Kconfig 76 KB

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  1. #
  2. # File system configuration
  3. #
  4. menu "File systems"
  5. if BLOCK
  6. config EXT2_FS
  7. tristate "Second extended fs support"
  8. help
  9. Ext2 is a standard Linux file system for hard disks.
  10. To compile this file system support as a module, choose M here: the
  11. module will be called ext2.
  12. If unsure, say Y.
  13. config EXT2_FS_XATTR
  14. bool "Ext2 extended attributes"
  15. depends on EXT2_FS
  16. help
  17. Extended attributes are name:value pairs associated with inodes by
  18. the kernel or by users (see the attr(5) manual page, or visit
  19. <http://acl.bestbits.at/> for details).
  20. If unsure, say N.
  21. config EXT2_FS_POSIX_ACL
  22. bool "Ext2 POSIX Access Control Lists"
  23. depends on EXT2_FS_XATTR
  24. select FS_POSIX_ACL
  25. help
  26. Posix Access Control Lists (ACLs) support permissions for users and
  27. groups beyond the owner/group/world scheme.
  28. To learn more about Access Control Lists, visit the Posix ACLs for
  29. Linux website <http://acl.bestbits.at/>.
  30. If you don't know what Access Control Lists are, say N
  31. config EXT2_FS_SECURITY
  32. bool "Ext2 Security Labels"
  33. depends on EXT2_FS_XATTR
  34. help
  35. Security labels support alternative access control models
  36. implemented by security modules like SELinux. This option
  37. enables an extended attribute handler for file security
  38. labels in the ext2 filesystem.
  39. If you are not using a security module that requires using
  40. extended attributes for file security labels, say N.
  41. config EXT2_FS_XIP
  42. bool "Ext2 execute in place support"
  43. depends on EXT2_FS && MMU
  44. help
  45. Execute in place can be used on memory-backed block devices. If you
  46. enable this option, you can select to mount block devices which are
  47. capable of this feature without using the page cache.
  48. If you do not use a block device that is capable of using this,
  49. or if unsure, say N.
  50. config FS_XIP
  51. # execute in place
  52. bool
  53. depends on EXT2_FS_XIP
  54. default y
  55. config EXT3_FS
  56. tristate "Ext3 journalling file system support"
  57. select JBD
  58. help
  59. This is the journalling 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 journalling 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.
  80. config EXT3_FS_XATTR
  81. bool "Ext3 extended attributes"
  82. depends on EXT3_FS
  83. default y
  84. help
  85. Extended attributes are name:value pairs associated with inodes by
  86. the kernel or by users (see the attr(5) manual page, or visit
  87. <http://acl.bestbits.at/> for details).
  88. If unsure, say N.
  89. You need this for POSIX ACL support on ext3.
  90. config EXT3_FS_POSIX_ACL
  91. bool "Ext3 POSIX Access Control Lists"
  92. depends on EXT3_FS_XATTR
  93. select FS_POSIX_ACL
  94. help
  95. Posix Access Control Lists (ACLs) support permissions for users and
  96. groups beyond the owner/group/world scheme.
  97. To learn more about Access Control Lists, visit the Posix ACLs for
  98. Linux website <http://acl.bestbits.at/>.
  99. If you don't know what Access Control Lists are, say N
  100. config EXT3_FS_SECURITY
  101. bool "Ext3 Security Labels"
  102. depends on EXT3_FS_XATTR
  103. help
  104. Security labels support alternative access control models
  105. implemented by security modules like SELinux. This option
  106. enables an extended attribute handler for file security
  107. labels in the ext3 filesystem.
  108. If you are not using a security module that requires using
  109. extended attributes for file security labels, say N.
  110. config EXT4_FS
  111. tristate "The Extended 4 (ext4) filesystem"
  112. select JBD2
  113. select CRC16
  114. help
  115. This is the next generation of the ext3 filesystem.
  116. Unlike the change from ext2 filesystem to ext3 filesystem,
  117. the on-disk format of ext4 is not forwards compatible with
  118. ext3; it is based on extent maps and it supports 48-bit
  119. physical block numbers. The ext4 filesystem also supports delayed
  120. allocation, persistent preallocation, high resolution time stamps,
  121. and a number of other features to improve performance and speed
  122. up fsck time. For more information, please see the web pages at
  123. http://ext4.wiki.kernel.org.
  124. The ext4 filesystem will support mounting an ext3
  125. filesystem; while there will be some performance gains from
  126. the delayed allocation and inode table readahead, the best
  127. performance gains will require enabling ext4 features in the
  128. filesystem, or formating a new filesystem as an ext4
  129. filesystem initially.
  130. To compile this file system support as a module, choose M here. The
  131. module will be called ext4dev.
  132. If unsure, say N.
  133. config EXT4DEV_COMPAT
  134. bool "Enable ext4dev compatibility"
  135. depends on EXT4_FS
  136. help
  137. Starting with 2.6.28, the name of the ext4 filesystem was
  138. renamed from ext4dev to ext4. Unfortunately there are some
  139. legacy userspace programs (such as klibc's fstype) have
  140. "ext4dev" hardcoded.
  141. To enable backwards compatibility so that systems that are
  142. still expecting to mount ext4 filesystems using ext4dev,
  143. chose Y here. This feature will go away by 2.6.31, so
  144. please arrange to get your userspace programs fixed!
  145. config EXT4_FS_XATTR
  146. bool "Ext4 extended attributes"
  147. depends on EXT4_FS
  148. default y
  149. help
  150. Extended attributes are name:value pairs associated with inodes by
  151. the kernel or by users (see the attr(5) manual page, or visit
  152. <http://acl.bestbits.at/> for details).
  153. If unsure, say N.
  154. You need this for POSIX ACL support on ext4.
  155. config EXT4_FS_POSIX_ACL
  156. bool "Ext4 POSIX Access Control Lists"
  157. depends on EXT4_FS_XATTR
  158. select FS_POSIX_ACL
  159. help
  160. POSIX Access Control Lists (ACLs) support permissions for users and
  161. groups beyond the owner/group/world scheme.
  162. To learn more about Access Control Lists, visit the POSIX ACLs for
  163. Linux website <http://acl.bestbits.at/>.
  164. If you don't know what Access Control Lists are, say N
  165. config EXT4_FS_SECURITY
  166. bool "Ext4 Security Labels"
  167. depends on EXT4_FS_XATTR
  168. help
  169. Security labels support alternative access control models
  170. implemented by security modules like SELinux. This option
  171. enables an extended attribute handler for file security
  172. labels in the ext4 filesystem.
  173. If you are not using a security module that requires using
  174. extended attributes for file security labels, say N.
  175. config JBD
  176. tristate
  177. help
  178. This is a generic journalling layer for block devices. It is
  179. currently used by the ext3 file system, but it could also be
  180. used to add journal support to other file systems or block
  181. devices such as RAID or LVM.
  182. If you are using the ext3 file system, you need to say Y here.
  183. If you are not using ext3 then you will probably want to say N.
  184. To compile this device as a module, choose M here: the module will be
  185. called jbd. If you are compiling ext3 into the kernel, you
  186. cannot compile this code as a module.
  187. config JBD_DEBUG
  188. bool "JBD (ext3) debugging support"
  189. depends on JBD && DEBUG_FS
  190. help
  191. If you are using the ext3 journaled file system (or potentially any
  192. other file system/device using JBD), this option allows you to
  193. enable debugging output while the system is running, in order to
  194. help track down any problems you are having. By default the
  195. debugging output will be turned off.
  196. If you select Y here, then you will be able to turn on debugging
  197. with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a
  198. number between 1 and 5, the higher the number, the more debugging
  199. output is generated. To turn debugging off again, do
  200. "echo 0 > /sys/kernel/debug/jbd/jbd-debug".
  201. config JBD2
  202. tristate
  203. select CRC32
  204. help
  205. This is a generic journaling layer for block devices that support
  206. both 32-bit and 64-bit block numbers. It is currently used by
  207. the ext4 and OCFS2 filesystems, but it could also be used to add
  208. journal support to other file systems or block devices such
  209. as RAID or LVM.
  210. If you are using ext4 or OCFS2, you need to say Y here.
  211. If you are not using ext4 or OCFS2 then you will
  212. probably want to say N.
  213. To compile this device as a module, choose M here. The module will be
  214. called jbd2. If you are compiling ext4 or OCFS2 into the kernel,
  215. you cannot compile this code as a module.
  216. config JBD2_DEBUG
  217. bool "JBD2 (ext4) debugging support"
  218. depends on JBD2 && DEBUG_FS
  219. help
  220. If you are using the ext4 journaled file system (or
  221. potentially any other filesystem/device using JBD2), this option
  222. allows you to enable debugging output while the system is running,
  223. in order to help track down any problems you are having.
  224. By default, the debugging output will be turned off.
  225. If you select Y here, then you will be able to turn on debugging
  226. with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
  227. number between 1 and 5. The higher the number, the more debugging
  228. output is generated. To turn debugging off again, do
  229. "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
  230. config FS_MBCACHE
  231. # Meta block cache for Extended Attributes (ext2/ext3/ext4)
  232. tristate
  233. depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR
  234. default y if EXT2_FS=y || EXT3_FS=y || EXT4_FS=y
  235. default m if EXT2_FS=m || EXT3_FS=m || EXT4_FS=m
  236. config REISERFS_FS
  237. tristate "Reiserfs support"
  238. help
  239. Stores not just filenames but the files themselves in a balanced
  240. tree. Uses journalling.
  241. Balanced trees are more efficient than traditional file system
  242. architectural foundations.
  243. In general, ReiserFS is as fast as ext2, but is very efficient with
  244. large directories and small files. Additional patches are needed
  245. for NFS and quotas, please see <http://www.namesys.com/> for links.
  246. It is more easily extended to have features currently found in
  247. database and keyword search systems than block allocation based file
  248. systems are. The next version will be so extended, and will support
  249. plugins consistent with our motto ``It takes more than a license to
  250. make source code open.''
