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. help
  193. This is a generic journaling layer for block devices that support
  194. both 32-bit and 64-bit block numbers. It is currently used by
  195. the ext4dev/ext4 filesystem, but it could also be used to add
  196. journal support to other file systems or block devices such
  197. as RAID or LVM.
  198. If you are using ext4dev/ext4, you need to say Y here. If you are not
  199. using ext4dev/ext4 then you will probably want to say N.
  200. To compile this device as a module, choose M here. The module will be
  201. called jbd2. If you are compiling ext4dev/ext4 into the kernel,
  202. you cannot compile this code as a module.
  203. config JBD2_DEBUG
  204. bool "JBD2 (ext4dev/ext4) debugging support"
  205. depends on JBD2 && DEBUG_FS
  206. help
  207. If you are using the ext4dev/ext4 journaled file system (or
  208. potentially any other filesystem/device using JBD2), this option
  209. allows you to enable debugging output while the system is running,
  210. in order to help track down any problems you are having.
  211. By default, the debugging output will be turned off.
  212. If you select Y here, then you will be able to turn on debugging
  213. with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
  214. number between 1 and 5. The higher the number, the more debugging
  215. output is generated. To turn debugging off again, do
  216. "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
  217. config FS_MBCACHE
  218. # Meta block cache for Extended Attributes (ext2/ext3/ext4)
  219. tristate
  220. depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
  221. default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
  222. default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
  223. config REISERFS_FS
  224. tristate "Reiserfs support"
  225. help
  226. Stores not just filenames but the files themselves in a balanced
  227. tree. Uses journalling.
  228. Balanced trees are more efficient than traditional file system
  229. architectural foundations.
  230. In general, ReiserFS is as fast as ext2, but is very efficient with
  231. large directories and small files. Additional patches are needed
  232. for NFS and quotas, please see <http://www.namesys.com/> for links.
  233. It is more easily extended to have features currently found in
  234. database and keyword search systems than block allocation based file
  235. systems are. The next version will be so extended, and will support
  236. plugins consistent with our motto ``It takes more than a license to
  237. make source code open.''
  238. Read <http://www.namesys.com/> to learn more about reiserfs.
  239. Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
  240. If you like it, you can pay us to add new features to it that you
  241. need, buy a support contract, or pay us to port it to another OS.
  242. config REISERFS_CHECK
  243. bool "Enable reiserfs debug mode"
  244. depends on REISERFS_FS
  245. help
  246. If you set this to Y, then ReiserFS will perform every check it can
  247. possibly imagine of its internal consistency throughout its
  248. operation. It will also go substantially slower. More than once we
  249. have forgotten that this was on, and then gone despondent over the
  250. latest benchmarks.:-) Use of this option allows our team to go all
  251. out in checking for consistency when debugging without fear of its
  252. effect on end users. If you are on the verge of sending in a bug
  253. report, say Y and you might get a useful error message. Almost
  254. everyone should say N.
  255. config REISERFS_PROC_INFO
  256. bool "Stats in /proc/fs/reiserfs"
  257. depends on REISERFS_FS && PROC_FS
  258. help
  259. Create under /proc/fs/reiserfs a hierarchy of files, displaying
  260. various ReiserFS statistics and internal data at the expense of
  261. making your kernel or module slightly larger (+8 KB). This also
  262. increases the amount of kernel memory required for each mount.
  263. Almost everyone but ReiserFS developers and people fine-tuning
  264. reiserfs or tracing problems should say N.
  265. config REISERFS_FS_XATTR
  266. bool "ReiserFS extended attributes"
  267. depends on REISERFS_FS
  268. help
  269. Extended attributes are name:value pairs associated with inodes by
  270. the kernel or by users (see the attr(5) manual page, or visit
  271. <http://acl.bestbits.at/> for details).
  272. If unsure, say N.
  273. config REISERFS_FS_POSIX_ACL
  274. bool "ReiserFS POSIX Access Control Lists"
  275. depends on REISERFS_FS_XATTR
  276. select FS_POSIX_ACL
  277. help
  278. Posix Access Control Lists (ACLs) support permissions for users and
  279. groups beyond the owner/group/world scheme.
  280. To learn more about Access Control Lists, visit the Posix ACLs for
  281. Linux website <http://acl.bestbits.at/>.
  282. If you don't know what Access Control Lists are, say N
  283. config REISERFS_FS_SECURITY
  284. bool "ReiserFS Security Labels"
  285. depends on REISERFS_FS_XATTR
  286. help
  287. Security labels support alternative access control models
  288. implemented by security modules like SELinux. This option
  289. enables an extended attribute handler for file security
  290. labels in the ReiserFS filesystem.
  291. If you are not using a security module that requires using
  292. extended attributes for file security labels, say N.
  293. config JFS_FS
  294. tristate "JFS filesystem support"
  295. select NLS
  296. help
  297. This is a port of IBM's Journaled Filesystem . More information is
  298. available in the file <file:Documentation/filesystems/jfs.txt>.
  299. If you do not intend to use the JFS filesystem, say N.
  300. config JFS_POSIX_ACL
  301. bool "JFS POSIX Access Control Lists"
  302. depends on JFS_FS
  303. select FS_POSIX_ACL
  304. help
  305. Posix Access Control Lists (ACLs) support permissions for users and
  306. groups beyond the owner/group/world scheme.
  307. To learn more about Access Control Lists, visit the Posix ACLs for
  308. Linux website <http://acl.bestbits.at/>.
  309. If you don't know what Access Control Lists are, say N
  310. config JFS_SECURITY
  311. bool "JFS Security Labels"
  312. depends on JFS_FS
  313. help
  314. Security labels support alternative access control models
  315. implemented by security modules like SELinux. This option
  316. enables an extended attribute handler for file security
  317. labels in the jfs filesystem.
  318. If you are not using a security module that requires using
  319. extended attributes for file security labels, say N.
  320. config JFS_DEBUG
  321. bool "JFS debugging"
  322. depends on JFS_FS
  323. help
  324. If you are experiencing any problems with the JFS filesystem, say
  325. Y here. This will result in additional debugging messages to be
  326. written to the system log. Under normal circumstances, this
  327. results in very little overhead.
  328. config JFS_STATISTICS
  329. bool "JFS statistics"
  330. depends on JFS_FS
  331. help
  332. Enabling this option will cause statistics from the JFS file system
  333. to be made available to the user in the /proc/fs/jfs/ directory.
  334. config FS_POSIX_ACL
  335. # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
  336. #
  337. # NOTE: you can implement Posix ACLs without these helpers (XFS does).
  338. # Never use this symbol for ifdefs.
  339. #
  340. bool
  341. default n
  342. source "fs/xfs/Kconfig"
  343. source "fs/gfs2/Kconfig"
  344. config OCFS2_FS
  345. tristate "OCFS2 file system support"
  346. depends on NET && SYSFS
  347. select CONFIGFS_FS
  348. select JBD
  349. select CRC32
  350. help
  351. OCFS2 is a general purpose extent based shared disk cluster file
  352. system with many similarities to ext3. It supports 64 bit inode
  353. numbers, and has automatically extending metadata groups which may
  354. also make it attractive for non-clustered use.
  355. You'll want to install the ocfs2-tools package in order to at least
  356. get "mount.ocfs2".
  357. Project web page: http://oss.oracle.com/projects/ocfs2
  358. Tools web page: http://oss.oracle.com/projects/ocfs2-tools
  359. OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
  360. For more information on OCFS2, see the file
  361. <file:Documentation/filesystems/ocfs2.txt>.
  362. config OCFS2_DEBUG_MASKLOG
  363. bool "OCFS2 logging support"
  364. depends on OCFS2_FS
  365. default y
  366. help
  367. The ocfs2 filesystem has an extensive logging system. The system
  368. allows selection of events to log via files in /sys/o2cb/logmask/.
  369. This option will enlarge your kernel, but it allows debugging of
  370. ocfs2 filesystem issues.
  371. config OCFS2_DEBUG_FS
  372. bool "OCFS2 expensive checks"
  373. depends on OCFS2_FS
  374. default n
  375. help
  376. This option will enable expensive consistency checks. Enable
  377. this option for debugging only as it is likely to decrease
  378. performance of the filesystem.
  379. config MINIX_FS
  380. tristate "Minix fs support"
  381. help
  382. Minix is a simple operating system used in many classes about OS's.
  383. The minix file system (method to organize files on a hard disk
  384. partition or a floppy disk) was the original file system for Linux,
  385. but has been superseded by the second extended file system ext2fs.
  386. You don't want to use the minix file system on your hard disk
  387. because of certain built-in restrictions, but it is sometimes found
  388. on older Linux floppy disks. This option will enlarge your kernel
  389. by about 28 KB. If unsure, say N.
  390. To compile this file system support as a module, choose M here: the
  391. module will be called minix. Note that the file system of your root
  392. partition (the one containing the directory /) cannot be compiled as
  393. a module.
