET && EXPERIMENTAL
  1408. select RXRPC
  1409. help
  1410. If you say Y here, you will get an experimental Andrew File System
  1411. driver. It currently only supports unsecured read-only AFS access.
  1412. See <file:Documentation/filesystems/afs.txt> for more intormation.
  1413. If unsure, say N.
  1414. config RXRPC
  1415. tristate
  1416. endmenu
  1417. menu "Partition Types"
  1418. source "fs/partitions/Kconfig"
  1419. endmenu
  1420. source "fs/nls/Kconfig"
  1421. endmenu