Kconfig 63 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652165316541655165616571658165916601661166216631664166516661667166816691670167116721673167416751676167716781679168016811682168316841685168616871688168916901691169216931694169516961697169816991700170117021703170417051706170717081709171017111712171317141715171617171718171917201721172217231724172517261727172817291730173117321733173417351736173717381739174017411742174317441745174617471748
  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. select FS_POSIX_ACL
  26. help
  27. Posix Access Control Lists (ACLs) support permissions for users and
  28. groups beyond the owner/group/world scheme.
  29. To learn more about Access Control Lists, visit the Posix ACLs for
  30. Linux website <http://acl.bestbits.at/>.
  31. If you don't know what Access Control Lists are, say N
  32. config EXT2_FS_SECURITY
  33. bool "Ext2 Security Labels"
  34. depends on EXT2_FS_XATTR
  35. help
  36. Security labels support alternative access control models
  37. implemented by security modules like SELinux. This option
  38. enables an extended attribute handler for file security
  39. labels in the ext2 filesystem.
  40. If you are not using a security module that requires using
  41. extended attributes for file security labels, say N.
  42. config EXT2_FS_XIP
  43. bool "Ext2 execute in place support"
  44. depends on EXT2_FS
  45. help
  46. Execute in place can be used on memory-backed block devices. If you
  47. enable this option, you can select to mount block devices which are
  48. capable of this feature without using the page cache.
  49. If you do not use a block device that is capable of using this,
  50. or if unsure, say N.
  51. config FS_XIP
  52. # execute in place
  53. bool
  54. depends on EXT2_FS_XIP
  55. default y
  56. config EXT3_FS
  57. tristate "Ext3 journalling file system support"
  58. help
  59. This is the journaling version of the Second extended file system
  60. (often called ext3), the de facto standard Linux file system
  61. (method to organize files on a storage device) for hard disks.
  62. The journaling code included in this driver means you do not have
  63. to run e2fsck (file system checker) on your file systems after a
  64. crash. The journal keeps track of any changes that were being made
  65. at the time the system crashed, and can ensure that your file system
  66. is consistent without the need for a lengthy check.
  67. Other than adding the journal to the file system, the on-disk format
  68. of ext3 is identical to ext2. It is possible to freely switch
  69. between using the ext3 driver and the ext2 driver, as long as the
  70. file system has been cleanly unmounted, or e2fsck is run on the file
  71. system.
  72. To add a journal on an existing ext2 file system or change the
  73. behavior of ext3 file systems, you can use the tune2fs utility ("man
  74. tune2fs"). To modify attributes of files and directories on ext3
  75. file systems, use chattr ("man chattr"). You need to be using
  76. e2fsprogs version 1.20 or later in order to create ext3 journals
  77. (available at <http://sourceforge.net/projects/e2fsprogs/>).
  78. To compile this file system support as a module, choose M here: the
  79. module will be called ext3. Be aware however that the file system
  80. of your root partition (the one containing the directory /) cannot
  81. be compiled as a module, and so this may be dangerous.
  82. config EXT3_FS_XATTR
  83. bool "Ext3 extended attributes"
  84. depends on EXT3_FS
  85. default y
  86. help
  87. Extended attributes are name:value pairs associated with inodes by
  88. the kernel or by users (see the attr(5) manual page, or visit
  89. <http://acl.bestbits.at/> for details).
  90. If unsure, say N.
  91. You need this for POSIX ACL support on ext3.
  92. config EXT3_FS_POSIX_ACL
  93. bool "Ext3 POSIX Access Control Lists"
  94. depends on EXT3_FS_XATTR
  95. select FS_POSIX_ACL
  96. help
  97. Posix Access Control Lists (ACLs) support permissions for users and
  98. groups beyond the owner/group/world scheme.
  99. To learn more about Access Control Lists, visit the Posix ACLs for
  100. Linux website <http://acl.bestbits.at/>.
  101. If you don't know what Access Control Lists are, say N
  102. config EXT3_FS_SECURITY
  103. bool "Ext3 Security Labels"
  104. depends on EXT3_FS_XATTR
  105. help
  106. Security labels support alternative access control models
  107. implemented by security modules like SELinux. This option
  108. enables an extended attribute handler for file security
  109. labels in the ext3 filesystem.
  110. If you are not using a security module that requires using
  111. extended attributes for file security labels, say N.
  112. config JBD
  113. # CONFIG_JBD could be its own option (even modular), but until there are
  114. # other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
  115. # dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
  116. tristate
  117. default EXT3_FS
  118. help
  119. This is a generic journaling layer for block devices. It is
  120. currently used by the ext3 file system, but it could also be used to
  121. add journal support to other file systems or block devices such as
  122. RAID or LVM.
  123. If you are using the ext3 file system, you need to say Y here. If
  124. you are not using ext3 then you will probably want to say N.
  125. To compile this device as a module, choose M here: the module will be
  126. called jbd. If you are compiling ext3 into the kernel, you cannot
  127. compile this code as a module.
  128. config JBD_DEBUG
  129. bool "JBD (ext3) debugging support"
  130. depends on JBD
  131. help
  132. If you are using the ext3 journaled file system (or potentially any
  133. other file system/device using JBD), this option allows you to
  134. enable debugging output while the system is running, in order to
  135. help track down any problems you are having. By default the
  136. debugging output will be turned off.
  137. If you select Y here, then you will be able to turn on debugging
  138. with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
  139. 1 and 5, the higher the number, the more debugging output is
  140. generated. To turn debugging off again, do
  141. "echo 0 > /proc/sys/fs/jbd-debug".
  142. config FS_MBCACHE
  143. # Meta block cache for Extended Attributes (ext2/ext3)
  144. tristate
  145. depends on EXT2_FS_XATTR || EXT3_FS_XATTR
  146. default y if EXT2_FS=y || EXT3_FS=y
  147. default m if EXT2_FS=m || EXT3_FS=m
  148. config REISERFS_FS
  149. tristate "Reiserfs support"
  150. help
  151. Stores not just filenames but the files themselves in a balanced
  152. tree. Uses journaling.
  153. Balanced trees are more efficient than traditional file system
  154. architectural foundations.
  155. In general, ReiserFS is as fast as ext2, but is very efficient with
  156. large directories and small files. Additional patches are needed
  157. for NFS and quotas, please see <http://www.namesys.com/> for links.
  158. It is more easily extended to have features currently found in
  159. database and keyword search systems than block allocation based file
  160. systems are. The next version will be so extended, and will support
  161. plugins consistent with our motto ``It takes more than a license to
  162. make source code open.''
  163. Read <http://www.namesys.com/> to learn more about reiserfs.
  164. Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
  165. If you like it, you can pay us to add new features to it that you
  166. need, buy a support contract, or pay us to port it to another OS.
  167. config REISERFS_CHECK
  168. bool "Enable reiserfs debug mode"
  169. depends on REISERFS_FS
  170. help
  171. If you set this to Y, then ReiserFS will perform every check it can
  172. possibly imagine of its internal consistency throughout its
  173. operation. It will also go substantially slower. More than once we
  174. have forgotten that this was on, and then gone despondent over the
  175. latest benchmarks.:-) Use of this option allows our team to go all
  176. out in checking for consistency when debugging without fear of its
  177. effect on end users. If you are on the verge of sending in a bug
  178. report, say Y and you might get a useful error message. Almost
  179. everyone should say N.
  180. config REISERFS_PROC_INFO
  181. bool "Stats in /proc/fs/reiserfs"
  182. depends on REISERFS_FS
  183. help
  184. Create under /proc/fs/reiserfs a hierarchy of files, displaying
  185. various ReiserFS statistics and internal data at the expense of
  186. making your kernel or module slightly larger (+8 KB). This also
  187. increases the amount of kernel memory required for each mount.
  188. Almost everyone but ReiserFS developers and people fine-tuning
  189. reiserfs or tracing problems should say N.
