1# 2# File system configuration 3# 4 5menu "File systems" 6 7config EXT2_FS 8 tristate "Second extended fs support" 9 help 10 Ext2 is a standard Linux file system for hard disks. 11 12 To compile this file system support as a module, choose M here: the 13 module will be called ext2. Be aware however that the file system 14 of your root partition (the one containing the directory /) cannot 15 be compiled as a module, and so this could be dangerous. 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 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 help 74 This is the journaling version of the Second extended file system 75 (often called ext3), the de facto standard Linux file system 76 (method to organize files on a storage device) for hard disks. 77 78 The journaling code included in this driver means you do not have 79 to run e2fsck (file system checker) on your file systems after a 80 crash. The journal keeps track of any changes that were being made 81 at the time the system crashed, and can ensure that your file system 82 is consistent without the need for a lengthy check. 83 84 Other than adding the journal to the file system, the on-disk format 85 of ext3 is identical to ext2. It is possible to freely switch 86 between using the ext3 driver and the ext2 driver, as long as the 87 file system has been cleanly unmounted, or e2fsck is run on the file 88 system. 89 90 To add a journal on an existing ext2 file system or change the 91 behavior of ext3 file systems, you can use the tune2fs utility ("man 92 tune2fs"). To modify attributes of files and directories on ext3 93 file systems, use chattr ("man chattr"). You need to be using 94 e2fsprogs version 1.20 or later in order to create ext3 journals 95 (available at <http://sourceforge.net/projects/e2fsprogs/>). 96 97 To compile this file system support as a module, choose M here: the 98 module will be called ext3. Be aware however that the file system 99 of your root partition (the one containing the directory /) cannot 100 be compiled as a module, and so this may be dangerous. 101 102config EXT3_FS_XATTR 103 bool "Ext3 extended attributes" 104 depends on EXT3_FS 105 default y 106 help 107 Extended attributes are name:value pairs associated with inodes by 108 the kernel or by users (see the attr(5) manual page, or visit 109 <http://acl.bestbits.at/> for details). 110 111 If unsure, say N. 112 113 You need this for POSIX ACL support on ext3. 114 115config EXT3_FS_POSIX_ACL 116 bool "Ext3 POSIX Access Control Lists" 117 depends on EXT3_FS_XATTR 118 select FS_POSIX_ACL 119 help 120 Posix Access Control Lists (ACLs) support permissions for users and 121 groups beyond the owner/group/world scheme. 122 123 To learn more about Access Control Lists, visit the Posix ACLs for 124 Linux website <http://acl.bestbits.at/>. 125 126 If you don't know what Access Control Lists are, say N 127 128config EXT3_FS_SECURITY 129 bool "Ext3 Security Labels" 130 depends on EXT3_FS_XATTR 131 help 132 Security labels support alternative access control models 133 implemented by security modules like SELinux. This option 134 enables an extended attribute handler for file security 135 labels in the ext3 filesystem. 136 137 If you are not using a security module that requires using 138 extended attributes for file security labels, say N. 139 140config JBD 141# CONFIG_JBD could be its own option (even modular), but until there are 142# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS 143# dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS 144 tristate 145 default EXT3_FS 146 help 147 This is a generic journaling layer for block devices. It is 148 currently used by the ext3 file system, but it could also be used to 149 add journal support to other file systems or block devices such as 150 RAID or LVM. 151 152 If you are using the ext3 file system, you need to say Y here. If 153 you are not using ext3 then you will probably want to say N. 154 155 To compile this device as a module, choose M here: the module will be 156 called jbd. If you are compiling ext3 into the kernel, you cannot 157 compile this code as a module. 158 159config JBD_DEBUG 160 bool "JBD (ext3) debugging support" 161 depends on JBD 162 help 163 If you are using the ext3 journaled file system (or potentially any 164 other file system/device using JBD), this option allows you to 165 enable debugging output while the system is running, in order to 166 help track down any problems you are having. By default the 167 debugging output will be turned off. 168 169 If you select Y here, then you will be able to turn on debugging 170 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between 171 1 and 5, the higher the number, the more debugging output is 172 generated. To turn debugging off again, do 173 "echo 0 > /proc/sys/fs/jbd-debug". 174 175config FS_MBCACHE 176# Meta block cache for Extended Attributes (ext2/ext3) 177 tristate 178 depends on EXT2_FS_XATTR || EXT3_FS_XATTR 179 default y if EXT2_FS=y || EXT3_FS=y 180 default m if EXT2_FS=m || EXT3_FS=m 181 182config REISERFS_FS 183 tristate "Reiserfs support" 184 help 185 Stores not just filenames but the files themselves in a balanced 186 tree. Uses journaling. 187 188 Balanced trees are more efficient than traditional file system 189 architectural foundations. 190 191 In general, ReiserFS is as fast as ext2, but is very efficient with 192 large directories and small files. Additional patches are needed 193 for NFS and quotas, please see <http://www.namesys.com/> for links. 194 195 It is more easily extended to have features currently found in 196 database and keyword search systems than block allocation based file 197 systems are. The next version will be so extended, and will support 198 plugins consistent with our motto ``It takes more than a license to 199 make source code open.'' 200 201 Read <http://www.namesys.com/> to learn more about reiserfs. 