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 EXT4DEV_FS
  111. tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)"
  112. depends on EXPERIMENTAL
  113. select JBD2
  114. select CRC16
  115. help
  116. Ext4dev is a predecessor filesystem of the next generation
  117. extended fs ext4, based on ext3 filesystem code. It will be
  118. renamed ext4 fs later, once ext4dev is mature and stabilized.
  119. Unlike the change from ext2 filesystem to ext3 filesystem,
  120. the on-disk format of ext4dev is not the same as ext3 any more:
  121. it is based on extent maps and it supports 48-bit physical block
  122. numbers. These combined on-disk format changes will allow
  123. ext4dev/ext4 to handle more than 16 TB filesystem volumes --
  124. a hard limit that ext3 cannot overcome without changing the
  125. on-disk format.
  126. Other than extent maps and 48-bit block numbers, ext4dev also is
  127. likely to have other new features such as persistent preallocation,
  128. high resolution time stamps, and larger file support etc. These
  129. features will be added to ext4dev gradually.
  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_FS_XATTR
  134. bool "Ext4dev extended attributes"
  135. depends on EXT4DEV_FS
  136. default y
  137. help
  138. Extended attributes are name:value pairs associated with inodes by
  139. the kernel or by users (see the attr(5) manual page, or visit
  140. <http://acl.bestbits.at/> for details).
  141. If unsure, say N.
  142. You need this for POSIX ACL support on ext4dev/ext4.
  143. config EXT4DEV_FS_POSIX_ACL
  144. bool "Ext4dev POSIX Access Control Lists"
  145. depends on EXT4DEV_FS_XATTR
  146. select FS_POSIX_ACL
  147. help
  148. POSIX Access Control Lists (ACLs) support permissions for users and
  149. groups beyond the owner/group/world scheme.
  150. To learn more about Access Control Lists, visit the POSIX ACLs for
  151. Linux website <http://acl.bestbits.at/>.
  152. If you don't know what Access Control Lists are, say N
  153. config EXT4DEV_FS_SECURITY
  154. bool "Ext4dev Security Labels"
  155. depends on EXT4DEV_FS_XATTR
  156. help
  157. Security labels support alternative access control models
  158. implemented by security modules like SELinux. This option
  159. enables an extended attribute handler for file security
  160. labels in the ext4dev/ext4 filesystem.
  161. If you are not using a security module that requires using
  162. extended attributes for file security labels, say N.
  163. config JBD
  164. tristate
  165. help
  166. This is a generic journalling layer for block devices. It is
  167. currently used by the ext3 and OCFS2 file systems, but it could
  168. also be used to add journal support to other file systems or block
  169. devices such as RAID or LVM.
  170. If you are using the ext3 or OCFS2 file systems, you need to
  171. say Y here. If you are not using ext3 OCFS2 then you will probably
  172. want to say N.
  173. To compile this device as a module, choose M here: the module will be
  174. called jbd. If you are compiling ext3 or OCFS2 into the kernel,
  175. you cannot compile this code as a module.
  176. config JBD_DEBUG
  177. bool "JBD (ext3) debugging support"
  178. depends on JBD && DEBUG_FS
  179. help
  180. If you are using the ext3 journaled file system (or potentially any
  181. other file system/device using JBD), this option allows you to
  182. enable debugging output while the system is running, in order to
  183. help track down any problems you are having. By default the
  184. debugging output will be turned off.
  185. If you select Y here, then you will be able to turn on debugging
  186. with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a
  187. number between 1 and 5, the higher the number, the more debugging
  188. output is generated. To turn debugging off again, do
  189. "echo 0 > /sys/kernel/debug/jbd/jbd-debug".
  190. config JBD2
  191. tristate
  192. select CRC32
  193. help
  194. This is a generic journaling layer for block devices that support
  195. both 32-bit and 64-bit block numbers. It is currently used by
  196. the ext4dev/ext4 filesystem, but it could also be used to add
  197. journal support to other file systems or block devices such
  198. as RAID or LVM.
  199. If you are using ext4dev/ext4, you need to say Y here. If you are not
  200. using ext4dev/ext4 then you will probably want to say N.
  201. To compile this device as a module, choose M here. The module will be
  202. called jbd2. If you are compiling ext4dev/ext4 into the kernel,
  203. you cannot compile this code as a module.
  204. config JBD2_DEBUG
  205. bool "JBD2 (ext4dev/ext4) debugging support"
  206. depends on JBD2 && DEBUG_FS
  207. help
  208. If you are using the ext4dev/ext4 journaled file system (or
  209. potentially any other filesystem/device using JBD2), this option
  210. allows you to enable debugging output while the system is running,
  211. in order to help track down any problems you are having.
  212. By default, the debugging output will be turned off.
  213. If you select Y here, then you will be able to turn on debugging
  214. with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
  215. number between 1 and 5. The higher the number, the more debugging
  216. output is generated. To turn debugging off again, do
  217. "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
  218. config FS_MBCACHE
  219. # Meta block cache for Extended Attributes (ext2/ext3/ext4)
  220. tristate
  221. depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
  222. default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
  223. default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
  224. config REISERFS_FS
  225. tristate "Reiserfs support"
  226. help
  227. Stores not just filenames but the files themselves in a balanced
  228. tree. Uses journalling.
  229. Balanced trees are more efficient than traditional file system
  230. architectural foundations.
  231. In general, ReiserFS is as fast as ext2, but is very efficient with
  232. large directories and small files. Additional patches are needed
  233. for NFS and quotas, please see <http://www.namesys.com/> for links.
  234. It is more easily extended to have features currently found in
  235. database and keyword search systems than block allocation based file
  236. systems are. The next version will be so extended, and will support
  237. plugins consistent with our motto ``It takes more than a license to
  238. make source code open.''
  239. Read <http://www.namesys.com/> to learn more about reiserfs.
  240. Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
  241. If you like it, you can pay us to add new features to it that you
  242. need, buy a support contract, or pay us to port it to another OS.
  243. config REISERFS_CHECK
  244. bool "Enable reiserfs debug mode"
  245. depends on REISERFS_FS
  246. help
  247. If you set this to Y, then ReiserFS will perform every check it can
  248. possibly imagine of its internal consistency throughout its
  249. operation. It will also go substantially slower. More than once we
  250. have forgotten that this was on, and then gone despondent over the
  251. latest benchmarks.:-) Use of this option allows our team to go all
  252. out in checking for consistency when debugging without fear of its
  253. effect on end users. If you are on the verge of sending in a bug
  254. report, say Y and you might get a useful error message. Almost
  255. everyone should say N.
  256. config REISERFS_PROC_INFO
  257. bool "Stats in /proc/fs/reiserfs"
  258. depends on REISERFS_FS && PROC_FS
  259. help
  260. Create under /proc/fs/reiserfs a hierarchy of files, displaying
  261. various ReiserFS statistics and internal data at the expense of
  262. making your kernel or module slightly larger (+8 KB). This also
  263. increases the amount of kernel memory required for each mount.
  264. Almost everyone but ReiserFS developers and people fine-tuning
  265. reiserfs or tracing problems should say N.
  266. config REISERFS_FS_XATTR
  267. bool "ReiserFS extended attributes"
  268. depends on REISERFS_FS
  269. help
  270. Extended attributes are name:value pairs associated with inodes by
  271. the kernel or by users (see the attr(5) manual page, or visit
  272. <http://acl.bestbits.at/> for details).
  273. If unsure, say N.
  274. config REISERFS_FS_POSIX_ACL
  275. bool "ReiserFS POSIX Access Control Lists"
  276. depends on REISERFS_FS_XATTR
  277. select FS_POSIX_ACL
  278. help
  279. Posix Access Control Lists (ACLs) support permissions for users and
  280. groups beyond the owner/group/world scheme.
  281. To learn more about Access Control Lists, visit the Posix ACLs for
  282. Linux website <http://acl.bestbits.at/>.
  283. If you don't know what Access Control Lists are, say N
  284. config REISERFS_FS_SECURITY
  285. bool "ReiserFS Security Labels"
  286. depends on REISERFS_FS_XATTR
  287. help
  288. Security labels support alternative access control models
  289. implemented by security modules like SELinux. This option
  290. enables an extended attribute handler for file security
  291. labels in the ReiserFS filesystem.
  292. If you are not using a security module that requires using
  293. extended attributes for file security labels, say N.
  294. config JFS_FS
  295. tristate "JFS filesystem support"
  296. select NLS
  297. help
  298. This is a port of IBM's Journaled Filesystem . More information is
  299. available in the file <file:Documentation/filesystems/jfs.txt>.
  300. If you do not intend to use the JFS filesystem, say N.
  301. config JFS_POSIX_ACL
  302. bool "JFS POSIX Access Control Lists"
  303. depends on JFS_FS
  304. select FS_POSIX_ACL
  305. help
  306. Posix Access Control Lists (ACLs) support permissions for users and
  307. groups beyond the owner/group/world scheme.
  308. To learn more about Access Control Lists, visit the Posix ACLs for
  309. Linux website <http://acl.bestbits.at/>.
  310. If you don't know what Access Control Lists are, say N
  311. config JFS_SECURITY
  312. bool "JFS Security Labels"
  313. depends on JFS_FS
  314. help
  315. Security labels support alternative access control models
  316. implemented by security modules like SELinux. This option
  317. enables an extended attribute handler for file security
  318. labels in the jfs filesystem.