  190. config REISERFS_FS_XATTR
  191. bool "ReiserFS extended attributes"
  192. depends on REISERFS_FS
  193. help
  194. Extended attributes are name:value pairs associated with inodes by
  195. the kernel or by users (see the attr(5) manual page, or visit
  196. <http://acl.bestbits.at/> for details).
  197. If unsure, say N.
  198. config REISERFS_FS_POSIX_ACL
  199. bool "ReiserFS POSIX Access Control Lists"
  200. depends on REISERFS_FS_XATTR
  201. select FS_POSIX_ACL
  202. help
  203. Posix Access Control Lists (ACLs) support permissions for users and
  204. groups beyond the owner/group/world scheme.
  205. To learn more about Access Control Lists, visit the Posix ACLs for
  206. Linux website <http://acl.bestbits.at/>.
  207. If you don't know what Access Control Lists are, say N
  208. config REISERFS_FS_SECURITY
  209. bool "ReiserFS Security Labels"
  210. depends on REISERFS_FS_XATTR
  211. help
  212. Security labels support alternative access control models
  213. implemented by security modules like SELinux. This option
  214. enables an extended attribute handler for file security
  215. labels in the ReiserFS filesystem.
  216. If you are not using a security module that requires using
  217. extended attributes for file security labels, say N.
  218. config JFS_FS
  219. tristate "JFS filesystem support"
  220. select NLS
  221. help
  222. This is a port of IBM's Journaled Filesystem . More information is
  223. available in the file <file:Documentation/filesystems/jfs.txt>.
  224. If you do not intend to use the JFS filesystem, say N.
  225. config JFS_POSIX_ACL
  226. bool "JFS POSIX Access Control Lists"
  227. depends on JFS_FS
  228. select FS_POSIX_ACL
  229. help
  230. Posix Access Control Lists (ACLs) support permissions for users and
  231. groups beyond the owner/group/world scheme.
  232. To learn more about Access Control Lists, visit the Posix ACLs for
  233. Linux website <http://acl.bestbits.at/>.
  234. If you don't know what Access Control Lists are, say N
  235. config JFS_SECURITY
  236. bool "JFS Security Labels"
  237. depends on JFS_FS
  238. help
  239. Security labels support alternative access control models
  240. implemented by security modules like SELinux. This option
  241. enables an extended attribute handler for file security
  242. labels in the jfs filesystem.
  243. If you are not using a security module that requires using
  244. extended attributes for file security labels, say N.
  245. config JFS_DEBUG
  246. bool "JFS debugging"
  247. depends on JFS_FS
  248. help
  249. If you are experiencing any problems with the JFS filesystem, say
  250. Y here. This will result in additional debugging messages to be
  251. written to the system log. Under normal circumstances, this
  252. results in very little overhead.
  253. config JFS_STATISTICS
  254. bool "JFS statistics"
  255. depends on JFS_FS
  256. help
  257. Enabling this option will cause statistics from the JFS file system
  258. to be made available to the user in the /proc/fs/jfs/ directory.
  259. config FS_POSIX_ACL
  260. # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
  261. #
  262. # NOTE: you can implement Posix ACLs without these helpers (XFS does).
  263. # Never use this symbol for ifdefs.
  264. #
  265. bool
  266. default n
  267. source "fs/xfs/Kconfig"
  268. config MINIX_FS
  269. tristate "Minix fs support"
  270. help
  271. Minix is a simple operating system used in many classes about OS's.
  272. The minix file system (method to organize files on a hard disk
  273. partition or a floppy disk) was the original file system for Linux,
  274. but has been superseded by the second extended file system ext2fs.
  275. You don't want to use the minix file system on your hard disk
  276. because of certain built-in restrictions, but it is sometimes found
  277. on older Linux floppy disks. This option will enlarge your kernel
  278. by about 28 KB. If unsure, say N.
  279. To compile this file system support as a module, choose M here: the
  280. module will be called minix. Note that the file system of your root
  281. partition (the one containing the directory /) cannot be compiled as
  282. a module.
  283. config ROMFS_FS
  284. tristate "ROM file system support"
  285. ---help---
  286. This is a very small read-only file system mainly intended for
  287. initial ram disks of installation disks, but it could be used for
  288. other read-only media as well. Read
  289. <file:Documentation/filesystems/romfs.txt> for details.
  290. To compile this file system support as a module, choose M here: the
  291. module will be called romfs. Note that the file system of your
  292. root partition (the one containing the directory /) cannot be a
  293. module.
  294. If you don't know whether you need it, then you don't need it:
  295. answer N.
  296. config INOTIFY
  297. bool "Inotify file change notification support"
  298. default y
  299. ---help---
  300. Say Y here to enable inotify support and the /dev/inotify character
  301. device. Inotify is a file change notification system and a
  302. replacement for dnotify. Inotify fixes numerous shortcomings in
  303. dnotify and introduces several new features. It allows monitoring
  304. of both files and directories via a single open fd. Multiple file
  305. events are supported.
  306. If unsure, say Y.
  307. config QUOTA
  308. bool "Quota support"
  309. help
  310. If you say Y here, you will be able to set per user limits for disk
  311. usage (also called disk quotas). Currently, it works for the
  312. ext2, ext3, and reiserfs file system. ext3 also supports journalled
  313. quotas for which you don't need to run quotacheck(8) after an unclean
  314. shutdown. You need additional software in order to use quota support
  315. (you can download sources from
  316. <http://www.sf.net/projects/linuxquota/>). For further details, read
  317. the Quota mini-HOWTO, available from
  318. <http://www.tldp.org/docs.html#howto>, or the documentation provided
  319. with the quota tools. Probably the quota support is only useful for
  320. multi user systems. If unsure, say N.
  321. config QFMT_V1
  322. tristate "Old quota format support"
  323. depends on QUOTA
  324. help
  325. This quota format was (is) used by kernels earlier than 2.4.22. If
  326. you have quota working and you don't want to convert to new quota
  327. format say Y here.
  328. config QFMT_V2
  329. tristate "Quota format v2 support"
  330. depends on QUOTA
  331. help
  332. This quota format allows using quotas with 32-bit UIDs/GIDs. If you
  333. need this functionality say Y here. Note that you will need recent
  334. quota utilities (>= 3.01) for new quota format with this kernel.
  335. config QUOTACTL
  336. bool
  337. depends on XFS_QUOTA || QUOTA
  338. default y
  339. config DNOTIFY
  340. bool "Dnotify support" if EMBEDDED
  341. default y
  342. help
  343. Dnotify is a directory-based per-fd file change notification system
  344. that uses signals to communicate events to user-space. There exist
  345. superior alternatives, but some applications may still rely on
  346. dnotify.
  347. Because of this, if unsure, say Y.
  348. config AUTOFS_FS
  349. tristate "Kernel automounter support"
  350. help
  351. The automounter is a tool to automatically mount remote file systems
  352. on demand. This implementation is partially kernel-based to reduce
  353. overhead in the already-mounted case; this is unlike the BSD
  354. automounter (amd), which is a pure user space daemon.
  355. To use the automounter you need the user-space tools from the autofs
  356. package; you can find the location in <file:Documentation/Changes>.
  357. You also want to answer Y to "NFS file system support", below.
  358. If you want to use the newer version of the automounter with more
  359. features, say N here and say Y to "Kernel automounter v4 support",
  360. below.
  361. To compile this support as a module, choose M here: the module will be
  362. called autofs.
  363. If you are not a part of a fairly large, distributed network, you
  364. probably do not need an automounter, and can say N here.
  365. config AUTOFS4_FS
  366. tristate "Kernel automounter version 4 support (also supports v3)"
  367. help
  368. The automounter is a tool to automatically mount remote file systems
  369. on demand. This implementation is partially kernel-based to reduce
  370. overhead in the already-mounted case; this is unlike the BSD
  371. automounter (amd), which is a pure user space daemon.
  372. To use the automounter you need the user-space tools from
  373. <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
  374. want to answer Y to "NFS file system support", below.