  251. Read <http://www.namesys.com/> to learn more about reiserfs.
  252. Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
  253. If you like it, you can pay us to add new features to it that you
  254. need, buy a support contract, or pay us to port it to another OS.
  255. config REISERFS_CHECK
  256. bool "Enable reiserfs debug mode"
  257. depends on REISERFS_FS
  258. help
  259. If you set this to Y, then ReiserFS will perform every check it can
  260. possibly imagine of its internal consistency throughout its
  261. operation. It will also go substantially slower. More than once we
  262. have forgotten that this was on, and then gone despondent over the
  263. latest benchmarks.:-) Use of this option allows our team to go all
  264. out in checking for consistency when debugging without fear of its
  265. effect on end users. If you are on the verge of sending in a bug
  266. report, say Y and you might get a useful error message. Almost
  267. everyone should say N.
  268. config REISERFS_PROC_INFO
  269. bool "Stats in /proc/fs/reiserfs"
  270. depends on REISERFS_FS && PROC_FS
  271. help
  272. Create under /proc/fs/reiserfs a hierarchy of files, displaying
  273. various ReiserFS statistics and internal data at the expense of
  274. making your kernel or module slightly larger (+8 KB). This also
  275. increases the amount of kernel memory required for each mount.
  276. Almost everyone but ReiserFS developers and people fine-tuning
  277. reiserfs or tracing problems should say N.
  278. config REISERFS_FS_XATTR
  279. bool "ReiserFS extended attributes"
  280. depends on REISERFS_FS
  281. help
  282. Extended attributes are name:value pairs associated with inodes by
  283. the kernel or by users (see the attr(5) manual page, or visit
  284. <http://acl.bestbits.at/> for details).
  285. If unsure, say N.
  286. config REISERFS_FS_POSIX_ACL
  287. bool "ReiserFS POSIX Access Control Lists"
  288. depends on REISERFS_FS_XATTR
  289. select FS_POSIX_ACL
  290. help
  291. Posix Access Control Lists (ACLs) support permissions for users and
  292. groups beyond the owner/group/world scheme.
  293. To learn more about Access Control Lists, visit the Posix ACLs for
  294. Linux website <http://acl.bestbits.at/>.
  295. If you don't know what Access Control Lists are, say N
  296. config REISERFS_FS_SECURITY
  297. bool "ReiserFS Security Labels"
  298. depends on REISERFS_FS_XATTR
  299. help
  300. Security labels support alternative access control models
  301. implemented by security modules like SELinux. This option
  302. enables an extended attribute handler for file security
  303. labels in the ReiserFS filesystem.
  304. If you are not using a security module that requires using
  305. extended attributes for file security labels, say N.
  306. config JFS_FS
  307. tristate "JFS filesystem support"
  308. select NLS
  309. help
  310. This is a port of IBM's Journaled Filesystem . More information is
  311. available in the file <file:Documentation/filesystems/jfs.txt>.
  312. If you do not intend to use the JFS filesystem, say N.
  313. config JFS_POSIX_ACL
  314. bool "JFS POSIX Access Control Lists"
  315. depends on JFS_FS
  316. select FS_POSIX_ACL
  317. help
  318. Posix Access Control Lists (ACLs) support permissions for users and
  319. groups beyond the owner/group/world scheme.
  320. To learn more about Access Control Lists, visit the Posix ACLs for
  321. Linux website <http://acl.bestbits.at/>.
  322. If you don't know what Access Control Lists are, say N
  323. config JFS_SECURITY
  324. bool "JFS Security Labels"
  325. depends on JFS_FS
  326. help
  327. Security labels support alternative access control models
  328. implemented by security modules like SELinux. This option
  329. enables an extended attribute handler for file security
  330. labels in the jfs filesystem.
  331. If you are not using a security module that requires using
  332. extended attributes for file security labels, say N.
  333. config JFS_DEBUG
  334. bool "JFS debugging"
  335. depends on JFS_FS
  336. help
  337. If you are experiencing any problems with the JFS filesystem, say
  338. Y here. This will result in additional debugging messages to be
  339. written to the system log. Under normal circumstances, this
  340. results in very little overhead.
  341. config JFS_STATISTICS
  342. bool "JFS statistics"
  343. depends on JFS_FS
  344. help
  345. Enabling this option will cause statistics from the JFS file system
  346. to be made available to the user in the /proc/fs/jfs/ directory.
  347. config FS_POSIX_ACL
  348. # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
  349. #
  350. # NOTE: you can implement Posix ACLs without these helpers (XFS does).
  351. # Never use this symbol for ifdefs.
  352. #
  353. bool
  354. default n
  355. config FILE_LOCKING
  356. bool "Enable POSIX file locking API" if EMBEDDED
  357. default y
  358. help
  359. This option enables standard file locking support, required
  360. for filesystems like NFS and for the flock() system
  361. call. Disabling this option saves about 11k.
  362. source "fs/xfs/Kconfig"
  363. source "fs/gfs2/Kconfig"
  364. config OCFS2_FS
  365. tristate "OCFS2 file system support"
  366. depends on NET && SYSFS
  367. select CONFIGFS_FS
  368. select JBD2
  369. select CRC32
  370. help
  371. OCFS2 is a general purpose extent based shared disk cluster file
  372. system with many similarities to ext3. It supports 64 bit inode
  373. numbers, and has automatically extending metadata groups which may
  374. also make it attractive for non-clustered use.
  375. You'll want to install the ocfs2-tools package in order to at least
  376. get "mount.ocfs2".
  377. Project web page: http://oss.oracle.com/projects/ocfs2
  378. Tools web page: http://oss.oracle.com/projects/ocfs2-tools
  379. OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
  380. For more information on OCFS2, see the file
  381. <file:Documentation/filesystems/ocfs2.txt>.
  382. config OCFS2_FS_O2CB
  383. tristate "O2CB Kernelspace Clustering"
  384. depends on OCFS2_FS
  385. default y
  386. help
  387. OCFS2 includes a simple kernelspace clustering package, the OCFS2
  388. Cluster Base. It only requires a very small userspace component
  389. to configure it. This comes with the standard ocfs2-tools package.
  390. O2CB is limited to maintaining a cluster for OCFS2 file systems.
  391. It cannot manage any other cluster applications.
  392. It is always safe to say Y here, as the clustering method is
  393. run-time selectable.
  394. config OCFS2_FS_USERSPACE_CLUSTER
  395. tristate "OCFS2 Userspace Clustering"
  396. depends on OCFS2_FS && DLM
  397. default y
  398. help
  399. This option will allow OCFS2 to use userspace clustering services
  400. in conjunction with the DLM in fs/dlm. If you are using a
  401. userspace cluster manager, say Y here.
  402. It is safe to say Y, as the clustering method is run-time
  403. selectable.
  404. config OCFS2_FS_STATS
  405. bool "OCFS2 statistics"
  406. depends on OCFS2_FS
  407. default y
  408. help
  409. This option allows some fs statistics to be captured. Enabling
  410. this option may increase the memory consumption.
  411. config OCFS2_DEBUG_MASKLOG
  412. bool "OCFS2 logging support"
  413. depends on OCFS2_FS
  414. default y
  415. help
  416. The ocfs2 filesystem has an extensive logging system. The system
  417. allows selection of events to log via files in /sys/o2cb/logmask/.
  418. This option will enlarge your kernel, but it allows debugging of
  419. ocfs2 filesystem issues.
  420. config OCFS2_DEBUG_FS
  421. bool "OCFS2 expensive checks"
  422. depends on OCFS2_FS
  423. default n
  424. help
  425. This option will enable expensive consistency checks. Enable
  426. this option for debugging only as it is likely to decrease
  427. performance of the filesystem.
  428. config OCFS2_COMPAT_JBD
  429. bool "Use JBD for compatibility"
  430. depends on OCFS2_FS
  431. default n
  432. select JBD
  433. help
  434. The ocfs2 filesystem now uses JBD2 for its journalling. JBD2
  435. is backwards compatible with JBD. It is safe to say N here.
  436. However, if you really want to use the original JBD, say Y here.
  437. endif # BLOCK
  438. config DNOTIFY
  439. bool "Dnotify support"
  440. default y
  441. help
  442. Dnotify is a directory-based per-fd file change notification system
  443. that uses signals to communicate events to user-space. There exist
  444. superior alternatives, but some applications may still rely on
  445. dnotify.
  446. If unsure, say Y.
  447. config INOTIFY
  448. bool "Inotify file change notification support"
  449. default y
  450. ---help---
  451. Say Y here to enable inotify support. Inotify is a file change
  452. notification system and a replacement for dnotify. Inotify fixes
  453. numerous shortcomings in dnotify and introduces several new features
  454. including multiple file events, one-shot support, and unmount
  455. notification.
  456. For more information, see <file:Documentation/filesystems/inotify.txt>
  457. If unsure, say Y.
  458. config INOTIFY_USER
  459. bool "Inotify support for userspace"
  460. depends on INOTIFY
  461. default y
  462. ---help---
  463. Say Y here to enable inotify support for userspace, including the
  464. associated system calls. Inotify allows monitoring of both files and
  465. directories via a single open fd. Events are read from the file
  466. descriptor, which is also select()- and poll()-able.
  467. For more information, see <file:Documentation/filesystems/inotify.txt>
  468. If unsure, say Y.
  469. config QUOTA
  470. bool "Quota support"
  471. help
  472. If you say Y here, you will be able to set per user limits for disk
  473. usage (also called disk quotas). Currently, it works for the
  474. ext2, ext3, and reiserfs file system. ext3 also supports journalled
  475. quotas for which you don't need to run quotacheck(8) after an unclean
  476. shutdown.
  477. For further details, read the Quota mini-HOWTO, available from
  478. <http://www.tldp.org/docs.html#howto>, or the documentation provided
  479. with the quota tools. Probably the quota support is only useful for
  480. multi user systems. If unsure, say N.