202 203 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 204 205 If you like it, you can pay us to add new features to it that you 206 need, buy a support contract, or pay us to port it to another OS. 207 208config REISERFS_CHECK 209 bool "Enable reiserfs debug mode" 210 depends on REISERFS_FS 211 help 212 If you set this to Y, then ReiserFS will perform every check it can 213 possibly imagine of its internal consistency throughout its 214 operation. It will also go substantially slower. More than once we 215 have forgotten that this was on, and then gone despondent over the 216 latest benchmarks.:-) Use of this option allows our team to go all 217 out in checking for consistency when debugging without fear of its 218 effect on end users. If you are on the verge of sending in a bug 219 report, say Y and you might get a useful error message. Almost 220 everyone should say N. 221 222config REISERFS_PROC_INFO 223 bool "Stats in /proc/fs/reiserfs" 224 depends on REISERFS_FS 225 help 226 Create under /proc/fs/reiserfs a hierarchy of files, displaying 227 various ReiserFS statistics and internal data at the expense of 228 making your kernel or module slightly larger (+8 KB). This also 229 increases the amount of kernel memory required for each mount. 230 Almost everyone but ReiserFS developers and people fine-tuning 231 reiserfs or tracing problems should say N. 232 233config REISERFS_FS_XATTR 234 bool "ReiserFS extended attributes" 235 depends on REISERFS_FS 236 help 237 Extended attributes are name:value pairs associated with inodes by 238 the kernel or by users (see the attr(5) manual page, or visit 239 <http://acl.bestbits.at/> for details). 240 241 If unsure, say N. 242 243config REISERFS_FS_POSIX_ACL 244 bool "ReiserFS POSIX Access Control Lists" 245 depends on REISERFS_FS_XATTR 246 select FS_POSIX_ACL 247 help 248 Posix Access Control Lists (ACLs) support permissions for users and 249 groups beyond the owner/group/world scheme. 250 251 To learn more about Access Control Lists, visit the Posix ACLs for 252 Linux website <http://acl.bestbits.at/>. 253 254 If you don't know what Access Control Lists are, say N 255 256config REISERFS_FS_SECURITY 257 bool "ReiserFS Security Labels" 258 depends on REISERFS_FS_XATTR 259 help 260 Security labels support alternative access control models 261 implemented by security modules like SELinux. This option 262 enables an extended attribute handler for file security 263 labels in the ReiserFS filesystem. 264 265 If you are not using a security module that requires using 266 extended attributes for file security labels, say N. 267 268config JFS_FS 269 tristate "JFS filesystem support" 270 select NLS 271 help 272 This is a port of IBM's Journaled Filesystem . More information is 273 available in the file <file:Documentation/filesystems/jfs.txt>. 274 275 If you do not intend to use the JFS filesystem, say N. 276 277config JFS_POSIX_ACL 278 bool "JFS POSIX Access Control Lists" 279 depends on JFS_FS 280 select FS_POSIX_ACL 281 help 282 Posix Access Control Lists (ACLs) support permissions for users and 283 groups beyond the owner/group/world scheme. 284 285 To learn more about Access Control Lists, visit the Posix ACLs for 286 Linux website <http://acl.bestbits.at/>. 287 288 If you don't know what Access Control Lists are, say N 289 290config JFS_SECURITY 291 bool "JFS Security Labels" 292 depends on JFS_FS 293 help 294 Security labels support alternative access control models 295 implemented by security modules like SELinux. This option 296 enables an extended attribute handler for file security 297 labels in the jfs filesystem. 298 299 If you are not using a security module that requires using 300 extended attributes for file security labels, say N. 301 302config JFS_DEBUG 303 bool "JFS debugging" 304 depends on JFS_FS 305 help 306 If you are experiencing any problems with the JFS filesystem, say 307 Y here. This will result in additional debugging messages to be 308 written to the system log. Under normal circumstances, this 309 results in very little overhead. 310 311config JFS_STATISTICS 312 bool "JFS statistics" 313 depends on JFS_FS 314 help 315 Enabling this option will cause statistics from the JFS file system 316 to be made available to the user in the /proc/fs/jfs/ directory. 317 318config FS_POSIX_ACL 319# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs) 320# 321# NOTE: you can implement Posix ACLs without these helpers (XFS does). 322# Never use this symbol for ifdefs. 323# 324 bool 325 default n 326 327source "fs/xfs/Kconfig" 328 329config MINIX_FS 330 tristate "Minix fs support" 331 help 332 Minix is a simple operating system used in many classes about OS's. 333 The minix file system (method to organize files on a hard disk 334 partition or a floppy disk) was the original file system for Linux, 335 but has been superseded by the second extended file system ext2fs. 336 You don't want to use the minix file system on your hard disk 337 because of certain built-in restrictions, but it is sometimes found 338 on older Linux floppy disks. This option will enlarge your kernel 339 by about 28 KB. If unsure, say N. 340 341 To compile this file system support as a module, choose M here: the 342 module will be called minix. Note that the file system of your root 343 partition (the one containing the directory /) cannot be compiled as 344 a module. 345 346config ROMFS_FS 347 tristate "ROM file system support" 348 ---help--- 349 This is a very small read-only file system mainly intended for 350 initial ram disks of installation disks, but it could be used for 351 other read-only media as well. Read 352 <file:Documentation/filesystems/romfs.txt> for details. 