  375. To compile this support as a module, choose M here: the module will be
  376. called autofs4. You will need to add "alias autofs autofs4" to your
  377. modules configuration file.
  378. If you are not a part of a fairly large, distributed network or
  379. don't have a laptop which needs to dynamically reconfigure to the
  380. local network, you probably do not need an automounter, and can say
  381. N here.
  382. menu "CD-ROM/DVD Filesystems"
  383. config ISO9660_FS
  384. tristate "ISO 9660 CDROM file system support"
  385. help
  386. This is the standard file system used on CD-ROMs. It was previously
  387. known as "High Sierra File System" and is called "hsfs" on other
  388. Unix systems. The so-called Rock-Ridge extensions which allow for
  389. long Unix filenames and symbolic links are also supported by this
  390. driver. If you have a CD-ROM drive and want to do more with it than
  391. just listen to audio CDs and watch its LEDs, say Y (and read
  392. <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
  393. available from <http://www.tldp.org/docs.html#howto>), thereby
  394. enlarging your kernel by about 27 KB; otherwise say N.
  395. To compile this file system support as a module, choose M here: the
  396. module will be called isofs.
  397. config JOLIET
  398. bool "Microsoft Joliet CDROM extensions"
  399. depends on ISO9660_FS
  400. select NLS
  401. help
  402. Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
  403. which allows for long filenames in unicode format (unicode is the
  404. new 16 bit character code, successor to ASCII, which encodes the
  405. characters of almost all languages of the world; see
  406. <http://www.unicode.org/> for more information). Say Y here if you
  407. want to be able to read Joliet CD-ROMs under Linux.
  408. config ZISOFS
  409. bool "Transparent decompression extension"
  410. depends on ISO9660_FS
  411. select ZLIB_INFLATE
  412. help
  413. This is a Linux-specific extension to RockRidge which lets you store
  414. data in compressed form on a CD-ROM and have it transparently
  415. decompressed when the CD-ROM is accessed. See
  416. <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
  417. necessary to create such a filesystem. Say Y here if you want to be
  418. able to read such compressed CD-ROMs.
  419. config ZISOFS_FS
  420. # for fs/nls/Config.in
  421. tristate
  422. depends on ZISOFS
  423. default ISO9660_FS
  424. config UDF_FS
  425. tristate "UDF file system support"
  426. help
  427. This is the new file system used on some CD-ROMs and DVDs. Say Y if
  428. you intend to mount DVD discs or CDRW's written in packet mode, or
  429. if written to by other UDF utilities, such as DirectCD.
  430. Please read <file:Documentation/filesystems/udf.txt>.
  431. To compile this file system support as a module, choose M here: the
  432. module will be called udf.
  433. If unsure, say N.
  434. config UDF_NLS
  435. bool
  436. default y
  437. depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
  438. endmenu
  439. menu "DOS/FAT/NT Filesystems"
  440. config FAT_FS
  441. tristate
  442. select NLS
  443. help
  444. If you want to use one of the FAT-based file systems (the MS-DOS and
  445. VFAT (Windows 95) file systems), then you must say Y or M here
  446. to include FAT support. You will then be able to mount partitions or
  447. diskettes with FAT-based file systems and transparently access the
  448. files on them, i.e. MSDOS files will look and behave just like all
  449. other Unix files.
  450. This FAT support is not a file system in itself, it only provides
  451. the foundation for the other file systems. You will have to say Y or
  452. M to at least one of "MSDOS fs support" or "VFAT fs support" in
  453. order to make use of it.
  454. Another way to read and write MSDOS floppies and hard drive
  455. partitions from within Linux (but not transparently) is with the
  456. mtools ("man mtools") program suite. You don't need to say Y here in
  457. order to do that.
  458. If you need to move large files on floppies between a DOS and a
  459. Linux box, say Y here, mount the floppy under Linux with an MSDOS
  460. file system and use GNU tar's M option. GNU tar is a program
  461. available for Unix and DOS ("man tar" or "info tar").
  462. It is now also becoming possible to read and write compressed FAT
  463. file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
  464. details.
  465. The FAT support will enlarge your kernel by about 37 KB. If unsure,
  466. say Y.
  467. To compile this as a module, choose M here: the module will be called
  468. fat. Note that if you compile the FAT support as a module, you
  469. cannot compile any of the FAT-based file systems into the kernel
  470. -- they will have to be modules as well.
  471. config MSDOS_FS
  472. tristate "MSDOS fs support"
  473. select FAT_FS
  474. help
  475. This allows you to mount MSDOS partitions of your hard drive (unless
  476. they are compressed; to access compressed MSDOS partitions under
  477. Linux, you can either use the DOS emulator DOSEMU, described in the
  478. DOSEMU-HOWTO, available from
  479. <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
  480. <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
  481. intend to use dosemu with a non-compressed MSDOS partition, say Y
  482. here) and MSDOS floppies. This means that file access becomes
  483. transparent, i.e. the MSDOS files look and behave just like all
  484. other Unix files.
  485. If you have Windows 95 or Windows NT installed on your MSDOS
  486. partitions, you should use the VFAT file system (say Y to "VFAT fs
  487. support" below), or you will not be able to see the long filenames
  488. generated by Windows 95 / Windows NT.
  489. This option will enlarge your kernel by about 7 KB. If unsure,
  490. answer Y. This will only work if you said Y to "DOS FAT fs support"
  491. as well. To compile this as a module, choose M here: the module will
  492. be called msdos.
  493. config VFAT_FS
  494. tristate "VFAT (Windows-95) fs support"
  495. select FAT_FS
  496. help
  497. This option provides support for normal Windows file systems with
  498. long filenames. That includes non-compressed FAT-based file systems
  499. used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
  500. programs from the mtools package.
  501. The VFAT support enlarges your kernel by about 10 KB and it only
  502. works if you said Y to the "DOS FAT fs support" above. Please read
  503. the file <file:Documentation/filesystems/vfat.txt> for details. If
  504. unsure, say Y.
  505. To compile this as a module, choose M here: the module will be called
  506. vfat.
  507. config FAT_DEFAULT_CODEPAGE
  508. int "Default codepage for FAT"
  509. depends on MSDOS_FS || VFAT_FS
  510. default 437
  511. help
  512. This option should be set to the codepage of your FAT filesystems.
  513. It can be overridden with the "codepage" mount option.
  514. See <file:Documentation/filesystems/vfat.txt> for more information.
  515. config FAT_DEFAULT_IOCHARSET
  516. string "Default iocharset for FAT"
  517. depends on VFAT_FS
  518. default "iso8859-1"
  519. help
  520. Set this to the default input/output character set you'd
  521. like FAT to use. It should probably match the character set
  522. that most of your FAT filesystems use, and can be overridden
  523. with the "iocharset" mount option for FAT filesystems.
  524. Note that "utf8" is not recommended for FAT filesystems.
  525. If unsure, you shouldn't set "utf8" here.
  526. See <file:Documentation/filesystems/vfat.txt> for more information.
  527. config NTFS_FS
  528. tristate "NTFS file system support"
  529. select NLS
  530. help
  531. NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
  532. Saying Y or M here enables read support. There is partial, but
  533. safe, write support available. For write support you must also
  534. say Y to "NTFS write support" below.
  535. There are also a number of user-space tools available, called
  536. ntfsprogs. These include ntfsundelete and ntfsresize, that work
  537. without NTFS support enabled in the kernel.
  538. This is a rewrite from scratch of Linux NTFS support and replaced
  539. the old NTFS code starting with Linux 2.5.11. A backport to
  540. the Linux 2.4 kernel series is separately available as a patch
  541. from the project web site.
  542. For more information see <file:Documentation/filesystems/ntfs.txt>
  543. and <http://linux-ntfs.sourceforge.net/>.
  544. To compile this file system support as a module, choose M here: the
  545. module will be called ntfs.