  481. config QUOTA_NETLINK_INTERFACE
  482. bool "Report quota messages through netlink interface"
  483. depends on QUOTA && NET
  484. help
  485. If you say Y here, quota warnings (about exceeding softlimit, reaching
  486. hardlimit, etc.) will be reported through netlink interface. If unsure,
  487. say Y.
  488. config PRINT_QUOTA_WARNING
  489. bool "Print quota warnings to console (OBSOLETE)"
  490. depends on QUOTA
  491. default y
  492. help
  493. If you say Y here, quota warnings (about exceeding softlimit, reaching
  494. hardlimit, etc.) will be printed to the process' controlling terminal.
  495. Note that this behavior is currently deprecated and may go away in
  496. future. Please use notification via netlink socket instead.
  497. config QFMT_V1
  498. tristate "Old quota format support"
  499. depends on QUOTA
  500. help
  501. This quota format was (is) used by kernels earlier than 2.4.22. If
  502. you have quota working and you don't want to convert to new quota
  503. format say Y here.
  504. config QFMT_V2
  505. tristate "Quota format v2 support"
  506. depends on QUOTA
  507. help
  508. This quota format allows using quotas with 32-bit UIDs/GIDs. If you
  509. need this functionality say Y here.
  510. config QUOTACTL
  511. bool
  512. depends on XFS_QUOTA || QUOTA
  513. default y
  514. config AUTOFS_FS
  515. tristate "Kernel automounter support"
  516. help
  517. The automounter is a tool to automatically mount remote file systems
  518. on demand. This implementation is partially kernel-based to reduce
  519. overhead in the already-mounted case; this is unlike the BSD
  520. automounter (amd), which is a pure user space daemon.
  521. To use the automounter you need the user-space tools from the autofs
  522. package; you can find the location in <file:Documentation/Changes>.
  523. You also want to answer Y to "NFS file system support", below.
  524. If you want to use the newer version of the automounter with more
  525. features, say N here and say Y to "Kernel automounter v4 support",
  526. below.
  527. To compile this support as a module, choose M here: the module will be
  528. called autofs.
  529. If you are not a part of a fairly large, distributed network, you
  530. probably do not need an automounter, and can say N here.
  531. config AUTOFS4_FS
  532. tristate "Kernel automounter version 4 support (also supports v3)"
  533. help
  534. The automounter is a tool to automatically mount remote file systems
  535. on demand. This implementation is partially kernel-based to reduce
  536. overhead in the already-mounted case; this is unlike the BSD
  537. automounter (amd), which is a pure user space daemon.
  538. To use the automounter you need the user-space tools from
  539. <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
  540. want to answer Y to "NFS file system support", below.
  541. To compile this support as a module, choose M here: the module will be
  542. called autofs4. You will need to add "alias autofs autofs4" to your
  543. modules configuration file.
  544. If you are not a part of a fairly large, distributed network or
  545. don't have a laptop which needs to dynamically reconfigure to the
  546. local network, you probably do not need an automounter, and can say
  547. N here.
  548. config FUSE_FS
  549. tristate "Filesystem in Userspace support"
  550. help
  551. With FUSE it is possible to implement a fully functional filesystem
  552. in a userspace program.
  553. There's also companion library: libfuse. This library along with
  554. utilities is available from the FUSE homepage:
  555. <http://fuse.sourceforge.net/>
  556. See <file:Documentation/filesystems/fuse.txt> for more information.
  557. See <file:Documentation/Changes> for needed library/utility version.
  558. If you want to develop a userspace FS, or if you want to use
  559. a filesystem based on FUSE, answer Y or M.
  560. config GENERIC_ACL
  561. bool
  562. select FS_POSIX_ACL
  563. if BLOCK
  564. menu "CD-ROM/DVD Filesystems"
  565. config ISO9660_FS
  566. tristate "ISO 9660 CDROM file system support"
  567. help
  568. This is the standard file system used on CD-ROMs. It was previously
  569. known as "High Sierra File System" and is called "hsfs" on other
  570. Unix systems. The so-called Rock-Ridge extensions which allow for
  571. long Unix filenames and symbolic links are also supported by this
  572. driver. If you have a CD-ROM drive and want to do more with it than
  573. just listen to audio CDs and watch its LEDs, say Y (and read
  574. <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
  575. available from <http://www.tldp.org/docs.html#howto>), thereby
  576. enlarging your kernel by about 27 KB; otherwise say N.
  577. To compile this file system support as a module, choose M here: the
  578. module will be called isofs.
  579. config JOLIET
  580. bool "Microsoft Joliet CDROM extensions"
  581. depends on ISO9660_FS
  582. select NLS
  583. help
  584. Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
  585. which allows for long filenames in unicode format (unicode is the
  586. new 16 bit character code, successor to ASCII, which encodes the
  587. characters of almost all languages of the world; see
  588. <http://www.unicode.org/> for more information). Say Y here if you
  589. want to be able to read Joliet CD-ROMs under Linux.
  590. config ZISOFS
  591. bool "Transparent decompression extension"
  592. depends on ISO9660_FS
  593. select ZLIB_INFLATE
  594. help
  595. This is a Linux-specific extension to RockRidge which lets you store
  596. data in compressed form on a CD-ROM and have it transparently
  597. decompressed when the CD-ROM is accessed. See
  598. <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
  599. necessary to create such a filesystem. Say Y here if you want to be
  600. able to read such compressed CD-ROMs.
  601. config UDF_FS
  602. tristate "UDF file system support"
  603. select CRC_ITU_T
  604. help
  605. This is the new file system used on some CD-ROMs and DVDs. Say Y if
  606. you intend to mount DVD discs or CDRW's written in packet mode, or
  607. if written to by other UDF utilities, such as DirectCD.
  608. Please read <file:Documentation/filesystems/udf.txt>.
  609. To compile this file system support as a module, choose M here: the
  610. module will be called udf.
  611. If unsure, say N.
  612. config UDF_NLS
  613. bool
  614. default y
  615. depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
  616. endmenu
  617. endif # BLOCK
  618. if BLOCK
  619. menu "DOS/FAT/NT Filesystems"
  620. config FAT_FS
  621. tristate
  622. select NLS
  623. help
  624. If you want to use one of the FAT-based file systems (the MS-DOS and
  625. VFAT (Windows 95) file systems), then you must say Y or M here
  626. to include FAT support. You will then be able to mount partitions or
  627. diskettes with FAT-based file systems and transparently access the
  628. files on them, i.e. MSDOS files will look and behave just like all
  629. other Unix files.
  630. This FAT support is not a file system in itself, it only provides
  631. the foundation for the other file systems. You will have to say Y or
  632. M to at least one of "MSDOS fs support" or "VFAT fs support" in
  633. order to make use of it.
  634. Another way to read and write MSDOS floppies and hard drive
  635. partitions from within Linux (but not transparently) is with the
  636. mtools ("man mtools") program suite. You don't need to say Y here in
  637. order to do that.
  638. If you need to move large files on floppies between a DOS and a
  639. Linux box, say Y here, mount the floppy under Linux with an MSDOS
  640. file system and use GNU tar's M option. GNU tar is a program
  641. available for Unix and DOS ("man tar" or "info tar").
  642. The FAT support will enlarge your kernel by about 37 KB. If unsure,
  643. say Y.
  644. To compile this as a module, choose M here: the module will be called
  645. fat. Note that if you compile the FAT support as a module, you
  646. cannot compile any of the FAT-based file systems into the kernel
  647. -- they will have to be modules as well.
  648. config MSDOS_FS
  649. tristate "MSDOS fs support"
  650. select FAT_FS
  651. help
  652. This allows you to mount MSDOS partitions of your hard drive (unless
  653. they are compressed; to access compressed MSDOS partitions under
  654. Linux, you can either use the DOS emulator DOSEMU, described in the
  655. DOSEMU-HOWTO, available from
  656. <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
  657. <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
  658. intend to use dosemu with a non-compressed MSDOS partition, say Y
  659. here) and MSDOS floppies. This means that file access becomes
  660. transparent, i.e. the MSDOS files look and behave just like all
  661. other Unix files.
  662. If you have Windows 95 or Windows NT installed on your MSDOS
  663. partitions, you should use the VFAT file system (say Y to "VFAT fs
  664. support" below), or you will not be able to see the long filenames
  665. generated by Windows 95 / Windows NT.
  666. This option will enlarge your kernel by about 7 KB. If unsure,
  667. answer Y. This will only work if you said Y to "DOS FAT fs support"
  668. as well. To compile this as a module, choose M here: the module will
  669. be called msdos.
  670. config VFAT_FS
  671. tristate "VFAT (Windows-95) fs support"
  672. select FAT_FS
  673. help
  674. This option provides support for normal Windows file systems with
  675. long filenames. That includes non-compressed FAT-based file systems
  676. used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
  677. programs from the mtools package.
  678. The VFAT support enlarges your kernel by about 10 KB and it only
  679. works if you said Y to the "DOS FAT fs support" above. Please read
  680. the file <file:Documentation/filesystems/vfat.txt> for details. If
  681. unsure, say Y.
  682. To compile this as a module, choose M here: the module will be called
  683. vfat.
  684. config FAT_DEFAULT_CODEPAGE
  685. int "Default codepage for FAT"
  686. depends on MSDOS_FS || VFAT_FS
  687. default 437
  688. help
  689. This option should be set to the codepage of your FAT filesystems.
  690. It can be overridden with the "codepage" mount option.
  691. See <file:Documentation/filesystems/vfat.txt> for more information.
  692. config FAT_DEFAULT_IOCHARSET
  693. string "Default iocharset for FAT"
  694. depends on VFAT_FS
  695. default "iso8859-1"
  696. help
  697. Set this to the default input/output character set you'd
  698. like FAT to use. It should probably match the character set
  699. that most of your FAT filesystems use, and can be overridden
  700. with the "iocharset" mount option for FAT filesystems.
