1# 2# File system configuration 3# 4 5menu "File systems" 6 7if BLOCK 8 9config EXT2_FS 10 tristate "Second extended fs support" 11 help 12 Ext2 is a standard Linux file system for hard disks. 13 14 To compile this file system support as a module, choose M here: the 15 module will be called ext2. 16 17 If unsure, say Y. 18 19config EXT2_FS_XATTR 20 bool "Ext2 extended attributes" 21 depends on EXT2_FS 22 help 23 Extended attributes are name:value pairs associated with inodes by 24 the kernel or by users (see the attr(5) manual page, or visit 25 <http://acl.bestbits.at/> for details). 26 27 If unsure, say N. 28 29config EXT2_FS_POSIX_ACL 30 bool "Ext2 POSIX Access Control Lists" 31 depends on EXT2_FS_XATTR 32 select FS_POSIX_ACL 33 help 34 Posix Access Control Lists (ACLs) support permissions for users and 35 groups beyond the owner/group/world scheme. 36 37 To learn more about Access Control Lists, visit the Posix ACLs for 38 Linux website <http://acl.bestbits.at/>. 39 40 If you don't know what Access Control Lists are, say N 41 42config EXT2_FS_SECURITY 43 bool "Ext2 Security Labels" 44 depends on EXT2_FS_XATTR 45 help 46 Security labels support alternative access control models 47 implemented by security modules like SELinux. This option 48 enables an extended attribute handler for file security 49 labels in the ext2 filesystem. 50 51 If you are not using a security module that requires using 52 extended attributes for file security labels, say N. 53 54config EXT2_FS_XIP 55 bool "Ext2 execute in place support" 56 depends on EXT2_FS && MMU 57 help 58 Execute in place can be used on memory-backed block devices. If you 59 enable this option, you can select to mount block devices which are 60 capable of this feature without using the page cache. 61 62 If you do not use a block device that is capable of using this, 63 or if unsure, say N. 64 65config FS_XIP 66# execute in place 67 bool 68 depends on EXT2_FS_XIP 69 default y 70 71config EXT3_FS 72 tristate "Ext3 journalling file system support" 73 select JBD 74 help 75 This is the journalling version of the Second extended file system 76 (often called ext3), the de facto standard Linux file system 77 (method to organize files on a storage device) for hard disks. 78 79 The journalling code included in this driver means you do not have 80 to run e2fsck (file system checker) on your file systems after a 81 crash. The journal keeps track of any changes that were being made 82 at the time the system crashed, and can ensure that your file system 83 is consistent without the need for a lengthy check. 84 85 Other than adding the journal to the file system, the on-disk format 86 of ext3 is identical to ext2. It is possible to freely switch 87 between using the ext3 driver and the ext2 driver, as long as the 88 file system has been cleanly unmounted, or e2fsck is run on the file 89 system. 90 91 To add a journal on an existing ext2 file system or change the 92 behavior of ext3 file systems, you can use the tune2fs utility ("man 93 tune2fs"). To modify attributes of files and directories on ext3 94 file systems, use chattr ("man chattr"). You need to be using 95 e2fsprogs version 1.20 or later in order to create ext3 journals 96 (available at <http://sourceforge.net/projects/e2fsprogs/>). 97 98 To compile this file system support as a module, choose M here: the 99 module will be called ext3. 100 101config EXT3_FS_XATTR 102 bool "Ext3 extended attributes" 103 depends on EXT3_FS 104 default y 105 help 106 Extended attributes are name:value pairs associated with inodes by 107 the kernel or by users (see the attr(5) manual page, or visit 108 <http://acl.bestbits.at/> for details). 109 110 If unsure, say N. 111 112 You need this for POSIX ACL support on ext3. 113 114config EXT3_FS_POSIX_ACL 115 bool "Ext3 POSIX Access Control Lists" 116 depends on EXT3_FS_XATTR 117 select FS_POSIX_ACL 118 help 119 Posix Access Control Lists (ACLs) support permissions for users and 120 groups beyond the owner/group/world scheme. 121 122 To learn more about Access Control Lists, visit the Posix ACLs for 123 Linux website <http://acl.bestbits.at/>. 124 125 If you don't know what Access Control Lists are, say N 126 127config EXT3_FS_SECURITY 128 bool "Ext3 Security Labels" 129 depends on EXT3_FS_XATTR 130 help 131 Security labels support alternative access control models 132 implemented by security modules like SELinux. This option 133 enables an extended attribute handler for file security 134 labels in the ext3 filesystem. 135 136 If you are not using a security module that requires using 137 extended attributes for file security labels, say N. 138 139config EXT4_FS 140 tristate "The Extended 4 (ext4) filesystem" 141 select JBD2 142 select CRC16 143 help 144 This is the next generation of the ext3 filesystem. 145 146 Unlike the change from ext2 filesystem to ext3 filesystem, 147 the on-disk format of ext4 is not forwards compatible with 148 ext3; it is based on extent maps and it supports 48-bit 149 physical block numbers. The ext4 filesystem also supports delayed 150 allocation, persistent preallocation, high resolution time stamps, 151 and a number of other features to improve performance and speed 152 up fsck time. For more information, please see the web pages at 153 http://ext4.wiki.kernel.org. 154 155 The ext4 filesystem will support mounting an ext3 156 filesystem; while there will be some performance gains from 157 the delayed allocation and inode table readahead, the best 158 performance gains will require enabling ext4 features in the 159 filesystem, or formating a new filesystem as an ext4 160 filesystem initially. 161 162 To compile this file system support as a module, choose M here. The 163 module will be called ext4dev. 164 165 If unsure, say N. 166 167config EXT4DEV_COMPAT 168 bool "Enable ext4dev compatibility" 169 depends on EXT4_FS 170 help 171 Starting with 2.6.28, the name of the ext4 filesystem was 172 renamed from ext4dev to ext4. Unfortunately there are some 173 legacy userspace programs (such as klibc's fstype) have 174 "ext4dev" hardcoded. 175 176 To enable backwards compatibility so that systems that are 177 still expecting to mount ext4 filesystems using ext4dev, 178 chose Y here. This feature will go away by 2.6.31, so 179 please arrange to get your userspace programs fixed! 180 181config EXT4_FS_XATTR 182 bool "Ext4 extended attributes" 183 depends on EXT4_FS 184 default y 185 help 186 Extended attributes are name:value pairs associated with inodes by 187 the kernel or by users (see the attr(5) manual page, or visit 188 <http://acl.bestbits.at/> for details). 189 190 If unsure, say N. 191 192 You need this for POSIX ACL support on ext4. 193 194config EXT4_FS_POSIX_ACL 195 bool "Ext4 POSIX Access Control Lists" 196 depends on EXT4_FS_XATTR 197 select FS_POSIX_ACL 198 help 199 POSIX Access Control Lists (ACLs) support permissions for users and 200 groups beyond the owner/group/world scheme. 201 202 To learn more about Access Control Lists, visit the POSIX ACLs for 203 Linux website <http://acl.bestbits.at/>. 204 205 If you don't know what Access Control Lists are, say N 206 207config EXT4_FS_SECURITY 208 bool "Ext4 Security Labels" 209 depends on EXT4_FS_XATTR 210 help 211 Security labels support alternative access control models 212 implemented by security modules like SELinux. This option 213 enables an extended attribute handler for file security 214 labels in the ext4 filesystem. 215 216 If you are not using a security module that requires using 217 extended attributes for file security labels, say N. 218 219config JBD 220 tristate 221 help 222 This is a generic journalling layer for block devices. It is 223 currently used by the ext3 file system, but it could also be 224 used to add journal support to other file systems or block 225 devices such as RAID or LVM. 226 227 If you are using the ext3 file system, you need to say Y here. 228 If you are not using ext3 then you will probably want to say N. 229 230 To compile this device as a module, choose M here: the module will be 231 called jbd. If you are compiling ext3 into the kernel, you 232 cannot compile this code as a module. 233 234config JBD_DEBUG 235 bool "JBD (ext3) debugging support" 236 depends on JBD && DEBUG_FS 237 help 238 If you are using the ext3 journaled file system (or potentially any 239 other file system/device using JBD), this option allows you to 240 enable debugging output while the system is running, in order to 241 help track down any problems you are having. By default the 242 debugging output will be turned off. 243 244 If you select Y here, then you will be able to turn on debugging 245 with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a 246 number between 1 and 5, the higher the number, the more debugging 247 output is generated. To turn debugging off again, do 248 "echo 0 > /sys/kernel/debug/jbd/jbd-debug". 249 250config JBD2 251 tristate 252 select CRC32 253 help 254 This is a generic journaling layer for block devices that support 255 both 32-bit and 64-bit block numbers. It is currently used by 256 the ext4 and OCFS2 filesystems, but it could also be used to add 257 journal support to other file systems or block devices such 258 as RAID or LVM. 259 260 If you are using ext4 or OCFS2, you need to say Y here. 261 If you are not using ext4 or OCFS2 then you will 262 probably want to say N. 263 264 To compile this device as a module, choose M here. The module will be 265 called jbd2. If you are compiling ext4 or OCFS2 into the kernel, 266 you cannot compile this code as a module. 267 268config JBD2_DEBUG 269 bool "JBD2 (ext4) debugging support" 270 depends on JBD2 && DEBUG_FS 271 help 272 If you are using the ext4 journaled file system (or 273 potentially any other filesystem/device using JBD2), this option 274 allows you to enable debugging output while the system is running, 275 in order to help track down any problems you are having. 276 By default, the debugging output will be turned off. 277 278 If you select Y here, then you will be able to turn on debugging 279 with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a 280 number between 1 and 5. The higher the number, the more debugging 281 output is generated. To turn debugging off again, do 282 "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug". 