  319. If you are not using a security module that requires using
  320. extended attributes for file security labels, say N.
  321. config JFS_DEBUG
  322. bool "JFS debugging"
  323. depends on JFS_FS
  324. help
  325. If you are experiencing any problems with the JFS filesystem, say
  326. Y here. This will result in additional debugging messages to be
  327. written to the system log. Under normal circumstances, this
  328. results in very little overhead.
  329. config JFS_STATISTICS
  330. bool "JFS statistics"
  331. depends on JFS_FS
  332. help
  333. Enabling this option will cause statistics from the JFS file system
  334. to be made available to the user in the /proc/fs/jfs/ directory.
  335. config FS_POSIX_ACL
  336. # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
  337. #
  338. # NOTE: you can implement Posix ACLs without these helpers (XFS does).
  339. # Never use this symbol for ifdefs.
  340. #
  341. bool
  342. default n
  343. source "fs/xfs/Kconfig"
  344. source "fs/gfs2/Kconfig"
  345. config OCFS2_FS
  346. tristate "OCFS2 file system support"
  347. depends on NET && SYSFS
  348. select CONFIGFS_FS
  349. select JBD
  350. select CRC32
  351. help
  352. OCFS2 is a general purpose extent based shared disk cluster file
  353. system with many similarities to ext3. It supports 64 bit inode
  354. numbers, and has automatically extending metadata groups which may
  355. also make it attractive for non-clustered use.
  356. You'll want to install the ocfs2-tools package in order to at least
  357. get "mount.ocfs2".
  358. Project web page: http://oss.oracle.com/projects/ocfs2
  359. Tools web page: http://oss.oracle.com/projects/ocfs2-tools
  360. OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
  361. For more information on OCFS2, see the file
  362. <file:Documentation/filesystems/ocfs2.txt>.
  363. config OCFS2_DEBUG_MASKLOG
  364. bool "OCFS2 logging support"
  365. depends on OCFS2_FS
  366. default y
  367. help
  368. The ocfs2 filesystem has an extensive logging system. The system
  369. allows selection of events to log via files in /sys/o2cb/logmask/.
  370. This option will enlarge your kernel, but it allows debugging of
  371. ocfs2 filesystem issues.
  372. config OCFS2_DEBUG_FS
  373. bool "OCFS2 expensive checks"
  374. depends on OCFS2_FS
  375. default n
  376. help
  377. This option will enable expensive consistency checks. Enable
  378. this option for debugging only as it is likely to decrease
  379. performance of the filesystem.
  380. config MINIX_FS
  381. tristate "Minix fs support"
  382. help
  383. Minix is a simple operating system used in many classes about OS's.
  384. The minix file system (method to organize files on a hard disk
  385. partition or a floppy disk) was the original file system for Linux,
  386. but has been superseded by the second extended file system ext2fs.
  387. You don't want to use the minix file system on your hard disk
  388. because of certain built-in restrictions, but it is sometimes found
  389. on older Linux floppy disks. This option will enlarge your kernel
  390. by about 28 KB. If unsure, say N.
  391. To compile this file system support as a module, choose M here: the
  392. module will be called minix. Note that the file system of your root
  393. partition (the one containing the directory /) cannot be compiled as
  394. a module.
  395. config ROMFS_FS
  396. tristate "ROM file system support"
  397. ---help---
  398. This is a very small read-only file system mainly intended for
  399. initial ram disks of installation disks, but it could be used for
  400. other read-only media as well. Read
  401. <file:Documentation/filesystems/romfs.txt> for details.
  402. To compile this file system support as a module, choose M here: the
  403. module will be called romfs. Note that the file system of your
  404. root partition (the one containing the directory /) cannot be a
  405. module.
  406. If you don't know whether you need it, then you don't need it:
  407. answer N.
  408. endif
  409. config INOTIFY
  410. bool "Inotify file change notification support"
  411. default y
  412. ---help---
  413. Say Y here to enable inotify support. Inotify is a file change
  414. notification system and a replacement for dnotify. Inotify fixes
  415. numerous shortcomings in dnotify and introduces several new features
  416. including multiple file events, one-shot support, and unmount
  417. notification.
  418. For more information, see <file:Documentation/filesystems/inotify.txt>
  419. If unsure, say Y.
  420. config INOTIFY_USER
  421. bool "Inotify support for userspace"
  422. depends on INOTIFY
  423. default y
  424. ---help---
  425. Say Y here to enable inotify support for userspace, including the
  426. associated system calls. Inotify allows monitoring of both files and
  427. directories via a single open fd. Events are read from the file
  428. descriptor, which is also select()- and poll()-able.
  429. For more information, see <file:Documentation/filesystems/inotify.txt>
  430. If unsure, say Y.
  431. config QUOTA
  432. bool "Quota support"
  433. help
  434. If you say Y here, you will be able to set per user limits for disk
  435. usage (also called disk quotas). Currently, it works for the
  436. ext2, ext3, and reiserfs file system. ext3 also supports journalled
  437. quotas for which you don't need to run quotacheck(8) after an unclean
  438. shutdown.
  439. For further details, read the Quota mini-HOWTO, available from
  440. <http://www.tldp.org/docs.html#howto>, or the documentation provided
  441. with the quota tools. Probably the quota support is only useful for
  442. multi user systems. If unsure, say N.
  443. config QUOTA_NETLINK_INTERFACE
  444. bool "Report quota messages through netlink interface"
  445. depends on QUOTA && NET
  446. help
  447. If you say Y here, quota warnings (about exceeding softlimit, reaching
  448. hardlimit, etc.) will be reported through netlink interface. If unsure,
  449. say Y.
  450. config PRINT_QUOTA_WARNING
  451. bool "Print quota warnings to console (OBSOLETE)"
  452. depends on QUOTA
  453. default y
  454. help
  455. If you say Y here, quota warnings (about exceeding softlimit, reaching
  456. hardlimit, etc.) will be printed to the process' controlling terminal.
  457. Note that this behavior is currently deprecated and may go away in
  458. future. Please use notification via netlink socket instead.
  459. config QFMT_V1
  460. tristate "Old quota format support"
  461. depends on QUOTA
  462. help
  463. This quota format was (is) used by kernels earlier than 2.4.22. If
  464. you have quota working and you don't want to convert to new quota
  465. format say Y here.
  466. config QFMT_V2
  467. tristate "Quota format v2 support"
  468. depends on QUOTA
  469. help
  470. This quota format allows using quotas with 32-bit UIDs/GIDs. If you
  471. need this functionality say Y here.
  472. config QUOTACTL
  473. bool
  474. depends on XFS_QUOTA || QUOTA
  475. default y
  476. config DNOTIFY
  477. bool "Dnotify support"
  478. default y
  479. help
  480. Dnotify is a directory-based per-fd file change notification system
  481. that uses signals to communicate events to user-space. There exist
  482. superior alternatives, but some applications may still rely on
  483. dnotify.
  484. If unsure, say Y.
  485. config AUTOFS_FS
  486. tristate "Kernel automounter support"
  487. help
  488. The automounter is a tool to automatically mount remote file systems
  489. on demand. This implementation is partially kernel-based to reduce
  490. overhead in the already-mounted case; this is unlike the BSD
  491. automounter (amd), which is a pure user space daemon.
  492. To use the automounter you need the user-space tools from the autofs
  493. package; you can find the location in <file:Documentation/Changes>.
  494. You also want to answer Y to "NFS file system support", below.
  495. If you want to use the newer version of the automounter with more
  496. features, say N here and say Y to "Kernel automounter v4 support",
  497. below.
  498. To compile this support as a module, choose M here: the module will be
  499. called autofs.
  500. If you are not a part of a fairly large, distributed network, you
  501. probably do not need an automounter, and can say N here.
  502. config AUTOFS4_FS
  503. tristate "Kernel automounter version 4 support (also supports v3)"
  504. help
  505. The automounter is a tool to automatically mount remote file systems
  506. on demand. This implementation is partially kernel-based to reduce
  507. overhead in the already-mounted case; this is unlike the BSD
  508. automounter (amd), which is a pure user space daemon.
  509. To use the automounter you need the user-space tools from
  510. <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
  511. want to answer Y to "NFS file system support", below.
  512. To compile this support as a module, choose M here: the module will be
  513. called autofs4. You will need to add "alias autofs autofs4" to your
  514. modules configuration file.
  515. If you are not a part of a fairly large, distributed network or
  516. don't have a laptop which needs to dynamically reconfigure to the
  517. local network, you probably do not need an automounter, and can say
  518. N here.
  519. config FUSE_FS
  520. tristate "Filesystem in Userspace support"
  521. help
  522. With FUSE it is possible to implement a fully functional filesystem
  523. in a userspace program.
  524. There's also companion library: libfuse. This library along with
  525. utilities is available from the FUSE homepage:
  526. <http://fuse.sourceforge.net/>
  527. See <file:Documentation/filesystems/fuse.txt> for more information.
  528. See <file:Documentation/Changes> for needed library/utility version.
  529. If you want to develop a userspace FS, or if you want to use
  530. a filesystem based on FUSE, answer Y or M.