353 354 To compile this file system support as a module, choose M here: the 355 module will be called romfs. Note that the file system of your 356 root partition (the one containing the directory /) cannot be a 357 module. 358 359 If you don't know whether you need it, then you don't need it: 360 answer N. 361 362config INOTIFY 363 bool "Inotify file change notification support" 364 default y 365 ---help--- 366 Say Y here to enable inotify support and the associated system 367 calls. Inotify is a file change notification system and a 368 replacement for dnotify. Inotify fixes numerous shortcomings in 369 dnotify and introduces several new features. It allows monitoring 370 of both files and directories via a single open fd. Other features 371 include multiple file events, one-shot support, and unmount 372 notification. 373 374 For more information, see Documentation/filesystems/inotify.txt 375 376 If unsure, say Y. 377 378config QUOTA 379 bool "Quota support" 380 help 381 If you say Y here, you will be able to set per user limits for disk 382 usage (also called disk quotas). Currently, it works for the 383 ext2, ext3, and reiserfs file system. ext3 also supports journalled 384 quotas for which you don't need to run quotacheck(8) after an unclean 385 shutdown. You need additional software in order to use quota support 386 (you can download sources from 387 <http://www.sf.net/projects/linuxquota/>). For further details, read 388 the Quota mini-HOWTO, available from 389 <http://www.tldp.org/docs.html#howto>, or the documentation provided 390 with the quota tools. Probably the quota support is only useful for 391 multi user systems. If unsure, say N. 392 393config QFMT_V1 394 tristate "Old quota format support" 395 depends on QUOTA 396 help 397 This quota format was (is) used by kernels earlier than 2.4.22. If 398 you have quota working and you don't want to convert to new quota 399 format say Y here. 400 401config QFMT_V2 402 tristate "Quota format v2 support" 403 depends on QUOTA 404 help 405 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 406 need this functionality say Y here. Note that you will need recent 407 quota utilities (>= 3.01) for new quota format with this kernel. 408 409config QUOTACTL 410 bool 411 depends on XFS_QUOTA || QUOTA 412 default y 413 414config DNOTIFY 415 bool "Dnotify support" if EMBEDDED 416 default y 417 help 418 Dnotify is a directory-based per-fd file change notification system 419 that uses signals to communicate events to user-space. There exist 420 superior alternatives, but some applications may still rely on 421 dnotify. 422 423 Because of this, if unsure, say Y. 424 425config AUTOFS_FS 426 tristate "Kernel automounter support" 427 help 428 The automounter is a tool to automatically mount remote file systems 429 on demand. This implementation is partially kernel-based to reduce 430 overhead in the already-mounted case; this is unlike the BSD 431 automounter (amd), which is a pure user space daemon. 432 433 To use the automounter you need the user-space tools from the autofs 434 package; you can find the location in <file:Documentation/Changes>. 435 You also want to answer Y to "NFS file system support", below. 436 437 If you want to use the newer version of the automounter with more 438 features, say N here and say Y to "Kernel automounter v4 support", 439 below. 440 441 To compile this support as a module, choose M here: the module will be 442 called autofs. 443 444 If you are not a part of a fairly large, distributed network, you 445 probably do not need an automounter, and can say N here. 446 447config AUTOFS4_FS 448 tristate "Kernel automounter version 4 support (also supports v3)" 449 help 450 The automounter is a tool to automatically mount remote file systems 451 on demand. This implementation is partially kernel-based to reduce 452 overhead in the already-mounted case; this is unlike the BSD 453 automounter (amd), which is a pure user space daemon. 454 455 To use the automounter you need the user-space tools from 456 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 457 want to answer Y to "NFS file system support", below. 458 459 To compile this support as a module, choose M here: the module will be 460 called autofs4. You will need to add "alias autofs autofs4" to your 461 modules configuration file. 462 463 If you are not a part of a fairly large, distributed network or 464 don't have a laptop which needs to dynamically reconfigure to the 465 local network, you probably do not need an automounter, and can say 466 N here. 467 468menu "CD-ROM/DVD Filesystems" 469 470config ISO9660_FS 471 tristate "ISO 9660 CDROM file system support" 472 help 473 This is the standard file system used on CD-ROMs. It was previously 474 known as "High Sierra File System" and is called "hsfs" on other 475 Unix systems. The so-called Rock-Ridge extensions which allow for 476 long Unix filenames and symbolic links are also supported by this 477 driver. If you have a CD-ROM drive and want to do more with it than 478 just listen to audio CDs and watch its LEDs, say Y (and read 479 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 480 available from <http://www.tldp.org/docs.html#howto>), thereby 481 enlarging your kernel by about 27 KB; otherwise say N. 482 483 To compile this file system support as a module, choose M here: the 484 module will be called isofs. 