  394. config ROMFS_FS
  395. tristate "ROM file system support"
  396. ---help---
  397. This is a very small read-only file system mainly intended for
  398. initial ram disks of installation disks, but it could be used for
  399. other read-only media as well. Read
  400. <file:Documentation/filesystems/romfs.txt> for details.
  401. To compile this file system support as a module, choose M here: the
  402. module will be called romfs. Note that the file system of your
  403. root partition (the one containing the directory /) cannot be a
  404. module.
  405. If you don't know whether you need it, then you don't need it:
  406. answer N.
  407. endif
  408. config INOTIFY
  409. bool "Inotify file change notification support"
  410. default y
  411. ---help---
  412. Say Y here to enable inotify support. Inotify is a file change
  413. notification system and a replacement for dnotify. Inotify fixes
  414. numerous shortcomings in dnotify and introduces several new features
  415. including multiple file events, one-shot support, and unmount
  416. notification.
  417. For more information, see <file:Documentation/filesystems/inotify.txt>
  418. If unsure, say Y.
  419. config INOTIFY_USER
  420. bool "Inotify support for userspace"
  421. depends on INOTIFY
  422. default y
  423. ---help---
  424. Say Y here to enable inotify support for userspace, including the
  425. associated system calls. Inotify allows monitoring of both files and
  426. directories via a single open fd. Events are read from the file
  427. descriptor, which is also select()- and poll()-able.
  428. For more information, see <file:Documentation/filesystems/inotify.txt>
  429. If unsure, say Y.
  430. config QUOTA
  431. bool "Quota support"
  432. help
  433. If you say Y here, you will be able to set per user limits for disk
  434. usage (also called disk quotas). Currently, it works for the
  435. ext2, ext3, and reiserfs file system. ext3 also supports journalled
  436. quotas for which you don't need to run quotacheck(8) after an unclean
  437. shutdown.
  438. For further details, read the Quota mini-HOWTO, available from
  439. <http://www.tldp.org/docs.html#howto>, or the documentation provided
  440. with the quota tools. Probably the quota support is only useful for
  441. multi user systems. If unsure, say N.
  442. config QUOTA_NETLINK_INTERFACE
  443. bool "Report quota messages through netlink interface"
  444. depends on QUOTA && NET
  445. help
  446. If you say Y here, quota warnings (about exceeding softlimit, reaching
  447. hardlimit, etc.) will be reported through netlink interface. If unsure,
  448. say Y.
  449. config PRINT_QUOTA_WARNING
  450. bool "Print quota warnings to console (OBSOLETE)"
  451. depends on QUOTA
  452. default y
  453. help
  454. If you say Y here, quota warnings (about exceeding softlimit, reaching
  455. hardlimit, etc.) will be printed to the process' controlling terminal.
  456. Note that this behavior is currently deprecated and may go away in
  457. future. Please use notification via netlink socket instead.
  458. config QFMT_V1
  459. tristate "Old quota format support"
  460. depends on QUOTA
  461. help
  462. This quota format was (is) used by kernels earlier than 2.4.22. If
  463. you have quota working and you don't want to convert to new quota
  464. format say Y here.
  465. config QFMT_V2
  466. tristate "Quota format v2 support"
  467. depends on QUOTA
  468. help
  469. This quota format allows using quotas with 32-bit UIDs/GIDs. If you
  470. need this functionality say Y here.
  471. config QUOTACTL
  472. bool
  473. depends on XFS_QUOTA || QUOTA
  474. default y
  475. config DNOTIFY
  476. bool "Dnotify support"
  477. default y
  478. help
  479. Dnotify is a directory-based per-fd file change notification system
  480. that uses signals to communicate events to user-space. There exist
  481. superior alternatives, but some applications may still rely on
  482. dnotify.
  483. If unsure, say Y.
  484. config AUTOFS_FS
  485. tristate "Kernel automounter support"
  486. help
  487. The automounter is a tool to automatically mount remote file systems
  488. on demand. This implementation is partially kernel-based to reduce
  489. overhead in the already-mounted case; this is unlike the BSD
  490. automounter (amd), which is a pure user space daemon.
  491. To use the automounter you need the user-space tools from the autofs
  492. package; you can find the location in <file:Documentation/Changes>.
  493. You also want to answer Y to "NFS file system support", below.
  494. If you want to use the newer version of the automounter with more
  495. features, say N here and say Y to "Kernel automounter v4 support",
  496. below.
  497. To compile this support as a module, choose M here: the module will be
  498. called autofs.
  499. If you are not a part of a fairly large, distributed network, you
  500. probably do not need an automounter, and can say N here.
  501. config AUTOFS4_FS
  502. tristate "Kernel automounter version 4 support (also supports v3)"
  503. help
  504. The automounter is a tool to automatically mount remote file systems
  505. on demand. This implementation is partially kernel-based to reduce
  506. overhead in the already-mounted case; this is unlike the BSD
  507. automounter (amd), which is a pure user space daemon.
  508. To use the automounter you need the user-space tools from
  509. <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
  510. want to answer Y to "NFS file system support", below.
  511. To compile this support as a module, choose M here: the module will be
  512. called autofs4. You will need to add "alias autofs autofs4" to your
  513. modules configuration file.
  514. If you are not a part of a fairly large, distributed network or
  515. don't have a laptop which needs to dynamically reconfigure to the
  516. local network, you probably do not need an automounter, and can say
  517. N here.
  518. config FUSE_FS
  519. tristate "Filesystem in Userspace support"
  520. help
  521. With FUSE it is possible to implement a fully functional filesystem
  522. in a userspace program.
  523. There's also companion library: libfuse. This library along with
  524. utilities is available from the FUSE homepage:
  525. <http://fuse.sourceforge.net/>
  526. See <file:Documentation/filesystems/fuse.txt> for more information.
  527. See <file:Documentation/Changes> for needed library/utility version.
  528. If you want to develop a userspace FS, or if you want to use
  529. a filesystem based on FUSE, answer Y or M.
  530. config GENERIC_ACL
  531. bool
  532. select FS_POSIX_ACL
  533. if BLOCK
  534. menu "CD-ROM/DVD Filesystems"
  535. config ISO9660_FS
  536. tristate "ISO 9660 CDROM file system support"
  537. help
  538. This is the standard file system used on CD-ROMs. It was previously
  539. known as "High Sierra File System" and is called "hsfs" on other
  540. Unix systems. The so-called Rock-Ridge extensions which allow for
  541. long Unix filenames and symbolic links are also supported by this
  542. driver. If you have a CD-ROM drive and want to do more with it than
  543. just listen to audio CDs and watch its LEDs, say Y (and read
  544. <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
  545. available from <http://www.tldp.org/docs.html#howto>), thereby
  546. enlarging your kernel by about 27 KB; otherwise say N.
  547. To compile this file system support as a module, choose M here: the
  548. module will be called isofs.
  549. config JOLIET
  550. bool "Microsoft Joliet CDROM extensions"
  551. depends on ISO9660_FS
  552. select NLS
  553. help
  554. Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
  555. which allows for long filenames in unicode format (unicode is the
  556. new 16 bit character code, successor to ASCII, which encodes the
  557. characters of almost all languages of the world; see
  558. <http://www.unicode.org/> for more information). Say Y here if you
  559. want to be able to read Joliet CD-ROMs under Linux.
  560. config ZISOFS
  561. bool "Transparent decompression extension"
  562. depends on ISO9660_FS
  563. select ZLIB_INFLATE
  564. help
  565. This is a Linux-specific extension to RockRidge which lets you store
  566. data in compressed form on a CD-ROM and have it transparently
  567. decompressed when the CD-ROM is accessed. See
  568. <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
  569. necessary to create such a filesystem. Say Y here if you want to be
  570. able to read such compressed CD-ROMs.
  571. config UDF_FS
  572. tristate "UDF file system support"
  573. help
  574. This is the new file system used on some CD-ROMs and DVDs. Say Y if
  575. you intend to mount DVD discs or CDRW's written in packet mode, or
  576. if written to by other UDF utilities, such as DirectCD.
  577. Please read <file:Documentation/filesystems/udf.txt>.
  578. To compile this file system support as a module, choose M here: the
  579. module will be called udf.
  580. If unsure, say N.
  581. config UDF_NLS
  582. bool
  583. default y
  584. depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
  585. endmenu
  586. endif
  587. if BLOCK
  588. menu "DOS/FAT/NT Filesystems"
  589. config FAT_FS
  590. tristate
  591. select NLS
  592. help
  593. If you want to use one of the FAT-based file systems (the MS-DOS and
  594. VFAT (Windows 95) file systems), then you must say Y or M here
  595. to include FAT support. You will then be able to mount partitions or
  596. diskettes with FAT-based file systems and transparently access the
  597. files on them, i.e. MSDOS files will look and behave just like all
  598. other Unix files.