283 284config FS_MBCACHE 285# Meta block cache for Extended Attributes (ext2/ext3/ext4) 286 tristate 287 depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR 288 default y if EXT2_FS=y || EXT3_FS=y || EXT4_FS=y 289 default m if EXT2_FS=m || EXT3_FS=m || EXT4_FS=m 290 291config REISERFS_FS 292 tristate "Reiserfs support" 293 help 294 Stores not just filenames but the files themselves in a balanced 295 tree. Uses journalling. 296 297 Balanced trees are more efficient than traditional file system 298 architectural foundations. 299 300 In general, ReiserFS is as fast as ext2, but is very efficient with 301 large directories and small files. Additional patches are needed 302 for NFS and quotas, please see <http://www.namesys.com/> for links. 303 304 It is more easily extended to have features currently found in 305 database and keyword search systems than block allocation based file 306 systems are. The next version will be so extended, and will support 307 plugins consistent with our motto ``It takes more than a license to 308 make source code open.'' 309 310 Read <http://www.namesys.com/> to learn more about reiserfs. 311 312 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 313 314 If you like it, you can pay us to add new features to it that you 315 need, buy a support contract, or pay us to port it to another OS. 316 317config REISERFS_CHECK 318 bool "Enable reiserfs debug mode" 319 depends on REISERFS_FS 320 help 321 If you set this to Y, then ReiserFS will perform every check it can 322 possibly imagine of its internal consistency throughout its 323 operation. It will also go substantially slower. More than once we 324 have forgotten that this was on, and then gone despondent over the 325 latest benchmarks.:-) Use of this option allows our team to go all 326 out in checking for consistency when debugging without fear of its 327 effect on end users. If you are on the verge of sending in a bug 328 report, say Y and you might get a useful error message. Almost 329 everyone should say N. 330 331config REISERFS_PROC_INFO 332 bool "Stats in /proc/fs/reiserfs" 333 depends on REISERFS_FS && PROC_FS 334 help 335 Create under /proc/fs/reiserfs a hierarchy of files, displaying 336 various ReiserFS statistics and internal data at the expense of 337 making your kernel or module slightly larger (+8 KB). This also 338 increases the amount of kernel memory required for each mount. 339 Almost everyone but ReiserFS developers and people fine-tuning 340 reiserfs or tracing problems should say N. 341 342config REISERFS_FS_XATTR 343 bool "ReiserFS extended attributes" 344 depends on REISERFS_FS 345 help 346 Extended attributes are name:value pairs associated with inodes by 347 the kernel or by users (see the attr(5) manual page, or visit 348 <http://acl.bestbits.at/> for details). 349 350 If unsure, say N. 351 352config REISERFS_FS_POSIX_ACL 353 bool "ReiserFS POSIX Access Control Lists" 354 depends on REISERFS_FS_XATTR 355 select FS_POSIX_ACL 356 help 357 Posix Access Control Lists (ACLs) support permissions for users and 358 groups beyond the owner/group/world scheme. 359 360 To learn more about Access Control Lists, visit the Posix ACLs for 361 Linux website <http://acl.bestbits.at/>. 362 363 If you don't know what Access Control Lists are, say N 364 365config REISERFS_FS_SECURITY 366 bool "ReiserFS Security Labels" 367 depends on REISERFS_FS_XATTR 368 help 369 Security labels support alternative access control models 370 implemented by security modules like SELinux. This option 371 enables an extended attribute handler for file security 372 labels in the ReiserFS filesystem. 373 374 If you are not using a security module that requires using 375 extended attributes for file security labels, say N. 376 377config JFS_FS 378 tristate "JFS filesystem support" 379 select NLS 380 help 381 This is a port of IBM's Journaled Filesystem . More information is 382 available in the file <file:Documentation/filesystems/jfs.txt>. 383 384 If you do not intend to use the JFS filesystem, say N. 385 386config JFS_POSIX_ACL 387 bool "JFS POSIX Access Control Lists" 388 depends on JFS_FS 389 select FS_POSIX_ACL 390 help 391 Posix Access Control Lists (ACLs) support permissions for users and 392 groups beyond the owner/group/world scheme. 393 394 To learn more about Access Control Lists, visit the Posix ACLs for 395 Linux website <http://acl.bestbits.at/>. 396 397 If you don't know what Access Control Lists are, say N 398 399config JFS_SECURITY 400 bool "JFS Security Labels" 401 depends on JFS_FS 402 help 403 Security labels support alternative access control models 404 implemented by security modules like SELinux. This option 405 enables an extended attribute handler for file security 406 labels in the jfs filesystem. 407 408 If you are not using a security module that requires using 409 extended attributes for file security labels, say N. 410 411config JFS_DEBUG 412 bool "JFS debugging" 413 depends on JFS_FS 414 help 415 If you are experiencing any problems with the JFS filesystem, say 416 Y here. This will result in additional debugging messages to be 417 written to the system log. Under normal circumstances, this 418 results in very little overhead. 419 420config JFS_STATISTICS 421 bool "JFS statistics" 422 depends on JFS_FS 423 help 424 Enabling this option will cause statistics from the JFS file system 425 to be made available to the user in the /proc/fs/jfs/ directory. 426 427config FS_POSIX_ACL 428# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4) 429# 430# NOTE: you can implement Posix ACLs without these helpers (XFS does). 431# Never use this symbol for ifdefs. 432# 433 bool 434 default n 435 436config FILE_LOCKING 437 bool "Enable POSIX file locking API" if EMBEDDED 438 default y 439 help 440 This option enables standard file locking support, required 441 for filesystems like NFS and for the flock() system 442 call. Disabling this option saves about 11k. 443 444source "fs/xfs/Kconfig" 445source "fs/gfs2/Kconfig" 446 447config OCFS2_FS 448 tristate "OCFS2 file system support" 449 depends on NET && SYSFS 450 select CONFIGFS_FS 451 select JBD2 452 select CRC32 453 help 454 OCFS2 is a general purpose extent based shared disk cluster file 455 system with many similarities to ext3. It supports 64 bit inode 456 numbers, and has automatically extending metadata groups which may 457 also make it attractive for non-clustered use. 458 459 You'll want to install the ocfs2-tools package in order to at least 460 get "mount.ocfs2". 461 462 Project web page: http://oss.oracle.com/projects/ocfs2 463 Tools web page: http://oss.oracle.com/projects/ocfs2-tools 464 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/ 465 466 For more information on OCFS2, see the file 467 <file:Documentation/filesystems/ocfs2.txt>. 468 469config OCFS2_FS_O2CB 470 tristate "O2CB Kernelspace Clustering" 471 depends on OCFS2_FS 472 default y 473 help 474 OCFS2 includes a simple kernelspace clustering package, the OCFS2 475 Cluster Base. It only requires a very small userspace component 476 to configure it. This comes with the standard ocfs2-tools package. 477 O2CB is limited to maintaining a cluster for OCFS2 file systems. 478 It cannot manage any other cluster applications. 479 480 It is always safe to say Y here, as the clustering method is 481 run-time selectable. 482 483config OCFS2_FS_USERSPACE_CLUSTER 484 tristate "OCFS2 Userspace Clustering" 485 depends on OCFS2_FS && DLM 486 default y 487 help 488 This option will allow OCFS2 to use userspace clustering services 489 in conjunction with the DLM in fs/dlm. If you are using a 490 userspace cluster manager, say Y here. 491 492 It is safe to say Y, as the clustering method is run-time 493 selectable. 494 495config OCFS2_FS_STATS 496 bool "OCFS2 statistics" 497 depends on OCFS2_FS 498 default y 499 help 500 This option allows some fs statistics to be captured. Enabling 501 this option may increase the memory consumption. 502 503config OCFS2_DEBUG_MASKLOG 504 bool "OCFS2 logging support" 505 depends on OCFS2_FS 506 default y 507 help 508 The ocfs2 filesystem has an extensive logging system. The system 509 allows selection of events to log via files in /sys/o2cb/logmask/. 510 This option will enlarge your kernel, but it allows debugging of 511 ocfs2 filesystem issues. 512 513config OCFS2_DEBUG_FS 514 bool "OCFS2 expensive checks" 515 depends on OCFS2_FS 516 default n 517 help 518 This option will enable expensive consistency checks. Enable 519 this option for debugging only as it is likely to decrease 520 performance of the filesystem. 521 522config OCFS2_COMPAT_JBD 523 bool "Use JBD for compatibility" 524 depends on OCFS2_FS 525 default n 526 select JBD 527 help 528 The ocfs2 filesystem now uses JBD2 for its journalling. JBD2 529 is backwards compatible with JBD. It is safe to say N here. 530 However, if you really want to use the original JBD, say Y here. 531 532endif # BLOCK 533 534config DNOTIFY 535 bool "Dnotify support" 536 default y 537 help 538 Dnotify is a directory-based per-fd file change notification system 539 that uses signals to communicate events to user-space. There exist 540 superior alternatives, but some applications may still rely on 541 dnotify. 542 543 If unsure, say Y. 544 545config INOTIFY 546 bool "Inotify file change notification support" 547 default y 548 ---help--- 549 Say Y here to enable inotify support. Inotify is a file change 550 notification system and a replacement for dnotify. Inotify fixes 551 numerous shortcomings in dnotify and introduces several new features 552 including multiple file events, one-shot support, and unmount 553 notification. 