485 486config JOLIET 487 bool "Microsoft Joliet CDROM extensions" 488 depends on ISO9660_FS 489 select NLS 490 help 491 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 492 which allows for long filenames in unicode format (unicode is the 493 new 16 bit character code, successor to ASCII, which encodes the 494 characters of almost all languages of the world; see 495 <http://www.unicode.org/> for more information). Say Y here if you 496 want to be able to read Joliet CD-ROMs under Linux. 497 498config ZISOFS 499 bool "Transparent decompression extension" 500 depends on ISO9660_FS 501 select ZLIB_INFLATE 502 help 503 This is a Linux-specific extension to RockRidge which lets you store 504 data in compressed form on a CD-ROM and have it transparently 505 decompressed when the CD-ROM is accessed. See 506 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 507 necessary to create such a filesystem. Say Y here if you want to be 508 able to read such compressed CD-ROMs. 509 510config ZISOFS_FS 511# for fs/nls/Config.in 512 tristate 513 depends on ZISOFS 514 default ISO9660_FS 515 516config UDF_FS 517 tristate "UDF file system support" 518 help 519 This is the new file system used on some CD-ROMs and DVDs. Say Y if 520 you intend to mount DVD discs or CDRW's written in packet mode, or 521 if written to by other UDF utilities, such as DirectCD. 522 Please read <file:Documentation/filesystems/udf.txt>. 523 524 To compile this file system support as a module, choose M here: the 525 module will be called udf. 526 527 If unsure, say N. 528 529config UDF_NLS 530 bool 531 default y 532 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 533 534endmenu 535 536menu "DOS/FAT/NT Filesystems" 537 538config FAT_FS 539 tristate 540 select NLS 541 help 542 If you want to use one of the FAT-based file systems (the MS-DOS and 543 VFAT (Windows 95) file systems), then you must say Y or M here 544 to include FAT support. You will then be able to mount partitions or 545 diskettes with FAT-based file systems and transparently access the 546 files on them, i.e. MSDOS files will look and behave just like all 547 other Unix files. 548 549 This FAT support is not a file system in itself, it only provides 550 the foundation for the other file systems. You will have to say Y or 551 M to at least one of "MSDOS fs support" or "VFAT fs support" in 552 order to make use of it. 553 554 Another way to read and write MSDOS floppies and hard drive 555 partitions from within Linux (but not transparently) is with the 556 mtools ("man mtools") program suite. You don't need to say Y here in 557 order to do that. 558 559 If you need to move large files on floppies between a DOS and a 560 Linux box, say Y here, mount the floppy under Linux with an MSDOS 561 file system and use GNU tar's M option. GNU tar is a program 562 available for Unix and DOS ("man tar" or "info tar"). 563 564 It is now also becoming possible to read and write compressed FAT 565 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for 566 details. 567 568 The FAT support will enlarge your kernel by about 37 KB. If unsure, 569 say Y. 570 571 To compile this as a module, choose M here: the module will be called 572 fat. Note that if you compile the FAT support as a module, you 573 cannot compile any of the FAT-based file systems into the kernel 574 -- they will have to be modules as well. 575 576config MSDOS_FS 577 tristate "MSDOS fs support" 578 select FAT_FS 579 help 580 This allows you to mount MSDOS partitions of your hard drive (unless 581 they are compressed; to access compressed MSDOS partitions under 582 Linux, you can either use the DOS emulator DOSEMU, described in the 583 DOSEMU-HOWTO, available from 584 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 585 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 586 intend to use dosemu with a non-compressed MSDOS partition, say Y 587 here) and MSDOS floppies. This means that file access becomes 588 transparent, i.e. the MSDOS files look and behave just like all 589 other Unix files. 590 591 If you have Windows 95 or Windows NT installed on your MSDOS 592 partitions, you should use the VFAT file system (say Y to "VFAT fs 593 support" below), or you will not be able to see the long filenames 594 generated by Windows 95 / Windows NT. 595 596 This option will enlarge your kernel by about 7 KB. If unsure, 597 answer Y. This will only work if you said Y to "DOS FAT fs support" 598 as well. To compile this as a module, choose M here: the module will 599 be called msdos. 600 601config VFAT_FS 602 tristate "VFAT (Windows-95) fs support" 603 select FAT_FS 604 help 605 This option provides support for normal Windows file systems with 606 long filenames. That includes non-compressed FAT-based file systems 607 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 608 programs from the mtools package. 609 610 The VFAT support enlarges your kernel by about 10 KB and it only 611 works if you said Y to the "DOS FAT fs support" above. Please read 612 the file <file:Documentation/filesystems/vfat.txt> for details. If 613 unsure, say Y. 614 615 To compile this as a module, choose M here: the module will be called 616 vfat. 617 618config FAT_DEFAULT_CODEPAGE 619 int "Default codepage for FAT" 620 depends on MSDOS_FS || VFAT_FS 621 default 437 622 help 623 This option should be set to the codepage of your FAT filesystems. 624 It can be overridden with the "codepage" mount option. 625 See <file:Documentation/filesystems/vfat.txt> for more information. 626 627config FAT_DEFAULT_IOCHARSET 628 string "Default iocharset for FAT" 629 depends on VFAT_FS 630 default "iso8859-1" 631 help 632 Set this to the default input/output character set you'd 633 like FAT to use. It should probably match the character set 634 that most of your FAT filesystems use, and can be overridden 635 with the "iocharset" mount option for FAT filesystems. 