  599. This FAT support is not a file system in itself, it only provides
  600. the foundation for the other file systems. You will have to say Y or
  601. M to at least one of "MSDOS fs support" or "VFAT fs support" in
  602. order to make use of it.
  603. Another way to read and write MSDOS floppies and hard drive
  604. partitions from within Linux (but not transparently) is with the
  605. mtools ("man mtools") program suite. You don't need to say Y here in
  606. order to do that.
  607. If you need to move large files on floppies between a DOS and a
  608. Linux box, say Y here, mount the floppy under Linux with an MSDOS
  609. file system and use GNU tar's M option. GNU tar is a program
  610. available for Unix and DOS ("man tar" or "info tar").
  611. The FAT support will enlarge your kernel by about 37 KB. If unsure,
  612. say Y.
  613. To compile this as a module, choose M here: the module will be called
  614. fat. Note that if you compile the FAT support as a module, you
  615. cannot compile any of the FAT-based file systems into the kernel
  616. -- they will have to be modules as well.
  617. config MSDOS_FS
  618. tristate "MSDOS fs support"
  619. select FAT_FS
  620. help
  621. This allows you to mount MSDOS partitions of your hard drive (unless
  622. they are compressed; to access compressed MSDOS partitions under
  623. Linux, you can either use the DOS emulator DOSEMU, described in the
  624. DOSEMU-HOWTO, available from
  625. <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
  626. <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
  627. intend to use dosemu with a non-compressed MSDOS partition, say Y
  628. here) and MSDOS floppies. This means that file access becomes
  629. transparent, i.e. the MSDOS files look and behave just like all
  630. other Unix files.
  631. If you have Windows 95 or Windows NT installed on your MSDOS
  632. partitions, you should use the VFAT file system (say Y to "VFAT fs
  633. support" below), or you will not be able to see the long filenames
  634. generated by Windows 95 / Windows NT.
  635. This option will enlarge your kernel by about 7 KB. If unsure,
  636. answer Y. This will only work if you said Y to "DOS FAT fs support"
  637. as well. To compile this as a module, choose M here: the module will
  638. be called msdos.
  639. config VFAT_FS
  640. tristate "VFAT (Windows-95) fs support"
  641. select FAT_FS
  642. help
  643. This option provides support for normal Windows file systems with
  644. long filenames. That includes non-compressed FAT-based file systems
  645. used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
  646. programs from the mtools package.
  647. The VFAT support enlarges your kernel by about 10 KB and it only
  648. works if you said Y to the "DOS FAT fs support" above. Please read
  649. the file <file:Documentation/filesystems/vfat.txt> for details. If
  650. unsure, say Y.
  651. To compile this as a module, choose M here: the module will be called
  652. vfat.
  653. config FAT_DEFAULT_CODEPAGE
  654. int "Default codepage for FAT"
  655. depends on MSDOS_FS || VFAT_FS
  656. default 437
  657. help
  658. This option should be set to the codepage of your FAT filesystems.
  659. It can be overridden with the "codepage" mount option.
  660. See <file:Documentation/filesystems/vfat.txt> for more information.
  661. config FAT_DEFAULT_IOCHARSET
  662. string "Default iocharset for FAT"
  663. depends on VFAT_FS
  664. default "iso8859-1"
  665. help
  666. Set this to the default input/output character set you'd
  667. like FAT to use. It should probably match the character set
  668. that most of your FAT filesystems use, and can be overridden
  669. with the "iocharset" mount option for FAT filesystems.
  670. Note that "utf8" is not recommended for FAT filesystems.
  671. If unsure, you shouldn't set "utf8" here.
  672. See <file:Documentation/filesystems/vfat.txt> for more information.
  673. config NTFS_FS
  674. tristate "NTFS file system support"
  675. select NLS
  676. help
  677. NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
  678. Saying Y or M here enables read support. There is partial, but
  679. safe, write support available. For write support you must also
  680. say Y to "NTFS write support" below.
  681. There are also a number of user-space tools available, called
  682. ntfsprogs. These include ntfsundelete and ntfsresize, that work
  683. without NTFS support enabled in the kernel.
  684. This is a rewrite from scratch of Linux NTFS support and replaced
  685. the old NTFS code starting with Linux 2.5.11. A backport to
  686. the Linux 2.4 kernel series is separately available as a patch
  687. from the project web site.
  688. For more information see <file:Documentation/filesystems/ntfs.txt>
  689. and <http://linux-ntfs.sourceforge.net/>.
  690. To compile this file system support as a module, choose M here: the
  691. module will be called ntfs.
  692. If you are not using Windows NT, 2000, XP or 2003 in addition to
  693. Linux on your computer it is safe to say N.
  694. config NTFS_DEBUG
  695. bool "NTFS debugging support"
  696. depends on NTFS_FS
  697. help
  698. If you are experiencing any problems with the NTFS file system, say
  699. Y here. This will result in additional consistency checks to be
  700. performed by the driver as well as additional debugging messages to
  701. be written to the system log. Note that debugging messages are
  702. disabled by default. To enable them, supply the option debug_msgs=1
  703. at the kernel command line when booting the kernel or as an option
  704. to insmod when loading the ntfs module. Once the driver is active,
  705. you can enable debugging messages by doing (as root):
  706. echo 1 > /proc/sys/fs/ntfs-debug
  707. Replacing the "1" with "0" would disable debug messages.
  708. If you leave debugging messages disabled, this results in little
  709. overhead, but enabling debug messages results in very significant
  710. slowdown of the system.
  711. When reporting bugs, please try to have available a full dump of
  712. debugging messages while the misbehaviour was occurring.
  713. config NTFS_RW
  714. bool "NTFS write support"
  715. depends on NTFS_FS
  716. help
  717. This enables the partial, but safe, write support in the NTFS driver.
  718. The only supported operation is overwriting existing files, without
  719. changing the file length. No file or directory creation, deletion or
  720. renaming is possible. Note only non-resident files can be written to
  721. so you may find that some very small files (<500 bytes or so) cannot
  722. be written to.
  723. While we cannot guarantee that it will not damage any data, we have
  724. so far not received a single report where the driver would have
  725. damaged someones data so we assume it is perfectly safe to use.
  726. Note: While write support is safe in this version (a rewrite from
  727. scratch of the NTFS support), it should be noted that the old NTFS
  728. write support, included in Linux 2.5.10 and before (since 1997),
  729. is not safe.
  730. This is currently useful with TopologiLinux. TopologiLinux is run
  731. on top of any DOS/Microsoft Windows system without partitioning your
  732. hard disk. Unlike other Linux distributions TopologiLinux does not
  733. need its own partition. For more information see
  734. <http://topologi-linux.sourceforge.net/>
  735. It is perfectly safe to say N here.
  736. endmenu
  737. endif
  738. menu "Pseudo filesystems"
  739. config PROC_FS
  740. bool "/proc file system support" if EMBEDDED
  741. default y
  742. help
  743. This is a virtual file system providing information about the status
  744. of the system. "Virtual" means that it doesn't take up any space on
  745. your hard disk: the files are created on the fly by the kernel when
  746. you try to access them. Also, you cannot read the files with older
  747. version of the program less: you need to use more or cat.
  748. It's totally cool; for example, "cat /proc/interrupts" gives
  749. information about what the different IRQs are used for at the moment
  750. (there is a small number of Interrupt ReQuest lines in your computer
  751. that are used by the attached devices to gain the CPU's attention --
  752. often a source of trouble if two devices are mistakenly configured
  753. to use the same IRQ). The program procinfo to display some
  754. information about your system gathered from the /proc file system.
  755. Before you can use the /proc file system, it has to be mounted,
  756. meaning it has to be given a location in the directory hierarchy.
  757. That location should be /proc. A command such as "mount -t proc proc
  758. /proc" or the equivalent line in /etc/fstab does the job.
  759. The /proc file system is explained in the file
  760. <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
  761. ("man 5 proc").
  762. This option will enlarge your kernel by about 67 KB. Several
  763. programs depend on this, so everyone should say Y here.
  764. config PROC_KCORE
  765. bool "/proc/kcore support" if !ARM
  766. depends on PROC_FS && MMU
  767. config PROC_VMCORE
  768. bool "/proc/vmcore support (EXPERIMENTAL)"
  769. depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
  770. default y
  771. help
  772. Exports the dump image of crashed kernel in ELF format.
  773. config PROC_SYSCTL
  774. bool "Sysctl support (/proc/sys)" if EMBEDDED
  775. depends on PROC_FS
  776. select SYSCTL
  777. default y
  778. ---help---
  779. The sysctl interface provides a means of dynamically changing
  780. certain kernel parameters and variables on the fly without requiring
  781. a recompile of the kernel or reboot of the system. The primary
  782. interface is through /proc/sys. If you say Y here a tree of
  783. modifiable sysctl entries will be generated beneath the
  784. /proc/sys directory. They are explained in the files
  785. in <file:Documentation/sysctl/>. Note that enabling this
  786. option will enlarge the kernel by at least 8 KB.