  531. config GENERIC_ACL
  532. bool
  533. select FS_POSIX_ACL
  534. if BLOCK
  535. menu "CD-ROM/DVD Filesystems"
  536. config ISO9660_FS
  537. tristate "ISO 9660 CDROM file system support"
  538. help
  539. This is the standard file system used on CD-ROMs. It was previously
  540. known as "High Sierra File System" and is called "hsfs" on other
  541. Unix systems. The so-called Rock-Ridge extensions which allow for
  542. long Unix filenames and symbolic links are also supported by this
  543. driver. If you have a CD-ROM drive and want to do more with it than
  544. just listen to audio CDs and watch its LEDs, say Y (and read
  545. <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
  546. available from <http://www.tldp.org/docs.html#howto>), thereby
  547. enlarging your kernel by about 27 KB; otherwise say N.
  548. To compile this file system support as a module, choose M here: the
  549. module will be called isofs.
  550. config JOLIET
  551. bool "Microsoft Joliet CDROM extensions"
  552. depends on ISO9660_FS
  553. select NLS
  554. help
  555. Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
  556. which allows for long filenames in unicode format (unicode is the
  557. new 16 bit character code, successor to ASCII, which encodes the
  558. characters of almost all languages of the world; see
  559. <http://www.unicode.org/> for more information). Say Y here if you
  560. want to be able to read Joliet CD-ROMs under Linux.
  561. config ZISOFS
  562. bool "Transparent decompression extension"
  563. depends on ISO9660_FS
  564. select ZLIB_INFLATE
  565. help
  566. This is a Linux-specific extension to RockRidge which lets you store
  567. data in compressed form on a CD-ROM and have it transparently
  568. decompressed when the CD-ROM is accessed. See
  569. <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
  570. necessary to create such a filesystem. Say Y here if you want to be
  571. able to read such compressed CD-ROMs.
  572. config UDF_FS
  573. tristate "UDF file system support"
  574. help
  575. This is the new file system used on some CD-ROMs and DVDs. Say Y if
  576. you intend to mount DVD discs or CDRW's written in packet mode, or
  577. if written to by other UDF utilities, such as DirectCD.
  578. Please read <file:Documentation/filesystems/udf.txt>.
  579. To compile this file system support as a module, choose M here: the
  580. module will be called udf.
  581. If unsure, say N.
  582. config UDF_NLS
  583. bool
  584. default y
  585. depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
  586. endmenu
  587. endif
  588. if BLOCK
  589. menu "DOS/FAT/NT Filesystems"
  590. config FAT_FS
  591. tristate
  592. select NLS
  593. help
  594. If you want to use one of the FAT-based file systems (the MS-DOS and
  595. VFAT (Windows 95) file systems), then you must say Y or M here
  596. to include FAT support. You will then be able to mount partitions or
  597. diskettes with FAT-based file systems and transparently access the
  598. files on them, i.e. MSDOS files will look and behave just like all
  599. other Unix files.
  600. This FAT support is not a file system in itself, it only provides
  601. the foundation for the other file systems. You will have to say Y or
  602. M to at least one of "MSDOS fs support" or "VFAT fs support" in
  603. order to make use of it.
  604. Another way to read and write MSDOS floppies and hard drive
  605. partitions from within Linux (but not transparently) is with the
  606. mtools ("man mtools") program suite. You don't need to say Y here in
  607. order to do that.
  608. If you need to move large files on floppies between a DOS and a
  609. Linux box, say Y here, mount the floppy under Linux with an MSDOS
  610. file system and use GNU tar's M option. GNU tar is a program
  611. available for Unix and DOS ("man tar" or "info tar").
  612. The FAT support will enlarge your kernel by about 37 KB. If unsure,
  613. say Y.
  614. To compile this as a module, choose M here: the module will be called
  615. fat. Note that if you compile the FAT support as a module, you
  616. cannot compile any of the FAT-based file systems into the kernel
  617. -- they will have to be modules as well.
  618. config MSDOS_FS
  619. tristate "MSDOS fs support"
  620. select FAT_FS
  621. help
  622. This allows you to mount MSDOS partitions of your hard drive (unless
  623. they are compressed; to access compressed MSDOS partitions under
  624. Linux, you can either use the DOS emulator DOSEMU, described in the
  625. DOSEMU-HOWTO, available from
  626. <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
  627. <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
  628. intend to use dosemu with a non-compressed MSDOS partition, say Y
  629. here) and MSDOS floppies. This means that file access becomes
  630. transparent, i.e. the MSDOS files look and behave just like all
  631. other Unix files.
  632. If you have Windows 95 or Windows NT installed on your MSDOS
  633. partitions, you should use the VFAT file system (say Y to "VFAT fs
  634. support" below), or you will not be able to see the long filenames
  635. generated by Windows 95 / Windows NT.
  636. This option will enlarge your kernel by about 7 KB. If unsure,
  637. answer Y. This will only work if you said Y to "DOS FAT fs support"
  638. as well. To compile this as a module, choose M here: the module will
  639. be called msdos.
  640. config VFAT_FS
  641. tristate "VFAT (Windows-95) fs support"
  642. select FAT_FS
  643. help
  644. This option provides support for normal Windows file systems with
  645. long filenames. That includes non-compressed FAT-based file systems
  646. used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
  647. programs from the mtools package.
  648. The VFAT support enlarges your kernel by about 10 KB and it only
  649. works if you said Y to the "DOS FAT fs support" above. Please read
  650. the file <file:Documentation/filesystems/vfat.txt> for details. If
  651. unsure, say Y.
  652. To compile this as a module, choose M here: the module will be called
  653. vfat.
  654. config FAT_DEFAULT_CODEPAGE
  655. int "Default codepage for FAT"
  656. depends on MSDOS_FS || VFAT_FS
  657. default 437
  658. help
  659. This option should be set to the codepage of your FAT filesystems.
  660. It can be overridden with the "codepage" mount option.
  661. See <file:Documentation/filesystems/vfat.txt> for more information.
  662. config FAT_DEFAULT_IOCHARSET
  663. string "Default iocharset for FAT"
  664. depends on VFAT_FS
  665. default "iso8859-1"
  666. help
  667. Set this to the default input/output character set you'd
  668. like FAT to use. It should probably match the character set
  669. that most of your FAT filesystems use, and can be overridden
  670. with the "iocharset" mount option for FAT filesystems.
  671. Note that "utf8" is not recommended for FAT filesystems.
  672. If unsure, you shouldn't set "utf8" here.
  673. See <file:Documentation/filesystems/vfat.txt> for more information.
  674. config NTFS_FS
  675. tristate "NTFS file system support"
  676. select NLS
  677. help
  678. NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
  679. Saying Y or M here enables read support. There is partial, but
  680. safe, write support available. For write support you must also
  681. say Y to "NTFS write support" below.
  682. There are also a number of user-space tools available, called
  683. ntfsprogs. These include ntfsundelete and ntfsresize, that work
  684. without NTFS support enabled in the kernel.
  685. This is a rewrite from scratch of Linux NTFS support and replaced
  686. the old NTFS code starting with Linux 2.5.11. A backport to
  687. the Linux 2.4 kernel series is separately available as a patch
  688. from the project web site.
  689. For more information see <file:Documentation/filesystems/ntfs.txt>
  690. and <http://linux-ntfs.sourceforge.net/>.
  691. To compile this file system support as a module, choose M here: the
  692. module will be called ntfs.
  693. If you are not using Windows NT, 2000, XP or 2003 in addition to
  694. Linux on your computer it is safe to say N.
  695. config NTFS_DEBUG
  696. bool "NTFS debugging support"
  697. depends on NTFS_FS
  698. help
  699. If you are experiencing any problems with the NTFS file system, say
  700. Y here. This will result in additional consistency checks to be
  701. performed by the driver as well as additional debugging messages to
  702. be written to the system log. Note that debugging messages are
  703. disabled by default. To enable them, supply the option debug_msgs=1
  704. at the kernel command line when booting the kernel or as an option
  705. to insmod when loading the ntfs module. Once the driver is active,
  706. you can enable debugging messages by doing (as root):
  707. echo 1 > /proc/sys/fs/ntfs-debug
  708. Replacing the "1" with "0" would disable debug messages.
  709. If you leave debugging messages disabled, this results in little
  710. overhead, but enabling debug messages results in very significant
  711. slowdown of the system.
  712. When reporting bugs, please try to have available a full dump of
  713. debugging messages while the misbehaviour was occurring.
  714. config NTFS_RW
  715. bool "NTFS write support"
  716. depends on NTFS_FS
  717. help
  718. This enables the partial, but safe, write support in the NTFS driver.
  719. The only supported operation is overwriting existing files, without
  720. changing the file length. No file or directory creation, deletion or
  721. renaming is possible. Note only non-resident files can be written to
  722. so you may find that some very small files (<500 bytes or so) cannot
  723. be written to.
  724. While we cannot guarantee that it will not damage any data, we have
  725. so far not received a single report where the driver would have
  726. damaged someones data so we assume it is perfectly safe to use.
  727. Note: While write support is safe in this version (a rewrite from
  728. scratch of the NTFS support), it should be noted that the old NTFS
  729. write support, included in Linux 2.5.10 and before (since 1997),
  730. is not safe.