636 Note that "utf8" is not recommended for FAT filesystems. 637 If unsure, you shouldn't set "utf8" here. 638 See <file:Documentation/filesystems/vfat.txt> for more information. 639 640config NTFS_FS 641 tristate "NTFS file system support" 642 select NLS 643 help 644 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 645 646 Saying Y or M here enables read support. There is partial, but 647 safe, write support available. For write support you must also 648 say Y to "NTFS write support" below. 649 650 There are also a number of user-space tools available, called 651 ntfsprogs. These include ntfsundelete and ntfsresize, that work 652 without NTFS support enabled in the kernel. 653 654 This is a rewrite from scratch of Linux NTFS support and replaced 655 the old NTFS code starting with Linux 2.5.11. A backport to 656 the Linux 2.4 kernel series is separately available as a patch 657 from the project web site. 658 659 For more information see <file:Documentation/filesystems/ntfs.txt> 660 and <http://linux-ntfs.sourceforge.net/>. 661 662 To compile this file system support as a module, choose M here: the 663 module will be called ntfs. 664 665 If you are not using Windows NT, 2000, XP or 2003 in addition to 666 Linux on your computer it is safe to say N. 667 668config NTFS_DEBUG 669 bool "NTFS debugging support" 670 depends on NTFS_FS 671 help 672 If you are experiencing any problems with the NTFS file system, say 673 Y here. This will result in additional consistency checks to be 674 performed by the driver as well as additional debugging messages to 675 be written to the system log. Note that debugging messages are 676 disabled by default. To enable them, supply the option debug_msgs=1 677 at the kernel command line when booting the kernel or as an option 678 to insmod when loading the ntfs module. Once the driver is active, 679 you can enable debugging messages by doing (as root): 680 echo 1 > /proc/sys/fs/ntfs-debug 681 Replacing the "1" with "0" would disable debug messages. 682 683 If you leave debugging messages disabled, this results in little 684 overhead, but enabling debug messages results in very significant 685 slowdown of the system. 686 687 When reporting bugs, please try to have available a full dump of 688 debugging messages while the misbehaviour was occurring. 689 690config NTFS_RW 691 bool "NTFS write support" 692 depends on NTFS_FS 693 help 694 This enables the partial, but safe, write support in the NTFS driver. 695 696 The only supported operation is overwriting existing files, without 697 changing the file length. No file or directory creation, deletion or 698 renaming is possible. Note only non-resident files can be written to 699 so you may find that some very small files (<500 bytes or so) cannot 700 be written to. 701 702 While we cannot guarantee that it will not damage any data, we have 703 so far not received a single report where the driver would have 704 damaged someones data so we assume it is perfectly safe to use. 705 706 Note: While write support is safe in this version (a rewrite from 707 scratch of the NTFS support), it should be noted that the old NTFS 708 write support, included in Linux 2.5.10 and before (since 1997), 709 is not safe. 710 711 This is currently useful with TopologiLinux. TopologiLinux is run 712 on top of any DOS/Microsoft Windows system without partitioning your 713 hard disk. Unlike other Linux distributions TopologiLinux does not 714 need its own partition. For more information see 715 <http://topologi-linux.sourceforge.net/> 716 717 It is perfectly safe to say N here. 718 719endmenu 720 721menu "Pseudo filesystems" 722 723config PROC_FS 724 bool "/proc file system support" 725 help 726 This is a virtual file system providing information about the status 727 of the system. "Virtual" means that it doesn't take up any space on 728 your hard disk: the files are created on the fly by the kernel when 729 you try to access them. Also, you cannot read the files with older 730 version of the program less: you need to use more or cat. 731 732 It's totally cool; for example, "cat /proc/interrupts" gives 733 information about what the different IRQs are used for at the moment 734 (there is a small number of Interrupt ReQuest lines in your computer 735 that are used by the attached devices to gain the CPU's attention -- 736 often a source of trouble if two devices are mistakenly configured 737 to use the same IRQ). The program procinfo to display some 738 information about your system gathered from the /proc file system. 739 740 Before you can use the /proc file system, it has to be mounted, 741 meaning it has to be given a location in the directory hierarchy. 742 That location should be /proc. A command such as "mount -t proc proc 743 /proc" or the equivalent line in /etc/fstab does the job. 744 745 The /proc file system is explained in the file 746 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 747 ("man 5 proc"). 748 749 This option will enlarge your kernel by about 67 KB. Several 750 programs depend on this, so everyone should say Y here. 751 752config PROC_KCORE 753 bool "/proc/kcore support" if !ARM 754 depends on PROC_FS && MMU 755 756config PROC_VMCORE 757 bool "/proc/vmcore support (EXPERIMENTAL)" 758 depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP 759 help 760 Exports the dump image of crashed kernel in ELF format. 761 762config SYSFS 763 bool "sysfs file system support" if EMBEDDED 764 default y 765 help 766 The sysfs filesystem is a virtual filesystem that the kernel uses to 767 export internal kernel objects, their attributes, and their 768 relationships to one another. 