  701. Note that "utf8" is not recommended for FAT filesystems.
  702. If unsure, you shouldn't set "utf8" here.
  703. See <file:Documentation/filesystems/vfat.txt> for more information.
  704. config NTFS_FS
  705. tristate "NTFS file system support"
  706. select NLS
  707. help
  708. NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
  709. Saying Y or M here enables read support. There is partial, but
  710. safe, write support available. For write support you must also
  711. say Y to "NTFS write support" below.
  712. There are also a number of user-space tools available, called
  713. ntfsprogs. These include ntfsundelete and ntfsresize, that work
  714. without NTFS support enabled in the kernel.
  715. This is a rewrite from scratch of Linux NTFS support and replaced
  716. the old NTFS code starting with Linux 2.5.11. A backport to
  717. the Linux 2.4 kernel series is separately available as a patch
  718. from the project web site.
  719. For more information see <file:Documentation/filesystems/ntfs.txt>
  720. and <http://www.linux-ntfs.org/>.
  721. To compile this file system support as a module, choose M here: the
  722. module will be called ntfs.
  723. If you are not using Windows NT, 2000, XP or 2003 in addition to
  724. Linux on your computer it is safe to say N.
  725. config NTFS_DEBUG
  726. bool "NTFS debugging support"
  727. depends on NTFS_FS
  728. help
  729. If you are experiencing any problems with the NTFS file system, say
  730. Y here. This will result in additional consistency checks to be
  731. performed by the driver as well as additional debugging messages to
  732. be written to the system log. Note that debugging messages are
  733. disabled by default. To enable them, supply the option debug_msgs=1
  734. at the kernel command line when booting the kernel or as an option
  735. to insmod when loading the ntfs module. Once the driver is active,
  736. you can enable debugging messages by doing (as root):
  737. echo 1 > /proc/sys/fs/ntfs-debug
  738. Replacing the "1" with "0" would disable debug messages.
  739. If you leave debugging messages disabled, this results in little
  740. overhead, but enabling debug messages results in very significant
  741. slowdown of the system.
  742. When reporting bugs, please try to have available a full dump of
  743. debugging messages while the misbehaviour was occurring.
  744. config NTFS_RW
  745. bool "NTFS write support"
  746. depends on NTFS_FS
  747. help
  748. This enables the partial, but safe, write support in the NTFS driver.
  749. The only supported operation is overwriting existing files, without
  750. changing the file length. No file or directory creation, deletion or
  751. renaming is possible. Note only non-resident files can be written to
  752. so you may find that some very small files (<500 bytes or so) cannot
  753. be written to.
  754. While we cannot guarantee that it will not damage any data, we have
  755. so far not received a single report where the driver would have
  756. damaged someones data so we assume it is perfectly safe to use.
  757. Note: While write support is safe in this version (a rewrite from
  758. scratch of the NTFS support), it should be noted that the old NTFS
  759. write support, included in Linux 2.5.10 and before (since 1997),
  760. is not safe.
  761. This is currently useful with TopologiLinux. TopologiLinux is run
  762. on top of any DOS/Microsoft Windows system without partitioning your
  763. hard disk. Unlike other Linux distributions TopologiLinux does not
  764. need its own partition. For more information see
  765. <http://topologi-linux.sourceforge.net/>
  766. It is perfectly safe to say N here.
  767. endmenu
  768. endif # BLOCK
  769. menu "Pseudo filesystems"
  770. source "fs/proc/Kconfig"
  771. config SYSFS
  772. bool "sysfs file system support" if EMBEDDED
  773. default y
  774. help
  775. The sysfs filesystem is a virtual filesystem that the kernel uses to
  776. export internal kernel objects, their attributes, and their
  777. relationships to one another.
  778. Users can use sysfs to ascertain useful information about the running
  779. kernel, such as the devices the kernel has discovered on each bus and
  780. which driver each is bound to. sysfs can also be used to tune devices
  781. and other kernel subsystems.
  782. Some system agents rely on the information in sysfs to operate.
  783. /sbin/hotplug uses device and object attributes in sysfs to assist in
  784. delegating policy decisions, like persistently naming devices.
  785. sysfs is currently used by the block subsystem to mount the root
  786. partition. If sysfs is disabled you must specify the boot device on
  787. the kernel boot command line via its major and minor numbers. For
  788. example, "root=03:01" for /dev/hda1.
  789. Designers of embedded systems may wish to say N here to conserve space.
  790. config TMPFS
  791. bool "Virtual memory file system support (former shm fs)"
  792. help
  793. Tmpfs is a file system which keeps all files in virtual memory.
  794. Everything in tmpfs is temporary in the sense that no files will be
  795. created on your hard drive. The files live in memory and swap
  796. space. If you unmount a tmpfs instance, everything stored therein is
  797. lost.
  798. See <file:Documentation/filesystems/tmpfs.txt> for details.
  799. config TMPFS_POSIX_ACL
  800. bool "Tmpfs POSIX Access Control Lists"
  801. depends on TMPFS
  802. select GENERIC_ACL
  803. help
  804. POSIX Access Control Lists (ACLs) support permissions for users and
  805. groups beyond the owner/group/world scheme.
  806. To learn more about Access Control Lists, visit the POSIX ACLs for
  807. Linux website <http://acl.bestbits.at/>.
  808. If you don't know what Access Control Lists are, say N.
  809. config HUGETLBFS
  810. bool "HugeTLB file system support"
  811. depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
  812. (S390 && 64BIT) || BROKEN
  813. help
  814. hugetlbfs is a filesystem backing for HugeTLB pages, based on
  815. ramfs. For architectures that support it, say Y here and read
  816. <file:Documentation/vm/hugetlbpage.txt> for details.
  817. If unsure, say N.
  818. config HUGETLB_PAGE
  819. def_bool HUGETLBFS
  820. config CONFIGFS_FS
  821. tristate "Userspace-driven configuration filesystem"
  822. depends on SYSFS
  823. help
  824. configfs is a ram-based filesystem that provides the converse
  825. of sysfs's functionality. Where sysfs is a filesystem-based
  826. view of kernel objects, configfs is a filesystem-based manager
  827. of kernel objects, or config_items.
  828. Both sysfs and configfs can and should exist together on the
  829. same system. One is not a replacement for the other.
  830. endmenu
  831. menu "Miscellaneous filesystems"
  832. config ADFS_FS
  833. tristate "ADFS file system support (EXPERIMENTAL)"
  834. depends on BLOCK && EXPERIMENTAL
  835. help
  836. The Acorn Disc Filing System is the standard file system of the
  837. RiscOS operating system which runs on Acorn's ARM-based Risc PC
  838. systems and the Acorn Archimedes range of machines. If you say Y
  839. here, Linux will be able to read from ADFS partitions on hard drives
  840. and from ADFS-formatted floppy discs. If you also want to be able to
  841. write to those devices, say Y to "ADFS write support" below.
  842. The ADFS partition should be the first partition (i.e.,
  843. /dev/[hs]d?1) on each of your drives. Please read the file
  844. <file:Documentation/filesystems/adfs.txt> for further details.
  845. To compile this code as a module, choose M here: the module will be
  846. called adfs.
  847. If unsure, say N.
  848. config ADFS_FS_RW
  849. bool "ADFS write support (DANGEROUS)"
  850. depends on ADFS_FS
  851. help
  852. If you say Y here, you will be able to write to ADFS partitions on
  853. hard drives and ADFS-formatted floppy disks. This is experimental
  854. codes, so if you're unsure, say N.
  855. config AFFS_FS
  856. tristate "Amiga FFS file system support (EXPERIMENTAL)"
  857. depends on BLOCK && EXPERIMENTAL
  858. help
  859. The Fast File System (FFS) is the common file system used on hard
  860. disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
  861. if you want to be able to read and write files from and to an Amiga
  862. FFS partition on your hard drive. Amiga floppies however cannot be
  863. read with this driver due to an incompatibility of the floppy
  864. controller used in an Amiga and the standard floppy controller in
  865. PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
  866. and <file:fs/affs/Changes>.
  867. With this driver you can also mount disk files used by Bernd
  868. Schmidt's Un*X Amiga Emulator
  869. (<http://www.freiburg.linux.de/~uae/>).
  870. If you want to do this, you will also need to say Y or M to "Loop
  871. device support", above.
  872. To compile this file system support as a module, choose M here: the
  873. module will be called affs. If unsure, say N.
  874. config ECRYPT_FS
  875. tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
  876. depends on EXPERIMENTAL && KEYS && CRYPTO && NET
  877. help
  878. Encrypted filesystem that operates on the VFS layer. See
  879. <file:Documentation/filesystems/ecryptfs.txt> to learn more about
  880. eCryptfs. Userspace components are required and can be
  881. obtained from <http://ecryptfs.sf.net>.
  882. To compile this file system support as a module, choose M here: the
  883. module will be called ecryptfs.
  884. config HFS_FS
  885. tristate "Apple Macintosh file system support (EXPERIMENTAL)"
  886. depends on BLOCK && EXPERIMENTAL
  887. select NLS
  888. help
  889. If you say Y here, you will be able to mount Macintosh-formatted
  890. floppy disks and hard drive partitions with full read-write access.
  891. Please read <file:Documentation/filesystems/hfs.txt> to learn about
  892. the available mount options.
  893. To compile this file system support as a module, choose M here: the
  894. module will be called hfs.
  895. config HFSPLUS_FS
  896. tristate "Apple Extended HFS file system support"
  897. depends on BLOCK
  898. select NLS
  899. select NLS_UTF8
  900. help
  901. If you say Y here, you will be able to mount extended format
  902. Macintosh-formatted hard drive partitions with full read-write access.
  903. This file system is often called HFS+ and was introduced with
  904. MacOS 8. It includes all Mac specific filesystem data such as
  905. data forks and creator codes, but it also has several UNIX
  906. style features such as file ownership and permissions.