  731. This is currently useful with TopologiLinux. TopologiLinux is run
  732. on top of any DOS/Microsoft Windows system without partitioning your
  733. hard disk. Unlike other Linux distributions TopologiLinux does not
  734. need its own partition. For more information see
  735. <http://topologi-linux.sourceforge.net/>
  736. It is perfectly safe to say N here.
  737. endmenu
  738. endif
  739. menu "Pseudo filesystems"
  740. config PROC_FS
  741. bool "/proc file system support" if EMBEDDED
  742. default y
  743. help
  744. This is a virtual file system providing information about the status
  745. of the system. "Virtual" means that it doesn't take up any space on
  746. your hard disk: the files are created on the fly by the kernel when
  747. you try to access them. Also, you cannot read the files with older
  748. version of the program less: you need to use more or cat.
  749. It's totally cool; for example, "cat /proc/interrupts" gives
  750. information about what the different IRQs are used for at the moment
  751. (there is a small number of Interrupt ReQuest lines in your computer
  752. that are used by the attached devices to gain the CPU's attention --
  753. often a source of trouble if two devices are mistakenly configured
  754. to use the same IRQ). The program procinfo to display some
  755. information about your system gathered from the /proc file system.
  756. Before you can use the /proc file system, it has to be mounted,
  757. meaning it has to be given a location in the directory hierarchy.
  758. That location should be /proc. A command such as "mount -t proc proc
  759. /proc" or the equivalent line in /etc/fstab does the job.
  760. The /proc file system is explained in the file
  761. <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
  762. ("man 5 proc").
  763. This option will enlarge your kernel by about 67 KB. Several
  764. programs depend on this, so everyone should say Y here.
  765. config PROC_KCORE
  766. bool "/proc/kcore support" if !ARM
  767. depends on PROC_FS && MMU
  768. config PROC_VMCORE
  769. bool "/proc/vmcore support (EXPERIMENTAL)"
  770. depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
  771. default y
  772. help
  773. Exports the dump image of crashed kernel in ELF format.
  774. config PROC_SYSCTL
  775. bool "Sysctl support (/proc/sys)" if EMBEDDED
  776. depends on PROC_FS
  777. select SYSCTL
  778. default y
  779. ---help---
  780. The sysctl interface provides a means of dynamically changing
  781. certain kernel parameters and variables on the fly without requiring
  782. a recompile of the kernel or reboot of the system. The primary
  783. interface is through /proc/sys. If you say Y here a tree of
  784. modifiable sysctl entries will be generated beneath the
  785. /proc/sys directory. They are explained in the files
  786. in <file:Documentation/sysctl/>. Note that enabling this
  787. option will enlarge the kernel by at least 8 KB.
  788. As it is generally a good thing, you should say Y here unless
  789. building a kernel for install/rescue disks or your system is very
  790. limited in memory.
  791. config SYSFS
  792. bool "sysfs file system support" if EMBEDDED
  793. default y
  794. help
  795. The sysfs filesystem is a virtual filesystem that the kernel uses to
  796. export internal kernel objects, their attributes, and their
  797. relationships to one another.
  798. Users can use sysfs to ascertain useful information about the running
  799. kernel, such as the devices the kernel has discovered on each bus and
  800. which driver each is bound to. sysfs can also be used to tune devices
  801. and other kernel subsystems.
  802. Some system agents rely on the information in sysfs to operate.
  803. /sbin/hotplug uses device and object attributes in sysfs to assist in
  804. delegating policy decisions, like persistently naming devices.
  805. sysfs is currently used by the block subsystem to mount the root
  806. partition. If sysfs is disabled you must specify the boot device on
  807. the kernel boot command line via its major and minor numbers. For
  808. example, "root=03:01" for /dev/hda1.
  809. Designers of embedded systems may wish to say N here to conserve space.
  810. config TMPFS
  811. bool "Virtual memory file system support (former shm fs)"
  812. help
  813. Tmpfs is a file system which keeps all files in virtual memory.
  814. Everything in tmpfs is temporary in the sense that no files will be
  815. created on your hard drive. The files live in memory and swap
  816. space. If you unmount a tmpfs instance, everything stored therein is
  817. lost.
  818. See <file:Documentation/filesystems/tmpfs.txt> for details.
  819. config TMPFS_POSIX_ACL
  820. bool "Tmpfs POSIX Access Control Lists"
  821. depends on TMPFS
  822. select GENERIC_ACL
  823. help
  824. POSIX Access Control Lists (ACLs) support permissions for users and
  825. groups beyond the owner/group/world scheme.
  826. To learn more about Access Control Lists, visit the POSIX ACLs for
  827. Linux website <http://acl.bestbits.at/>.
  828. If you don't know what Access Control Lists are, say N.
  829. config HUGETLBFS
  830. bool "HugeTLB file system support"
  831. depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
  832. help
  833. hugetlbfs is a filesystem backing for HugeTLB pages, based on
  834. ramfs. For architectures that support it, say Y here and read
  835. <file:Documentation/vm/hugetlbpage.txt> for details.
  836. If unsure, say N.
  837. config HUGETLB_PAGE
  838. def_bool HUGETLBFS
  839. config CONFIGFS_FS
  840. tristate "Userspace-driven configuration filesystem"
  841. depends on SYSFS
  842. help
  843. configfs is a ram-based filesystem that provides the converse
  844. of sysfs's functionality. Where sysfs is a filesystem-based
  845. view of kernel objects, configfs is a filesystem-based manager
  846. of kernel objects, or config_items.
  847. Both sysfs and configfs can and should exist together on the
  848. same system. One is not a replacement for the other.
  849. endmenu
  850. menu "Miscellaneous filesystems"
  851. config ADFS_FS
  852. tristate "ADFS file system support (EXPERIMENTAL)"
  853. depends on BLOCK && EXPERIMENTAL
  854. help
  855. The Acorn Disc Filing System is the standard file system of the
  856. RiscOS operating system which runs on Acorn's ARM-based Risc PC
  857. systems and the Acorn Archimedes range of machines. If you say Y
  858. here, Linux will be able to read from ADFS partitions on hard drives
  859. and from ADFS-formatted floppy discs. If you also want to be able to
  860. write to those devices, say Y to "ADFS write support" below.
  861. The ADFS partition should be the first partition (i.e.,
  862. /dev/[hs]d?1) on each of your drives. Please read the file
  863. <file:Documentation/filesystems/adfs.txt> for further details.
  864. To compile this code as a module, choose M here: the module will be
  865. called adfs.
  866. If unsure, say N.
  867. config ADFS_FS_RW
  868. bool "ADFS write support (DANGEROUS)"
  869. depends on ADFS_FS
  870. help
  871. If you say Y here, you will be able to write to ADFS partitions on
  872. hard drives and ADFS-formatted floppy disks. This is experimental
  873. codes, so if you're unsure, say N.
  874. config AFFS_FS
  875. tristate "Amiga FFS file system support (EXPERIMENTAL)"
  876. depends on BLOCK && EXPERIMENTAL
  877. help
  878. The Fast File System (FFS) is the common file system used on hard
  879. disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
  880. if you want to be able to read and write files from and to an Amiga
  881. FFS partition on your hard drive. Amiga floppies however cannot be
  882. read with this driver due to an incompatibility of the floppy
  883. controller used in an Amiga and the standard floppy controller in
  884. PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
  885. and <file:fs/affs/Changes>.
  886. With this driver you can also mount disk files used by Bernd
  887. Schmidt's Un*X Amiga Emulator
  888. (<http://www.freiburg.linux.de/~uae/>).
  889. If you want to do this, you will also need to say Y or M to "Loop
  890. device support", above.
  891. To compile this file system support as a module, choose M here: the
  892. module will be called affs. If unsure, say N.
  893. config ECRYPT_FS
  894. tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
  895. depends on EXPERIMENTAL && KEYS && CRYPTO && NET
  896. help
  897. Encrypted filesystem that operates on the VFS layer. See
  898. <file:Documentation/filesystems/ecryptfs.txt> to learn more about
  899. eCryptfs. Userspace components are required and can be
  900. obtained from <http://ecryptfs.sf.net>.
  901. To compile this file system support as a module, choose M here: the
  902. module will be called ecryptfs.
  903. config HFS_FS
  904. tristate "Apple Macintosh file system support (EXPERIMENTAL)"
  905. depends on BLOCK && EXPERIMENTAL
  906. select NLS
  907. help
  908. If you say Y here, you will be able to mount Macintosh-formatted
  909. floppy disks and hard drive partitions with full read-write access.
  910. Please read <file:Documentation/filesystems/hfs.txt> to learn about
  911. the available mount options.
  912. To compile this file system support as a module, choose M here: the
  913. module will be called hfs.
  914. config HFSPLUS_FS
  915. tristate "Apple Extended HFS file system support"
  916. depends on BLOCK
  917. select NLS
  918. select NLS_UTF8
  919. help
  920. If you say Y here, you will be able to mount extended format
  921. Macintosh-formatted hard drive partitions with full read-write access.
  922. This file system is often called HFS+ and was introduced with
  923. MacOS 8. It includes all Mac specific filesystem data such as
  924. data forks and creator codes, but it also has several UNIX
  925. style features such as file ownership and permissions.
  926. config BEFS_FS
  927. tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
  928. depends on BLOCK && EXPERIMENTAL
  929. select NLS
  930. help
  931. The BeOS File System (BeFS) is the native file system of Be, Inc's
  932. BeOS. Notable features include support for arbitrary attributes
  933. on files and directories, and database-like indices on selected
  934. attributes. (Also note that this driver doesn't make those features
  935. available at this time). It is a 64 bit filesystem, so it supports
  936. extremely large volumes and files.