  546. If you are not using Windows NT, 2000, XP or 2003 in addition to
  547. Linux on your computer it is safe to say N.
  548. config NTFS_DEBUG
  549. bool "NTFS debugging support"
  550. depends on NTFS_FS
  551. help
  552. If you are experiencing any problems with the NTFS file system, say
  553. Y here. This will result in additional consistency checks to be
  554. performed by the driver as well as additional debugging messages to
  555. be written to the system log. Note that debugging messages are
  556. disabled by default. To enable them, supply the option debug_msgs=1
  557. at the kernel command line when booting the kernel or as an option
  558. to insmod when loading the ntfs module. Once the driver is active,
  559. you can enable debugging messages by doing (as root):
  560. echo 1 > /proc/sys/fs/ntfs-debug
  561. Replacing the "1" with "0" would disable debug messages.
  562. If you leave debugging messages disabled, this results in little
  563. overhead, but enabling debug messages results in very significant
  564. slowdown of the system.
  565. When reporting bugs, please try to have available a full dump of
  566. debugging messages while the misbehaviour was occurring.
  567. config NTFS_RW
  568. bool "NTFS write support"
  569. depends on NTFS_FS
  570. help
  571. This enables the partial, but safe, write support in the NTFS driver.
  572. The only supported operation is overwriting existing files, without
  573. changing the file length. No file or directory creation, deletion or
  574. renaming is possible. Note only non-resident files can be written to
  575. so you may find that some very small files (<500 bytes or so) cannot
  576. be written to.
  577. While we cannot guarantee that it will not damage any data, we have
  578. so far not received a single report where the driver would have
  579. damaged someones data so we assume it is perfectly safe to use.
  580. Note: While write support is safe in this version (a rewrite from
  581. scratch of the NTFS support), it should be noted that the old NTFS
  582. write support, included in Linux 2.5.10 and before (since 1997),
  583. is not safe.
  584. This is currently useful with TopologiLinux. TopologiLinux is run
  585. on top of any DOS/Microsoft Windows system without partitioning your
  586. hard disk. Unlike other Linux distributions TopologiLinux does not
  587. need its own partition. For more information see
  588. <http://topologi-linux.sourceforge.net/>
  589. It is perfectly safe to say N here.
  590. endmenu
  591. menu "Pseudo filesystems"
  592. config PROC_FS
  593. bool "/proc file system support"
  594. help
  595. This is a virtual file system providing information about the status
  596. of the system. "Virtual" means that it doesn't take up any space on
  597. your hard disk: the files are created on the fly by the kernel when
  598. you try to access them. Also, you cannot read the files with older
  599. version of the program less: you need to use more or cat.
  600. It's totally cool; for example, "cat /proc/interrupts" gives
  601. information about what the different IRQs are used for at the moment
  602. (there is a small number of Interrupt ReQuest lines in your computer
  603. that are used by the attached devices to gain the CPU's attention --
  604. often a source of trouble if two devices are mistakenly configured
  605. to use the same IRQ). The program procinfo to display some
  606. information about your system gathered from the /proc file system.
  607. Before you can use the /proc file system, it has to be mounted,
  608. meaning it has to be given a location in the directory hierarchy.
  609. That location should be /proc. A command such as "mount -t proc proc
  610. /proc" or the equivalent line in /etc/fstab does the job.
  611. The /proc file system is explained in the file
  612. <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
  613. ("man 5 proc").
  614. This option will enlarge your kernel by about 67 KB. Several
  615. programs depend on this, so everyone should say Y here.
  616. config PROC_KCORE
  617. bool "/proc/kcore support" if !ARM
  618. depends on PROC_FS && MMU
  619. config PROC_VMCORE
  620. bool "/proc/vmcore support (EXPERIMENTAL)"
  621. depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP
  622. help
  623. Exports the dump image of crashed kernel in ELF format.
  624. config SYSFS
  625. bool "sysfs file system support" if EMBEDDED
  626. default y
  627. help
  628. The sysfs filesystem is a virtual filesystem that the kernel uses to
  629. export internal kernel objects, their attributes, and their
  630. relationships to one another.
  631. Users can use sysfs to ascertain useful information about the running
  632. kernel, such as the devices the kernel has discovered on each bus and
  633. which driver each is bound to. sysfs can also be used to tune devices
  634. and other kernel subsystems.
  635. Some system agents rely on the information in sysfs to operate.
  636. /sbin/hotplug uses device and object attributes in sysfs to assist in
  637. delegating policy decisions, like persistantly naming devices.
  638. sysfs is currently used by the block subsystem to mount the root
  639. partition. If sysfs is disabled you must specify the boot device on
  640. the kernel boot command line via its major and minor numbers. For
  641. example, "root=03:01" for /dev/hda1.
  642. Designers of embedded systems may wish to say N here to conserve space.
  643. config DEVPTS_FS_XATTR
  644. bool "/dev/pts Extended Attributes"
  645. depends on UNIX98_PTYS
  646. help
  647. Extended attributes are name:value pairs associated with inodes by
  648. the kernel or by users (see the attr(5) manual page, or visit
  649. <http://acl.bestbits.at/> for details).
  650. If unsure, say N.
  651. config DEVPTS_FS_SECURITY
  652. bool "/dev/pts Security Labels"
  653. depends on DEVPTS_FS_XATTR
  654. help
  655. Security labels support alternative access control models
  656. implemented by security modules like SELinux. This option
  657. enables an extended attribute handler for file security
  658. labels in the /dev/pts filesystem.
  659. If you are not using a security module that requires using
  660. extended attributes for file security labels, say N.
  661. config TMPFS
  662. bool "Virtual memory file system support (former shm fs)"
  663. help
  664. Tmpfs is a file system which keeps all files in virtual memory.
  665. Everything in tmpfs is temporary in the sense that no files will be
  666. created on your hard drive. The files live in memory and swap
  667. space. If you unmount a tmpfs instance, everything stored therein is
  668. lost.
  669. See <file:Documentation/filesystems/tmpfs.txt> for details.
  670. config TMPFS_XATTR
  671. bool "tmpfs Extended Attributes"
  672. depends on TMPFS
  673. help
  674. Extended attributes are name:value pairs associated with inodes by
  675. the kernel or by users (see the attr(5) manual page, or visit
  676. <http://acl.bestbits.at/> for details).
  677. If unsure, say N.
  678. config TMPFS_SECURITY
  679. bool "tmpfs Security Labels"
  680. depends on TMPFS_XATTR
  681. help
  682. Security labels support alternative access control models
  683. implemented by security modules like SELinux. This option
  684. enables an extended attribute handler for file security
  685. labels in the tmpfs filesystem.
  686. If you are not using a security module that requires using
  687. extended attributes for file security labels, say N.
  688. config HUGETLBFS
  689. bool "HugeTLB file system support"
  690. depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
  691. config HUGETLB_PAGE
  692. def_bool HUGETLBFS
  693. config RAMFS
  694. bool
  695. default y
  696. ---help---
  697. Ramfs is a file system which keeps all files in RAM. It allows
  698. read and write access.
  699. It is more of an programming example than a useable file system. If
  700. you need a file system which lives in RAM with limit checking use
  701. tmpfs.
  702. To compile this as a module, choose M here: the module will be called
  703. ramfs.
  704. endmenu
  705. menu "Miscellaneous filesystems"
  706. config ADFS_FS
  707. tristate "ADFS file system support (EXPERIMENTAL)"
  708. depends on EXPERIMENTAL
  709. help
  710. The Acorn Disc Filing System is the standard file system of the
  711. RiscOS operating system which runs on Acorn's ARM-based Risc PC
  712. systems and the Acorn Archimedes range of machines. If you say Y
  713. here, Linux will be able to read from ADFS partitions on hard drives
  714. and from ADFS-formatted floppy discs. If you also want to be able to
  715. write to those devices, say Y to "ADFS write support" below.
  716. The ADFS partition should be the first partition (i.e.,
  717. /dev/[hs]d?1) on each of your drives. Please read the file
  718. <file:Documentation/filesystems/adfs.txt> for further details.
  719. To compile this code as a module, choose M here: the module will be
  720. called adfs.