769 770 Users can use sysfs to ascertain useful information about the running 771 kernel, such as the devices the kernel has discovered on each bus and 772 which driver each is bound to. sysfs can also be used to tune devices 773 and other kernel subsystems. 774 775 Some system agents rely on the information in sysfs to operate. 776 /sbin/hotplug uses device and object attributes in sysfs to assist in 777 delegating policy decisions, like persistantly naming devices. 778 779 sysfs is currently used by the block subsystem to mount the root 780 partition. If sysfs is disabled you must specify the boot device on 781 the kernel boot command line via its major and minor numbers. For 782 example, "root=03:01" for /dev/hda1. 783 784 Designers of embedded systems may wish to say N here to conserve space. 785 786config TMPFS 787 bool "Virtual memory file system support (former shm fs)" 788 help 789 Tmpfs is a file system which keeps all files in virtual memory. 790 791 Everything in tmpfs is temporary in the sense that no files will be 792 created on your hard drive. The files live in memory and swap 793 space. If you unmount a tmpfs instance, everything stored therein is 794 lost. 795 796 See <file:Documentation/filesystems/tmpfs.txt> for details. 797 798config HUGETLBFS 799 bool "HugeTLB file system support" 800 depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN 801 802config HUGETLB_PAGE 803 def_bool HUGETLBFS 804 805config RAMFS 806 bool 807 default y 808 ---help--- 809 Ramfs is a file system which keeps all files in RAM. It allows 810 read and write access. 811 812 It is more of an programming example than a useable file system. If 813 you need a file system which lives in RAM with limit checking use 814 tmpfs. 815 816 To compile this as a module, choose M here: the module will be called 817 ramfs. 818 819endmenu 820 821menu "Miscellaneous filesystems" 822 823config ADFS_FS 824 tristate "ADFS file system support (EXPERIMENTAL)" 825 depends on EXPERIMENTAL 826 help 827 The Acorn Disc Filing System is the standard file system of the 828 RiscOS operating system which runs on Acorn's ARM-based Risc PC 829 systems and the Acorn Archimedes range of machines. If you say Y 830 here, Linux will be able to read from ADFS partitions on hard drives 831 and from ADFS-formatted floppy discs. If you also want to be able to 832 write to those devices, say Y to "ADFS write support" below. 833 834 The ADFS partition should be the first partition (i.e., 835 /dev/[hs]d?1) on each of your drives. Please read the file 836 <file:Documentation/filesystems/adfs.txt> for further details. 837 838 To compile this code as a module, choose M here: the module will be 839 called adfs. 840 841 If unsure, say N. 842 843config ADFS_FS_RW 844 bool "ADFS write support (DANGEROUS)" 845 depends on ADFS_FS 846 help 847 If you say Y here, you will be able to write to ADFS partitions on 848 hard drives and ADFS-formatted floppy disks. This is experimental 849 codes, so if you're unsure, say N. 850 851config AFFS_FS 852 tristate "Amiga FFS file system support (EXPERIMENTAL)" 853 depends on EXPERIMENTAL 854 help 855 The Fast File System (FFS) is the common file system used on hard 856 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 857 if you want to be able to read and write files from and to an Amiga 858 FFS partition on your hard drive. Amiga floppies however cannot be 859 read with this driver due to an incompatibility of the floppy 860 controller used in an Amiga and the standard floppy controller in 861 PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 862 and <file:fs/affs/Changes>. 863 864 With this driver you can also mount disk files used by Bernd 865 Schmidt's Un*X Amiga Emulator 866 (<http://www.freiburg.linux.de/~uae/>). 867 If you want to do this, you will also need to say Y or M to "Loop 868 device support", above. 869 870 To compile this file system support as a module, choose M here: the 871 module will be called affs. If unsure, say N. 872 873config HFS_FS 874 tristate "Apple Macintosh file system support (EXPERIMENTAL)" 875 depends on EXPERIMENTAL 876 help 877 If you say Y here, you will be able to mount Macintosh-formatted 878 floppy disks and hard drive partitions with full read-write access. 879 Please read <file:fs/hfs/HFS.txt> to learn about the available mount 880 options. 881 882 To compile this file system support as a module, choose M here: the 883 module will be called hfs. 884 885config HFSPLUS_FS 886 tristate "Apple Extended HFS file system support" 887 select NLS 888 select NLS_UTF8 889 help 890 If you say Y here, you will be able to mount extended format 891 Macintosh-formatted hard drive partitions with full read-write access. 892 893 This file system is often called HFS+ and was introduced with 894 MacOS 8. It includes all Mac specific filesystem data such as 895 data forks and creator codes, but it also has several UNIX 896 style features such as file ownership and permissions. 897 898config BEFS_FS 899 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 900 depends on EXPERIMENTAL 901 select NLS 902 help 903 The BeOS File System (BeFS) is the native file system of Be, Inc's 904 BeOS. Notable features include support for arbitrary attributes 905 on files and directories, and database-like indeces on selected 906 attributes. (Also note that this driver doesn't make those features 907 available at this time). It is a 64 bit filesystem, so it supports 908 extremly large volumes and files. 909 910 If you use this filesystem, you should also say Y to at least one 911 of the NLS (native language support) options below. 912 913 If you don't know what this is about, say N. 914 915 To compile this as a module, choose M here: the module will be 916 called befs. 917 918config BEFS_DEBUG 919 bool "Debug BeFS" 920 depends on BEFS_FS 921 help 922 If you say Y here, you can use the 'debug' mount option to enable 923 debugging output from the driver. 