  937. If you use this filesystem, you should also say Y to at least one
  938. of the NLS (native language support) options below.
  939. If you don't know what this is about, say N.
  940. To compile this as a module, choose M here: the module will be
  941. called befs.
  942. config BEFS_DEBUG
  943. bool "Debug BeFS"
  944. depends on BEFS_FS
  945. help
  946. If you say Y here, you can use the 'debug' mount option to enable
  947. debugging output from the driver.
  948. config BFS_FS
  949. tristate "BFS file system support (EXPERIMENTAL)"
  950. depends on BLOCK && EXPERIMENTAL
  951. help
  952. Boot File System (BFS) is a file system used under SCO UnixWare to
  953. allow the bootloader access to the kernel image and other important
  954. files during the boot process. It is usually mounted under /stand
  955. and corresponds to the slice marked as "STAND" in the UnixWare
  956. partition. You should say Y if you want to read or write the files
  957. on your /stand slice from within Linux. You then also need to say Y
  958. to "UnixWare slices support", below. More information about the BFS
  959. file system is contained in the file
  960. <file:Documentation/filesystems/bfs.txt>.
  961. If you don't know what this is about, say N.
  962. To compile this as a module, choose M here: the module will be called
  963. bfs. Note that the file system of your root partition (the one
  964. containing the directory /) cannot be compiled as a module.
  965. config EFS_FS
  966. tristate "EFS file system support (read only) (EXPERIMENTAL)"
  967. depends on BLOCK && EXPERIMENTAL
  968. help
  969. EFS is an older file system used for non-ISO9660 CD-ROMs and hard
  970. disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
  971. uses the XFS file system for hard disk partitions however).
  972. This implementation only offers read-only access. If you don't know
  973. what all this is about, it's safe to say N. For more information
  974. about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
  975. To compile the EFS file system support as a module, choose M here: the
  976. module will be called efs.
  977. config JFFS2_FS
  978. tristate "Journalling Flash File System v2 (JFFS2) support"
  979. select CRC32
  980. depends on MTD
  981. help
  982. JFFS2 is the second generation of the Journalling Flash File System
  983. for use on diskless embedded devices. It provides improved wear
  984. levelling, compression and support for hard links. You cannot use
  985. this on normal block devices, only on 'MTD' devices.
  986. Further information on the design and implementation of JFFS2 is
  987. available at <http://sources.redhat.com/jffs2/>.
  988. config JFFS2_FS_DEBUG
  989. int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
  990. depends on JFFS2_FS
  991. default "0"
  992. help
  993. This controls the amount of debugging messages produced by the JFFS2
  994. code. Set it to zero for use in production systems. For evaluation,
  995. testing and debugging, it's advisable to set it to one. This will
  996. enable a few assertions and will print debugging messages at the
  997. KERN_DEBUG loglevel, where they won't normally be visible. Level 2
  998. is unlikely to be useful - it enables extra debugging in certain
  999. areas which at one point needed debugging, but when the bugs were
  1000. located and fixed, the detailed messages were relegated to level 2.
  1001. If reporting bugs, please try to have available a full dump of the
  1002. messages at debug level 1 while the misbehaviour was occurring.
  1003. config JFFS2_FS_WRITEBUFFER
  1004. bool "JFFS2 write-buffering support"
  1005. depends on JFFS2_FS
  1006. default y
  1007. help
  1008. This enables the write-buffering support in JFFS2.
  1009. This functionality is required to support JFFS2 on the following
  1010. types of flash devices:
  1011. - NAND flash
  1012. - NOR flash with transparent ECC
  1013. - DataFlash
  1014. config JFFS2_FS_WBUF_VERIFY
  1015. bool "Verify JFFS2 write-buffer reads"
  1016. depends on JFFS2_FS_WRITEBUFFER
  1017. default n
  1018. help
  1019. This causes JFFS2 to read back every page written through the
  1020. write-buffer, and check for errors.
  1021. config JFFS2_SUMMARY
  1022. bool "JFFS2 summary support (EXPERIMENTAL)"
  1023. depends on JFFS2_FS && EXPERIMENTAL
  1024. default n
  1025. help
  1026. This feature makes it possible to use summary information
  1027. for faster filesystem mount.
  1028. The summary information can be inserted into a filesystem image
  1029. by the utility 'sumtool'.
  1030. If unsure, say 'N'.
  1031. config JFFS2_FS_XATTR
  1032. bool "JFFS2 XATTR support (EXPERIMENTAL)"
  1033. depends on JFFS2_FS && EXPERIMENTAL
  1034. default n
  1035. help
  1036. Extended attributes are name:value pairs associated with inodes by
  1037. the kernel or by users (see the attr(5) manual page, or visit
  1038. <http://acl.bestbits.at/> for details).
  1039. If unsure, say N.
  1040. config JFFS2_FS_POSIX_ACL
  1041. bool "JFFS2 POSIX Access Control Lists"
  1042. depends on JFFS2_FS_XATTR
  1043. default y
  1044. select FS_POSIX_ACL
  1045. help
  1046. Posix Access Control Lists (ACLs) support permissions for users and
  1047. groups beyond the owner/group/world scheme.
  1048. To learn more about Access Control Lists, visit the Posix ACLs for
  1049. Linux website <http://acl.bestbits.at/>.
  1050. If you don't know what Access Control Lists are, say N
  1051. config JFFS2_FS_SECURITY
  1052. bool "JFFS2 Security Labels"
  1053. depends on JFFS2_FS_XATTR
  1054. default y
  1055. help
  1056. Security labels support alternative access control models
  1057. implemented by security modules like SELinux. This option
  1058. enables an extended attribute handler for file security
  1059. labels in the jffs2 filesystem.
  1060. If you are not using a security module that requires using
  1061. extended attributes for file security labels, say N.
  1062. config JFFS2_COMPRESSION_OPTIONS
  1063. bool "Advanced compression options for JFFS2"
  1064. depends on JFFS2_FS
  1065. default n
  1066. help
  1067. Enabling this option allows you to explicitly choose which
  1068. compression modules, if any, are enabled in JFFS2. Removing
  1069. compressors can mean you cannot read existing file systems,
  1070. and enabling experimental compressors can mean that you
  1071. write a file system which cannot be read by a standard kernel.
  1072. If unsure, you should _definitely_ say 'N'.
  1073. config JFFS2_ZLIB
  1074. bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
  1075. select ZLIB_INFLATE
  1076. select ZLIB_DEFLATE
  1077. depends on JFFS2_FS
  1078. default y
  1079. help
  1080. Zlib is designed to be a free, general-purpose, legally unencumbered,
  1081. lossless data-compression library for use on virtually any computer
  1082. hardware and operating system. See <http://www.gzip.org/zlib/> for
  1083. further information.
  1084. Say 'Y' if unsure.
  1085. config JFFS2_LZO
  1086. bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
  1087. select LZO_COMPRESS
  1088. select LZO_DECOMPRESS
  1089. depends on JFFS2_FS
  1090. default n
  1091. help
  1092. minilzo-based compression. Generally works better than Zlib.
  1093. This feature was added in July, 2007. Say 'N' if you need
  1094. compatibility with older bootloaders or kernels.
  1095. config JFFS2_RTIME
  1096. bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
  1097. depends on JFFS2_FS
  1098. default y
  1099. help
  1100. Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
  1101. config JFFS2_RUBIN
  1102. bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
  1103. depends on JFFS2_FS
  1104. default n
  1105. help
  1106. RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
  1107. choice
  1108. prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
  1109. default JFFS2_CMODE_PRIORITY
  1110. depends on JFFS2_FS
  1111. help
  1112. You can set here the default compression mode of JFFS2 from
  1113. the available compression modes. Don't touch if unsure.
  1114. config JFFS2_CMODE_NONE
  1115. bool "no compression"
  1116. help
  1117. Uses no compression.
  1118. config JFFS2_CMODE_PRIORITY
  1119. bool "priority"
  1120. help
  1121. Tries the compressors in a predefined order and chooses the first
  1122. successful one.
  1123. config JFFS2_CMODE_SIZE
  1124. bool "size (EXPERIMENTAL)"
  1125. help
  1126. Tries all compressors and chooses the one which has the smallest
  1127. result.
  1128. config JFFS2_CMODE_FAVOURLZO
  1129. bool "Favour LZO"
  1130. help
  1131. Tries all compressors and chooses the one which has the smallest
  1132. result but gives some preference to LZO (which has faster
  1133. decompression) at the expense of size.
  1134. endchoice
  1135. config CRAMFS
  1136. tristate "Compressed ROM file system support (cramfs)"
  1137. depends on BLOCK
  1138. select ZLIB_INFLATE
  1139. help
  1140. Saying Y here includes support for CramFs (Compressed ROM File
  1141. System). CramFs is designed to be a simple, small, and compressed
  1142. file system for ROM based embedded systems. CramFs is read-only,
  1143. limited to 256MB file systems (with 16MB files), and doesn't support
  1144. 16/32 bits uid/gid, hard links and timestamps.
  1145. See <file:Documentation/filesystems/cramfs.txt> and
  1146. <file:fs/cramfs/README> for further information.
  1147. To compile this as a module, choose M here: the module will be called
  1148. cramfs. Note that the root file system (the one containing the
  1149. directory /) cannot be compiled as a module.