554 555 For more information, see <file:Documentation/filesystems/inotify.txt> 556 557 If unsure, say Y. 558 559config INOTIFY_USER 560 bool "Inotify support for userspace" 561 depends on INOTIFY 562 default y 563 ---help--- 564 Say Y here to enable inotify support for userspace, including the 565 associated system calls. Inotify allows monitoring of both files and 566 directories via a single open fd. Events are read from the file 567 descriptor, which is also select()- and poll()-able. 568 569 For more information, see <file:Documentation/filesystems/inotify.txt> 570 571 If unsure, say Y. 572 573config QUOTA 574 bool "Quota support" 575 help 576 If you say Y here, you will be able to set per user limits for disk 577 usage (also called disk quotas). Currently, it works for the 578 ext2, ext3, and reiserfs file system. ext3 also supports journalled 579 quotas for which you don't need to run quotacheck(8) after an unclean 580 shutdown. 581 For further details, read the Quota mini-HOWTO, available from 582 <http://www.tldp.org/docs.html#howto>, or the documentation provided 583 with the quota tools. Probably the quota support is only useful for 584 multi user systems. If unsure, say N. 585 586config QUOTA_NETLINK_INTERFACE 587 bool "Report quota messages through netlink interface" 588 depends on QUOTA && NET 589 help 590 If you say Y here, quota warnings (about exceeding softlimit, reaching 591 hardlimit, etc.) will be reported through netlink interface. If unsure, 592 say Y. 593 594config PRINT_QUOTA_WARNING 595 bool "Print quota warnings to console (OBSOLETE)" 596 depends on QUOTA 597 default y 598 help 599 If you say Y here, quota warnings (about exceeding softlimit, reaching 600 hardlimit, etc.) will be printed to the process' controlling terminal. 601 Note that this behavior is currently deprecated and may go away in 602 future. Please use notification via netlink socket instead. 603 604config QFMT_V1 605 tristate "Old quota format support" 606 depends on QUOTA 607 help 608 This quota format was (is) used by kernels earlier than 2.4.22. If 609 you have quota working and you don't want to convert to new quota 610 format say Y here. 611 612config QFMT_V2 613 tristate "Quota format v2 support" 614 depends on QUOTA 615 help 616 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 617 need this functionality say Y here. 618 619config QUOTACTL 620 bool 621 depends on XFS_QUOTA || QUOTA 622 default y 623 624config AUTOFS_FS 625 tristate "Kernel automounter support" 626 help 627 The automounter is a tool to automatically mount remote file systems 628 on demand. This implementation is partially kernel-based to reduce 629 overhead in the already-mounted case; this is unlike the BSD 630 automounter (amd), which is a pure user space daemon. 631 632 To use the automounter you need the user-space tools from the autofs 633 package; you can find the location in <file:Documentation/Changes>. 634 You also want to answer Y to "NFS file system support", below. 635 636 If you want to use the newer version of the automounter with more 637 features, say N here and say Y to "Kernel automounter v4 support", 638 below. 639 640 To compile this support as a module, choose M here: the module will be 641 called autofs. 642 643 If you are not a part of a fairly large, distributed network, you 644 probably do not need an automounter, and can say N here. 645 646config AUTOFS4_FS 647 tristate "Kernel automounter version 4 support (also supports v3)" 648 help 649 The automounter is a tool to automatically mount remote file systems 650 on demand. This implementation is partially kernel-based to reduce 651 overhead in the already-mounted case; this is unlike the BSD 652 automounter (amd), which is a pure user space daemon. 653 654 To use the automounter you need the user-space tools from 655 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 656 want to answer Y to "NFS file system support", below. 657 658 To compile this support as a module, choose M here: the module will be 659 called autofs4. You will need to add "alias autofs autofs4" to your 660 modules configuration file. 661 662 If you are not a part of a fairly large, distributed network or 663 don't have a laptop which needs to dynamically reconfigure to the 664 local network, you probably do not need an automounter, and can say 665 N here. 666 667config FUSE_FS 668 tristate "Filesystem in Userspace support" 669 help 670 With FUSE it is possible to implement a fully functional filesystem 671 in a userspace program. 672 673 There's also companion library: libfuse. This library along with 674 utilities is available from the FUSE homepage: 675 <http://fuse.sourceforge.net/> 676 677 See <file:Documentation/filesystems/fuse.txt> for more information. 678 See <file:Documentation/Changes> for needed library/utility version. 679 680 If you want to develop a userspace FS, or if you want to use 681 a filesystem based on FUSE, answer Y or M. 682 683config GENERIC_ACL 684 bool 685 select FS_POSIX_ACL 686 687if BLOCK 688menu "CD-ROM/DVD Filesystems" 689 690config ISO9660_FS 691 tristate "ISO 9660 CDROM file system support" 692 help 693 This is the standard file system used on CD-ROMs. It was previously 694 known as "High Sierra File System" and is called "hsfs" on other 695 Unix systems. The so-called Rock-Ridge extensions which allow for 696 long Unix filenames and symbolic links are also supported by this 697 driver. If you have a CD-ROM drive and want to do more with it than 698 just listen to audio CDs and watch its LEDs, say Y (and read 699 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 700 available from <http://www.tldp.org/docs.html#howto>), thereby 701 enlarging your kernel by about 27 KB; otherwise say N. 702 703 To compile this file system support as a module, choose M here: the 704 module will be called isofs. 705 706config JOLIET 707 bool "Microsoft Joliet CDROM extensions" 708 depends on ISO9660_FS 709 select NLS 710 help 711 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 712 which allows for long filenames in unicode format (unicode is the 713 new 16 bit character code, successor to ASCII, which encodes the 714 characters of almost all languages of the world; see 715 <http://www.unicode.org/> for more information). Say Y here if you 716 want to be able to read Joliet CD-ROMs under Linux. 717 718config ZISOFS 719 bool "Transparent decompression extension" 720 depends on ISO9660_FS 721 select ZLIB_INFLATE 722 help 723 This is a Linux-specific extension to RockRidge which lets you store 724 data in compressed form on a CD-ROM and have it transparently 725 decompressed when the CD-ROM is accessed. See 726 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 727 necessary to create such a filesystem. Say Y here if you want to be 728 able to read such compressed CD-ROMs. 729 730config UDF_FS 731 tristate "UDF file system support" 732 select CRC_ITU_T 733 help 734 This is the new file system used on some CD-ROMs and DVDs. Say Y if 735 you intend to mount DVD discs or CDRW's written in packet mode, or 736 if written to by other UDF utilities, such as DirectCD. 737 Please read <file:Documentation/filesystems/udf.txt>. 738 739 To compile this file system support as a module, choose M here: the 740 module will be called udf. 741 742 If unsure, say N. 743 744config UDF_NLS 745 bool 746 default y 747 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 748 749endmenu 750endif # BLOCK 751 752if BLOCK 753menu "DOS/FAT/NT Filesystems" 754 755config FAT_FS 756 tristate 757 select NLS 758 help 759 If you want to use one of the FAT-based file systems (the MS-DOS and 760 VFAT (Windows 95) file systems), then you must say Y or M here 761 to include FAT support. You will then be able to mount partitions or 762 diskettes with FAT-based file systems and transparently access the 763 files on them, i.e. MSDOS files will look and behave just like all 764 other Unix files. 765 766 This FAT support is not a file system in itself, it only provides 767 the foundation for the other file systems. You will have to say Y or 768 M to at least one of "MSDOS fs support" or "VFAT fs support" in 769 order to make use of it. 770 771 Another way to read and write MSDOS floppies and hard drive 772 partitions from within Linux (but not transparently) is with the 773 mtools ("man mtools") program suite. You don't need to say Y here in 774 order to do that. 775 776 If you need to move large files on floppies between a DOS and a 777 Linux box, say Y here, mount the floppy under Linux with an MSDOS 778 file system and use GNU tar's M option. GNU tar is a program 779 available for Unix and DOS ("man tar" or "info tar"). 780 781 The FAT support will enlarge your kernel by about 37 KB. If unsure, 782 say Y. 783 784 To compile this as a module, choose M here: the module will be called 785 fat. Note that if you compile the FAT support as a module, you 786 cannot compile any of the FAT-based file systems into the kernel 787 -- they will have to be modules as well. 788 789config MSDOS_FS 790 tristate "MSDOS fs support" 791 select FAT_FS 792 help 793 This allows you to mount MSDOS partitions of your hard drive (unless 794 they are compressed; to access compressed MSDOS partitions under 795 Linux, you can either use the DOS emulator DOSEMU, described in the 796 DOSEMU-HOWTO, available from 797 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 798 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 799 intend to use dosemu with a non-compressed MSDOS partition, say Y 800 here) and MSDOS floppies. This means that file access becomes 801 transparent, i.e. the MSDOS files look and behave just like all 802 other Unix files. 803 804 If you have Windows 95 or Windows NT installed on your MSDOS 805 partitions, you should use the VFAT file system (say Y to "VFAT fs 806 support" below), or you will not be able to see the long filenames 807 generated by Windows 95 / Windows NT. 808 809 This option will enlarge your kernel by about 7 KB. If unsure, 810 answer Y. This will only work if you said Y to "DOS FAT fs support" 811 as well. To compile this as a module, choose M here: the module will 812 be called msdos. 813 814config VFAT_FS 815 tristate "VFAT (Windows-95) fs support" 816 select FAT_FS 817 help 818 This option provides support for normal Windows file systems with 819 long filenames. That includes non-compressed FAT-based file systems 820 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 821 programs from the mtools package. 