  907. config BEFS_FS
  908. tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
  909. depends on BLOCK && EXPERIMENTAL
  910. select NLS
  911. help
  912. The BeOS File System (BeFS) is the native file system of Be, Inc's
  913. BeOS. Notable features include support for arbitrary attributes
  914. on files and directories, and database-like indices on selected
  915. attributes. (Also note that this driver doesn't make those features
  916. available at this time). It is a 64 bit filesystem, so it supports
  917. extremely large volumes and files.
  918. If you use this filesystem, you should also say Y to at least one
  919. of the NLS (native language support) options below.
  920. If you don't know what this is about, say N.
  921. To compile this as a module, choose M here: the module will be
  922. called befs.
  923. config BEFS_DEBUG
  924. bool "Debug BeFS"
  925. depends on BEFS_FS
  926. help
  927. If you say Y here, you can use the 'debug' mount option to enable
  928. debugging output from the driver.
  929. config BFS_FS
  930. tristate "BFS file system support (EXPERIMENTAL)"
  931. depends on BLOCK && EXPERIMENTAL
  932. help
  933. Boot File System (BFS) is a file system used under SCO UnixWare to
  934. allow the bootloader access to the kernel image and other important
  935. files during the boot process. It is usually mounted under /stand
  936. and corresponds to the slice marked as "STAND" in the UnixWare
  937. partition. You should say Y if you want to read or write the files
  938. on your /stand slice from within Linux. You then also need to say Y
  939. to "UnixWare slices support", below. More information about the BFS
  940. file system is contained in the file
  941. <file:Documentation/filesystems/bfs.txt>.
  942. If you don't know what this is about, say N.
  943. To compile this as a module, choose M here: the module will be called
  944. bfs. Note that the file system of your root partition (the one
  945. containing the directory /) cannot be compiled as a module.
  946. config EFS_FS
  947. tristate "EFS file system support (read only) (EXPERIMENTAL)"
  948. depends on BLOCK && EXPERIMENTAL
  949. help
  950. EFS is an older file system used for non-ISO9660 CD-ROMs and hard
  951. disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
  952. uses the XFS file system for hard disk partitions however).
  953. This implementation only offers read-only access. If you don't know
  954. what all this is about, it's safe to say N. For more information
  955. about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
  956. To compile the EFS file system support as a module, choose M here: the
  957. module will be called efs.
  958. config JFFS2_FS
  959. tristate "Journalling Flash File System v2 (JFFS2) support"
  960. select CRC32
  961. depends on MTD
  962. help
  963. JFFS2 is the second generation of the Journalling Flash File System
  964. for use on diskless embedded devices. It provides improved wear
  965. levelling, compression and support for hard links. You cannot use
  966. this on normal block devices, only on 'MTD' devices.
  967. Further information on the design and implementation of JFFS2 is
  968. available at <http://sources.redhat.com/jffs2/>.
  969. config JFFS2_FS_DEBUG
  970. int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
  971. depends on JFFS2_FS
  972. default "0"
  973. help
  974. This controls the amount of debugging messages produced by the JFFS2
  975. code. Set it to zero for use in production systems. For evaluation,
  976. testing and debugging, it's advisable to set it to one. This will
  977. enable a few assertions and will print debugging messages at the
  978. KERN_DEBUG loglevel, where they won't normally be visible. Level 2
  979. is unlikely to be useful - it enables extra debugging in certain
  980. areas which at one point needed debugging, but when the bugs were
  981. located and fixed, the detailed messages were relegated to level 2.
  982. If reporting bugs, please try to have available a full dump of the
  983. messages at debug level 1 while the misbehaviour was occurring.
  984. config JFFS2_FS_WRITEBUFFER
  985. bool "JFFS2 write-buffering support"
  986. depends on JFFS2_FS
  987. default y
  988. help
  989. This enables the write-buffering support in JFFS2.
  990. This functionality is required to support JFFS2 on the following
  991. types of flash devices:
  992. - NAND flash
  993. - NOR flash with transparent ECC
  994. - DataFlash
  995. config JFFS2_FS_WBUF_VERIFY
  996. bool "Verify JFFS2 write-buffer reads"
  997. depends on JFFS2_FS_WRITEBUFFER
  998. default n
  999. help
  1000. This causes JFFS2 to read back every page written through the
  1001. write-buffer, and check for errors.
  1002. config JFFS2_SUMMARY
  1003. bool "JFFS2 summary support (EXPERIMENTAL)"
  1004. depends on JFFS2_FS && EXPERIMENTAL
  1005. default n
  1006. help
  1007. This feature makes it possible to use summary information
  1008. for faster filesystem mount.
  1009. The summary information can be inserted into a filesystem image
  1010. by the utility 'sumtool'.
  1011. If unsure, say 'N'.
  1012. config JFFS2_FS_XATTR
  1013. bool "JFFS2 XATTR support (EXPERIMENTAL)"
  1014. depends on JFFS2_FS && EXPERIMENTAL
  1015. default n
  1016. help
  1017. Extended attributes are name:value pairs associated with inodes by
  1018. the kernel or by users (see the attr(5) manual page, or visit
  1019. <http://acl.bestbits.at/> for details).
  1020. If unsure, say N.
  1021. config JFFS2_FS_POSIX_ACL
  1022. bool "JFFS2 POSIX Access Control Lists"
  1023. depends on JFFS2_FS_XATTR
  1024. default y
  1025. select FS_POSIX_ACL
  1026. help
  1027. Posix Access Control Lists (ACLs) support permissions for users and
  1028. groups beyond the owner/group/world scheme.
  1029. To learn more about Access Control Lists, visit the Posix ACLs for
  1030. Linux website <http://acl.bestbits.at/>.
  1031. If you don't know what Access Control Lists are, say N
  1032. config JFFS2_FS_SECURITY
  1033. bool "JFFS2 Security Labels"
  1034. depends on JFFS2_FS_XATTR
  1035. default y
  1036. help
  1037. Security labels support alternative access control models
  1038. implemented by security modules like SELinux. This option
  1039. enables an extended attribute handler for file security
  1040. labels in the jffs2 filesystem.
  1041. If you are not using a security module that requires using
  1042. extended attributes for file security labels, say N.
  1043. config JFFS2_COMPRESSION_OPTIONS
  1044. bool "Advanced compression options for JFFS2"
  1045. depends on JFFS2_FS
  1046. default n
  1047. help
  1048. Enabling this option allows you to explicitly choose which
  1049. compression modules, if any, are enabled in JFFS2. Removing
  1050. compressors can mean you cannot read existing file systems,
  1051. and enabling experimental compressors can mean that you
  1052. write a file system which cannot be read by a standard kernel.
  1053. If unsure, you should _definitely_ say 'N'.
  1054. config JFFS2_ZLIB
  1055. bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
  1056. select ZLIB_INFLATE
  1057. select ZLIB_DEFLATE
  1058. depends on JFFS2_FS
  1059. default y
  1060. help
  1061. Zlib is designed to be a free, general-purpose, legally unencumbered,
  1062. lossless data-compression library for use on virtually any computer
  1063. hardware and operating system. See <http://www.gzip.org/zlib/> for
  1064. further information.
  1065. Say 'Y' if unsure.
  1066. config JFFS2_LZO
  1067. bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
  1068. select LZO_COMPRESS
  1069. select LZO_DECOMPRESS
  1070. depends on JFFS2_FS
  1071. default n
  1072. help
  1073. minilzo-based compression. Generally works better than Zlib.
  1074. This feature was added in July, 2007. Say 'N' if you need
  1075. compatibility with older bootloaders or kernels.
  1076. config JFFS2_RTIME
  1077. bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
  1078. depends on JFFS2_FS
  1079. default y
  1080. help
  1081. Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
  1082. config JFFS2_RUBIN
  1083. bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
  1084. depends on JFFS2_FS
  1085. default n
  1086. help
  1087. RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
  1088. choice
  1089. prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
  1090. default JFFS2_CMODE_PRIORITY
  1091. depends on JFFS2_FS
  1092. help
  1093. You can set here the default compression mode of JFFS2 from
  1094. the available compression modes. Don't touch if unsure.
  1095. config JFFS2_CMODE_NONE
  1096. bool "no compression"
  1097. help
  1098. Uses no compression.
  1099. config JFFS2_CMODE_PRIORITY
  1100. bool "priority"
  1101. help
  1102. Tries the compressors in a predefined order and chooses the first
  1103. successful one.
  1104. config JFFS2_CMODE_SIZE
  1105. bool "size (EXPERIMENTAL)"
  1106. help
  1107. Tries all compressors and chooses the one which has the smallest
  1108. result.
  1109. config JFFS2_CMODE_FAVOURLZO
  1110. bool "Favour LZO"
  1111. help
  1112. Tries all compressors and chooses the one which has the smallest
  1113. result but gives some preference to LZO (which has faster
  1114. decompression) at the expense of size.
  1115. endchoice
  1116. # UBIFS File system configuration
  1117. source "fs/ubifs/Kconfig"
  1118. config CRAMFS
  1119. tristate "Compressed ROM file system support (cramfs)"
  1120. depends on BLOCK
  1121. select ZLIB_INFLATE
  1122. help
  1123. Saying Y here includes support for CramFs (Compressed ROM File
  1124. System). CramFs is designed to be a simple, small, and compressed
  1125. file system for ROM based embedded systems. CramFs is read-only,
  1126. limited to 256MB file systems (with 16MB files), and doesn't support
  1127. 16/32 bits uid/gid, hard links and timestamps.
  1128. See <file:Documentation/filesystems/cramfs.txt> and
  1129. <file:fs/cramfs/README> for further information.
  1130. To compile this as a module, choose M here: the module will be called
  1131. cramfs. Note that the root file system (the one containing the
  1132. directory /) cannot be compiled as a module.