  1150. If unsure, say N.
  1151. config VXFS_FS
  1152. tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
  1153. depends on BLOCK
  1154. help
  1155. FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
  1156. file system format. VERITAS VxFS(TM) is the standard file system
  1157. of SCO UnixWare (and possibly others) and optionally available
  1158. for Sunsoft Solaris, HP-UX and many other operating systems.
  1159. Currently only readonly access is supported.
  1160. NOTE: the file system type as used by mount(1), mount(2) and
  1161. fstab(5) is 'vxfs' as it describes the file system format, not
  1162. the actual driver.
  1163. To compile this as a module, choose M here: the module will be
  1164. called freevxfs. If unsure, say N.
  1165. config HPFS_FS
  1166. tristate "OS/2 HPFS file system support"
  1167. depends on BLOCK
  1168. help
  1169. OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  1170. is the file system used for organizing files on OS/2 hard disk
  1171. partitions. Say Y if you want to be able to read files from and
  1172. write files to an OS/2 HPFS partition on your hard drive. OS/2
  1173. floppies however are in regular MSDOS format, so you don't need this
  1174. option in order to be able to read them. Read
  1175. <file:Documentation/filesystems/hpfs.txt>.
  1176. To compile this file system support as a module, choose M here: the
  1177. module will be called hpfs. If unsure, say N.
  1178. config QNX4FS_FS
  1179. tristate "QNX4 file system support (read only)"
  1180. depends on BLOCK
  1181. help
  1182. This is the file system used by the real-time operating systems
  1183. QNX 4 and QNX 6 (the latter is also called QNX RTP).
  1184. Further information is available at <http://www.qnx.com/>.
  1185. Say Y if you intend to mount QNX hard disks or floppies.
  1186. Unless you say Y to "QNX4FS read-write support" below, you will
  1187. only be able to read these file systems.
  1188. To compile this file system support as a module, choose M here: the
  1189. module will be called qnx4.
  1190. If you don't know whether you need it, then you don't need it:
  1191. answer N.
  1192. config QNX4FS_RW
  1193. bool "QNX4FS write support (DANGEROUS)"
  1194. depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
  1195. help
  1196. Say Y if you want to test write support for QNX4 file systems.
  1197. It's currently broken, so for now:
  1198. answer N.
  1199. config SYSV_FS
  1200. tristate "System V/Xenix/V7/Coherent file system support"
  1201. depends on BLOCK
  1202. help
  1203. SCO, Xenix and Coherent are commercial Unix systems for Intel
  1204. machines, and Version 7 was used on the DEC PDP-11. Saying Y
  1205. here would allow you to read from their floppies and hard disk
  1206. partitions.
  1207. If you have floppies or hard disk partitions like that, it is likely
  1208. that they contain binaries from those other Unix systems; in order
  1209. to run these binaries, you will want to install linux-abi which is
  1210. a set of kernel modules that lets you run SCO, Xenix, Wyse,
  1211. UnixWare, Dell Unix and System V programs under Linux. It is
  1212. available via FTP (user: ftp) from
  1213. <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
  1214. NOTE: that will work only for binaries from Intel-based systems;
  1215. PDP ones will have to wait until somebody ports Linux to -11 ;-)
  1216. If you only intend to mount files from some other Unix over the
  1217. network using NFS, you don't need the System V file system support
  1218. (but you need NFS file system support obviously).
  1219. Note that this option is generally not needed for floppies, since a
  1220. good portable way to transport files and directories between unixes
  1221. (and even other operating systems) is given by the tar program ("man
  1222. tar" or preferably "info tar"). Note also that this option has
  1223. nothing whatsoever to do with the option "System V IPC". Read about
  1224. the System V file system in
  1225. <file:Documentation/filesystems/sysv-fs.txt>.
  1226. Saying Y here will enlarge your kernel by about 27 KB.
  1227. To compile this as a module, choose M here: the module will be called
  1228. sysv.
  1229. If you haven't heard about all of this before, it's safe to say N.
  1230. config UFS_FS
  1231. tristate "UFS file system support (read only)"
  1232. depends on BLOCK
  1233. help
  1234. BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
  1235. OpenBSD and NeXTstep) use a file system called UFS. Some System V
  1236. Unixes can create and mount hard disk partitions and diskettes using
  1237. this file system as well. Saying Y here will allow you to read from
  1238. these partitions; if you also want to write to them, say Y to the
  1239. experimental "UFS file system write support", below. Please read the
  1240. file <file:Documentation/filesystems/ufs.txt> for more information.
  1241. The recently released UFS2 variant (used in FreeBSD 5.x) is
  1242. READ-ONLY supported.
  1243. If you only intend to mount files from some other Unix over the
  1244. network using NFS, you don't need the UFS file system support (but
  1245. you need NFS file system support obviously).
  1246. Note that this option is generally not needed for floppies, since a
  1247. good portable way to transport files and directories between unixes
  1248. (and even other operating systems) is given by the tar program ("man
  1249. tar" or preferably "info tar").
  1250. When accessing NeXTstep files, you may need to convert them from the
  1251. NeXT character set to the Latin1 character set; use the program
  1252. recode ("info recode") for this purpose.
  1253. To compile the UFS file system support as a module, choose M here: the
  1254. module will be called ufs.
  1255. If you haven't heard about all of this before, it's safe to say N.
  1256. config UFS_FS_WRITE
  1257. bool "UFS file system write support (DANGEROUS)"
  1258. depends on UFS_FS && EXPERIMENTAL
  1259. help
  1260. Say Y here if you want to try writing to UFS partitions. This is
  1261. experimental, so you should back up your UFS partitions beforehand.
  1262. config UFS_DEBUG
  1263. bool "UFS debugging"
  1264. depends on UFS_FS
  1265. help
  1266. If you are experiencing any problems with the UFS filesystem, say
  1267. Y here. This will result in _many_ additional debugging messages to be
  1268. written to the system log.
  1269. endmenu
  1270. menuconfig NETWORK_FILESYSTEMS
  1271. bool "Network File Systems"
  1272. default y
  1273. depends on NET
  1274. ---help---
  1275. Say Y here to get to see options for network filesystems and
  1276. filesystem-related networking code, such as NFS daemon and
  1277. RPCSEC security modules.
  1278. This option alone does not add any kernel code.
  1279. If you say N, all options in this submenu will be skipped and
  1280. disabled; if unsure, say Y here.
  1281. if NETWORK_FILESYSTEMS
  1282. config NFS_FS
  1283. tristate "NFS file system support"
  1284. depends on INET
  1285. select LOCKD
  1286. select SUNRPC
  1287. select NFS_ACL_SUPPORT if NFS_V3_ACL
  1288. help
  1289. If you are connected to some other (usually local) Unix computer
  1290. (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
  1291. on that computer (the NFS server) using the Network File Sharing
  1292. protocol, say Y. "Mounting files" means that the client can access
  1293. the files with usual UNIX commands as if they were sitting on the
  1294. client's hard disk. For this to work, the server must run the
  1295. programs nfsd and mountd (but does not need to have NFS file system
  1296. support enabled in its kernel). NFS is explained in the Network
  1297. Administrator's Guide, available from
  1298. <http://www.tldp.org/docs.html#guide>, on its man page: "man
  1299. nfs", and in the NFS-HOWTO.
  1300. A superior but less widely used alternative to NFS is provided by
  1301. the Coda file system; see "Coda file system support" below.
  1302. If you say Y here, you should have said Y to TCP/IP networking also.
  1303. This option would enlarge your kernel by about 27 KB.
  1304. To compile this file system support as a module, choose M here: the
  1305. module will be called nfs.
  1306. If you are configuring a diskless machine which will mount its root
  1307. file system over NFS at boot time, say Y here and to "Kernel
  1308. level IP autoconfiguration" above and to "Root file system on NFS"
  1309. below. You cannot compile this driver as a module in this case.
  1310. There are two packages designed for booting diskless machines over
  1311. the net: netboot, available from
  1312. <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
  1313. available from <http://ftp1.sourceforge.net/etherboot/>.
  1314. If you don't know what all this is about, say N.
  1315. config NFS_V3
  1316. bool "Provide NFSv3 client support"
  1317. depends on NFS_FS
  1318. help
  1319. Say Y here if you want your NFS client to be able to speak version
  1320. 3 of the NFS protocol.
  1321. If unsure, say Y.
  1322. config NFS_V3_ACL
  1323. bool "Provide client support for the NFSv3 ACL protocol extension"
  1324. depends on NFS_V3
  1325. help
  1326. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1327. Access Control Lists. The server should also be compiled with
  1328. the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
  1329. If unsure, say N.
  1330. config NFS_V4
  1331. bool "Provide NFSv4 client support (EXPERIMENTAL)"
  1332. depends on NFS_FS && EXPERIMENTAL
  1333. select RPCSEC_GSS_KRB5
  1334. help
  1335. Say Y here if you want your NFS client to be able to speak the newer
  1336. version 4 of the NFS protocol.
  1337. Note: Requires auxiliary userspace daemons which may be found on
  1338. http://www.citi.umich.edu/projects/nfsv4/
  1339. If unsure, say N.
  1340. config NFS_DIRECTIO
  1341. bool "Allow direct I/O on NFS files"
  1342. depends on NFS_FS
  1343. help
  1344. This option enables applications to perform uncached I/O on files
  1345. in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
  1346. is set for a file, its data is not cached in the system's page
  1347. cache. Data is moved to and from user-level application buffers
  1348. directly. Unlike local disk-based file systems, NFS O_DIRECT has
  1349. no alignment restrictions.