  721. If unsure, say N.
  722. config ADFS_FS_RW
  723. bool "ADFS write support (DANGEROUS)"
  724. depends on ADFS_FS
  725. help
  726. If you say Y here, you will be able to write to ADFS partitions on
  727. hard drives and ADFS-formatted floppy disks. This is experimental
  728. codes, so if you're unsure, say N.
  729. config AFFS_FS
  730. tristate "Amiga FFS file system support (EXPERIMENTAL)"
  731. depends on EXPERIMENTAL
  732. help
  733. The Fast File System (FFS) is the common file system used on hard
  734. disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
  735. if you want to be able to read and write files from and to an Amiga
  736. FFS partition on your hard drive. Amiga floppies however cannot be
  737. read with this driver due to an incompatibility of the floppy
  738. controller used in an Amiga and the standard floppy controller in
  739. PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
  740. and <file:fs/affs/Changes>.
  741. With this driver you can also mount disk files used by Bernd
  742. Schmidt's Un*X Amiga Emulator
  743. (<http://www.freiburg.linux.de/~uae/>).
  744. If you want to do this, you will also need to say Y or M to "Loop
  745. device support", above.
  746. To compile this file system support as a module, choose M here: the
  747. module will be called affs. If unsure, say N.
  748. config HFS_FS
  749. tristate "Apple Macintosh file system support (EXPERIMENTAL)"
  750. depends on EXPERIMENTAL
  751. help
  752. If you say Y here, you will be able to mount Macintosh-formatted
  753. floppy disks and hard drive partitions with full read-write access.
  754. Please read <file:fs/hfs/HFS.txt> to learn about the available mount
  755. options.
  756. To compile this file system support as a module, choose M here: the
  757. module will be called hfs.
  758. config HFSPLUS_FS
  759. tristate "Apple Extended HFS file system support"
  760. select NLS
  761. select NLS_UTF8
  762. help
  763. If you say Y here, you will be able to mount extended format
  764. Macintosh-formatted hard drive partitions with full read-write access.
  765. This file system is often called HFS+ and was introduced with
  766. MacOS 8. It includes all Mac specific filesystem data such as
  767. data forks and creator codes, but it also has several UNIX
  768. style features such as file ownership and permissions.
  769. config BEFS_FS
  770. tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
  771. depends on EXPERIMENTAL
  772. select NLS
  773. help
  774. The BeOS File System (BeFS) is the native file system of Be, Inc's
  775. BeOS. Notable features include support for arbitrary attributes
  776. on files and directories, and database-like indeces on selected
  777. attributes. (Also note that this driver doesn't make those features
  778. available at this time). It is a 64 bit filesystem, so it supports
  779. extremly large volumes and files.
  780. If you use this filesystem, you should also say Y to at least one
  781. of the NLS (native language support) options below.
  782. If you don't know what this is about, say N.
  783. To compile this as a module, choose M here: the module will be
  784. called befs.
  785. config BEFS_DEBUG
  786. bool "Debug BeFS"
  787. depends on BEFS_FS
  788. help
  789. If you say Y here, you can use the 'debug' mount option to enable
  790. debugging output from the driver.
  791. config BFS_FS
  792. tristate "BFS file system support (EXPERIMENTAL)"
  793. depends on EXPERIMENTAL
  794. help
  795. Boot File System (BFS) is a file system used under SCO UnixWare to
  796. allow the bootloader access to the kernel image and other important
  797. files during the boot process. It is usually mounted under /stand
  798. and corresponds to the slice marked as "STAND" in the UnixWare
  799. partition. You should say Y if you want to read or write the files
  800. on your /stand slice from within Linux. You then also need to say Y
  801. to "UnixWare slices support", below. More information about the BFS
  802. file system is contained in the file
  803. <file:Documentation/filesystems/bfs.txt>.
  804. If you don't know what this is about, say N.
  805. To compile this as a module, choose M here: the module will be called
  806. bfs. Note that the file system of your root partition (the one
  807. containing the directory /) cannot be compiled as a module.
  808. config EFS_FS
  809. tristate "EFS file system support (read only) (EXPERIMENTAL)"
  810. depends on EXPERIMENTAL
  811. help
  812. EFS is an older file system used for non-ISO9660 CD-ROMs and hard
  813. disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
  814. uses the XFS file system for hard disk partitions however).
  815. This implementation only offers read-only access. If you don't know
  816. what all this is about, it's safe to say N. For more information
  817. about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
  818. To compile the EFS file system support as a module, choose M here: the
  819. module will be called efs.
  820. config JFFS_FS
  821. tristate "Journalling Flash File System (JFFS) support"
  822. depends on MTD
  823. help
  824. JFFS is the Journaling Flash File System developed by Axis
  825. Communications in Sweden, aimed at providing a crash/powerdown-safe
  826. file system for disk-less embedded devices. Further information is
  827. available at (<http://developer.axis.com/software/jffs/>).
  828. config JFFS_FS_VERBOSE
  829. int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
  830. depends on JFFS_FS
  831. default "0"
  832. help
  833. Determines the verbosity level of the JFFS debugging messages.
  834. config JFFS_PROC_FS
  835. bool "JFFS stats available in /proc filesystem"
  836. depends on JFFS_FS && PROC_FS
  837. help
  838. Enabling this option will cause statistics from mounted JFFS file systems
  839. to be made available to the user in the /proc/fs/jffs/ directory.
  840. config JFFS2_FS
  841. tristate "Journalling Flash File System v2 (JFFS2) support"
  842. select CRC32
  843. depends on MTD
  844. help
  845. JFFS2 is the second generation of the Journalling Flash File System
  846. for use on diskless embedded devices. It provides improved wear
  847. levelling, compression and support for hard links. You cannot use
  848. this on normal block devices, only on 'MTD' devices.
  849. Further information on the design and implementation of JFFS2 is
  850. available at <http://sources.redhat.com/jffs2/>.
  851. config JFFS2_FS_DEBUG
  852. int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
  853. depends on JFFS2_FS
  854. default "0"
  855. help
  856. This controls the amount of debugging messages produced by the JFFS2
  857. code. Set it to zero for use in production systems. For evaluation,
  858. testing and debugging, it's advisable to set it to one. This will
  859. enable a few assertions and will print debugging messages at the
  860. KERN_DEBUG loglevel, where they won't normally be visible. Level 2
  861. is unlikely to be useful - it enables extra debugging in certain
  862. areas which at one point needed debugging, but when the bugs were
  863. located and fixed, the detailed messages were relegated to level 2.
  864. If reporting bugs, please try to have available a full dump of the
  865. messages at debug level 1 while the misbehaviour was occurring.
  866. config JFFS2_FS_WRITEBUFFER
  867. bool "JFFS2 write-buffering support"
  868. depends on JFFS2_FS
  869. default y
  870. help
  871. This enables the write-buffering support in JFFS2.
  872. This functionality is required to support JFFS2 on the following
  873. types of flash devices:
  874. - NAND flash
  875. - NOR flash with transparent ECC
  876. - DataFlash
  877. config JFFS2_COMPRESSION_OPTIONS
  878. bool "Advanced compression options for JFFS2"
  879. depends on JFFS2_FS
  880. default n
  881. help
  882. Enabling this option allows you to explicitly choose which
  883. compression modules, if any, are enabled in JFFS2. Removing
  884. compressors and mean you cannot read existing file systems,
  885. and enabling experimental compressors can mean that you
  886. write a file system which cannot be read by a standard kernel.
  887. If unsure, you should _definitely_ say 'N'.
  888. config JFFS2_ZLIB
  889. bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
  890. select ZLIB_INFLATE
  891. select ZLIB_DEFLATE
  892. depends on JFFS2_FS
  893. default y
  894. help
  895. Zlib is designed to be a free, general-purpose, legally unencumbered,
  896. lossless data-compression library for use on virtually any computer
  897. hardware and operating system. See <http://www.gzip.org/zlib/> for
  898. further information.