  787. As it is generally a good thing, you should say Y here unless
  788. building a kernel for install/rescue disks or your system is very
  789. limited in memory.
  790. config SYSFS
  791. bool "sysfs file system support" if EMBEDDED
  792. default y
  793. help
  794. The sysfs filesystem is a virtual filesystem that the kernel uses to
  795. export internal kernel objects, their attributes, and their
  796. relationships to one another.
  797. Users can use sysfs to ascertain useful information about the running
  798. kernel, such as the devices the kernel has discovered on each bus and
  799. which driver each is bound to. sysfs can also be used to tune devices
  800. and other kernel subsystems.
  801. Some system agents rely on the information in sysfs to operate.
  802. /sbin/hotplug uses device and object attributes in sysfs to assist in
  803. delegating policy decisions, like persistently naming devices.
  804. sysfs is currently used by the block subsystem to mount the root
  805. partition. If sysfs is disabled you must specify the boot device on
  806. the kernel boot command line via its major and minor numbers. For
  807. example, "root=03:01" for /dev/hda1.
  808. Designers of embedded systems may wish to say N here to conserve space.
  809. config TMPFS
  810. bool "Virtual memory file system support (former shm fs)"
  811. help
  812. Tmpfs is a file system which keeps all files in virtual memory.
  813. Everything in tmpfs is temporary in the sense that no files will be
  814. created on your hard drive. The files live in memory and swap
  815. space. If you unmount a tmpfs instance, everything stored therein is
  816. lost.
  817. See <file:Documentation/filesystems/tmpfs.txt> for details.
  818. config TMPFS_POSIX_ACL
  819. bool "Tmpfs POSIX Access Control Lists"
  820. depends on TMPFS
  821. select GENERIC_ACL
  822. help
  823. POSIX Access Control Lists (ACLs) support permissions for users and
  824. groups beyond the owner/group/world scheme.
  825. To learn more about Access Control Lists, visit the POSIX ACLs for
  826. Linux website <http://acl.bestbits.at/>.
  827. If you don't know what Access Control Lists are, say N.
  828. config HUGETLBFS
  829. bool "HugeTLB file system support"
  830. depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
  831. help
  832. hugetlbfs is a filesystem backing for HugeTLB pages, based on
  833. ramfs. For architectures that support it, say Y here and read
  834. <file:Documentation/vm/hugetlbpage.txt> for details.
  835. If unsure, say N.
  836. config HUGETLB_PAGE
  837. def_bool HUGETLBFS
  838. config CONFIGFS_FS
  839. tristate "Userspace-driven configuration filesystem"
  840. depends on SYSFS
  841. help
  842. configfs is a ram-based filesystem that provides the converse
  843. of sysfs's functionality. Where sysfs is a filesystem-based
  844. view of kernel objects, configfs is a filesystem-based manager
  845. of kernel objects, or config_items.
  846. Both sysfs and configfs can and should exist together on the
  847. same system. One is not a replacement for the other.
  848. endmenu
  849. menu "Miscellaneous filesystems"
  850. config ADFS_FS
  851. tristate "ADFS file system support (EXPERIMENTAL)"
  852. depends on BLOCK && EXPERIMENTAL
  853. help
  854. The Acorn Disc Filing System is the standard file system of the
  855. RiscOS operating system which runs on Acorn's ARM-based Risc PC
  856. systems and the Acorn Archimedes range of machines. If you say Y
  857. here, Linux will be able to read from ADFS partitions on hard drives
  858. and from ADFS-formatted floppy discs. If you also want to be able to
  859. write to those devices, say Y to "ADFS write support" below.
  860. The ADFS partition should be the first partition (i.e.,
  861. /dev/[hs]d?1) on each of your drives. Please read the file
  862. <file:Documentation/filesystems/adfs.txt> for further details.
  863. To compile this code as a module, choose M here: the module will be
  864. called adfs.
  865. If unsure, say N.
  866. config ADFS_FS_RW
  867. bool "ADFS write support (DANGEROUS)"
  868. depends on ADFS_FS
  869. help
  870. If you say Y here, you will be able to write to ADFS partitions on
  871. hard drives and ADFS-formatted floppy disks. This is experimental
  872. codes, so if you're unsure, say N.
  873. config AFFS_FS
  874. tristate "Amiga FFS file system support (EXPERIMENTAL)"
  875. depends on BLOCK && EXPERIMENTAL
  876. help
  877. The Fast File System (FFS) is the common file system used on hard
  878. disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
  879. if you want to be able to read and write files from and to an Amiga
  880. FFS partition on your hard drive. Amiga floppies however cannot be
  881. read with this driver due to an incompatibility of the floppy
  882. controller used in an Amiga and the standard floppy controller in
  883. PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
  884. and <file:fs/affs/Changes>.
  885. With this driver you can also mount disk files used by Bernd
  886. Schmidt's Un*X Amiga Emulator
  887. (<http://www.freiburg.linux.de/~uae/>).
  888. If you want to do this, you will also need to say Y or M to "Loop
  889. device support", above.
  890. To compile this file system support as a module, choose M here: the
  891. module will be called affs. If unsure, say N.
  892. config ECRYPT_FS
  893. tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
  894. depends on EXPERIMENTAL && KEYS && CRYPTO && NET
  895. help
  896. Encrypted filesystem that operates on the VFS layer. See
  897. <file:Documentation/filesystems/ecryptfs.txt> to learn more about
  898. eCryptfs. Userspace components are required and can be
  899. obtained from <http://ecryptfs.sf.net>.
  900. To compile this file system support as a module, choose M here: the
  901. module will be called ecryptfs.
  902. config HFS_FS
  903. tristate "Apple Macintosh file system support (EXPERIMENTAL)"
  904. depends on BLOCK && EXPERIMENTAL
  905. select NLS
  906. help
  907. If you say Y here, you will be able to mount Macintosh-formatted
  908. floppy disks and hard drive partitions with full read-write access.
  909. Please read <file:Documentation/filesystems/hfs.txt> to learn about
  910. the available mount options.
  911. To compile this file system support as a module, choose M here: the
  912. module will be called hfs.
  913. config HFSPLUS_FS
  914. tristate "Apple Extended HFS file system support"
  915. depends on BLOCK
  916. select NLS
  917. select NLS_UTF8
  918. help
  919. If you say Y here, you will be able to mount extended format
  920. Macintosh-formatted hard drive partitions with full read-write access.
  921. This file system is often called HFS+ and was introduced with
  922. MacOS 8. It includes all Mac specific filesystem data such as
  923. data forks and creator codes, but it also has several UNIX
  924. style features such as file ownership and permissions.
  925. config BEFS_FS
  926. tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
  927. depends on BLOCK && EXPERIMENTAL
  928. select NLS
  929. help
  930. The BeOS File System (BeFS) is the native file system of Be, Inc's
  931. BeOS. Notable features include support for arbitrary attributes
  932. on files and directories, and database-like indices on selected
  933. attributes. (Also note that this driver doesn't make those features
  934. available at this time). It is a 64 bit filesystem, so it supports
  935. extremely large volumes and files.
  936. If you use this filesystem, you should also say Y to at least one
  937. of the NLS (native language support) options below.
  938. If you don't know what this is about, say N.
  939. To compile this as a module, choose M here: the module will be
  940. called befs.
  941. config BEFS_DEBUG
  942. bool "Debug BeFS"
  943. depends on BEFS_FS
  944. help
  945. If you say Y here, you can use the 'debug' mount option to enable
  946. debugging output from the driver.
  947. config BFS_FS
  948. tristate "BFS file system support (EXPERIMENTAL)"
  949. depends on BLOCK && EXPERIMENTAL
  950. help
  951. Boot File System (BFS) is a file system used under SCO UnixWare to
  952. allow the bootloader access to the kernel image and other important
  953. files during the boot process. It is usually mounted under /stand
  954. and corresponds to the slice marked as "STAND" in the UnixWare
  955. partition. You should say Y if you want to read or write the files
  956. on your /stand slice from within Linux. You then also need to say Y
  957. to "UnixWare slices support", below. More information about the BFS
  958. file system is contained in the file
  959. <file:Documentation/filesystems/bfs.txt>.
  960. If you don't know what this is about, say N.
  961. To compile this as a module, choose M here: the module will be called
  962. bfs. Note that the file system of your root partition (the one
  963. containing the directory /) cannot be compiled as a module.
  964. config EFS_FS
  965. tristate "EFS file system support (read only) (EXPERIMENTAL)"
  966. depends on BLOCK && EXPERIMENTAL
  967. help
  968. EFS is an older file system used for non-ISO9660 CD-ROMs and hard
  969. disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
  970. uses the XFS file system for hard disk partitions however).