  1350. Unless your program is designed to use O_DIRECT properly, you are
  1351. much better off allowing the NFS client to manage data caching for
  1352. you. Misusing O_DIRECT can cause poor server performance or network
  1353. storms. This kernel build option defaults OFF to avoid exposing
  1354. system administrators unwittingly to a potentially hazardous
  1355. feature.
  1356. For more details on NFS O_DIRECT, see fs/nfs/direct.c.
  1357. If unsure, say N. This reduces the size of the NFS client, and
  1358. causes open() to return EINVAL if a file residing in NFS is
  1359. opened with the O_DIRECT flag.
  1360. config NFSD
  1361. tristate "NFS server support"
  1362. depends on INET
  1363. select LOCKD
  1364. select SUNRPC
  1365. select EXPORTFS
  1366. select NFSD_V2_ACL if NFSD_V3_ACL
  1367. select NFS_ACL_SUPPORT if NFSD_V2_ACL
  1368. select NFSD_TCP if NFSD_V4
  1369. select CRYPTO_MD5 if NFSD_V4
  1370. select CRYPTO if NFSD_V4
  1371. select FS_POSIX_ACL if NFSD_V4
  1372. select PROC_FS if NFSD_V4
  1373. select PROC_FS if SUNRPC_GSS
  1374. help
  1375. If you want your Linux box to act as an NFS *server*, so that other
  1376. computers on your local network which support NFS can access certain
  1377. directories on your box transparently, you have two options: you can
  1378. use the self-contained user space program nfsd, in which case you
  1379. should say N here, or you can say Y and use the kernel based NFS
  1380. server. The advantage of the kernel based solution is that it is
  1381. faster.
  1382. In either case, you will need support software; the respective
  1383. locations are given in the file <file:Documentation/Changes> in the
  1384. NFS section.
  1385. If you say Y here, you will get support for version 2 of the NFS
  1386. protocol (NFSv2). If you also want NFSv3, say Y to the next question
  1387. as well.
  1388. Please read the NFS-HOWTO, available from
  1389. <http://www.tldp.org/docs.html#howto>.
  1390. To compile the NFS server support as a module, choose M here: the
  1391. module will be called nfsd. If unsure, say N.
  1392. config NFSD_V2_ACL
  1393. bool
  1394. depends on NFSD
  1395. config NFSD_V3
  1396. bool "Provide NFSv3 server support"
  1397. depends on NFSD
  1398. help
  1399. If you would like to include the NFSv3 server as well as the NFSv2
  1400. server, say Y here. If unsure, say Y.
  1401. config NFSD_V3_ACL
  1402. bool "Provide server support for the NFSv3 ACL protocol extension"
  1403. depends on NFSD_V3
  1404. help
  1405. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1406. Access Control Lists on exported file systems. NFS clients should
  1407. be compiled with the NFSv3 ACL protocol extension; see the
  1408. CONFIG_NFS_V3_ACL option. If unsure, say N.
  1409. config NFSD_V4
  1410. bool "Provide NFSv4 server support (EXPERIMENTAL)"
  1411. depends on NFSD && NFSD_V3 && EXPERIMENTAL
  1412. select RPCSEC_GSS_KRB5
  1413. help
  1414. If you would like to include the NFSv4 server as well as the NFSv2
  1415. and NFSv3 servers, say Y here. This feature is experimental, and
  1416. should only be used if you are interested in helping to test NFSv4.
  1417. If unsure, say N.
  1418. config NFSD_TCP
  1419. bool "Provide NFS server over TCP support"
  1420. depends on NFSD
  1421. default y
  1422. help
  1423. If you want your NFS server to support TCP connections, say Y here.
  1424. TCP connections usually perform better than the default UDP when
  1425. the network is lossy or congested. If unsure, say Y.
  1426. config ROOT_NFS
  1427. bool "Root file system on NFS"
  1428. depends on NFS_FS=y && IP_PNP
  1429. help
  1430. If you want your Linux box to mount its whole root file system (the
  1431. one containing the directory /) from some other computer over the
  1432. net via NFS (presumably because your box doesn't have a hard disk),
  1433. say Y. Read <file:Documentation/nfsroot.txt> for details. It is
  1434. likely that in this case, you also want to say Y to "Kernel level IP
  1435. autoconfiguration" so that your box can discover its network address
  1436. at boot time.
  1437. Most people say N here.
  1438. config LOCKD
  1439. tristate
  1440. config LOCKD_V4
  1441. bool
  1442. depends on NFSD_V3 || NFS_V3
  1443. default y
  1444. config EXPORTFS
  1445. tristate
  1446. config NFS_ACL_SUPPORT
  1447. tristate
  1448. select FS_POSIX_ACL
  1449. config NFS_COMMON
  1450. bool
  1451. depends on NFSD || NFS_FS
  1452. default y
  1453. config SUNRPC
  1454. tristate
  1455. config SUNRPC_GSS
  1456. tristate
  1457. config SUNRPC_XPRT_RDMA
  1458. tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
  1459. depends on SUNRPC && INFINIBAND && EXPERIMENTAL
  1460. default m
  1461. help
  1462. Adds a client RPC transport for supporting kernel NFS over RDMA
  1463. mounts, including Infiniband and iWARP. Experimental.
  1464. config SUNRPC_BIND34
  1465. bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
  1466. depends on SUNRPC && EXPERIMENTAL
  1467. help
  1468. Provides kernel support for querying rpcbind servers via versions 3
  1469. and 4 of the rpcbind protocol. The kernel automatically falls back
  1470. to version 2 if a remote rpcbind service does not support versions
  1471. 3 or 4.
  1472. If unsure, say N to get traditional behavior (version 2 rpcbind
  1473. requests only).
  1474. config RPCSEC_GSS_KRB5
  1475. tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
  1476. depends on SUNRPC && EXPERIMENTAL
  1477. select SUNRPC_GSS
  1478. select CRYPTO
  1479. select CRYPTO_MD5
  1480. select CRYPTO_DES
  1481. select CRYPTO_CBC
  1482. help
  1483. Provides for secure RPC calls by means of a gss-api
  1484. mechanism based on Kerberos V5. This is required for
  1485. NFSv4.
  1486. Note: Requires an auxiliary userspace daemon which may be found on
  1487. http://www.citi.umich.edu/projects/nfsv4/
  1488. If unsure, say N.
  1489. config RPCSEC_GSS_SPKM3
  1490. tristate "Secure RPC: SPKM3 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_CAST5
  1497. select CRYPTO_CBC
  1498. help
  1499. Provides for secure RPC calls by means of a gss-api
  1500. mechanism based on the SPKM3 public-key mechanism.
  1501. Note: Requires an auxiliary userspace daemon which may be found on
  1502. http://www.citi.umich.edu/projects/nfsv4/
  1503. If unsure, say N.
  1504. config SMB_FS
  1505. tristate "SMB file system support (to mount Windows shares etc.)"
  1506. depends on INET
  1507. select NLS
  1508. help
  1509. SMB (Server Message Block) is the protocol Windows for Workgroups
  1510. (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
  1511. files and printers over local networks. Saying Y here allows you to
  1512. mount their file systems (often called "shares" in this context) and
  1513. access them just like any other Unix directory. Currently, this
  1514. works only if the Windows machines use TCP/IP as the underlying
  1515. transport protocol, and not NetBEUI. For details, read
  1516. <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
  1517. available from <http://www.tldp.org/docs.html#howto>.
  1518. Note: if you just want your box to act as an SMB *server* and make
  1519. files and printing services available to Windows clients (which need
  1520. to have a TCP/IP stack), you don't need to say Y here; you can use
  1521. the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
  1522. for that.
  1523. General information about how to connect Linux, Windows machines and
  1524. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1525. To compile the SMB support as a module, choose M here: the module will
  1526. be called smbfs. Most people say N, however.
  1527. config SMB_NLS_DEFAULT
  1528. bool "Use a default NLS"
  1529. depends on SMB_FS
  1530. help
  1531. Enabling this will make smbfs use nls translations by default. You
  1532. need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
  1533. settings and you need to give the default nls for the SMB server as
  1534. CONFIG_SMB_NLS_REMOTE.
  1535. The nls settings can be changed at mount time, if your smbmount
  1536. supports that, using the codepage and iocharset parameters.
  1537. smbmount from samba 2.2.0 or later supports this.
  1538. config SMB_NLS_REMOTE
  1539. string "Default Remote NLS Option"
  1540. depends on SMB_NLS_DEFAULT
  1541. default "cp437"
  1542. help
  1543. This setting allows you to specify a default value for which
  1544. codepage the server uses. If this field is left blank no
  1545. translations will be done by default. The local codepage/charset
  1546. default to CONFIG_NLS_DEFAULT.
  1547. The nls settings can be changed at mount time, if your smbmount
  1548. supports that, using the codepage and iocharset parameters.
  1549. smbmount from samba 2.2.0 or later supports this.
  1550. config CIFS
  1551. tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
  1552. depends on INET
  1553. select NLS
  1554. help
  1555. This is the client VFS module for the Common Internet File System
  1556. (CIFS) protocol which is the successor to the Server Message Block
  1557. (SMB) protocol, the native file sharing mechanism for most early
  1558. PC operating systems. The CIFS protocol is fully supported by
  1559. file servers such as Windows 2000 (including Windows 2003, NT 4
  1560. and Windows XP) as well by Samba (which provides excellent CIFS
  1561. server support for Linux and many other operating systems). Limited
  1562. support for OS/2 and Windows ME and similar servers is provided as
  1563. well.