  1133. If unsure, say N.
  1134. config VXFS_FS
  1135. tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
  1136. depends on BLOCK
  1137. help
  1138. FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
  1139. file system format. VERITAS VxFS(TM) is the standard file system
  1140. of SCO UnixWare (and possibly others) and optionally available
  1141. for Sunsoft Solaris, HP-UX and many other operating systems.
  1142. Currently only readonly access is supported.
  1143. NOTE: the file system type as used by mount(1), mount(2) and
  1144. fstab(5) is 'vxfs' as it describes the file system format, not
  1145. the actual driver.
  1146. To compile this as a module, choose M here: the module will be
  1147. called freevxfs. If unsure, say N.
  1148. config MINIX_FS
  1149. tristate "Minix file system support"
  1150. depends on BLOCK
  1151. help
  1152. Minix is a simple operating system used in many classes about OS's.
  1153. The minix file system (method to organize files on a hard disk
  1154. partition or a floppy disk) was the original file system for Linux,
  1155. but has been superseded by the second extended file system ext2fs.
  1156. You don't want to use the minix file system on your hard disk
  1157. because of certain built-in restrictions, but it is sometimes found
  1158. on older Linux floppy disks. This option will enlarge your kernel
  1159. by about 28 KB. If unsure, say N.
  1160. To compile this file system support as a module, choose M here: the
  1161. module will be called minix. Note that the file system of your root
  1162. partition (the one containing the directory /) cannot be compiled as
  1163. a module.
  1164. config OMFS_FS
  1165. tristate "SonicBlue Optimized MPEG File System support"
  1166. depends on BLOCK
  1167. select CRC_ITU_T
  1168. help
  1169. This is the proprietary file system used by the Rio Karma music
  1170. player and ReplayTV DVR. Despite the name, this filesystem is not
  1171. more efficient than a standard FS for MPEG files, in fact likely
  1172. the opposite is true. Say Y if you have either of these devices
  1173. and wish to mount its disk.
  1174. To compile this file system support as a module, choose M here: the
  1175. module will be called omfs. If unsure, say N.
  1176. config HPFS_FS
  1177. tristate "OS/2 HPFS file system support"
  1178. depends on BLOCK
  1179. help
  1180. OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  1181. is the file system used for organizing files on OS/2 hard disk
  1182. partitions. Say Y if you want to be able to read files from and
  1183. write files to an OS/2 HPFS partition on your hard drive. OS/2
  1184. floppies however are in regular MSDOS format, so you don't need this
  1185. option in order to be able to read them. Read
  1186. <file:Documentation/filesystems/hpfs.txt>.
  1187. To compile this file system support as a module, choose M here: the
  1188. module will be called hpfs. If unsure, say N.
  1189. config QNX4FS_FS
  1190. tristate "QNX4 file system support (read only)"
  1191. depends on BLOCK
  1192. help
  1193. This is the file system used by the real-time operating systems
  1194. QNX 4 and QNX 6 (the latter is also called QNX RTP).
  1195. Further information is available at <http://www.qnx.com/>.
  1196. Say Y if you intend to mount QNX hard disks or floppies.
  1197. Unless you say Y to "QNX4FS read-write support" below, you will
  1198. only be able to read these file systems.
  1199. To compile this file system support as a module, choose M here: the
  1200. module will be called qnx4.
  1201. If you don't know whether you need it, then you don't need it:
  1202. answer N.
  1203. config QNX4FS_RW
  1204. bool "QNX4FS write support (DANGEROUS)"
  1205. depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
  1206. help
  1207. Say Y if you want to test write support for QNX4 file systems.
  1208. It's currently broken, so for now:
  1209. answer N.
  1210. config ROMFS_FS
  1211. tristate "ROM file system support"
  1212. depends on BLOCK
  1213. ---help---
  1214. This is a very small read-only file system mainly intended for
  1215. initial ram disks of installation disks, but it could be used for
  1216. other read-only media as well. Read
  1217. <file:Documentation/filesystems/romfs.txt> for details.
  1218. To compile this file system support as a module, choose M here: the
  1219. module will be called romfs. Note that the file system of your
  1220. root partition (the one containing the directory /) cannot be a
  1221. module.
  1222. If you don't know whether you need it, then you don't need it:
  1223. answer N.
  1224. config SYSV_FS
  1225. tristate "System V/Xenix/V7/Coherent file system support"
  1226. depends on BLOCK
  1227. help
  1228. SCO, Xenix and Coherent are commercial Unix systems for Intel
  1229. machines, and Version 7 was used on the DEC PDP-11. Saying Y
  1230. here would allow you to read from their floppies and hard disk
  1231. partitions.
  1232. If you have floppies or hard disk partitions like that, it is likely
  1233. that they contain binaries from those other Unix systems; in order
  1234. to run these binaries, you will want to install linux-abi which is
  1235. a set of kernel modules that lets you run SCO, Xenix, Wyse,
  1236. UnixWare, Dell Unix and System V programs under Linux. It is
  1237. available via FTP (user: ftp) from
  1238. <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
  1239. NOTE: that will work only for binaries from Intel-based systems;
  1240. PDP ones will have to wait until somebody ports Linux to -11 ;-)
  1241. If you only intend to mount files from some other Unix over the
  1242. network using NFS, you don't need the System V file system support
  1243. (but you need NFS file system support obviously).
  1244. Note that this option is generally not needed for floppies, since a
  1245. good portable way to transport files and directories between unixes
  1246. (and even other operating systems) is given by the tar program ("man
  1247. tar" or preferably "info tar"). Note also that this option has
  1248. nothing whatsoever to do with the option "System V IPC". Read about
  1249. the System V file system in
  1250. <file:Documentation/filesystems/sysv-fs.txt>.
  1251. Saying Y here will enlarge your kernel by about 27 KB.
  1252. To compile this as a module, choose M here: the module will be called
  1253. sysv.
  1254. If you haven't heard about all of this before, it's safe to say N.
  1255. config UFS_FS
  1256. tristate "UFS file system support (read only)"
  1257. depends on BLOCK
  1258. help
  1259. BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
  1260. OpenBSD and NeXTstep) use a file system called UFS. Some System V
  1261. Unixes can create and mount hard disk partitions and diskettes using
  1262. this file system as well. Saying Y here will allow you to read from
  1263. these partitions; if you also want to write to them, say Y to the
  1264. experimental "UFS file system write support", below. Please read the
  1265. file <file:Documentation/filesystems/ufs.txt> for more information.
  1266. The recently released UFS2 variant (used in FreeBSD 5.x) is
  1267. READ-ONLY supported.
  1268. Note that this option is generally not needed for floppies, since a
  1269. good portable way to transport files and directories between unixes
  1270. (and even other operating systems) is given by the tar program ("man
  1271. tar" or preferably "info tar").
  1272. When accessing NeXTstep files, you may need to convert them from the
  1273. NeXT character set to the Latin1 character set; use the program
  1274. recode ("info recode") for this purpose.
  1275. To compile the UFS file system support as a module, choose M here: the
  1276. module will be called ufs.
  1277. If you haven't heard about all of this before, it's safe to say N.
  1278. config UFS_FS_WRITE
  1279. bool "UFS file system write support (DANGEROUS)"
  1280. depends on UFS_FS && EXPERIMENTAL
  1281. help
  1282. Say Y here if you want to try writing to UFS partitions. This is
  1283. experimental, so you should back up your UFS partitions beforehand.
  1284. config UFS_DEBUG
  1285. bool "UFS debugging"
  1286. depends on UFS_FS
  1287. help
  1288. If you are experiencing any problems with the UFS filesystem, say
  1289. Y here. This will result in _many_ additional debugging messages to be
  1290. written to the system log.
  1291. endmenu
  1292. menuconfig NETWORK_FILESYSTEMS
  1293. bool "Network File Systems"
  1294. default y
  1295. depends on NET
  1296. ---help---
  1297. Say Y here to get to see options for network filesystems and
  1298. filesystem-related networking code, such as NFS daemon and
  1299. RPCSEC security modules.
  1300. This option alone does not add any kernel code.
  1301. If you say N, all options in this submenu will be skipped and
  1302. disabled; if unsure, say Y here.
  1303. if NETWORK_FILESYSTEMS
  1304. config NFS_FS
  1305. tristate "NFS client support"
  1306. depends on INET
  1307. select LOCKD
  1308. select SUNRPC
  1309. select NFS_ACL_SUPPORT if NFS_V3_ACL
  1310. help
  1311. Choose Y here if you want to access files residing on other
  1312. computers using Sun's Network File System protocol. To compile
  1313. this file system support as a module, choose M here: the module
  1314. will be called nfs.
  1315. To mount file systems exported by NFS servers, you also need to
  1316. install the user space mount.nfs command which can be found in
  1317. the Linux nfs-utils package, available from http://linux-nfs.org/.
  1318. Information about using the mount command is available in the
  1319. mount(8) man page. More detail about the Linux NFS client
  1320. implementation is available via the nfs(5) man page.
  1321. Below you can choose which versions of the NFS protocol are
  1322. available in the kernel to mount NFS servers. Support for NFS
  1323. version 2 (RFC 1094) is always available when NFS_FS is selected.
  1324. To configure a system which mounts its root file system via NFS
  1325. at boot time, say Y here, select "Kernel level IP
  1326. autoconfiguration" in the NETWORK menu, and select "Root file
  1327. system on NFS" below. You cannot compile this file system as a
  1328. module in this case.
  1329. If unsure, say N.
  1330. config NFS_V3
  1331. bool "NFS client support for NFS version 3"
  1332. depends on NFS_FS
  1333. help
  1334. This option enables support for version 3 of the NFS protocol
  1335. (RFC 1813) in the kernel's NFS client.