924 925config BFS_FS 926 tristate "BFS file system support (EXPERIMENTAL)" 927 depends on EXPERIMENTAL 928 help 929 Boot File System (BFS) is a file system used under SCO UnixWare to 930 allow the bootloader access to the kernel image and other important 931 files during the boot process. It is usually mounted under /stand 932 and corresponds to the slice marked as "STAND" in the UnixWare 933 partition. You should say Y if you want to read or write the files 934 on your /stand slice from within Linux. You then also need to say Y 935 to "UnixWare slices support", below. More information about the BFS 936 file system is contained in the file 937 <file:Documentation/filesystems/bfs.txt>. 938 939 If you don't know what this is about, say N. 940 941 To compile this as a module, choose M here: the module will be called 942 bfs. Note that the file system of your root partition (the one 943 containing the directory /) cannot be compiled as a module. 944 945 946 947config EFS_FS 948 tristate "EFS file system support (read only) (EXPERIMENTAL)" 949 depends on EXPERIMENTAL 950 help 951 EFS is an older file system used for non-ISO9660 CD-ROMs and hard 952 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 953 uses the XFS file system for hard disk partitions however). 954 955 This implementation only offers read-only access. If you don't know 956 what all this is about, it's safe to say N. For more information 957 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 958 959 To compile the EFS file system support as a module, choose M here: the 960 module will be called efs. 961 962config JFFS_FS 963 tristate "Journalling Flash File System (JFFS) support" 964 depends on MTD 965 help 966 JFFS is the Journaling Flash File System developed by Axis 967 Communications in Sweden, aimed at providing a crash/powerdown-safe 968 file system for disk-less embedded devices. Further information is 969 available at (<http://developer.axis.com/software/jffs/>). 970 971config JFFS_FS_VERBOSE 972 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)" 973 depends on JFFS_FS 974 default "0" 975 help 976 Determines the verbosity level of the JFFS debugging messages. 977 978config JFFS_PROC_FS 979 bool "JFFS stats available in /proc filesystem" 980 depends on JFFS_FS && PROC_FS 981 help 982 Enabling this option will cause statistics from mounted JFFS file systems 983 to be made available to the user in the /proc/fs/jffs/ directory. 984 985config JFFS2_FS 986 tristate "Journalling Flash File System v2 (JFFS2) support" 987 select CRC32 988 depends on MTD 989 help 990 JFFS2 is the second generation of the Journalling Flash File System 991 for use on diskless embedded devices. It provides improved wear 992 levelling, compression and support for hard links. You cannot use 993 this on normal block devices, only on 'MTD' devices. 994 995 Further information on the design and implementation of JFFS2 is 996 available at <http://sources.redhat.com/jffs2/>. 997 998config JFFS2_FS_DEBUG 999 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 1000 depends on JFFS2_FS 1001 default "0" 1002 help 1003 This controls the amount of debugging messages produced by the JFFS2 1004 code. Set it to zero for use in production systems. For evaluation, 1005 testing and debugging, it's advisable to set it to one. This will 1006 enable a few assertions and will print debugging messages at the 1007 KERN_DEBUG loglevel, where they won't normally be visible. Level 2 1008 is unlikely to be useful - it enables extra debugging in certain 1009 areas which at one point needed debugging, but when the bugs were 1010 located and fixed, the detailed messages were relegated to level 2. 1011 1012 If reporting bugs, please try to have available a full dump of the 1013 messages at debug level 1 while the misbehaviour was occurring. 1014 1015config JFFS2_FS_WRITEBUFFER 1016 bool "JFFS2 write-buffering support" 1017 depends on JFFS2_FS 1018 default y 1019 help 1020 This enables the write-buffering support in JFFS2. 1021 1022 This functionality is required to support JFFS2 on the following 1023 types of flash devices: 1024 - NAND flash 1025 - NOR flash with transparent ECC 1026 - DataFlash 1027 1028config JFFS2_COMPRESSION_OPTIONS 1029 bool "Advanced compression options for JFFS2" 1030 depends on JFFS2_FS 1031 default n 1032 help 1033 Enabling this option allows you to explicitly choose which 1034 compression modules, if any, are enabled in JFFS2. Removing 1035 compressors and mean you cannot read existing file systems, 1036 and enabling experimental compressors can mean that you 1037 write a file system which cannot be read by a standard kernel. 1038 1039 If unsure, you should _definitely_ say 'N'. 1040 1041config JFFS2_ZLIB 1042 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 1043 select ZLIB_INFLATE 1044 select ZLIB_DEFLATE 1045 depends on JFFS2_FS 1046 default y 1047 help 1048 Zlib is designed to be a free, general-purpose, legally unencumbered, 1049 lossless data-compression library for use on virtually any computer 1050 hardware and operating system. See <http://www.gzip.org/zlib/> for 1051 further information. 1052 1053 Say 'Y' if unsure. 1054 1055config JFFS2_RTIME 1056 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 1057 depends on JFFS2_FS 1058 default y 1059 help 1060 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 1061 1062config JFFS2_RUBIN 1063 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 1064 depends on JFFS2_FS 1065 default n 1066 help 1067 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 1068 1069choice 1070 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 1071 default JFFS2_CMODE_PRIORITY 1072 depends on JFFS2_FS 1073 help 1074 You can set here the default compression mode of JFFS2 from 1075 the available compression modes. Don't touch if unsure. 