822 823 The VFAT support enlarges your kernel by about 10 KB and it only 824 works if you said Y to the "DOS FAT fs support" above. Please read 825 the file <file:Documentation/filesystems/vfat.txt> for details. If 826 unsure, say Y. 827 828 To compile this as a module, choose M here: the module will be called 829 vfat. 830 831config FAT_DEFAULT_CODEPAGE 832 int "Default codepage for FAT" 833 depends on MSDOS_FS || VFAT_FS 834 default 437 835 help 836 This option should be set to the codepage of your FAT filesystems. 837 It can be overridden with the "codepage" mount option. 838 See <file:Documentation/filesystems/vfat.txt> for more information. 839 840config FAT_DEFAULT_IOCHARSET 841 string "Default iocharset for FAT" 842 depends on VFAT_FS 843 default "iso8859-1" 844 help 845 Set this to the default input/output character set you'd 846 like FAT to use. It should probably match the character set 847 that most of your FAT filesystems use, and can be overridden 848 with the "iocharset" mount option for FAT filesystems. 849 Note that "utf8" is not recommended for FAT filesystems. 850 If unsure, you shouldn't set "utf8" here. 851 See <file:Documentation/filesystems/vfat.txt> for more information. 852 853config NTFS_FS 854 tristate "NTFS file system support" 855 select NLS 856 help 857 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 858 859 Saying Y or M here enables read support. There is partial, but 860 safe, write support available. For write support you must also 861 say Y to "NTFS write support" below. 862 863 There are also a number of user-space tools available, called 864 ntfsprogs. These include ntfsundelete and ntfsresize, that work 865 without NTFS support enabled in the kernel. 866 867 This is a rewrite from scratch of Linux NTFS support and replaced 868 the old NTFS code starting with Linux 2.5.11. A backport to 869 the Linux 2.4 kernel series is separately available as a patch 870 from the project web site. 871 872 For more information see <file:Documentation/filesystems/ntfs.txt> 873 and <http://www.linux-ntfs.org/>. 874 875 To compile this file system support as a module, choose M here: the 876 module will be called ntfs. 877 878 If you are not using Windows NT, 2000, XP or 2003 in addition to 879 Linux on your computer it is safe to say N. 880 881config NTFS_DEBUG 882 bool "NTFS debugging support" 883 depends on NTFS_FS 884 help 885 If you are experiencing any problems with the NTFS file system, say 886 Y here. This will result in additional consistency checks to be 887 performed by the driver as well as additional debugging messages to 888 be written to the system log. Note that debugging messages are 889 disabled by default. To enable them, supply the option debug_msgs=1 890 at the kernel command line when booting the kernel or as an option 891 to insmod when loading the ntfs module. Once the driver is active, 892 you can enable debugging messages by doing (as root): 893 echo 1 > /proc/sys/fs/ntfs-debug 894 Replacing the "1" with "0" would disable debug messages. 895 896 If you leave debugging messages disabled, this results in little 897 overhead, but enabling debug messages results in very significant 898 slowdown of the system. 899 900 When reporting bugs, please try to have available a full dump of 901 debugging messages while the misbehaviour was occurring. 902 903config NTFS_RW 904 bool "NTFS write support" 905 depends on NTFS_FS 906 help 907 This enables the partial, but safe, write support in the NTFS driver. 908 909 The only supported operation is overwriting existing files, without 910 changing the file length. No file or directory creation, deletion or 911 renaming is possible. Note only non-resident files can be written to 912 so you may find that some very small files (<500 bytes or so) cannot 913 be written to. 914 915 While we cannot guarantee that it will not damage any data, we have 916 so far not received a single report where the driver would have 917 damaged someones data so we assume it is perfectly safe to use. 918 919 Note: While write support is safe in this version (a rewrite from 920 scratch of the NTFS support), it should be noted that the old NTFS 921 write support, included in Linux 2.5.10 and before (since 1997), 922 is not safe. 923 924 This is currently useful with TopologiLinux. TopologiLinux is run 925 on top of any DOS/Microsoft Windows system without partitioning your 926 hard disk. Unlike other Linux distributions TopologiLinux does not 927 need its own partition. For more information see 928 <http://topologi-linux.sourceforge.net/> 929 930 It is perfectly safe to say N here. 931 932endmenu 933endif # BLOCK 934 935menu "Pseudo filesystems" 936 937source "fs/proc/Kconfig" 938 939config SYSFS 940 bool "sysfs file system support" if EMBEDDED 941 default y 942 help 943 The sysfs filesystem is a virtual filesystem that the kernel uses to 944 export internal kernel objects, their attributes, and their 945 relationships to one another. 946 947 Users can use sysfs to ascertain useful information about the running 948 kernel, such as the devices the kernel has discovered on each bus and 949 which driver each is bound to. sysfs can also be used to tune devices 950 and other kernel subsystems. 951 952 Some system agents rely on the information in sysfs to operate. 953 /sbin/hotplug uses device and object attributes in sysfs to assist in 954 delegating policy decisions, like persistently naming devices. 955 956 sysfs is currently used by the block subsystem to mount the root 957 partition. If sysfs is disabled you must specify the boot device on 958 the kernel boot command line via its major and minor numbers. For 959 example, "root=03:01" for /dev/hda1. 960 961 Designers of embedded systems may wish to say N here to conserve space. 962 963config TMPFS 964 bool "Virtual memory file system support (former shm fs)" 965 help 966 Tmpfs is a file system which keeps all files in virtual memory. 967 968 Everything in tmpfs is temporary in the sense that no files will be 969 created on your hard drive. The files live in memory and swap 970 space. If you unmount a tmpfs instance, everything stored therein is 971 lost. 972 973 See <file:Documentation/filesystems/tmpfs.txt> for details. 974 975config TMPFS_POSIX_ACL 976 bool "Tmpfs POSIX Access Control Lists" 977 depends on TMPFS 978 select GENERIC_ACL 979 help 980 POSIX Access Control Lists (ACLs) support permissions for users and 981 groups beyond the owner/group/world scheme. 982 983 To learn more about Access Control Lists, visit the POSIX ACLs for 984 Linux website <http://acl.bestbits.at/>. 985 986 If you don't know what Access Control Lists are, say N. 987 988config HUGETLBFS 989 bool "HugeTLB file system support" 990 depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \ 991 (S390 && 64BIT) || BROKEN 992 help 993 hugetlbfs is a filesystem backing for HugeTLB pages, based on 994 ramfs. For architectures that support it, say Y here and read 995 <file:Documentation/vm/hugetlbpage.txt> for details. 996 997 If unsure, say N. 998 999config HUGETLB_PAGE 1000 def_bool HUGETLBFS 1001 1002config CONFIGFS_FS 1003 tristate "Userspace-driven configuration filesystem" 1004 depends on SYSFS 1005 help 1006 configfs is a ram-based filesystem that provides the converse 1007 of sysfs's functionality. Where sysfs is a filesystem-based 1008 view of kernel objects, configfs is a filesystem-based manager 1009 of kernel objects, or config_items. 1010 1011 Both sysfs and configfs can and should exist together on the 1012 same system. One is not a replacement for the other. 1013 1014endmenu 1015 1016menu "Miscellaneous filesystems" 1017 1018config ADFS_FS 1019 tristate "ADFS file system support (EXPERIMENTAL)" 1020 depends on BLOCK && EXPERIMENTAL 1021 help 1022 The Acorn Disc Filing System is the standard file system of the 1023 RiscOS operating system which runs on Acorn's ARM-based Risc PC 1024 systems and the Acorn Archimedes range of machines. If you say Y 1025 here, Linux will be able to read from ADFS partitions on hard drives 1026 and from ADFS-formatted floppy discs. If you also want to be able to 1027 write to those devices, say Y to "ADFS write support" below. 1028 1029 The ADFS partition should be the first partition (i.e., 1030 /dev/[hs]d?1) on each of your drives. Please read the file 1031 <file:Documentation/filesystems/adfs.txt> for further details. 1032 1033 To compile this code as a module, choose M here: the module will be 1034 called adfs. 1035 1036 If unsure, say N. 1037 1038config ADFS_FS_RW 1039 bool "ADFS write support (DANGEROUS)" 1040 depends on ADFS_FS 1041 help 1042 If you say Y here, you will be able to write to ADFS partitions on 1043 hard drives and ADFS-formatted floppy disks. This is experimental 1044 codes, so if you're unsure, say N. 1045 1046config AFFS_FS 1047 tristate "Amiga FFS file system support (EXPERIMENTAL)" 1048 depends on BLOCK && EXPERIMENTAL 1049 help 1050 The Fast File System (FFS) is the common file system used on hard 1051 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 1052 if you want to be able to read and write files from and to an Amiga 1053 FFS partition on your hard drive. Amiga floppies however cannot be 1054 read with this driver due to an incompatibility of the floppy 1055 controller used in an Amiga and the standard floppy controller in 1056 PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 1057 and <file:fs/affs/Changes>. 1058 1059 With this driver you can also mount disk files used by Bernd 1060 Schmidt's Un*X Amiga Emulator 1061 (<http://www.freiburg.linux.de/~uae/>). 1062 If you want to do this, you will also need to say Y or M to "Loop 1063 device support", above. 1064 1065 To compile this file system support as a module, choose M here: the 1066 module will be called affs. If unsure, say N. 1067 1068config ECRYPT_FS 1069 tristate "eCrypt filesystem layer support (EXPERIMENTAL)" 1070 depends on EXPERIMENTAL && KEYS && CRYPTO && NET 1071 help 1072 Encrypted filesystem that operates on the VFS layer. See 1073 <file:Documentation/filesystems/ecryptfs.txt> to learn more about 1074 eCryptfs. Userspace components are required and can be 1075 obtained from <http://ecryptfs.sf.net>. 1076 1077 To compile this file system support as a module, choose M here: the 1078 module will be called ecryptfs. 