  1336. If unsure, say Y.
  1337. config NFS_V3_ACL
  1338. bool "NFS client support for the NFSv3 ACL protocol extension"
  1339. depends on NFS_V3
  1340. help
  1341. Some NFS servers support an auxiliary NFSv3 ACL protocol that
  1342. Sun added to Solaris but never became an official part of the
  1343. NFS version 3 protocol. This protocol extension allows
  1344. applications on NFS clients to manipulate POSIX Access Control
  1345. Lists on files residing on NFS servers. NFS servers enforce
  1346. ACLs on local files whether this protocol is available or not.
  1347. Choose Y here if your NFS server supports the Solaris NFSv3 ACL
  1348. protocol extension and you want your NFS client to allow
  1349. applications to access and modify ACLs on files on the server.
  1350. Most NFS servers don't support the Solaris NFSv3 ACL protocol
  1351. extension. You can choose N here or specify the "noacl" mount
  1352. option to prevent your NFS client from trying to use the NFSv3
  1353. ACL protocol.
  1354. If unsure, say N.
  1355. config NFS_V4
  1356. bool "NFS client support for NFS version 4 (EXPERIMENTAL)"
  1357. depends on NFS_FS && EXPERIMENTAL
  1358. select RPCSEC_GSS_KRB5
  1359. help
  1360. This option enables support for version 4 of the NFS protocol
  1361. (RFC 3530) in the kernel's NFS client.
  1362. To mount NFS servers using NFSv4, you also need to install user
  1363. space programs which can be found in the Linux nfs-utils package,
  1364. available from http://linux-nfs.org/.
  1365. If unsure, say N.
  1366. config ROOT_NFS
  1367. bool "Root file system on NFS"
  1368. depends on NFS_FS=y && IP_PNP
  1369. help
  1370. If you want your system to mount its root file system via NFS,
  1371. choose Y here. This is common practice for managing systems
  1372. without local permanent storage. For details, read
  1373. <file:Documentation/filesystems/nfsroot.txt>.
  1374. Most people say N here.
  1375. config NFSD
  1376. tristate "NFS server support"
  1377. depends on INET
  1378. select LOCKD
  1379. select SUNRPC
  1380. select EXPORTFS
  1381. select NFS_ACL_SUPPORT if NFSD_V2_ACL
  1382. help
  1383. Choose Y here if you want to allow other computers to access
  1384. files residing on this system using Sun's Network File System
  1385. protocol. To compile the NFS server support as a module,
  1386. choose M here: the module will be called nfsd.
  1387. You may choose to use a user-space NFS server instead, in which
  1388. case you can choose N here.
  1389. To export local file systems using NFS, you also need to install
  1390. user space programs which can be found in the Linux nfs-utils
  1391. package, available from http://linux-nfs.org/. More detail about
  1392. the Linux NFS server implementation is available via the
  1393. exports(5) man page.
  1394. Below you can choose which versions of the NFS protocol are
  1395. available to clients mounting the NFS server on this system.
  1396. Support for NFS version 2 (RFC 1094) is always available when
  1397. CONFIG_NFSD is selected.
  1398. If unsure, say N.
  1399. config NFSD_V2_ACL
  1400. bool
  1401. depends on NFSD
  1402. config NFSD_V3
  1403. bool "NFS server support for NFS version 3"
  1404. depends on NFSD
  1405. help
  1406. This option enables support in your system's NFS server for
  1407. version 3 of the NFS protocol (RFC 1813).
  1408. If unsure, say Y.
  1409. config NFSD_V3_ACL
  1410. bool "NFS server support for the NFSv3 ACL protocol extension"
  1411. depends on NFSD_V3
  1412. select NFSD_V2_ACL
  1413. help
  1414. Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
  1415. never became an official part of the NFS version 3 protocol.
  1416. This protocol extension allows applications on NFS clients to
  1417. manipulate POSIX Access Control Lists on files residing on NFS
  1418. servers. NFS servers enforce POSIX ACLs on local files whether
  1419. this protocol is available or not.
  1420. This option enables support in your system's NFS server for the
  1421. NFSv3 ACL protocol extension allowing NFS clients to manipulate
  1422. POSIX ACLs on files exported by your system's NFS server. NFS
  1423. clients which support the Solaris NFSv3 ACL protocol can then
  1424. access and modify ACLs on your NFS server.
  1425. To store ACLs on your NFS server, you also need to enable ACL-
  1426. related CONFIG options for your local file systems of choice.
  1427. If unsure, say N.
  1428. config NFSD_V4
  1429. bool "NFS server support for NFS version 4 (EXPERIMENTAL)"
  1430. depends on NFSD && PROC_FS && EXPERIMENTAL
  1431. select NFSD_V3
  1432. select FS_POSIX_ACL
  1433. select RPCSEC_GSS_KRB5
  1434. help
  1435. This option enables support in your system's NFS server for
  1436. version 4 of the NFS protocol (RFC 3530).
  1437. To export files using NFSv4, you need to install additional user
  1438. space programs which can be found in the Linux nfs-utils package,
  1439. available from http://linux-nfs.org/.
  1440. If unsure, say N.
  1441. config LOCKD
  1442. tristate
  1443. config LOCKD_V4
  1444. bool
  1445. depends on NFSD_V3 || NFS_V3
  1446. default y
  1447. config EXPORTFS
  1448. tristate
  1449. config NFS_ACL_SUPPORT
  1450. tristate
  1451. select FS_POSIX_ACL
  1452. config NFS_COMMON
  1453. bool
  1454. depends on NFSD || NFS_FS
  1455. default y
  1456. config SUNRPC
  1457. tristate
  1458. config SUNRPC_GSS
  1459. tristate
  1460. config SUNRPC_XPRT_RDMA
  1461. tristate
  1462. depends on SUNRPC && INFINIBAND && EXPERIMENTAL
  1463. default SUNRPC && INFINIBAND
  1464. help
  1465. This option enables an RPC client transport capability that
  1466. allows the NFS client to mount servers via an RDMA-enabled
  1467. transport.
  1468. To compile RPC client RDMA transport support as a module,
  1469. choose M here: the module will be called xprtrdma.
  1470. If unsure, say N.
  1471. config SUNRPC_REGISTER_V4
  1472. bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)"
  1473. depends on SUNRPC && EXPERIMENTAL
  1474. default n
  1475. help
  1476. Sun added support for registering RPC services at an IPv6
  1477. address by creating two new versions of the rpcbind protocol
  1478. (RFC 1833).
  1479. This option enables support in the kernel RPC server for
  1480. registering kernel RPC services via version 4 of the rpcbind
  1481. protocol. If you enable this option, you must run a portmapper
  1482. daemon that supports rpcbind protocol version 4.
  1483. Serving NFS over IPv6 from knfsd (the kernel's NFS server)
  1484. requires that you enable this option and use a portmapper that
  1485. supports rpcbind version 4.
  1486. If unsure, say N to get traditional behavior (register kernel
  1487. RPC services using only rpcbind version 2). Distributions
  1488. using the legacy Linux portmapper daemon must say N here.
  1489. config RPCSEC_GSS_KRB5
  1490. tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
  1491. depends on SUNRPC && EXPERIMENTAL
  1492. select SUNRPC_GSS
  1493. select CRYPTO
  1494. select CRYPTO_MD5
  1495. select CRYPTO_DES
  1496. select CRYPTO_CBC
  1497. help
  1498. Choose Y here to enable Secure RPC using the Kerberos version 5
  1499. GSS-API mechanism (RFC 1964).
  1500. Secure RPC calls with Kerberos require an auxiliary user-space
  1501. daemon which may be found in the Linux nfs-utils package
  1502. available from http://linux-nfs.org/. In addition, user-space
  1503. Kerberos support should be installed.
  1504. If unsure, say N.
  1505. config RPCSEC_GSS_SPKM3
  1506. tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
  1507. depends on SUNRPC && EXPERIMENTAL
  1508. select SUNRPC_GSS
  1509. select CRYPTO
  1510. select CRYPTO_MD5
  1511. select CRYPTO_DES
  1512. select CRYPTO_CAST5
  1513. select CRYPTO_CBC
  1514. help
  1515. Choose Y here to enable Secure RPC using the SPKM3 public key
  1516. GSS-API mechansim (RFC 2025).
  1517. Secure RPC calls with SPKM3 require an auxiliary userspace
  1518. daemon which may be found in the Linux nfs-utils package
  1519. available from http://linux-nfs.org/.
  1520. If unsure, say N.
  1521. config SMB_FS
  1522. tristate "SMB file system support (OBSOLETE, please use CIFS)"
  1523. depends on INET
  1524. select NLS
  1525. help
  1526. SMB (Server Message Block) is the protocol Windows for Workgroups
  1527. (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
  1528. files and printers over local networks. Saying Y here allows you to
  1529. mount their file systems (often called "shares" in this context) and
  1530. access them just like any other Unix directory. Currently, this
  1531. works only if the Windows machines use TCP/IP as the underlying
  1532. transport protocol, and not NetBEUI. For details, read
  1533. <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
  1534. available from <http://www.tldp.org/docs.html#howto>.
  1535. Note: if you just want your box to act as an SMB *server* and make
  1536. files and printing services available to Windows clients (which need
  1537. to have a TCP/IP stack), you don't need to say Y here; you can use
  1538. the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
  1539. for that.
  1540. General information about how to connect Linux, Windows machines and
  1541. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1542. To compile the SMB support as a module, choose M here:
  1543. the module will be called smbfs. Most people say N, however.
  1544. config SMB_NLS_DEFAULT
  1545. bool "Use a default NLS"
  1546. depends on SMB_FS
  1547. help
  1548. Enabling this will make smbfs use nls translations by default. You
  1549. need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
  1550. settings and you need to give the default nls for the SMB server as
  1551. CONFIG_SMB_NLS_REMOTE.
  1552. The nls settings can be changed at mount time, if your smbmount
  1553. supports that, using the codepage and iocharset parameters.
  1554. smbmount from samba 2.2.0 or later supports this.