  899. Say 'Y' if unsure.
  900. config JFFS2_RTIME
  901. bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
  902. depends on JFFS2_FS
  903. default y
  904. help
  905. Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
  906. config JFFS2_RUBIN
  907. bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
  908. depends on JFFS2_FS
  909. default n
  910. help
  911. RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
  912. choice
  913. prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
  914. default JFFS2_CMODE_PRIORITY
  915. depends on JFFS2_FS
  916. help
  917. You can set here the default compression mode of JFFS2 from
  918. the available compression modes. Don't touch if unsure.
  919. config JFFS2_CMODE_NONE
  920. bool "no compression"
  921. help
  922. Uses no compression.
  923. config JFFS2_CMODE_PRIORITY
  924. bool "priority"
  925. help
  926. Tries the compressors in a predefinied order and chooses the first
  927. successful one.
  928. config JFFS2_CMODE_SIZE
  929. bool "size (EXPERIMENTAL)"
  930. help
  931. Tries all compressors and chooses the one which has the smallest
  932. result.
  933. endchoice
  934. config CRAMFS
  935. tristate "Compressed ROM file system support (cramfs)"
  936. select ZLIB_INFLATE
  937. help
  938. Saying Y here includes support for CramFs (Compressed ROM File
  939. System). CramFs is designed to be a simple, small, and compressed
  940. file system for ROM based embedded systems. CramFs is read-only,
  941. limited to 256MB file systems (with 16MB files), and doesn't support
  942. 16/32 bits uid/gid, hard links and timestamps.
  943. See <file:Documentation/filesystems/cramfs.txt> and
  944. <file:fs/cramfs/README> for further information.
  945. To compile this as a module, choose M here: the module will be called
  946. cramfs. Note that the root file system (the one containing the
  947. directory /) cannot be compiled as a module.
  948. If unsure, say N.
  949. config VXFS_FS
  950. tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
  951. help
  952. FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
  953. file system format. VERITAS VxFS(TM) is the standard file system
  954. of SCO UnixWare (and possibly others) and optionally available
  955. for Sunsoft Solaris, HP-UX and many other operating systems.
  956. Currently only readonly access is supported.
  957. NOTE: the file system type as used by mount(1), mount(2) and
  958. fstab(5) is 'vxfs' as it describes the file system format, not
  959. the actual driver.
  960. To compile this as a module, choose M here: the module will be
  961. called freevxfs. If unsure, say N.
  962. config HPFS_FS
  963. tristate "OS/2 HPFS file system support"
  964. help
  965. OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  966. is the file system used for organizing files on OS/2 hard disk
  967. partitions. Say Y if you want to be able to read files from and
  968. write files to an OS/2 HPFS partition on your hard drive. OS/2
  969. floppies however are in regular MSDOS format, so you don't need this
  970. option in order to be able to read them. Read
  971. <file:Documentation/filesystems/hpfs.txt>.
  972. To compile this file system support as a module, choose M here: the
  973. module will be called hpfs. If unsure, say N.
  974. config QNX4FS_FS
  975. tristate "QNX4 file system support (read only)"
  976. help
  977. This is the file system used by the real-time operating systems
  978. QNX 4 and QNX 6 (the latter is also called QNX RTP).
  979. Further information is available at <http://www.qnx.com/>.
  980. Say Y if you intend to mount QNX hard disks or floppies.
  981. Unless you say Y to "QNX4FS read-write support" below, you will
  982. only be able to read these file systems.
  983. To compile this file system support as a module, choose M here: the
  984. module will be called qnx4.
  985. If you don't know whether you need it, then you don't need it:
  986. answer N.
  987. config QNX4FS_RW
  988. bool "QNX4FS write support (DANGEROUS)"
  989. depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
  990. help
  991. Say Y if you want to test write support for QNX4 file systems.
  992. It's currently broken, so for now:
  993. answer N.
  994. config SYSV_FS
  995. tristate "System V/Xenix/V7/Coherent file system support"
  996. help
  997. SCO, Xenix and Coherent are commercial Unix systems for Intel
  998. machines, and Version 7 was used on the DEC PDP-11. Saying Y
  999. here would allow you to read from their floppies and hard disk
  1000. partitions.
  1001. If you have floppies or hard disk partitions like that, it is likely
  1002. that they contain binaries from those other Unix systems; in order
  1003. to run these binaries, you will want to install linux-abi which is a
  1004. a set of kernel modules that lets you run SCO, Xenix, Wyse,
  1005. UnixWare, Dell Unix and System V programs under Linux. It is
  1006. available via FTP (user: ftp) from
  1007. <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
  1008. NOTE: that will work only for binaries from Intel-based systems;
  1009. PDP ones will have to wait until somebody ports Linux to -11 ;-)
  1010. If you only intend to mount files from some other Unix over the
  1011. network using NFS, you don't need the System V file system support
  1012. (but 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"). Note also that this option has
  1017. nothing whatsoever to do with the option "System V IPC". Read about
  1018. the System V file system in
  1019. <file:Documentation/filesystems/sysv-fs.txt>.
  1020. Saying Y here will enlarge your kernel by about 27 KB.
  1021. To compile this as a module, choose M here: the module will be called
  1022. sysv.
  1023. If you haven't heard about all of this before, it's safe to say N.
  1024. config UFS_FS
  1025. tristate "UFS file system support (read only)"
  1026. help
  1027. BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
  1028. OpenBSD and NeXTstep) use a file system called UFS. Some System V
  1029. Unixes can create and mount hard disk partitions and diskettes using
  1030. this file system as well. Saying Y here will allow you to read from
  1031. these partitions; if you also want to write to them, say Y to the
  1032. experimental "UFS file system write support", below. Please read the
  1033. file <file:Documentation/filesystems/ufs.txt> for more information.
  1034. The recently released UFS2 variant (used in FreeBSD 5.x) is
  1035. READ-ONLY supported.
  1036. If you only intend to mount files from some other Unix over the
  1037. network using NFS, you don't need the UFS file system support (but
  1038. you need NFS file system support obviously).
  1039. Note that this option is generally not needed for floppies, since a
  1040. good portable way to transport files and directories between unixes
  1041. (and even other operating systems) is given by the tar program ("man
  1042. tar" or preferably "info tar").
  1043. When accessing NeXTstep files, you may need to convert them from the
  1044. NeXT character set to the Latin1 character set; use the program
  1045. recode ("info recode") for this purpose.
  1046. To compile the UFS file system support as a module, choose M here: the
  1047. module will be called ufs.
  1048. If you haven't heard about all of this before, it's safe to say N.
  1049. config UFS_FS_WRITE
  1050. bool "UFS file system write support (DANGEROUS)"
  1051. depends on UFS_FS && EXPERIMENTAL
  1052. help
  1053. Say Y here if you want to try writing to UFS partitions. This is
  1054. experimental, so you should back up your UFS partitions beforehand.
  1055. endmenu
  1056. menu "Network File Systems"
  1057. depends on NET
  1058. config NFS_FS
  1059. tristate "NFS file system support"
  1060. depends on INET
  1061. select LOCKD
  1062. select SUNRPC
  1063. select NFS_ACL_SUPPORT if NFS_V3_ACL
  1064. help
  1065. If you are connected to some other (usually local) Unix computer
  1066. (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
  1067. on that computer (the NFS server) using the Network File Sharing
  1068. protocol, say Y. "Mounting files" means that the client can access
  1069. the files with usual UNIX commands as if they were sitting on the
  1070. client's hard disk. For this to work, the server must run the
  1071. programs nfsd and mountd (but does not need to have NFS file system
  1072. support enabled in its kernel). NFS is explained in the Network
  1073. Administrator's Guide, available from
  1074. <http://www.tldp.org/docs.html#guide>, on its man page: "man
  1075. nfs", and in the NFS-HOWTO.
  1076. A superior but less widely used alternative to NFS is provided by
  1077. the Coda file system; see "Coda file system support" below.
  1078. If you say Y here, you should have said Y to TCP/IP networking also.
  1079. This option would enlarge your kernel by about 27 KB.
  1080. To compile this file system support as a module, choose M here: the
  1081. module will be called nfs.