1079 1080config HFS_FS 1081 tristate "Apple Macintosh file system support (EXPERIMENTAL)" 1082 depends on BLOCK && EXPERIMENTAL 1083 select NLS 1084 help 1085 If you say Y here, you will be able to mount Macintosh-formatted 1086 floppy disks and hard drive partitions with full read-write access. 1087 Please read <file:Documentation/filesystems/hfs.txt> to learn about 1088 the available mount options. 1089 1090 To compile this file system support as a module, choose M here: the 1091 module will be called hfs. 1092 1093config HFSPLUS_FS 1094 tristate "Apple Extended HFS file system support" 1095 depends on BLOCK 1096 select NLS 1097 select NLS_UTF8 1098 help 1099 If you say Y here, you will be able to mount extended format 1100 Macintosh-formatted hard drive partitions with full read-write access. 1101 1102 This file system is often called HFS+ and was introduced with 1103 MacOS 8. It includes all Mac specific filesystem data such as 1104 data forks and creator codes, but it also has several UNIX 1105 style features such as file ownership and permissions. 1106 1107config BEFS_FS 1108 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 1109 depends on BLOCK && EXPERIMENTAL 1110 select NLS 1111 help 1112 The BeOS File System (BeFS) is the native file system of Be, Inc's 1113 BeOS. Notable features include support for arbitrary attributes 1114 on files and directories, and database-like indices on selected 1115 attributes. (Also note that this driver doesn't make those features 1116 available at this time). It is a 64 bit filesystem, so it supports 1117 extremely large volumes and files. 1118 1119 If you use this filesystem, you should also say Y to at least one 1120 of the NLS (native language support) options below. 1121 1122 If you don't know what this is about, say N. 1123 1124 To compile this as a module, choose M here: the module will be 1125 called befs. 1126 1127config BEFS_DEBUG 1128 bool "Debug BeFS" 1129 depends on BEFS_FS 1130 help 1131 If you say Y here, you can use the 'debug' mount option to enable 1132 debugging output from the driver. 1133 1134config BFS_FS 1135 tristate "BFS file system support (EXPERIMENTAL)" 1136 depends on BLOCK && EXPERIMENTAL 1137 help 1138 Boot File System (BFS) is a file system used under SCO UnixWare to 1139 allow the bootloader access to the kernel image and other important 1140 files during the boot process. It is usually mounted under /stand 1141 and corresponds to the slice marked as "STAND" in the UnixWare 1142 partition. You should say Y if you want to read or write the files 1143 on your /stand slice from within Linux. You then also need to say Y 1144 to "UnixWare slices support", below. More information about the BFS 1145 file system is contained in the file 1146 <file:Documentation/filesystems/bfs.txt>. 1147 1148 If you don't know what this is about, say N. 1149 1150 To compile this as a module, choose M here: the module will be called 1151 bfs. Note that the file system of your root partition (the one 1152 containing the directory /) cannot be compiled as a module. 1153 1154 1155 1156config EFS_FS 1157 tristate "EFS file system support (read only) (EXPERIMENTAL)" 1158 depends on BLOCK && EXPERIMENTAL 1159 help 1160 EFS is an older file system used for non-ISO9660 CD-ROMs and hard 1161 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 1162 uses the XFS file system for hard disk partitions however). 1163 1164 This implementation only offers read-only access. If you don't know 1165 what all this is about, it's safe to say N. For more information 1166 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 1167 1168 To compile the EFS file system support as a module, choose M here: the 1169 module will be called efs. 1170 1171config JFFS2_FS 1172 tristate "Journalling Flash File System v2 (JFFS2) support" 1173 select CRC32 1174 depends on MTD 1175 help 1176 JFFS2 is the second generation of the Journalling Flash File System 1177 for use on diskless embedded devices. It provides improved wear 1178 levelling, compression and support for hard links. You cannot use 1179 this on normal block devices, only on 'MTD' devices. 1180 1181 Further information on the design and implementation of JFFS2 is 1182 available at <http://sources.redhat.com/jffs2/>. 1183 1184config JFFS2_FS_DEBUG 1185 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 1186 depends on JFFS2_FS 1187 default "0" 1188 help 1189 This controls the amount of debugging messages produced by the JFFS2 1190 code. Set it to zero for use in production systems. For evaluation, 1191 testing and debugging, it's advisable to set it to one. This will 1192 enable a few assertions and will print debugging messages at the 1193 KERN_DEBUG loglevel, where they won't normally be visible. Level 2 1194 is unlikely to be useful - it enables extra debugging in certain 1195 areas which at one point needed debugging, but when the bugs were 1196 located and fixed, the detailed messages were relegated to level 2. 1197 1198 If reporting bugs, please try to have available a full dump of the 1199 messages at debug level 1 while the misbehaviour was occurring. 1200 1201config JFFS2_FS_WRITEBUFFER 1202 bool "JFFS2 write-buffering support" 1203 depends on JFFS2_FS 1204 default y 1205 help 1206 This enables the write-buffering support in JFFS2. 1207 1208 This functionality is required to support JFFS2 on the following 1209 types of flash devices: 1210 - NAND flash 1211 - NOR flash with transparent ECC 1212 - DataFlash 1213 1214config JFFS2_FS_WBUF_VERIFY 1215 bool "Verify JFFS2 write-buffer reads" 1216 depends on JFFS2_FS_WRITEBUFFER 1217 default n 1218 help 1219 This causes JFFS2 to read back every page written through the 1220 write-buffer, and check for errors. 1221 1222config JFFS2_SUMMARY 1223 bool "JFFS2 summary support (EXPERIMENTAL)" 1224 depends on JFFS2_FS && EXPERIMENTAL 1225 default n 1226 help 1227 This feature makes it possible to use summary information 1228 for faster filesystem mount. 1229 1230 The summary information can be inserted into a filesystem image 1231 by the utility 'sumtool'. 1232 1233 If unsure, say 'N'. 1234 1235config JFFS2_FS_XATTR 1236 bool "JFFS2 XATTR support (EXPERIMENTAL)" 1237 depends on JFFS2_FS && EXPERIMENTAL 1238 default n 1239 help 1240 Extended attributes are name:value pairs associated with inodes by 1241 the kernel or by users (see the attr(5) manual page, or visit 1242 <http://acl.bestbits.at/> for details). 1243 1244 If unsure, say N. 1245 1246config JFFS2_FS_POSIX_ACL 1247 bool "JFFS2 POSIX Access Control Lists" 1248 depends on JFFS2_FS_XATTR 1249 default y 1250 select FS_POSIX_ACL 1251 help 1252 Posix Access Control Lists (ACLs) support permissions for users and 1253 groups beyond the owner/group/world scheme. 1254 1255 To learn more about Access Control Lists, visit the Posix ACLs for 1256 Linux website <http://acl.bestbits.at/>. 1257 1258 If you don't know what Access Control Lists are, say N 1259 1260config JFFS2_FS_SECURITY 1261 bool "JFFS2 Security Labels" 1262 depends on JFFS2_FS_XATTR 1263 default y 1264 help 1265 Security labels support alternative access control models 1266 implemented by security modules like SELinux. This option 1267 enables an extended attribute handler for file security 1268 labels in the jffs2 filesystem. 1269 1270 If you are not using a security module that requires using 1271 extended attributes for file security labels, say N. 1272 1273config JFFS2_COMPRESSION_OPTIONS 1274 bool "Advanced compression options for JFFS2" 1275 depends on JFFS2_FS 1276 default n 1277 help 1278 Enabling this option allows you to explicitly choose which 1279 compression modules, if any, are enabled in JFFS2. Removing 1280 compressors can mean you cannot read existing file systems, 1281 and enabling experimental compressors can mean that you 1282 write a file system which cannot be read by a standard kernel. 1283 1284 If unsure, you should _definitely_ say 'N'. 1285 1286config JFFS2_ZLIB 1287 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 1288 select ZLIB_INFLATE 1289 select ZLIB_DEFLATE 1290 depends on JFFS2_FS 1291 default y 1292 help 1293 Zlib is designed to be a free, general-purpose, legally unencumbered, 1294 lossless data-compression library for use on virtually any computer 1295 hardware and operating system. See <http://www.gzip.org/zlib/> for 1296 further information. 1297 1298 Say 'Y' if unsure. 1299 1300config JFFS2_LZO 1301 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS 1302 select LZO_COMPRESS 1303 select LZO_DECOMPRESS 1304 depends on JFFS2_FS 1305 default n 1306 help 1307 minilzo-based compression. Generally works better than Zlib. 1308 1309 This feature was added in July, 2007. Say 'N' if you need 1310 compatibility with older bootloaders or kernels. 1311 1312config JFFS2_RTIME 1313 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 1314 depends on JFFS2_FS 1315 default y 1316 help 1317 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 1318 1319config JFFS2_RUBIN 1320 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 1321 depends on JFFS2_FS 1322 default n 1323 help 1324 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 1325 1326choice 1327 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 1328 default JFFS2_CMODE_PRIORITY 1329 depends on JFFS2_FS 1330 help 1331 You can set here the default compression mode of JFFS2 from 1332 the available compression modes. Don't touch if unsure. 1333 1334config JFFS2_CMODE_NONE 1335 bool "no compression" 1336 help 1337 Uses no compression. 1338 1339config JFFS2_CMODE_PRIORITY 1340 bool "priority" 1341 help 1342 Tries the compressors in a predefined order and chooses the first 1343 successful one. 1344 1345config JFFS2_CMODE_SIZE 1346 bool "size (EXPERIMENTAL)" 1347 help 1348 Tries all compressors and chooses the one which has the smallest 1349 result. 1350 1351config JFFS2_CMODE_FAVOURLZO 1352 bool "Favour LZO" 1353 help 1354 Tries all compressors and chooses the one which has the smallest 1355 result but gives some preference to LZO (which has faster 1356 decompression) at the expense of size. 1357 1358endchoice 1359 1360# UBIFS File system configuration 1361source "fs/ubifs/Kconfig" 1362 1363config CRAMFS 1364 tristate "Compressed ROM file system support (cramfs)" 1365 depends on BLOCK 1366 select ZLIB_INFLATE 1367 help 1368 Saying Y here includes support for CramFs (Compressed ROM File 1369 System). CramFs is designed to be a simple, small, and compressed 1370 file system for ROM based embedded systems. CramFs is read-only, 1371 limited to 256MB file systems (with 16MB files), and doesn't support 1372 16/32 bits uid/gid, hard links and timestamps. 