  971. This implementation only offers read-only access. If you don't know
  972. what all this is about, it's safe to say N. For more information
  973. about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
  974. To compile the EFS file system support as a module, choose M here: the
  975. module will be called efs.
  976. config JFFS2_FS
  977. tristate "Journalling Flash File System v2 (JFFS2) support"
  978. select CRC32
  979. depends on MTD
  980. help
  981. JFFS2 is the second generation of the Journalling Flash File System
  982. for use on diskless embedded devices. It provides improved wear
  983. levelling, compression and support for hard links. You cannot use
  984. this on normal block devices, only on 'MTD' devices.
  985. Further information on the design and implementation of JFFS2 is
  986. available at <http://sources.redhat.com/jffs2/>.
  987. config JFFS2_FS_DEBUG
  988. int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
  989. depends on JFFS2_FS
  990. default "0"
  991. help
  992. This controls the amount of debugging messages produced by the JFFS2
  993. code. Set it to zero for use in production systems. For evaluation,
  994. testing and debugging, it's advisable to set it to one. This will
  995. enable a few assertions and will print debugging messages at the
  996. KERN_DEBUG loglevel, where they won't normally be visible. Level 2
  997. is unlikely to be useful - it enables extra debugging in certain
  998. areas which at one point needed debugging, but when the bugs were
  999. located and fixed, the detailed messages were relegated to level 2.
  1000. If reporting bugs, please try to have available a full dump of the
  1001. messages at debug level 1 while the misbehaviour was occurring.
  1002. config JFFS2_FS_WRITEBUFFER
  1003. bool "JFFS2 write-buffering support"
  1004. depends on JFFS2_FS
  1005. default y
  1006. help
  1007. This enables the write-buffering support in JFFS2.
  1008. This functionality is required to support JFFS2 on the following
  1009. types of flash devices:
  1010. - NAND flash
  1011. - NOR flash with transparent ECC
  1012. - DataFlash
  1013. config JFFS2_FS_WBUF_VERIFY
  1014. bool "Verify JFFS2 write-buffer reads"
  1015. depends on JFFS2_FS_WRITEBUFFER
  1016. default n
  1017. help
  1018. This causes JFFS2 to read back every page written through the
  1019. write-buffer, and check for errors.
  1020. config JFFS2_SUMMARY
  1021. bool "JFFS2 summary support (EXPERIMENTAL)"
  1022. depends on JFFS2_FS && EXPERIMENTAL
  1023. default n
  1024. help
  1025. This feature makes it possible to use summary information
  1026. for faster filesystem mount.
  1027. The summary information can be inserted into a filesystem image
  1028. by the utility 'sumtool'.
  1029. If unsure, say 'N'.
  1030. config JFFS2_FS_XATTR
  1031. bool "JFFS2 XATTR support (EXPERIMENTAL)"
  1032. depends on JFFS2_FS && EXPERIMENTAL
  1033. default n
  1034. help
  1035. Extended attributes are name:value pairs associated with inodes by
  1036. the kernel or by users (see the attr(5) manual page, or visit
  1037. <http://acl.bestbits.at/> for details).
  1038. If unsure, say N.
  1039. config JFFS2_FS_POSIX_ACL
  1040. bool "JFFS2 POSIX Access Control Lists"
  1041. depends on JFFS2_FS_XATTR
  1042. default y
  1043. select FS_POSIX_ACL
  1044. help
  1045. Posix Access Control Lists (ACLs) support permissions for users and
  1046. groups beyond the owner/group/world scheme.
  1047. To learn more about Access Control Lists, visit the Posix ACLs for
  1048. Linux website <http://acl.bestbits.at/>.
  1049. If you don't know what Access Control Lists are, say N
  1050. config JFFS2_FS_SECURITY
  1051. bool "JFFS2 Security Labels"
  1052. depends on JFFS2_FS_XATTR
  1053. default y
  1054. help
  1055. Security labels support alternative access control models
  1056. implemented by security modules like SELinux. This option
  1057. enables an extended attribute handler for file security
  1058. labels in the jffs2 filesystem.
  1059. If you are not using a security module that requires using
  1060. extended attributes for file security labels, say N.
  1061. config JFFS2_COMPRESSION_OPTIONS
  1062. bool "Advanced compression options for JFFS2"
  1063. depends on JFFS2_FS
  1064. default n
  1065. help
  1066. Enabling this option allows you to explicitly choose which
  1067. compression modules, if any, are enabled in JFFS2. Removing
  1068. compressors can mean you cannot read existing file systems,
  1069. and enabling experimental compressors can mean that you
  1070. write a file system which cannot be read by a standard kernel.
  1071. If unsure, you should _definitely_ say 'N'.
  1072. config JFFS2_ZLIB
  1073. bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
  1074. select ZLIB_INFLATE
  1075. select ZLIB_DEFLATE
  1076. depends on JFFS2_FS
  1077. default y
  1078. help
  1079. Zlib is designed to be a free, general-purpose, legally unencumbered,
  1080. lossless data-compression library for use on virtually any computer
  1081. hardware and operating system. See <http://www.gzip.org/zlib/> for
  1082. further information.
  1083. Say 'Y' if unsure.
  1084. config JFFS2_LZO
  1085. bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
  1086. select LZO_COMPRESS
  1087. select LZO_DECOMPRESS
  1088. depends on JFFS2_FS
  1089. default n
  1090. help
  1091. minilzo-based compression. Generally works better than Zlib.
  1092. This feature was added in July, 2007. Say 'N' if you need
  1093. compatibility with older bootloaders or kernels.
  1094. config JFFS2_RTIME
  1095. bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
  1096. depends on JFFS2_FS
  1097. default y
  1098. help
  1099. Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
  1100. config JFFS2_RUBIN
  1101. bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
  1102. depends on JFFS2_FS
  1103. default n
  1104. help
  1105. RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
  1106. choice
  1107. prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
  1108. default JFFS2_CMODE_PRIORITY
  1109. depends on JFFS2_FS
  1110. help
  1111. You can set here the default compression mode of JFFS2 from
  1112. the available compression modes. Don't touch if unsure.
  1113. config JFFS2_CMODE_NONE
  1114. bool "no compression"
  1115. help
  1116. Uses no compression.
  1117. config JFFS2_CMODE_PRIORITY
  1118. bool "priority"
  1119. help
  1120. Tries the compressors in a predefined order and chooses the first
  1121. successful one.
  1122. config JFFS2_CMODE_SIZE
  1123. bool "size (EXPERIMENTAL)"
  1124. help
  1125. Tries all compressors and chooses the one which has the smallest
  1126. result.
  1127. config JFFS2_CMODE_FAVOURLZO
  1128. bool "Favour LZO"
  1129. help
  1130. Tries all compressors and chooses the one which has the smallest
  1131. result but gives some preference to LZO (which has faster
  1132. decompression) at the expense of size.
  1133. endchoice
  1134. config CRAMFS
  1135. tristate "Compressed ROM file system support (cramfs)"
  1136. depends on BLOCK
  1137. select ZLIB_INFLATE
  1138. help
  1139. Saying Y here includes support for CramFs (Compressed ROM File
  1140. System). CramFs is designed to be a simple, small, and compressed
  1141. file system for ROM based embedded systems. CramFs is read-only,
  1142. limited to 256MB file systems (with 16MB files), and doesn't support
  1143. 16/32 bits uid/gid, hard links and timestamps.
  1144. See <file:Documentation/filesystems/cramfs.txt> and
  1145. <file:fs/cramfs/README> for further information.
  1146. To compile this as a module, choose M here: the module will be called
  1147. cramfs. Note that the root file system (the one containing the
  1148. directory /) cannot be compiled as a module.
  1149. If unsure, say N.
  1150. config VXFS_FS
  1151. tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
  1152. depends on BLOCK
  1153. help
  1154. FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
  1155. file system format. VERITAS VxFS(TM) is the standard file system
  1156. of SCO UnixWare (and possibly others) and optionally available
  1157. for Sunsoft Solaris, HP-UX and many other operating systems.
  1158. Currently only readonly access is supported.
  1159. NOTE: the file system type as used by mount(1), mount(2) and
  1160. fstab(5) is 'vxfs' as it describes the file system format, not
  1161. the actual driver.
  1162. To compile this as a module, choose M here: the module will be
  1163. called freevxfs. If unsure, say N.
  1164. config HPFS_FS
  1165. tristate "OS/2 HPFS file system support"
  1166. depends on BLOCK
  1167. help
  1168. OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
  1169. is the file system used for organizing files on OS/2 hard disk
  1170. partitions. Say Y if you want to be able to read files from and
  1171. write files to an OS/2 HPFS partition on your hard drive. OS/2
  1172. floppies however are in regular MSDOS format, so you don't need this
  1173. option in order to be able to read them. Read
  1174. <file:Documentation/filesystems/hpfs.txt>.