  1082. If you are configuring a diskless machine which will mount its root
  1083. file system over NFS at boot time, say Y here and to "Kernel
  1084. level IP autoconfiguration" above and to "Root file system on NFS"
  1085. below. You cannot compile this driver as a module in this case.
  1086. There are two packages designed for booting diskless machines over
  1087. the net: netboot, available from
  1088. <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
  1089. available from <http://ftp1.sourceforge.net/etherboot/>.
  1090. If you don't know what all this is about, say N.
  1091. config NFS_V3
  1092. bool "Provide NFSv3 client support"
  1093. depends on NFS_FS
  1094. help
  1095. Say Y here if you want your NFS client to be able to speak version
  1096. 3 of the NFS protocol.
  1097. If unsure, say Y.
  1098. config NFS_V3_ACL
  1099. bool "Provide client support for the NFSv3 ACL protocol extension"
  1100. depends on NFS_V3
  1101. help
  1102. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1103. Access Control Lists. The server should also be compiled with
  1104. the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
  1105. If unsure, say N.
  1106. config NFS_V4
  1107. bool "Provide NFSv4 client support (EXPERIMENTAL)"
  1108. depends on NFS_FS && EXPERIMENTAL
  1109. select RPCSEC_GSS_KRB5
  1110. help
  1111. Say Y here if you want your NFS client to be able to speak the newer
  1112. version 4 of the NFS protocol.
  1113. Note: Requires auxiliary userspace daemons which may be found on
  1114. http://www.citi.umich.edu/projects/nfsv4/
  1115. If unsure, say N.
  1116. config NFS_DIRECTIO
  1117. bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
  1118. depends on NFS_FS && EXPERIMENTAL
  1119. help
  1120. This option enables applications to perform uncached I/O on files
  1121. in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
  1122. is set for a file, its data is not cached in the system's page
  1123. cache. Data is moved to and from user-level application buffers
  1124. directly. Unlike local disk-based file systems, NFS O_DIRECT has
  1125. no alignment restrictions.
  1126. Unless your program is designed to use O_DIRECT properly, you are
  1127. much better off allowing the NFS client to manage data caching for
  1128. you. Misusing O_DIRECT can cause poor server performance or network
  1129. storms. This kernel build option defaults OFF to avoid exposing
  1130. system administrators unwittingly to a potentially hazardous
  1131. feature.
  1132. For more details on NFS O_DIRECT, see fs/nfs/direct.c.
  1133. If unsure, say N. This reduces the size of the NFS client, and
  1134. causes open() to return EINVAL if a file residing in NFS is
  1135. opened with the O_DIRECT flag.
  1136. config NFSD
  1137. tristate "NFS server support"
  1138. depends on INET
  1139. select LOCKD
  1140. select SUNRPC
  1141. select EXPORTFS
  1142. select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
  1143. help
  1144. If you want your Linux box to act as an NFS *server*, so that other
  1145. computers on your local network which support NFS can access certain
  1146. directories on your box transparently, you have two options: you can
  1147. use the self-contained user space program nfsd, in which case you
  1148. should say N here, or you can say Y and use the kernel based NFS
  1149. server. The advantage of the kernel based solution is that it is
  1150. faster.
  1151. In either case, you will need support software; the respective
  1152. locations are given in the file <file:Documentation/Changes> in the
  1153. NFS section.
  1154. If you say Y here, you will get support for version 2 of the NFS
  1155. protocol (NFSv2). If you also want NFSv3, say Y to the next question
  1156. as well.
  1157. Please read the NFS-HOWTO, available from
  1158. <http://www.tldp.org/docs.html#howto>.
  1159. To compile the NFS server support as a module, choose M here: the
  1160. module will be called nfsd. If unsure, say N.
  1161. config NFSD_V2_ACL
  1162. bool
  1163. depends on NFSD
  1164. config NFSD_V3
  1165. bool "Provide NFSv3 server support"
  1166. depends on NFSD
  1167. help
  1168. If you would like to include the NFSv3 server as well as the NFSv2
  1169. server, say Y here. If unsure, say Y.
  1170. config NFSD_V3_ACL
  1171. bool "Provide server support for the NFSv3 ACL protocol extension"
  1172. depends on NFSD_V3
  1173. select NFSD_V2_ACL
  1174. help
  1175. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1176. Access Control Lists on exported file systems. NFS clients should
  1177. be compiled with the NFSv3 ACL protocol extension; see the
  1178. CONFIG_NFS_V3_ACL option. If unsure, say N.
  1179. config NFSD_V4
  1180. bool "Provide NFSv4 server support (EXPERIMENTAL)"
  1181. depends on NFSD_V3 && EXPERIMENTAL
  1182. select NFSD_TCP
  1183. select CRYPTO_MD5
  1184. select CRYPTO
  1185. select FS_POSIX_ACL
  1186. help
  1187. If you would like to include the NFSv4 server as well as the NFSv2
  1188. and NFSv3 servers, say Y here. This feature is experimental, and
  1189. should only be used if you are interested in helping to test NFSv4.
  1190. If unsure, say N.
  1191. config NFSD_TCP
  1192. bool "Provide NFS server over TCP support"
  1193. depends on NFSD
  1194. default y
  1195. help
  1196. If you want your NFS server to support TCP connections, say Y here.
  1197. TCP connections usually perform better than the default UDP when
  1198. the network is lossy or congested. If unsure, say Y.
  1199. config ROOT_NFS
  1200. bool "Root file system on NFS"
  1201. depends on NFS_FS=y && IP_PNP
  1202. help
  1203. If you want your Linux box to mount its whole root file system (the
  1204. one containing the directory /) from some other computer over the
  1205. net via NFS (presumably because your box doesn't have a hard disk),
  1206. say Y. Read <file:Documentation/nfsroot.txt> for details. It is
  1207. likely that in this case, you also want to say Y to "Kernel level IP
  1208. autoconfiguration" so that your box can discover its network address
  1209. at boot time.
  1210. Most people say N here.
  1211. config LOCKD
  1212. tristate
  1213. config LOCKD_V4
  1214. bool
  1215. depends on NFSD_V3 || NFS_V3
  1216. default y
  1217. config EXPORTFS
  1218. tristate
  1219. config NFS_ACL_SUPPORT
  1220. tristate
  1221. select FS_POSIX_ACL
  1222. config NFS_COMMON
  1223. bool
  1224. depends on NFSD || NFS_FS
  1225. default y
  1226. config SUNRPC
  1227. tristate
  1228. config SUNRPC_GSS
  1229. tristate
  1230. config RPCSEC_GSS_KRB5
  1231. tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
  1232. depends on SUNRPC && EXPERIMENTAL
  1233. select SUNRPC_GSS
  1234. select CRYPTO
  1235. select CRYPTO_MD5
  1236. select CRYPTO_DES
  1237. help
  1238. Provides for secure RPC calls by means of a gss-api
  1239. mechanism based on Kerberos V5. This is required for
  1240. NFSv4.
  1241. Note: Requires an auxiliary userspace daemon which may be found on
  1242. http://www.citi.umich.edu/projects/nfsv4/
  1243. If unsure, say N.
  1244. config RPCSEC_GSS_SPKM3
  1245. tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
  1246. depends on SUNRPC && EXPERIMENTAL
  1247. select SUNRPC_GSS
  1248. select CRYPTO
  1249. select CRYPTO_MD5
  1250. select CRYPTO_DES
  1251. help
  1252. Provides for secure RPC calls by means of a gss-api
  1253. mechanism based on the SPKM3 public-key mechanism.
  1254. Note: Requires an auxiliary userspace daemon which may be found on
  1255. http://www.citi.umich.edu/projects/nfsv4/
  1256. If unsure, say N.
  1257. config SMB_FS
  1258. tristate "SMB file system support (to mount Windows shares etc.)"