1373 1374 See <file:Documentation/filesystems/cramfs.txt> and 1375 <file:fs/cramfs/README> for further information. 1376 1377 To compile this as a module, choose M here: the module will be called 1378 cramfs. Note that the root file system (the one containing the 1379 directory /) cannot be compiled as a module. 1380 1381 If unsure, say N. 1382 1383config VXFS_FS 1384 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 1385 depends on BLOCK 1386 help 1387 FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 1388 file system format. VERITAS VxFS(TM) is the standard file system 1389 of SCO UnixWare (and possibly others) and optionally available 1390 for Sunsoft Solaris, HP-UX and many other operating systems. 1391 Currently only readonly access is supported. 1392 1393 NOTE: the file system type as used by mount(1), mount(2) and 1394 fstab(5) is 'vxfs' as it describes the file system format, not 1395 the actual driver. 1396 1397 To compile this as a module, choose M here: the module will be 1398 called freevxfs. If unsure, say N. 1399 1400config MINIX_FS 1401 tristate "Minix file system support" 1402 depends on BLOCK 1403 help 1404 Minix is a simple operating system used in many classes about OS's. 1405 The minix file system (method to organize files on a hard disk 1406 partition or a floppy disk) was the original file system for Linux, 1407 but has been superseded by the second extended file system ext2fs. 1408 You don't want to use the minix file system on your hard disk 1409 because of certain built-in restrictions, but it is sometimes found 1410 on older Linux floppy disks. This option will enlarge your kernel 1411 by about 28 KB. If unsure, say N. 1412 1413 To compile this file system support as a module, choose M here: the 1414 module will be called minix. Note that the file system of your root 1415 partition (the one containing the directory /) cannot be compiled as 1416 a module. 1417 1418config OMFS_FS 1419 tristate "SonicBlue Optimized MPEG File System support" 1420 depends on BLOCK 1421 select CRC_ITU_T 1422 help 1423 This is the proprietary file system used by the Rio Karma music 1424 player and ReplayTV DVR. Despite the name, this filesystem is not 1425 more efficient than a standard FS for MPEG files, in fact likely 1426 the opposite is true. Say Y if you have either of these devices 1427 and wish to mount its disk. 1428 1429 To compile this file system support as a module, choose M here: the 1430 module will be called omfs. If unsure, say N. 1431 1432config HPFS_FS 1433 tristate "OS/2 HPFS file system support" 1434 depends on BLOCK 1435 help 1436 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1437 is the file system used for organizing files on OS/2 hard disk 1438 partitions. Say Y if you want to be able to read files from and 1439 write files to an OS/2 HPFS partition on your hard drive. OS/2 1440 floppies however are in regular MSDOS format, so you don't need this 1441 option in order to be able to read them. Read 1442 <file:Documentation/filesystems/hpfs.txt>. 1443 1444 To compile this file system support as a module, choose M here: the 1445 module will be called hpfs. If unsure, say N. 1446 1447 1448config QNX4FS_FS 1449 tristate "QNX4 file system support (read only)" 1450 depends on BLOCK 1451 help 1452 This is the file system used by the real-time operating systems 1453 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1454 Further information is available at <http://www.qnx.com/>. 1455 Say Y if you intend to mount QNX hard disks or floppies. 1456 Unless you say Y to "QNX4FS read-write support" below, you will 1457 only be able to read these file systems. 1458 1459 To compile this file system support as a module, choose M here: the 1460 module will be called qnx4. 1461 1462 If you don't know whether you need it, then you don't need it: 1463 answer N. 1464 1465config QNX4FS_RW 1466 bool "QNX4FS write support (DANGEROUS)" 1467 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 1468 help 1469 Say Y if you want to test write support for QNX4 file systems. 1470 1471 It's currently broken, so for now: 1472 answer N. 1473 1474config ROMFS_FS 1475 tristate "ROM file system support" 1476 depends on BLOCK 1477 ---help--- 1478 This is a very small read-only file system mainly intended for 1479 initial ram disks of installation disks, but it could be used for 1480 other read-only media as well. Read 1481 <file:Documentation/filesystems/romfs.txt> for details. 1482 1483 To compile this file system support as a module, choose M here: the 1484 module will be called romfs. Note that the file system of your 1485 root partition (the one containing the directory /) cannot be a 1486 module. 1487 1488 If you don't know whether you need it, then you don't need it: 1489 answer N. 1490 1491 1492config SYSV_FS 1493 tristate "System V/Xenix/V7/Coherent file system support" 1494 depends on BLOCK 1495 help 1496 SCO, Xenix and Coherent are commercial Unix systems for Intel 1497 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1498 here would allow you to read from their floppies and hard disk 1499 partitions. 1500 1501 If you have floppies or hard disk partitions like that, it is likely 1502 that they contain binaries from those other Unix systems; in order 1503 to run these binaries, you will want to install linux-abi which is 1504 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1505 UnixWare, Dell Unix and System V programs under Linux. It is 1506 available via FTP (user: ftp) from 1507 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1508 NOTE: that will work only for binaries from Intel-based systems; 1509 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1510 1511 If you only intend to mount files from some other Unix over the 1512 network using NFS, you don't need the System V file system support 1513 (but you need NFS file system support obviously). 1514 1515 Note that this option is generally not needed for floppies, since a 1516 good portable way to transport files and directories between unixes 1517 (and even other operating systems) is given by the tar program ("man 1518 tar" or preferably "info tar"). Note also that this option has 1519 nothing whatsoever to do with the option "System V IPC". Read about 1520 the System V file system in 1521 <file:Documentation/filesystems/sysv-fs.txt>. 1522 Saying Y here will enlarge your kernel by about 27 KB. 1523 1524 To compile this as a module, choose M here: the module will be called 1525 sysv. 1526 1527 If you haven't heard about all of this before, it's safe to say N. 1528 1529 1530config UFS_FS 1531 tristate "UFS file system support (read only)" 1532 depends on BLOCK 1533 help 1534 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1535 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1536 Unixes can create and mount hard disk partitions and diskettes using 1537 this file system as well. Saying Y here will allow you to read from 1538 these partitions; if you also want to write to them, say Y to the 1539 experimental "UFS file system write support", below. Please read the 1540 file <file:Documentation/filesystems/ufs.txt> for more information. 1541 1542 The recently released UFS2 variant (used in FreeBSD 5.x) is 1543 READ-ONLY supported. 1544 1545 Note that this option is generally not needed for floppies, since a 1546 good portable way to transport files and directories between unixes 1547 (and even other operating systems) is given by the tar program ("man 1548 tar" or preferably "info tar"). 1549 1550 When accessing NeXTstep files, you may need to convert them from the 1551 NeXT character set to the Latin1 character set; use the program 1552 recode ("info recode") for this purpose. 1553 1554 To compile the UFS file system support as a module, choose M here: the 1555 module will be called ufs. 1556 1557 If you haven't heard about all of this before, it's safe to say N. 1558 1559config UFS_FS_WRITE 1560 bool "UFS file system write support (DANGEROUS)" 1561 depends on UFS_FS && EXPERIMENTAL 1562 help 1563 Say Y here if you want to try writing to UFS partitions. This is 1564 experimental, so you should back up your UFS partitions beforehand. 1565 1566config UFS_DEBUG 1567 bool "UFS debugging" 1568 depends on UFS_FS 1569 help 1570 If you are experiencing any problems with the UFS filesystem, say 1571 Y here. This will result in _many_ additional debugging messages to be 1572 written to the system log. 1573 1574endmenu 1575 1576menuconfig NETWORK_FILESYSTEMS 1577 bool "Network File Systems" 1578 default y 1579 depends on NET 1580 ---help--- 1581 Say Y here to get to see options for network filesystems and 1582 filesystem-related networking code, such as NFS daemon and 1583 RPCSEC security modules. 1584 1585 This option alone does not add any kernel code. 1586 1587 If you say N, all options in this submenu will be skipped and 1588 disabled; if unsure, say Y here. 1589 1590if NETWORK_FILESYSTEMS 1591 1592config NFS_FS 1593 tristate "NFS client support" 1594 depends on INET 1595 select LOCKD 1596 select SUNRPC 1597 select NFS_ACL_SUPPORT if NFS_V3_ACL 1598 help 1599 Choose Y here if you want to access files residing on other 1600 computers using Sun's Network File System protocol. To compile 1601 this file system support as a module, choose M here: the module 1602 will be called nfs. 1603 1604 To mount file systems exported by NFS servers, you also need to 1605 install the user space mount.nfs command which can be found in 1606 the Linux nfs-utils package, available from http://linux-nfs.org/. 1607 Information about using the mount command is available in the 1608 mount(8) man page. More detail about the Linux NFS client 1609 implementation is available via the nfs(5) man page. 1610 1611 Below you can choose which versions of the NFS protocol are 1612 available in the kernel to mount NFS servers. Support for NFS 1613 version 2 (RFC 1094) is always available when NFS_FS is selected. 