  1175. To compile this file system support as a module, choose M here: the
  1176. module will be called hpfs. If unsure, say N.
  1177. config QNX4FS_FS
  1178. tristate "QNX4 file system support (read only)"
  1179. depends on BLOCK
  1180. help
  1181. This is the file system used by the real-time operating systems
  1182. QNX 4 and QNX 6 (the latter is also called QNX RTP).
  1183. Further information is available at <http://www.qnx.com/>.
  1184. Say Y if you intend to mount QNX hard disks or floppies.
  1185. Unless you say Y to "QNX4FS read-write support" below, you will
  1186. only be able to read these file systems.
  1187. To compile this file system support as a module, choose M here: the
  1188. module will be called qnx4.
  1189. If you don't know whether you need it, then you don't need it:
  1190. answer N.
  1191. config QNX4FS_RW
  1192. bool "QNX4FS write support (DANGEROUS)"
  1193. depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
  1194. help
  1195. Say Y if you want to test write support for QNX4 file systems.
  1196. It's currently broken, so for now:
  1197. answer N.
  1198. config SYSV_FS
  1199. tristate "System V/Xenix/V7/Coherent file system support"
  1200. depends on BLOCK
  1201. help
  1202. SCO, Xenix and Coherent are commercial Unix systems for Intel
  1203. machines, and Version 7 was used on the DEC PDP-11. Saying Y
  1204. here would allow you to read from their floppies and hard disk
  1205. partitions.
  1206. If you have floppies or hard disk partitions like that, it is likely
  1207. that they contain binaries from those other Unix systems; in order
  1208. to run these binaries, you will want to install linux-abi which is
  1209. a set of kernel modules that lets you run SCO, Xenix, Wyse,
  1210. UnixWare, Dell Unix and System V programs under Linux. It is
  1211. available via FTP (user: ftp) from
  1212. <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
  1213. NOTE: that will work only for binaries from Intel-based systems;
  1214. PDP ones will have to wait until somebody ports Linux to -11 ;-)
  1215. If you only intend to mount files from some other Unix over the
  1216. network using NFS, you don't need the System V file system support
  1217. (but you need NFS file system support obviously).
  1218. Note that this option is generally not needed for floppies, since a
  1219. good portable way to transport files and directories between unixes
  1220. (and even other operating systems) is given by the tar program ("man
  1221. tar" or preferably "info tar"). Note also that this option has
  1222. nothing whatsoever to do with the option "System V IPC". Read about
  1223. the System V file system in
  1224. <file:Documentation/filesystems/sysv-fs.txt>.
  1225. Saying Y here will enlarge your kernel by about 27 KB.
  1226. To compile this as a module, choose M here: the module will be called
  1227. sysv.
  1228. If you haven't heard about all of this before, it's safe to say N.
  1229. config UFS_FS
  1230. tristate "UFS file system support (read only)"
  1231. depends on BLOCK
  1232. help
  1233. BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
  1234. OpenBSD and NeXTstep) use a file system called UFS. Some System V
  1235. Unixes can create and mount hard disk partitions and diskettes using
  1236. this file system as well. Saying Y here will allow you to read from
  1237. these partitions; if you also want to write to them, say Y to the
  1238. experimental "UFS file system write support", below. Please read the
  1239. file <file:Documentation/filesystems/ufs.txt> for more information.
  1240. The recently released UFS2 variant (used in FreeBSD 5.x) is
  1241. READ-ONLY supported.
  1242. If you only intend to mount files from some other Unix over the
  1243. network using NFS, you don't need the UFS file system support (but
  1244. you need NFS file system support obviously).
  1245. Note that this option is generally not needed for floppies, since a
  1246. good portable way to transport files and directories between unixes
  1247. (and even other operating systems) is given by the tar program ("man
  1248. tar" or preferably "info tar").
  1249. When accessing NeXTstep files, you may need to convert them from the
  1250. NeXT character set to the Latin1 character set; use the program
  1251. recode ("info recode") for this purpose.
  1252. To compile the UFS file system support as a module, choose M here: the
  1253. module will be called ufs.
  1254. If you haven't heard about all of this before, it's safe to say N.
  1255. config UFS_FS_WRITE
  1256. bool "UFS file system write support (DANGEROUS)"
  1257. depends on UFS_FS && EXPERIMENTAL
  1258. help
  1259. Say Y here if you want to try writing to UFS partitions. This is
  1260. experimental, so you should back up your UFS partitions beforehand.
  1261. config UFS_DEBUG
  1262. bool "UFS debugging"
  1263. depends on UFS_FS
  1264. help
  1265. If you are experiencing any problems with the UFS filesystem, say
  1266. Y here. This will result in _many_ additional debugging messages to be
  1267. written to the system log.
  1268. endmenu
  1269. menuconfig NETWORK_FILESYSTEMS
  1270. bool "Network File Systems"
  1271. default y
  1272. depends on NET
  1273. ---help---
  1274. Say Y here to get to see options for network filesystems and
  1275. filesystem-related networking code, such as NFS daemon and
  1276. RPCSEC security modules.
  1277. This option alone does not add any kernel code.
  1278. If you say N, all options in this submenu will be skipped and
  1279. disabled; if unsure, say Y here.
  1280. if NETWORK_FILESYSTEMS
  1281. config NFS_FS
  1282. tristate "NFS file system support"
  1283. depends on INET
  1284. select LOCKD
  1285. select SUNRPC
  1286. select NFS_ACL_SUPPORT if NFS_V3_ACL
  1287. help
  1288. If you are connected to some other (usually local) Unix computer
  1289. (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
  1290. on that computer (the NFS server) using the Network File Sharing
  1291. protocol, say Y. "Mounting files" means that the client can access
  1292. the files with usual UNIX commands as if they were sitting on the
  1293. client's hard disk. For this to work, the server must run the
  1294. programs nfsd and mountd (but does not need to have NFS file system
  1295. support enabled in its kernel). NFS is explained in the Network
  1296. Administrator's Guide, available from
  1297. <http://www.tldp.org/docs.html#guide>, on its man page: "man
  1298. nfs", and in the NFS-HOWTO.
  1299. A superior but less widely used alternative to NFS is provided by
  1300. the Coda file system; see "Coda file system support" below.
  1301. If you say Y here, you should have said Y to TCP/IP networking also.
  1302. This option would enlarge your kernel by about 27 KB.
  1303. To compile this file system support as a module, choose M here: the
  1304. module will be called nfs.
  1305. If you are configuring a diskless machine which will mount its root
  1306. file system over NFS at boot time, say Y here and to "Kernel
  1307. level IP autoconfiguration" above and to "Root file system on NFS"
  1308. below. You cannot compile this driver as a module in this case.
  1309. There are two packages designed for booting diskless machines over
  1310. the net: netboot, available from
  1311. <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
  1312. available from <http://ftp1.sourceforge.net/etherboot/>.
  1313. If you don't know what all this is about, say N.
  1314. config NFS_V3
  1315. bool "Provide NFSv3 client support"
  1316. depends on NFS_FS
  1317. help
  1318. Say Y here if you want your NFS client to be able to speak version
  1319. 3 of the NFS protocol.
  1320. If unsure, say Y.
  1321. config NFS_V3_ACL
  1322. bool "Provide client support for the NFSv3 ACL protocol extension"
  1323. depends on NFS_V3
  1324. help
  1325. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1326. Access Control Lists. The server should also be compiled with
  1327. the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
  1328. If unsure, say N.
  1329. config NFS_V4
  1330. bool "Provide NFSv4 client support (EXPERIMENTAL)"
  1331. depends on NFS_FS && EXPERIMENTAL
  1332. select RPCSEC_GSS_KRB5
  1333. help
  1334. Say Y here if you want your NFS client to be able to speak the newer
  1335. version 4 of the NFS protocol.
  1336. Note: Requires auxiliary userspace daemons which may be found on
  1337. http://www.citi.umich.edu/projects/nfsv4/
  1338. If unsure, say N.
  1339. config NFS_DIRECTIO
  1340. bool "Allow direct I/O on NFS files"
  1341. depends on NFS_FS
  1342. help
  1343. This option enables applications to perform uncached I/O on files
  1344. in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
  1345. is set for a file, its data is not cached in the system's page
  1346. cache. Data is moved to and from user-level application buffers
  1347. directly. Unlike local disk-based file systems, NFS O_DIRECT has
  1348. no alignment restrictions.
  1349. Unless your program is designed to use O_DIRECT properly, you are
  1350. much better off allowing the NFS client to manage data caching for
  1351. you. Misusing O_DIRECT can cause poor server performance or network
  1352. storms. This kernel build option defaults OFF to avoid exposing
  1353. system administrators unwittingly to a potentially hazardous
  1354. feature.
  1355. For more details on NFS O_DIRECT, see fs/nfs/direct.c.
  1356. If unsure, say N. This reduces the size of the NFS client, and
  1357. causes open() to return EINVAL if a file residing in NFS is
  1358. opened with the O_DIRECT flag.
