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