1614 1615 To configure a system which mounts its root file system via NFS 1616 at boot time, say Y here, select "Kernel level IP 1617 autoconfiguration" in the NETWORK menu, and select "Root file 1618 system on NFS" below. You cannot compile this file system as a 1619 module in this case. 1620 1621 If unsure, say N. 1622 1623config NFS_V3 1624 bool "NFS client support for NFS version 3" 1625 depends on NFS_FS 1626 help 1627 This option enables support for version 3 of the NFS protocol 1628 (RFC 1813) in the kernel's NFS client. 1629 1630 If unsure, say Y. 1631 1632config NFS_V3_ACL 1633 bool "NFS client support for the NFSv3 ACL protocol extension" 1634 depends on NFS_V3 1635 help 1636 Some NFS servers support an auxiliary NFSv3 ACL protocol that 1637 Sun added to Solaris but never became an official part of the 1638 NFS version 3 protocol. This protocol extension allows 1639 applications on NFS clients to manipulate POSIX Access Control 1640 Lists on files residing on NFS servers. NFS servers enforce 1641 ACLs on local files whether this protocol is available or not. 1642 1643 Choose Y here if your NFS server supports the Solaris NFSv3 ACL 1644 protocol extension and you want your NFS client to allow 1645 applications to access and modify ACLs on files on the server. 1646 1647 Most NFS servers don't support the Solaris NFSv3 ACL protocol 1648 extension. You can choose N here or specify the "noacl" mount 1649 option to prevent your NFS client from trying to use the NFSv3 1650 ACL protocol. 1651 1652 If unsure, say N. 1653 1654config NFS_V4 1655 bool "NFS client support for NFS version 4 (EXPERIMENTAL)" 1656 depends on NFS_FS && EXPERIMENTAL 1657 select RPCSEC_GSS_KRB5 1658 help 1659 This option enables support for version 4 of the NFS protocol 1660 (RFC 3530) in the kernel's NFS client. 1661 1662 To mount NFS servers using NFSv4, you also need to install user 1663 space programs which can be found in the Linux nfs-utils package, 1664 available from http://linux-nfs.org/. 1665 1666 If unsure, say N. 1667 1668config ROOT_NFS 1669 bool "Root file system on NFS" 1670 depends on NFS_FS=y && IP_PNP 1671 help 1672 If you want your system to mount its root file system via NFS, 1673 choose Y here. This is common practice for managing systems 1674 without local permanent storage. For details, read 1675 <file:Documentation/filesystems/nfsroot.txt>. 1676 1677 Most people say N here. 1678 1679config NFSD 1680 tristate "NFS server support" 1681 depends on INET 1682 select LOCKD 1683 select SUNRPC 1684 select EXPORTFS 1685 select NFS_ACL_SUPPORT if NFSD_V2_ACL 1686 help 1687 Choose Y here if you want to allow other computers to access 1688 files residing on this system using Sun's Network File System 1689 protocol. To compile the NFS server support as a module, 1690 choose M here: the module will be called nfsd. 1691 1692 You may choose to use a user-space NFS server instead, in which 1693 case you can choose N here. 1694 1695 To export local file systems using NFS, you also need to install 1696 user space programs which can be found in the Linux nfs-utils 1697 package, available from http://linux-nfs.org/. More detail about 1698 the Linux NFS server implementation is available via the 1699 exports(5) man page. 1700 1701 Below you can choose which versions of the NFS protocol are 1702 available to clients mounting the NFS server on this system. 1703 Support for NFS version 2 (RFC 1094) is always available when 1704 CONFIG_NFSD is selected. 1705 1706 If unsure, say N. 1707 1708config NFSD_V2_ACL 1709 bool 1710 depends on NFSD 1711 1712config NFSD_V3 1713 bool "NFS server support for NFS version 3" 1714 depends on NFSD 1715 help 1716 This option enables support in your system's NFS server for 1717 version 3 of the NFS protocol (RFC 1813). 1718 1719 If unsure, say Y. 1720 1721config NFSD_V3_ACL 1722 bool "NFS server support for the NFSv3 ACL protocol extension" 1723 depends on NFSD_V3 1724 select NFSD_V2_ACL 1725 help 1726 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that 1727 never became an official part of the NFS version 3 protocol. 1728 This protocol extension allows applications on NFS clients to 1729 manipulate POSIX Access Control Lists on files residing on NFS 1730 servers. NFS servers enforce POSIX ACLs on local files whether 1731 this protocol is available or not. 1732 1733 This option enables support in your system's NFS server for the 1734 NFSv3 ACL protocol extension allowing NFS clients to manipulate 1735 POSIX ACLs on files exported by your system's NFS server. NFS 1736 clients which support the Solaris NFSv3 ACL protocol can then 1737 access and modify ACLs on your NFS server. 1738 1739 To store ACLs on your NFS server, you also need to enable ACL- 1740 related CONFIG options for your local file systems of choice. 1741 1742 If unsure, say N. 1743 1744config NFSD_V4 1745 bool "NFS server support for NFS version 4 (EXPERIMENTAL)" 1746 depends on NFSD && PROC_FS && EXPERIMENTAL 1747 select NFSD_V3 1748 select FS_POSIX_ACL 1749 select RPCSEC_GSS_KRB5 1750 help 1751 This option enables support in your system's NFS server for 1752 version 4 of the NFS protocol (RFC 3530). 1753 1754 To export files using NFSv4, you need to install additional user 1755 space programs which can be found in the Linux nfs-utils package, 1756 available from http://linux-nfs.org/. 1757 1758 If unsure, say N. 1759 1760config LOCKD 1761 tristate 1762 1763config LOCKD_V4 1764 bool 1765 depends on NFSD_V3 || NFS_V3 1766 default y 1767 1768config EXPORTFS 1769 tristate 1770 1771config NFS_ACL_SUPPORT 1772 tristate 1773 select FS_POSIX_ACL 1774 1775config NFS_COMMON 1776 bool 1777 depends on NFSD || NFS_FS 1778 default y 1779 1780config SUNRPC 1781 tristate 1782 1783config SUNRPC_GSS 1784 tristate 1785 1786config SUNRPC_XPRT_RDMA 1787 tristate 1788 depends on SUNRPC && INFINIBAND && EXPERIMENTAL 1789 default SUNRPC && INFINIBAND 1790 help 1791 This option enables an RPC client transport capability that 1792 allows the NFS client to mount servers via an RDMA-enabled 1793 transport. 1794 1795 To compile RPC client RDMA transport support as a module, 1796 choose M here: the module will be called xprtrdma. 1797 1798 If unsure, say N. 1799 1800config SUNRPC_REGISTER_V4 1801 bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)" 1802 depends on SUNRPC && EXPERIMENTAL 1803 default n 1804 help 1805 Sun added support for registering RPC services at an IPv6 1806 address by creating two new versions of the rpcbind protocol 1807 (RFC 1833). 1808 1809 This option enables support in the kernel RPC server for 1810 registering kernel RPC services via version 4 of the rpcbind 1811 protocol. If you enable this option, you must run a portmapper 1812 daemon that supports rpcbind protocol version 4. 1813 1814 Serving NFS over IPv6 from knfsd (the kernel's NFS server) 1815 requires that you enable this option and use a portmapper that 1816 supports rpcbind version 4. 1817 1818 If unsure, say N to get traditional behavior (register kernel 1819 RPC services using only rpcbind version 2). Distributions 1820 using the legacy Linux portmapper daemon must say N here. 1821 1822config RPCSEC_GSS_KRB5 1823 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1824 depends on SUNRPC && EXPERIMENTAL 1825 select SUNRPC_GSS 1826 select CRYPTO 1827 select CRYPTO_MD5 1828 select CRYPTO_DES 1829 select CRYPTO_CBC 1830 help 1831 Choose Y here to enable Secure RPC using the Kerberos version 5 1832 GSS-API mechanism (RFC 1964). 1833 1834 Secure RPC calls with Kerberos require an auxiliary user-space 1835 daemon which may be found in the Linux nfs-utils package 1836 available from http://linux-nfs.org/. In addition, user-space 1837 Kerberos support should be installed. 1838 1839 If unsure, say N. 1840 1841config RPCSEC_GSS_SPKM3 1842 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 1843 depends on SUNRPC && EXPERIMENTAL 1844 select SUNRPC_GSS 1845 select CRYPTO 1846 select CRYPTO_MD5 1847 select CRYPTO_DES 1848 select CRYPTO_CAST5 1849 select CRYPTO_CBC 1850 help 1851 Choose Y here to enable Secure RPC using the SPKM3 public key 1852 GSS-API mechansim (RFC 2025). 1853 1854 Secure RPC calls with SPKM3 require an auxiliary userspace 1855 daemon which may be found in the Linux nfs-utils package 1856 available from http://linux-nfs.org/. 1857 1858 If unsure, say N. 1859 1860config SMB_FS 1861 tristate "SMB file system support (OBSOLETE, please use CIFS)" 1862 depends on INET 1863 select NLS 1864 help 1865 SMB (Server Message Block) is the protocol Windows for Workgroups 1866 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1867 files and printers over local networks. Saying Y here allows you to 1868 mount their file systems (often called "shares" in this context) and 1869 access them just like any other Unix directory. Currently, this 1870 works only if the Windows machines use TCP/IP as the underlying 1871 transport protocol, and not NetBEUI. For details, read 1872 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1873 available from <http://www.tldp.org/docs.html#howto>. 1874 1875 Note: if you just want your box to act as an SMB *server* and make 1876 files and printing services available to Windows clients (which need 1877 to have a TCP/IP stack), you don't need to say Y here; you can use 1878 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1879 for that. 1880 1881 General information about how to connect Linux, Windows machines and 1882 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1883 1884 To compile the SMB support as a module, choose M here: 1885 the module will be called smbfs. Most people say N, however. 1886 1887config SMB_NLS_DEFAULT 1888 bool "Use a default NLS" 1889 depends on SMB_FS 1890 help 1891 Enabling this will make smbfs use nls translations by default. You 1892 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1893 settings and you need to give the default nls for the SMB server as 1894 CONFIG_SMB_NLS_REMOTE. 1895 1896 The nls settings can be changed at mount time, if your smbmount 1897 supports that, using the codepage and iocharset parameters. 