  1259. depends on INET
  1260. select NLS
  1261. help
  1262. SMB (Server Message Block) is the protocol Windows for Workgroups
  1263. (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
  1264. files and printers over local networks. Saying Y here allows you to
  1265. mount their file systems (often called "shares" in this context) and
  1266. access them just like any other Unix directory. Currently, this
  1267. works only if the Windows machines use TCP/IP as the underlying
  1268. transport protocol, and not NetBEUI. For details, read
  1269. <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
  1270. available from <http://www.tldp.org/docs.html#howto>.
  1271. Note: if you just want your box to act as an SMB *server* and make
  1272. files and printing services available to Windows clients (which need
  1273. to have a TCP/IP stack), you don't need to say Y here; you can use
  1274. the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
  1275. for that.
  1276. General information about how to connect Linux, Windows machines and
  1277. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1278. To compile the SMB support as a module, choose M here: the module will
  1279. be called smbfs. Most people say N, however.
  1280. config SMB_NLS_DEFAULT
  1281. bool "Use a default NLS"
  1282. depends on SMB_FS
  1283. help
  1284. Enabling this will make smbfs use nls translations by default. You
  1285. need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
  1286. settings and you need to give the default nls for the SMB server as
  1287. CONFIG_SMB_NLS_REMOTE.
  1288. The nls settings can be changed at mount time, if your smbmount
  1289. supports that, using the codepage and iocharset parameters.
  1290. smbmount from samba 2.2.0 or later supports this.
  1291. config SMB_NLS_REMOTE
  1292. string "Default Remote NLS Option"
  1293. depends on SMB_NLS_DEFAULT
  1294. default "cp437"
  1295. help
  1296. This setting allows you to specify a default value for which
  1297. codepage the server uses. If this field is left blank no
  1298. translations will be done by default. The local codepage/charset
  1299. default to CONFIG_NLS_DEFAULT.
  1300. The nls settings can be changed at mount time, if your smbmount
  1301. supports that, using the codepage and iocharset parameters.
  1302. smbmount from samba 2.2.0 or later supports this.
  1303. config CIFS
  1304. tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
  1305. depends on INET
  1306. select NLS
  1307. help
  1308. This is the client VFS module for the Common Internet File System
  1309. (CIFS) protocol which is the successor to the Server Message Block
  1310. (SMB) protocol, the native file sharing mechanism for most early
  1311. PC operating systems. The CIFS protocol is fully supported by
  1312. file servers such as Windows 2000 (including Windows 2003, NT 4
  1313. and Windows XP) as well by Samba (which provides excellent CIFS
  1314. server support for Linux and many other operating systems). Currently
  1315. you must use the smbfs client filesystem to access older SMB servers
  1316. such as Windows 9x and OS/2.
  1317. The intent of the cifs module is to provide an advanced
  1318. network file system client for mounting to CIFS compliant servers,
  1319. including support for dfs (hierarchical name space), secure per-user
  1320. session establishment, safe distributed caching (oplock), optional
  1321. packet signing, Unicode and other internationalization improvements,
  1322. and optional Winbind (nsswitch) integration. You do not need to enable
  1323. cifs if running only a (Samba) server. It is possible to enable both
  1324. smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
  1325. and Samba 3 servers, and smbfs for accessing old servers). If you need
  1326. to mount to Samba or Windows 2003 servers from this machine, say Y.
  1327. config CIFS_STATS
  1328. bool "CIFS statistics"
  1329. depends on CIFS
  1330. help
  1331. Enabling this option will cause statistics for each server share
  1332. mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
  1333. config CIFS_XATTR
  1334. bool "CIFS extended attributes (EXPERIMENTAL)"
  1335. depends on CIFS
  1336. help
  1337. Extended attributes are name:value pairs associated with inodes by
  1338. the kernel or by users (see the attr(5) manual page, or visit
  1339. <http://acl.bestbits.at/> for details). CIFS maps the name of
  1340. extended attributes beginning with the user namespace prefix
  1341. to SMB/CIFS EAs. EAs are stored on Windows servers without the
  1342. user namespace prefix, but their names are seen by Linux cifs clients
  1343. prefaced by the user namespace prefix. The system namespace
  1344. (used by some filesystems to store ACLs) is not supported at
  1345. this time.
  1346. If unsure, say N.
  1347. config CIFS_POSIX
  1348. bool "CIFS POSIX Extensions (EXPERIMENTAL)"
  1349. depends on CIFS_XATTR
  1350. help
  1351. Enabling this option will cause the cifs client to attempt to
  1352. negotiate a newer dialect with servers, such as Samba 3.0.5
  1353. or later, that optionally can handle more POSIX like (rather
  1354. than Windows like) file behavior. It also enables
  1355. support for POSIX ACLs (getfacl and setfacl) to servers
  1356. (such as Samba 3.10 and later) which can negotiate
  1357. CIFS POSIX ACL support. If unsure, say N.
  1358. config CIFS_EXPERIMENTAL
  1359. bool "CIFS Experimental Features (EXPERIMENTAL)"
  1360. depends on CIFS
  1361. help
  1362. Enables cifs features under testing. These features
  1363. are highly experimental. If unsure, say N.
  1364. config NCP_FS
  1365. tristate "NCP file system support (to mount NetWare volumes)"
  1366. depends on IPX!=n || INET
  1367. help
  1368. NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  1369. used by Novell NetWare clients to talk to file servers. It is to
  1370. IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
  1371. to mount NetWare file server volumes and to access them just like
  1372. any other Unix directory. For details, please read the file
  1373. <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
  1374. the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
  1375. You do not have to say Y here if you want your Linux box to act as a
  1376. file *server* for Novell NetWare clients.
  1377. General information about how to connect Linux, Windows machines and
  1378. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1379. To compile this as a module, choose M here: the module will be called
  1380. ncpfs. Say N unless you are connected to a Novell network.
  1381. source "fs/ncpfs/Kconfig"
  1382. config CODA_FS
  1383. tristate "Coda file system support (advanced network fs)"
  1384. depends on INET
  1385. help
  1386. Coda is an advanced network file system, similar to NFS in that it
  1387. enables you to mount file systems of a remote server and access them
  1388. with regular Unix commands as if they were sitting on your hard
  1389. disk. Coda has several advantages over NFS: support for
  1390. disconnected operation (e.g. for laptops), read/write server
  1391. replication, security model for authentication and encryption,
  1392. persistent client caches and write back caching.
  1393. If you say Y here, your Linux box will be able to act as a Coda
  1394. *client*. You will need user level code as well, both for the
  1395. client and server. Servers are currently user level, i.e. they need
  1396. no kernel support. Please read
  1397. <file:Documentation/filesystems/coda.txt> and check out the Coda
  1398. home page <http://www.coda.cs.cmu.edu/>.
  1399. To compile the coda client support as a module, choose M here: the
  1400. module will be called coda.
  1401. config CODA_FS_OLD_API
  1402. bool "Use 96-bit Coda file identifiers"
  1403. depends on CODA_FS
  1404. help
  1405. A new kernel-userspace API had to be introduced for Coda v6.0
  1406. to support larger 128-bit file identifiers as needed by the
  1407. new realms implementation.
  1408. However this new API is not backward compatible with older
  1409. clients. If you really need to run the old Coda userspace
  1410. cache manager then say Y.
  1411. For most cases you probably want to say N.
  1412. config AFS_FS
  1413. # for fs/nls/Config.in
  1414. tristate "Andrew File System support (AFS) (Experimental)"
  1415. depends on INET && EXPERIMENTAL
  1416. select RXRPC
  1417. help
  1418. If you say Y here, you will get an experimental Andrew File System
  1419. driver. It currently only supports unsecured read-only AFS access.
  1420. See <file:Documentation/filesystems/afs.txt> for more intormation.
  1421. If unsure, say N.
  1422. config RXRPC
  1423. tristate
  1424. endmenu
  1425. menu "Partition Types"
  1426. source "fs/partitions/Kconfig"
  1427. endmenu
  1428. source "fs/nls/Kconfig"
  1429. endmenu