  1564. The cifs module provides an advanced network file system
  1565. client for mounting to CIFS compliant servers. It includes
  1566. support for DFS (hierarchical name space), secure per-user
  1567. session establishment via Kerberos or NTLM or NTLMv2,
  1568. safe distributed caching (oplock), optional packet
  1569. signing, Unicode and other internationalization improvements.
  1570. If you need to mount to Samba or Windows from this machine, say Y.
  1571. config CIFS_STATS
  1572. bool "CIFS statistics"
  1573. depends on CIFS
  1574. help
  1575. Enabling this option will cause statistics for each server share
  1576. mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
  1577. config CIFS_STATS2
  1578. bool "Extended statistics"
  1579. depends on CIFS_STATS
  1580. help
  1581. Enabling this option will allow more detailed statistics on SMB
  1582. request timing to be displayed in /proc/fs/cifs/DebugData and also
  1583. allow optional logging of slow responses to dmesg (depending on the
  1584. value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
  1585. These additional statistics may have a minor effect on performance
  1586. and memory utilization.
  1587. Unless you are a developer or are doing network performance analysis
  1588. or tuning, say N.
  1589. config CIFS_WEAK_PW_HASH
  1590. bool "Support legacy servers which use weaker LANMAN security"
  1591. depends on CIFS
  1592. help
  1593. Modern CIFS servers including Samba and most Windows versions
  1594. (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
  1595. security mechanisms. These hash the password more securely
  1596. than the mechanisms used in the older LANMAN version of the
  1597. SMB protocol but LANMAN based authentication is needed to
  1598. establish sessions with some old SMB servers.
  1599. Enabling this option allows the cifs module to mount to older
  1600. LANMAN based servers such as OS/2 and Windows 95, but such
  1601. mounts may be less secure than mounts using NTLM or more recent
  1602. security mechanisms if you are on a public network. Unless you
  1603. have a need to access old SMB servers (and are on a private
  1604. network) you probably want to say N. Even if this support
  1605. is enabled in the kernel build, LANMAN authentication will not be
  1606. used automatically. At runtime LANMAN mounts are disabled but
  1607. can be set to required (or optional) either in
  1608. /proc/fs/cifs (see fs/cifs/README for more detail) or via an
  1609. option on the mount command. This support is disabled by
  1610. default in order to reduce the possibility of a downgrade
  1611. attack.
  1612. If unsure, say N.
  1613. config CIFS_XATTR
  1614. bool "CIFS extended attributes"
  1615. depends on CIFS
  1616. help
  1617. Extended attributes are name:value pairs associated with inodes by
  1618. the kernel or by users (see the attr(5) manual page, or visit
  1619. <http://acl.bestbits.at/> for details). CIFS maps the name of
  1620. extended attributes beginning with the user namespace prefix
  1621. to SMB/CIFS EAs. EAs are stored on Windows servers without the
  1622. user namespace prefix, but their names are seen by Linux cifs clients
  1623. prefaced by the user namespace prefix. The system namespace
  1624. (used by some filesystems to store ACLs) is not supported at
  1625. this time.
  1626. If unsure, say N.
  1627. config CIFS_POSIX
  1628. bool "CIFS POSIX Extensions"
  1629. depends on CIFS_XATTR
  1630. help
  1631. Enabling this option will cause the cifs client to attempt to
  1632. negotiate a newer dialect with servers, such as Samba 3.0.5
  1633. or later, that optionally can handle more POSIX like (rather
  1634. than Windows like) file behavior. It also enables
  1635. support for POSIX ACLs (getfacl and setfacl) to servers
  1636. (such as Samba 3.10 and later) which can negotiate
  1637. CIFS POSIX ACL support. If unsure, say N.
  1638. config CIFS_DEBUG2
  1639. bool "Enable additional CIFS debugging routines"
  1640. depends on CIFS
  1641. help
  1642. Enabling this option adds a few more debugging routines
  1643. to the cifs code which slightly increases the size of
  1644. the cifs module and can cause additional logging of debug
  1645. messages in some error paths, slowing performance. This
  1646. option can be turned off unless you are debugging
  1647. cifs problems. If unsure, say N.
  1648. config CIFS_EXPERIMENTAL
  1649. bool "CIFS Experimental Features (EXPERIMENTAL)"
  1650. depends on CIFS && EXPERIMENTAL
  1651. help
  1652. Enables cifs features under testing. These features are
  1653. experimental and currently include DFS support and directory
  1654. change notification ie fcntl(F_DNOTIFY), as well as the upcall
  1655. mechanism which will be used for Kerberos session negotiation
  1656. and uid remapping. Some of these features also may depend on
  1657. setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
  1658. (which is disabled by default). See the file fs/cifs/README
  1659. for more details. If unsure, say N.
  1660. config CIFS_UPCALL
  1661. bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
  1662. depends on CIFS_EXPERIMENTAL
  1663. depends on KEYS
  1664. help
  1665. Enables an upcall mechanism for CIFS which accesses
  1666. userspace helper utilities to provide SPNEGO packaged (RFC 4178)
  1667. Kerberos tickets which are needed to mount to certain secure servers
  1668. (for which more secure Kerberos authentication is required). If
  1669. unsure, say N.
  1670. config CIFS_DFS_UPCALL
  1671. bool "DFS feature support (EXPERIMENTAL)"
  1672. depends on CIFS_EXPERIMENTAL
  1673. depends on KEYS
  1674. help
  1675. Enables an upcall mechanism for CIFS which contacts userspace
  1676. helper utilities to provide server name resolution (host names to
  1677. IP addresses) which is needed for implicit mounts of DFS junction
  1678. points. If unsure, say N.
  1679. config NCP_FS
  1680. tristate "NCP file system support (to mount NetWare volumes)"
  1681. depends on IPX!=n || INET
  1682. help
  1683. NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  1684. used by Novell NetWare clients to talk to file servers. It is to
  1685. IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
  1686. to mount NetWare file server volumes and to access them just like
  1687. any other Unix directory. For details, please read the file
  1688. <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
  1689. the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
  1690. You do not have to say Y here if you want your Linux box to act as a
  1691. file *server* for Novell NetWare clients.
  1692. General information about how to connect Linux, Windows machines and
  1693. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1694. To compile this as a module, choose M here: the module will be called
  1695. ncpfs. Say N unless you are connected to a Novell network.
  1696. source "fs/ncpfs/Kconfig"
  1697. config CODA_FS
  1698. tristate "Coda file system support (advanced network fs)"
  1699. depends on INET
  1700. help
  1701. Coda is an advanced network file system, similar to NFS in that it
  1702. enables you to mount file systems of a remote server and access them
  1703. with regular Unix commands as if they were sitting on your hard
  1704. disk. Coda has several advantages over NFS: support for
  1705. disconnected operation (e.g. for laptops), read/write server
  1706. replication, security model for authentication and encryption,
  1707. persistent client caches and write back caching.
  1708. If you say Y here, your Linux box will be able to act as a Coda
  1709. *client*. You will need user level code as well, both for the
  1710. client and server. Servers are currently user level, i.e. they need
  1711. no kernel support. Please read
  1712. <file:Documentation/filesystems/coda.txt> and check out the Coda
  1713. home page <http://www.coda.cs.cmu.edu/>.
  1714. To compile the coda client support as a module, choose M here: the
  1715. module will be called coda.
  1716. config CODA_FS_OLD_API
  1717. bool "Use 96-bit Coda file identifiers"
  1718. depends on CODA_FS
  1719. help
  1720. A new kernel-userspace API had to be introduced for Coda v6.0
  1721. to support larger 128-bit file identifiers as needed by the
  1722. new realms implementation.
  1723. However this new API is not backward compatible with older
  1724. clients. If you really need to run the old Coda userspace
  1725. cache manager then say Y.
  1726. For most cases you probably want to say N.
  1727. config AFS_FS
  1728. tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
  1729. depends on INET && EXPERIMENTAL
  1730. select AF_RXRPC
  1731. help
  1732. If you say Y here, you will get an experimental Andrew File System
  1733. driver. It currently only supports unsecured read-only AFS access.
  1734. See <file:Documentation/filesystems/afs.txt> for more information.
  1735. If unsure, say N.
  1736. config AFS_DEBUG
  1737. bool "AFS dynamic debugging"
  1738. depends on AFS_FS
  1739. help
  1740. Say Y here to make runtime controllable debugging messages appear.
  1741. See <file:Documentation/filesystems/afs.txt> for more information.
  1742. If unsure, say N.
  1743. config 9P_FS
  1744. tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
  1745. depends on INET && NET_9P && EXPERIMENTAL
  1746. help
  1747. If you say Y here, you will get experimental support for
  1748. Plan 9 resource sharing via the 9P2000 protocol.
  1749. See <http://v9fs.sf.net> for more information.
  1750. If unsure, say N.
  1751. endif # NETWORK_FILESYSTEMS
  1752. if BLOCK
  1753. menu "Partition Types"
  1754. source "fs/partitions/Kconfig"
  1755. endmenu
  1756. endif
  1757. source "fs/nls/Kconfig"
  1758. source "fs/dlm/Kconfig"
  1759. endmenu