  1359. config NFSD
  1360. tristate "NFS server support"
  1361. depends on INET
  1362. select LOCKD
  1363. select SUNRPC
  1364. select EXPORTFS
  1365. select NFSD_V2_ACL if NFSD_V3_ACL
  1366. select NFS_ACL_SUPPORT if NFSD_V2_ACL
  1367. select NFSD_TCP if NFSD_V4
  1368. select CRYPTO_MD5 if NFSD_V4
  1369. select CRYPTO if NFSD_V4
  1370. select FS_POSIX_ACL if NFSD_V4
  1371. help
  1372. If you want your Linux box to act as an NFS *server*, so that other
  1373. computers on your local network which support NFS can access certain
  1374. directories on your box transparently, you have two options: you can
  1375. use the self-contained user space program nfsd, in which case you
  1376. should say N here, or you can say Y and use the kernel based NFS
  1377. server. The advantage of the kernel based solution is that it is
  1378. faster.
  1379. In either case, you will need support software; the respective
  1380. locations are given in the file <file:Documentation/Changes> in the
  1381. NFS section.
  1382. If you say Y here, you will get support for version 2 of the NFS
  1383. protocol (NFSv2). If you also want NFSv3, say Y to the next question
  1384. as well.
  1385. Please read the NFS-HOWTO, available from
  1386. <http://www.tldp.org/docs.html#howto>.
  1387. To compile the NFS server support as a module, choose M here: the
  1388. module will be called nfsd. If unsure, say N.
  1389. config NFSD_V2_ACL
  1390. bool
  1391. depends on NFSD
  1392. config NFSD_V3
  1393. bool "Provide NFSv3 server support"
  1394. depends on NFSD
  1395. help
  1396. If you would like to include the NFSv3 server as well as the NFSv2
  1397. server, say Y here. If unsure, say Y.
  1398. config NFSD_V3_ACL
  1399. bool "Provide server support for the NFSv3 ACL protocol extension"
  1400. depends on NFSD_V3
  1401. help
  1402. Implement the NFSv3 ACL protocol extension for manipulating POSIX
  1403. Access Control Lists on exported file systems. NFS clients should
  1404. be compiled with the NFSv3 ACL protocol extension; see the
  1405. CONFIG_NFS_V3_ACL option. If unsure, say N.
  1406. config NFSD_V4
  1407. bool "Provide NFSv4 server support (EXPERIMENTAL)"
  1408. depends on NFSD && NFSD_V3 && EXPERIMENTAL
  1409. select RPCSEC_GSS_KRB5
  1410. help
  1411. If you would like to include the NFSv4 server as well as the NFSv2
  1412. and NFSv3 servers, say Y here. This feature is experimental, and
  1413. should only be used if you are interested in helping to test NFSv4.
  1414. If unsure, say N.
  1415. config NFSD_TCP
  1416. bool "Provide NFS server over TCP support"
  1417. depends on NFSD
  1418. default y
  1419. help
  1420. If you want your NFS server to support TCP connections, say Y here.
  1421. TCP connections usually perform better than the default UDP when
  1422. the network is lossy or congested. If unsure, say Y.
  1423. config ROOT_NFS
  1424. bool "Root file system on NFS"
  1425. depends on NFS_FS=y && IP_PNP
  1426. help
  1427. If you want your Linux box to mount its whole root file system (the
  1428. one containing the directory /) from some other computer over the
  1429. net via NFS (presumably because your box doesn't have a hard disk),
  1430. say Y. Read <file:Documentation/nfsroot.txt> for details. It is
  1431. likely that in this case, you also want to say Y to "Kernel level IP
  1432. autoconfiguration" so that your box can discover its network address
  1433. at boot time.
  1434. Most people say N here.
  1435. config LOCKD
  1436. tristate
  1437. config LOCKD_V4
  1438. bool
  1439. depends on NFSD_V3 || NFS_V3
  1440. default y
  1441. config EXPORTFS
  1442. tristate
  1443. config NFS_ACL_SUPPORT
  1444. tristate
  1445. select FS_POSIX_ACL
  1446. config NFS_COMMON
  1447. bool
  1448. depends on NFSD || NFS_FS
  1449. default y
  1450. config SUNRPC
  1451. tristate
  1452. config SUNRPC_GSS
  1453. tristate
  1454. config SUNRPC_XPRT_RDMA
  1455. tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
  1456. depends on SUNRPC && INFINIBAND && EXPERIMENTAL
  1457. default m
  1458. help
  1459. Adds a client RPC transport for supporting kernel NFS over RDMA
  1460. mounts, including Infiniband and iWARP. Experimental.
  1461. config SUNRPC_BIND34
  1462. bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
  1463. depends on SUNRPC && EXPERIMENTAL
  1464. help
  1465. Provides kernel support for querying rpcbind servers via versions 3
  1466. and 4 of the rpcbind protocol. The kernel automatically falls back
  1467. to version 2 if a remote rpcbind service does not support versions
  1468. 3 or 4.
  1469. If unsure, say N to get traditional behavior (version 2 rpcbind
  1470. requests only).
  1471. config RPCSEC_GSS_KRB5
  1472. tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
  1473. depends on SUNRPC && EXPERIMENTAL
  1474. select SUNRPC_GSS
  1475. select CRYPTO
  1476. select CRYPTO_MD5
  1477. select CRYPTO_DES
  1478. select CRYPTO_CBC
  1479. help
  1480. Provides for secure RPC calls by means of a gss-api
  1481. mechanism based on Kerberos V5. This is required for
  1482. NFSv4.
  1483. Note: Requires an auxiliary userspace daemon which may be found on
  1484. http://www.citi.umich.edu/projects/nfsv4/
  1485. If unsure, say N.
  1486. config RPCSEC_GSS_SPKM3
  1487. tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
  1488. depends on SUNRPC && EXPERIMENTAL
  1489. select SUNRPC_GSS
  1490. select CRYPTO
  1491. select CRYPTO_MD5
  1492. select CRYPTO_DES
  1493. select CRYPTO_CAST5
  1494. select CRYPTO_CBC
  1495. help
  1496. Provides for secure RPC calls by means of a gss-api
  1497. mechanism based on the SPKM3 public-key mechanism.
  1498. Note: Requires an auxiliary userspace daemon which may be found on
  1499. http://www.citi.umich.edu/projects/nfsv4/
  1500. If unsure, say N.
  1501. config SMB_FS
  1502. tristate "SMB file system support (to mount Windows shares etc.)"
  1503. depends on INET
  1504. select NLS
  1505. help
  1506. SMB (Server Message Block) is the protocol Windows for Workgroups
  1507. (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
  1508. files and printers over local networks. Saying Y here allows you to
  1509. mount their file systems (often called "shares" in this context) and
  1510. access them just like any other Unix directory. Currently, this
  1511. works only if the Windows machines use TCP/IP as the underlying
  1512. transport protocol, and not NetBEUI. For details, read
  1513. <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
  1514. available from <http://www.tldp.org/docs.html#howto>.
  1515. Note: if you just want your box to act as an SMB *server* and make
  1516. files and printing services available to Windows clients (which need
  1517. to have a TCP/IP stack), you don't need to say Y here; you can use
  1518. the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
  1519. for that.
  1520. General information about how to connect Linux, Windows machines and
  1521. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1522. To compile the SMB support as a module, choose M here: the module will
  1523. be called smbfs. Most people say N, however.
  1524. config SMB_NLS_DEFAULT
  1525. bool "Use a default NLS"
  1526. depends on SMB_FS
  1527. help
  1528. Enabling this will make smbfs use nls translations by default. You
  1529. need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
  1530. settings and you need to give the default nls for the SMB server as
  1531. CONFIG_SMB_NLS_REMOTE.
  1532. The nls settings can be changed at mount time, if your smbmount
  1533. supports that, using the codepage and iocharset parameters.
  1534. smbmount from samba 2.2.0 or later supports this.
  1535. config SMB_NLS_REMOTE
  1536. string "Default Remote NLS Option"
  1537. depends on SMB_NLS_DEFAULT
  1538. default "cp437"
  1539. help
  1540. This setting allows you to specify a default value for which
  1541. codepage the server uses. If this field is left blank no
  1542. translations will be done by default. The local codepage/charset
  1543. default to CONFIG_NLS_DEFAULT.
  1544. The nls settings can be changed at mount time, if your smbmount
  1545. supports that, using the codepage and iocharset parameters.
  1546. smbmount from samba 2.2.0 or later supports this.
  1547. config CIFS
  1548. tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
  1549. depends on INET
  1550. select NLS
  1551. help
  1552. This is the client VFS module for the Common Internet File System
  1553. (CIFS) protocol which is the successor to the Server Message Block
  1554. (SMB) protocol, the native file sharing mechanism for most early
  1555. PC operating systems. The CIFS protocol is fully supported by
  1556. file servers such as Windows 2000 (including Windows 2003, NT 4
  1557. and Windows XP) as well by Samba (which provides excellent CIFS
  1558. server support for Linux and many other operating systems). Limited
  1559. support for OS/2 and Windows ME and similar servers is provided as well.