  1555. config SMB_NLS_REMOTE
  1556. string "Default Remote NLS Option"
  1557. depends on SMB_NLS_DEFAULT
  1558. default "cp437"
  1559. help
  1560. This setting allows you to specify a default value for which
  1561. codepage the server uses. If this field is left blank no
  1562. translations will be done by default. The local codepage/charset
  1563. default to CONFIG_NLS_DEFAULT.
  1564. The nls settings can be changed at mount time, if your smbmount
  1565. supports that, using the codepage and iocharset parameters.
  1566. smbmount from samba 2.2.0 or later supports this.
  1567. config CIFS
  1568. tristate "CIFS support (advanced network filesystem, SMBFS successor)"
  1569. depends on INET
  1570. select NLS
  1571. help
  1572. This is the client VFS module for the Common Internet File System
  1573. (CIFS) protocol which is the successor to the Server Message Block
  1574. (SMB) protocol, the native file sharing mechanism for most early
  1575. PC operating systems. The CIFS protocol is fully supported by
  1576. file servers such as Windows 2000 (including Windows 2003, NT 4
  1577. and Windows XP) as well by Samba (which provides excellent CIFS
  1578. server support for Linux and many other operating systems). Limited
  1579. support for OS/2 and Windows ME and similar servers is provided as
  1580. well.
  1581. The cifs module provides an advanced network file system
  1582. client for mounting to CIFS compliant servers. It includes
  1583. support for DFS (hierarchical name space), secure per-user
  1584. session establishment via Kerberos or NTLM or NTLMv2,
  1585. safe distributed caching (oplock), optional packet
  1586. signing, Unicode and other internationalization improvements.
  1587. If you need to mount to Samba or Windows from this machine, say Y.
  1588. config CIFS_STATS
  1589. bool "CIFS statistics"
  1590. depends on CIFS
  1591. help
  1592. Enabling this option will cause statistics for each server share
  1593. mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
  1594. config CIFS_STATS2
  1595. bool "Extended statistics"
  1596. depends on CIFS_STATS
  1597. help
  1598. Enabling this option will allow more detailed statistics on SMB
  1599. request timing to be displayed in /proc/fs/cifs/DebugData and also
  1600. allow optional logging of slow responses to dmesg (depending on the
  1601. value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
  1602. These additional statistics may have a minor effect on performance
  1603. and memory utilization.
  1604. Unless you are a developer or are doing network performance analysis
  1605. or tuning, say N.
  1606. config CIFS_WEAK_PW_HASH
  1607. bool "Support legacy servers which use weaker LANMAN security"
  1608. depends on CIFS
  1609. help
  1610. Modern CIFS servers including Samba and most Windows versions
  1611. (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
  1612. security mechanisms. These hash the password more securely
  1613. than the mechanisms used in the older LANMAN version of the
  1614. SMB protocol but LANMAN based authentication is needed to
  1615. establish sessions with some old SMB servers.
  1616. Enabling this option allows the cifs module to mount to older
  1617. LANMAN based servers such as OS/2 and Windows 95, but such
  1618. mounts may be less secure than mounts using NTLM or more recent
  1619. security mechanisms if you are on a public network. Unless you
  1620. have a need to access old SMB servers (and are on a private
  1621. network) you probably want to say N. Even if this support
  1622. is enabled in the kernel build, LANMAN authentication will not be
  1623. used automatically. At runtime LANMAN mounts are disabled but
  1624. can be set to required (or optional) either in
  1625. /proc/fs/cifs (see fs/cifs/README for more detail) or via an
  1626. option on the mount command. This support is disabled by
  1627. default in order to reduce the possibility of a downgrade
  1628. attack.
  1629. If unsure, say N.
  1630. config CIFS_UPCALL
  1631. bool "Kerberos/SPNEGO advanced session setup"
  1632. depends on CIFS && KEYS
  1633. help
  1634. Enables an upcall mechanism for CIFS which accesses
  1635. userspace helper utilities to provide SPNEGO packaged (RFC 4178)
  1636. Kerberos tickets which are needed to mount to certain secure servers
  1637. (for which more secure Kerberos authentication is required). If
  1638. unsure, say N.
  1639. config CIFS_XATTR
  1640. bool "CIFS extended attributes"
  1641. depends on CIFS
  1642. help
  1643. Extended attributes are name:value pairs associated with inodes by
  1644. the kernel or by users (see the attr(5) manual page, or visit
  1645. <http://acl.bestbits.at/> for details). CIFS maps the name of
  1646. extended attributes beginning with the user namespace prefix
  1647. to SMB/CIFS EAs. EAs are stored on Windows servers without the
  1648. user namespace prefix, but their names are seen by Linux cifs clients
  1649. prefaced by the user namespace prefix. The system namespace
  1650. (used by some filesystems to store ACLs) is not supported at
  1651. this time.
  1652. If unsure, say N.
  1653. config CIFS_POSIX
  1654. bool "CIFS POSIX Extensions"
  1655. depends on CIFS_XATTR
  1656. help
  1657. Enabling this option will cause the cifs client to attempt to
  1658. negotiate a newer dialect with servers, such as Samba 3.0.5
  1659. or later, that optionally can handle more POSIX like (rather
  1660. than Windows like) file behavior. It also enables
  1661. support for POSIX ACLs (getfacl and setfacl) to servers
  1662. (such as Samba 3.10 and later) which can negotiate
  1663. CIFS POSIX ACL support. If unsure, say N.
  1664. config CIFS_DEBUG2
  1665. bool "Enable additional CIFS debugging routines"
  1666. depends on CIFS
  1667. help
  1668. Enabling this option adds a few more debugging routines
  1669. to the cifs code which slightly increases the size of
  1670. the cifs module and can cause additional logging of debug
  1671. messages in some error paths, slowing performance. This
  1672. option can be turned off unless you are debugging
  1673. cifs problems. If unsure, say N.
  1674. config CIFS_EXPERIMENTAL
  1675. bool "CIFS Experimental Features (EXPERIMENTAL)"
  1676. depends on CIFS && EXPERIMENTAL
  1677. help
  1678. Enables cifs features under testing. These features are
  1679. experimental and currently include DFS support and directory
  1680. change notification ie fcntl(F_DNOTIFY), as well as the upcall
  1681. mechanism which will be used for Kerberos session negotiation
  1682. and uid remapping. Some of these features also may depend on
  1683. setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
  1684. (which is disabled by default). See the file fs/cifs/README
  1685. for more details. If unsure, say N.
  1686. config CIFS_DFS_UPCALL
  1687. bool "DFS feature support (EXPERIMENTAL)"
  1688. depends on CIFS_EXPERIMENTAL
  1689. depends on KEYS
  1690. help
  1691. Enables an upcall mechanism for CIFS which contacts userspace
  1692. helper utilities to provide server name resolution (host names to
  1693. IP addresses) which is needed for implicit mounts of DFS junction
  1694. points. If unsure, say N.
  1695. config NCP_FS
  1696. tristate "NCP file system support (to mount NetWare volumes)"
  1697. depends on IPX!=n || INET
  1698. help
  1699. NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  1700. used by Novell NetWare clients to talk to file servers. It is to
  1701. IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
  1702. to mount NetWare file server volumes and to access them just like
  1703. any other Unix directory. For details, please read the file
  1704. <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
  1705. the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
  1706. You do not have to say Y here if you want your Linux box to act as a
  1707. file *server* for Novell NetWare clients.
  1708. General information about how to connect Linux, Windows machines and
  1709. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1710. To compile this as a module, choose M here: the module will be called
  1711. ncpfs. Say N unless you are connected to a Novell network.
  1712. source "fs/ncpfs/Kconfig"
  1713. config CODA_FS
  1714. tristate "Coda file system support (advanced network fs)"
  1715. depends on INET
  1716. help
  1717. Coda is an advanced network file system, similar to NFS in that it
  1718. enables you to mount file systems of a remote server and access them
  1719. with regular Unix commands as if they were sitting on your hard
  1720. disk. Coda has several advantages over NFS: support for
  1721. disconnected operation (e.g. for laptops), read/write server
  1722. replication, security model for authentication and encryption,
  1723. persistent client caches and write back caching.
  1724. If you say Y here, your Linux box will be able to act as a Coda
  1725. *client*. You will need user level code as well, both for the
  1726. client and server. Servers are currently user level, i.e. they need
  1727. no kernel support. Please read
  1728. <file:Documentation/filesystems/coda.txt> and check out the Coda
  1729. home page <http://www.coda.cs.cmu.edu/>.
  1730. To compile the coda client support as a module, choose M here: the
  1731. module will be called coda.
  1732. config AFS_FS
  1733. tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
  1734. depends on INET && EXPERIMENTAL
  1735. select AF_RXRPC
  1736. help
  1737. If you say Y here, you will get an experimental Andrew File System
  1738. driver. It currently only supports unsecured read-only AFS access.
  1739. See <file:Documentation/filesystems/afs.txt> for more information.
  1740. If unsure, say N.
  1741. config AFS_DEBUG
  1742. bool "AFS dynamic debugging"
  1743. depends on AFS_FS
  1744. help
  1745. Say Y here to make runtime controllable debugging messages appear.
  1746. See <file:Documentation/filesystems/afs.txt> for more information.
  1747. If unsure, say N.
  1748. config 9P_FS
  1749. tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
  1750. depends on INET && NET_9P && EXPERIMENTAL
  1751. help
  1752. If you say Y here, you will get experimental support for
  1753. Plan 9 resource sharing via the 9P2000 protocol.
  1754. See <http://v9fs.sf.net> for more information.
  1755. If unsure, say N.
  1756. endif # NETWORK_FILESYSTEMS
  1757. if BLOCK
  1758. menu "Partition Types"
  1759. source "fs/partitions/Kconfig"
  1760. endmenu
  1761. endif
  1762. source "fs/nls/Kconfig"
  1763. source "fs/dlm/Kconfig"
  1764. endmenu