1898 1899 smbmount from samba 2.2.0 or later supports this. 1900 1901config SMB_NLS_REMOTE 1902 string "Default Remote NLS Option" 1903 depends on SMB_NLS_DEFAULT 1904 default "cp437" 1905 help 1906 This setting allows you to specify a default value for which 1907 codepage the server uses. If this field is left blank no 1908 translations will be done by default. The local codepage/charset 1909 default to CONFIG_NLS_DEFAULT. 1910 1911 The nls settings can be changed at mount time, if your smbmount 1912 supports that, using the codepage and iocharset parameters. 1913 1914 smbmount from samba 2.2.0 or later supports this. 1915 1916config CIFS 1917 tristate "CIFS support (advanced network filesystem, SMBFS successor)" 1918 depends on INET 1919 select NLS 1920 help 1921 This is the client VFS module for the Common Internet File System 1922 (CIFS) protocol which is the successor to the Server Message Block 1923 (SMB) protocol, the native file sharing mechanism for most early 1924 PC operating systems. The CIFS protocol is fully supported by 1925 file servers such as Windows 2000 (including Windows 2003, NT 4 1926 and Windows XP) as well by Samba (which provides excellent CIFS 1927 server support for Linux and many other operating systems). Limited 1928 support for OS/2 and Windows ME and similar servers is provided as 1929 well. 1930 1931 The cifs module provides an advanced network file system 1932 client for mounting to CIFS compliant servers. It includes 1933 support for DFS (hierarchical name space), secure per-user 1934 session establishment via Kerberos or NTLM or NTLMv2, 1935 safe distributed caching (oplock), optional packet 1936 signing, Unicode and other internationalization improvements. 1937 If you need to mount to Samba or Windows from this machine, say Y. 1938 1939config CIFS_STATS 1940 bool "CIFS statistics" 1941 depends on CIFS 1942 help 1943 Enabling this option will cause statistics for each server share 1944 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 1945 1946config CIFS_STATS2 1947 bool "Extended statistics" 1948 depends on CIFS_STATS 1949 help 1950 Enabling this option will allow more detailed statistics on SMB 1951 request timing to be displayed in /proc/fs/cifs/DebugData and also 1952 allow optional logging of slow responses to dmesg (depending on the 1953 value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1954 These additional statistics may have a minor effect on performance 1955 and memory utilization. 1956 1957 Unless you are a developer or are doing network performance analysis 1958 or tuning, say N. 1959 1960config CIFS_WEAK_PW_HASH 1961 bool "Support legacy servers which use weaker LANMAN security" 1962 depends on CIFS 1963 help 1964 Modern CIFS servers including Samba and most Windows versions 1965 (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 1966 security mechanisms. These hash the password more securely 1967 than the mechanisms used in the older LANMAN version of the 1968 SMB protocol but LANMAN based authentication is needed to 1969 establish sessions with some old SMB servers. 1970 1971 Enabling this option allows the cifs module to mount to older 1972 LANMAN based servers such as OS/2 and Windows 95, but such 1973 mounts may be less secure than mounts using NTLM or more recent 1974 security mechanisms if you are on a public network. Unless you 1975 have a need to access old SMB servers (and are on a private 1976 network) you probably want to say N. Even if this support 1977 is enabled in the kernel build, LANMAN authentication will not be 1978 used automatically. At runtime LANMAN mounts are disabled but 1979 can be set to required (or optional) either in 1980 /proc/fs/cifs (see fs/cifs/README for more detail) or via an 1981 option on the mount command. This support is disabled by 1982 default in order to reduce the possibility of a downgrade 1983 attack. 1984 1985 If unsure, say N. 1986 1987config CIFS_UPCALL 1988 bool "Kerberos/SPNEGO advanced session setup" 1989 depends on CIFS && KEYS 1990 help 1991 Enables an upcall mechanism for CIFS which accesses 1992 userspace helper utilities to provide SPNEGO packaged (RFC 4178) 1993 Kerberos tickets which are needed to mount to certain secure servers 1994 (for which more secure Kerberos authentication is required). If 1995 unsure, say N. 1996 1997config CIFS_XATTR 1998 bool "CIFS extended attributes" 1999 depends on CIFS 2000 help 2001 Extended attributes are name:value pairs associated with inodes by 2002 the kernel or by users (see the attr(5) manual page, or visit 2003 <http://acl.bestbits.at/> for details). CIFS maps the name of 2004 extended attributes beginning with the user namespace prefix 2005 to SMB/CIFS EAs. EAs are stored on Windows servers without the 2006 user namespace prefix, but their names are seen by Linux cifs clients 2007 prefaced by the user namespace prefix. The system namespace 2008 (used by some filesystems to store ACLs) is not supported at 2009 this time. 2010 2011 If unsure, say N. 2012 2013config CIFS_POSIX 2014 bool "CIFS POSIX Extensions" 2015 depends on CIFS_XATTR 2016 help 2017 Enabling this option will cause the cifs client to attempt to 2018 negotiate a newer dialect with servers, such as Samba 3.0.5 2019 or later, that optionally can handle more POSIX like (rather 2020 than Windows like) file behavior. It also enables 2021 support for POSIX ACLs (getfacl and setfacl) to servers 2022 (such as Samba 3.10 and later) which can negotiate 2023 CIFS POSIX ACL support. If unsure, say N. 2024 2025config CIFS_DEBUG2 2026 bool "Enable additional CIFS debugging routines" 2027 depends on CIFS 2028 help 2029 Enabling this option adds a few more debugging routines 2030 to the cifs code which slightly increases the size of 2031 the cifs module and can cause additional logging of debug 2032 messages in some error paths, slowing performance. This 2033 option can be turned off unless you are debugging 2034 cifs problems. If unsure, say N. 2035 2036config CIFS_EXPERIMENTAL 2037 bool "CIFS Experimental Features (EXPERIMENTAL)" 2038 depends on CIFS && EXPERIMENTAL 2039 help 2040 Enables cifs features under testing. These features are 2041 experimental and currently include DFS support and directory 2042 change notification ie fcntl(F_DNOTIFY), as well as the upcall 2043 mechanism which will be used for Kerberos session negotiation 2044 and uid remapping. Some of these features also may depend on 2045 setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 2046 (which is disabled by default). See the file fs/cifs/README 2047 for more details. If unsure, say N. 2048 2049config CIFS_DFS_UPCALL 2050 bool "DFS feature support (EXPERIMENTAL)" 2051 depends on CIFS_EXPERIMENTAL 2052 depends on KEYS 2053 help 2054 Enables an upcall mechanism for CIFS which contacts userspace 2055 helper utilities to provide server name resolution (host names to 2056 IP addresses) which is needed for implicit mounts of DFS junction 2057 points. If unsure, say N. 2058 2059config NCP_FS 2060 tristate "NCP file system support (to mount NetWare volumes)" 2061 depends on IPX!=n || INET 2062 help 2063 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 2064 used by Novell NetWare clients to talk to file servers. It is to 2065 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 2066 to mount NetWare file server volumes and to access them just like 2067 any other Unix directory. For details, please read the file 2068 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 2069 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 2070 2071 You do not have to say Y here if you want your Linux box to act as a 2072 file *server* for Novell NetWare clients. 2073 2074 General information about how to connect Linux, Windows machines and 2075 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 2076 2077 To compile this as a module, choose M here: the module will be called 2078 ncpfs. Say N unless you are connected to a Novell network. 2079 2080source "fs/ncpfs/Kconfig" 2081 2082config CODA_FS 2083 tristate "Coda file system support (advanced network fs)" 2084 depends on INET 2085 help 2086 Coda is an advanced network file system, similar to NFS in that it 2087 enables you to mount file systems of a remote server and access them 2088 with regular Unix commands as if they were sitting on your hard 2089 disk. Coda has several advantages over NFS: support for 2090 disconnected operation (e.g. for laptops), read/write server 2091 replication, security model for authentication and encryption, 2092 persistent client caches and write back caching. 2093 2094 If you say Y here, your Linux box will be able to act as a Coda 2095 *client*. You will need user level code as well, both for the 2096 client and server. Servers are currently user level, i.e. they need 2097 no kernel support. Please read 2098 <file:Documentation/filesystems/coda.txt> and check out the Coda 2099 home page <http://www.coda.cs.cmu.edu/>. 2100 2101 To compile the coda client support as a module, choose M here: the 2102 module will be called coda. 2103 2104config AFS_FS 2105 tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 2106 depends on INET && EXPERIMENTAL 2107 select AF_RXRPC 2108 help 2109 If you say Y here, you will get an experimental Andrew File System 2110 driver. It currently only supports unsecured read-only AFS access. 2111 2112 See <file:Documentation/filesystems/afs.txt> for more information. 2113 2114 If unsure, say N. 2115 2116config AFS_DEBUG 2117 bool "AFS dynamic debugging" 2118 depends on AFS_FS 2119 help 2120 Say Y here to make runtime controllable debugging messages appear. 2121 2122 See <file:Documentation/filesystems/afs.txt> for more information. 2123 2124 If unsure, say N. 2125 2126config 9P_FS 2127 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2128 depends on INET && NET_9P && EXPERIMENTAL 2129 help 2130 If you say Y here, you will get experimental support for 2131 Plan 9 resource sharing via the 9P2000 protocol. 2132 2133 See <http://v9fs.sf.net> for more information. 2134 2135 If unsure, say N. 2136 2137endif # NETWORK_FILESYSTEMS 2138 2139if BLOCK 2140menu "Partition Types" 2141 2142source "fs/partitions/Kconfig" 2143 2144endmenu 2145endif 2146 2147source "fs/nls/Kconfig" 2148source "fs/dlm/Kconfig" 2149 2150endmenu 2151