  1560. The intent of the cifs module is to provide an advanced
  1561. network file system client for mounting to CIFS compliant servers,
  1562. including support for dfs (hierarchical name space), secure per-user
  1563. session establishment, safe distributed caching (oplock), optional
  1564. packet signing, Unicode and other internationalization improvements.
  1565. If you need to mount to Samba or Windows from this machine, say Y.
  1566. config CIFS_STATS
  1567. bool "CIFS statistics"
  1568. depends on CIFS
  1569. help
  1570. Enabling this option will cause statistics for each server share
  1571. mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
  1572. config CIFS_STATS2
  1573. bool "Extended statistics"
  1574. depends on CIFS_STATS
  1575. help
  1576. Enabling this option will allow more detailed statistics on SMB
  1577. request timing to be displayed in /proc/fs/cifs/DebugData and also
  1578. allow optional logging of slow responses to dmesg (depending on the
  1579. value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
  1580. These additional statistics may have a minor effect on performance
  1581. and memory utilization.
  1582. Unless you are a developer or are doing network performance analysis
  1583. or tuning, say N.
  1584. config CIFS_WEAK_PW_HASH
  1585. bool "Support legacy servers which use weaker LANMAN security"
  1586. depends on CIFS
  1587. help
  1588. Modern CIFS servers including Samba and most Windows versions
  1589. (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
  1590. security mechanisms. These hash the password more securely
  1591. than the mechanisms used in the older LANMAN version of the
  1592. SMB protocol needed to establish sessions with old SMB servers.
  1593. Enabling this option allows the cifs module to mount to older
  1594. LANMAN based servers such as OS/2 and Windows 95, but such
  1595. mounts may be less secure than mounts using NTLM or more recent
  1596. security mechanisms if you are on a public network. Unless you
  1597. have a need to access old SMB servers (and are on a private
  1598. network) you probably want to say N. Even if this support
  1599. is enabled in the kernel build, they will not be used
  1600. automatically. At runtime LANMAN mounts are disabled but
  1601. can be set to required (or optional) either in
  1602. /proc/fs/cifs (see fs/cifs/README for more detail) or via an
  1603. option on the mount command. This support is disabled by
  1604. default in order to reduce the possibility of a downgrade
  1605. attack.
  1606. If unsure, say N.
  1607. config CIFS_XATTR
  1608. bool "CIFS extended attributes"
  1609. depends on CIFS
  1610. help
  1611. Extended attributes are name:value pairs associated with inodes by
  1612. the kernel or by users (see the attr(5) manual page, or visit
  1613. <http://acl.bestbits.at/> for details). CIFS maps the name of
  1614. extended attributes beginning with the user namespace prefix
  1615. to SMB/CIFS EAs. EAs are stored on Windows servers without the
  1616. user namespace prefix, but their names are seen by Linux cifs clients
  1617. prefaced by the user namespace prefix. The system namespace
  1618. (used by some filesystems to store ACLs) is not supported at
  1619. this time.
  1620. If unsure, say N.
  1621. config CIFS_POSIX
  1622. bool "CIFS POSIX Extensions"
  1623. depends on CIFS_XATTR
  1624. help
  1625. Enabling this option will cause the cifs client to attempt to
  1626. negotiate a newer dialect with servers, such as Samba 3.0.5
  1627. or later, that optionally can handle more POSIX like (rather
  1628. than Windows like) file behavior. It also enables
  1629. support for POSIX ACLs (getfacl and setfacl) to servers
  1630. (such as Samba 3.10 and later) which can negotiate
  1631. CIFS POSIX ACL support. If unsure, say N.
  1632. config CIFS_DEBUG2
  1633. bool "Enable additional CIFS debugging routines"
  1634. depends on CIFS
  1635. help
  1636. Enabling this option adds a few more debugging routines
  1637. to the cifs code which slightly increases the size of
  1638. the cifs module and can cause additional logging of debug
  1639. messages in some error paths, slowing performance. This
  1640. option can be turned off unless you are debugging
  1641. cifs problems. If unsure, say N.
  1642. config CIFS_EXPERIMENTAL
  1643. bool "CIFS Experimental Features (EXPERIMENTAL)"
  1644. depends on CIFS && EXPERIMENTAL
  1645. help
  1646. Enables cifs features under testing. These features are
  1647. experimental and currently include DFS support and directory
  1648. change notification ie fcntl(F_DNOTIFY), as well as the upcall
  1649. mechanism which will be used for Kerberos session negotiation
  1650. and uid remapping. Some of these features also may depend on
  1651. setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
  1652. (which is disabled by default). See the file fs/cifs/README
  1653. for more details. If unsure, say N.
  1654. config CIFS_UPCALL
  1655. bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
  1656. depends on CIFS_EXPERIMENTAL
  1657. depends on KEYS
  1658. help
  1659. Enables an upcall mechanism for CIFS which will be used to contact
  1660. userspace helper utilities to provide SPNEGO packaged Kerberos
  1661. tickets which are needed to mount to certain secure servers
  1662. (for which more secure Kerberos authentication is required). If
  1663. unsure, say N.
  1664. config NCP_FS
  1665. tristate "NCP file system support (to mount NetWare volumes)"
  1666. depends on IPX!=n || INET
  1667. help
  1668. NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
  1669. used by Novell NetWare clients to talk to file servers. It is to
  1670. IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
  1671. to mount NetWare file server volumes and to access them just like
  1672. any other Unix directory. For details, please read the file
  1673. <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
  1674. the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
  1675. You do not have to say Y here if you want your Linux box to act as a
  1676. file *server* for Novell NetWare clients.
  1677. General information about how to connect Linux, Windows machines and
  1678. Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
  1679. To compile this as a module, choose M here: the module will be called
  1680. ncpfs. Say N unless you are connected to a Novell network.
  1681. source "fs/ncpfs/Kconfig"
  1682. config CODA_FS
  1683. tristate "Coda file system support (advanced network fs)"
  1684. depends on INET
  1685. help
  1686. Coda is an advanced network file system, similar to NFS in that it
  1687. enables you to mount file systems of a remote server and access them
  1688. with regular Unix commands as if they were sitting on your hard
  1689. disk. Coda has several advantages over NFS: support for
  1690. disconnected operation (e.g. for laptops), read/write server
  1691. replication, security model for authentication and encryption,
  1692. persistent client caches and write back caching.
  1693. If you say Y here, your Linux box will be able to act as a Coda
  1694. *client*. You will need user level code as well, both for the
  1695. client and server. Servers are currently user level, i.e. they need
  1696. no kernel support. Please read
  1697. <file:Documentation/filesystems/coda.txt> and check out the Coda
  1698. home page <http://www.coda.cs.cmu.edu/>.
  1699. To compile the coda client support as a module, choose M here: the
  1700. module will be called coda.
  1701. config CODA_FS_OLD_API
  1702. bool "Use 96-bit Coda file identifiers"
  1703. depends on CODA_FS
  1704. help
  1705. A new kernel-userspace API had to be introduced for Coda v6.0
  1706. to support larger 128-bit file identifiers as needed by the
  1707. new realms implementation.
  1708. However this new API is not backward compatible with older
  1709. clients. If you really need to run the old Coda userspace
  1710. cache manager then say Y.
  1711. For most cases you probably want to say N.
  1712. config AFS_FS
  1713. tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
  1714. depends on INET && EXPERIMENTAL
  1715. select AF_RXRPC
  1716. help
  1717. If you say Y here, you will get an experimental Andrew File System
  1718. driver. It currently only supports unsecured read-only AFS access.
  1719. See <file:Documentation/filesystems/afs.txt> for more information.
  1720. If unsure, say N.
  1721. config AFS_DEBUG
  1722. bool "AFS dynamic debugging"
  1723. depends on AFS_FS
  1724. help
  1725. Say Y here to make runtime controllable debugging messages appear.
  1726. See <file:Documentation/filesystems/afs.txt> for more information.
  1727. If unsure, say N.
  1728. config 9P_FS
  1729. tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
  1730. depends on INET && NET_9P && EXPERIMENTAL
  1731. help
  1732. If you say Y here, you will get experimental support for
  1733. Plan 9 resource sharing via the 9P2000 protocol.
  1734. See <http://v9fs.sf.net> for more information.
  1735. If unsure, say N.
  1736. endif # NETWORK_FILESYSTEMS
  1737. if BLOCK
  1738. menu "Partition Types"
  1739. source "fs/partitions/Kconfig"
  1740. endmenu
  1741. endif
  1742. source "fs/nls/Kconfig"
  1743. source "fs/dlm/Kconfig"
  1744. endmenu