1076 1077config JFFS2_CMODE_NONE 1078 bool "no compression" 1079 help 1080 Uses no compression. 1081 1082config JFFS2_CMODE_PRIORITY 1083 bool "priority" 1084 help 1085 Tries the compressors in a predefinied order and chooses the first 1086 successful one. 1087 1088config JFFS2_CMODE_SIZE 1089 bool "size (EXPERIMENTAL)" 1090 help 1091 Tries all compressors and chooses the one which has the smallest 1092 result. 1093 1094endchoice 1095 1096config CRAMFS 1097 tristate "Compressed ROM file system support (cramfs)" 1098 select ZLIB_INFLATE 1099 help 1100 Saying Y here includes support for CramFs (Compressed ROM File 1101 System). CramFs is designed to be a simple, small, and compressed 1102 file system for ROM based embedded systems. CramFs is read-only, 1103 limited to 256MB file systems (with 16MB files), and doesn't support 1104 16/32 bits uid/gid, hard links and timestamps. 1105 1106 See <file:Documentation/filesystems/cramfs.txt> and 1107 <file:fs/cramfs/README> for further information. 1108 1109 To compile this as a module, choose M here: the module will be called 1110 cramfs. Note that the root file system (the one containing the 1111 directory /) cannot be compiled as a module. 1112 1113 If unsure, say N. 1114 1115config VXFS_FS 1116 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 1117 help 1118 FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 1119 file system format. VERITAS VxFS(TM) is the standard file system 1120 of SCO UnixWare (and possibly others) and optionally available 1121 for Sunsoft Solaris, HP-UX and many other operating systems. 1122 Currently only readonly access is supported. 1123 1124 NOTE: the file system type as used by mount(1), mount(2) and 1125 fstab(5) is 'vxfs' as it describes the file system format, not 1126 the actual driver. 1127 1128 To compile this as a module, choose M here: the module will be 1129 called freevxfs. If unsure, say N. 1130 1131 1132config HPFS_FS 1133 tristate "OS/2 HPFS file system support" 1134 help 1135 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1136 is the file system used for organizing files on OS/2 hard disk 1137 partitions. Say Y if you want to be able to read files from and 1138 write files to an OS/2 HPFS partition on your hard drive. OS/2 1139 floppies however are in regular MSDOS format, so you don't need this 1140 option in order to be able to read them. Read 1141 <file:Documentation/filesystems/hpfs.txt>. 1142 1143 To compile this file system support as a module, choose M here: the 1144 module will be called hpfs. If unsure, say N. 1145 1146 1147 1148config QNX4FS_FS 1149 tristate "QNX4 file system support (read only)" 1150 help 1151 This is the file system used by the real-time operating systems 1152 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1153 Further information is available at <http://www.qnx.com/>. 1154 Say Y if you intend to mount QNX hard disks or floppies. 1155 Unless you say Y to "QNX4FS read-write support" below, you will 1156 only be able to read these file systems. 1157 1158 To compile this file system support as a module, choose M here: the 1159 module will be called qnx4. 1160 1161 If you don't know whether you need it, then you don't need it: 1162 answer N. 1163 1164config QNX4FS_RW 1165 bool "QNX4FS write support (DANGEROUS)" 1166 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 1167 help 1168 Say Y if you want to test write support for QNX4 file systems. 1169 1170 It's currently broken, so for now: 1171 answer N. 1172 1173 1174 1175config SYSV_FS 1176 tristate "System V/Xenix/V7/Coherent file system support" 1177 help 1178 SCO, Xenix and Coherent are commercial Unix systems for Intel 1179 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1180 here would allow you to read from their floppies and hard disk 1181 partitions. 1182 1183 If you have floppies or hard disk partitions like that, it is likely 1184 that they contain binaries from those other Unix systems; in order 1185 to run these binaries, you will want to install linux-abi which is a 1186 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1187 UnixWare, Dell Unix and System V programs under Linux. It is 1188 available via FTP (user: ftp) from 1189 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1190 NOTE: that will work only for binaries from Intel-based systems; 1191 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1192 1193 If you only intend to mount files from some other Unix over the 1194 network using NFS, you don't need the System V file system support 1195 (but you need NFS file system support obviously). 1196 1197 Note that this option is generally not needed for floppies, since a 1198 good portable way to transport files and directories between unixes 1199 (and even other operating systems) is given by the tar program ("man 1200 tar" or preferably "info tar"). Note also that this option has 1201 nothing whatsoever to do with the option "System V IPC". Read about 1202 the System V file system in 1203 <file:Documentation/filesystems/sysv-fs.txt>. 1204 Saying Y here will enlarge your kernel by about 27 KB. 1205 1206 To compile this as a module, choose M here: the module will be called 1207 sysv. 1208 1209 If you haven't heard about all of this before, it's safe to say N. 1210 1211 1212 1213config UFS_FS 1214 tristate "UFS file system support (read only)" 1215 help 1216 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1217 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1218 Unixes can create and mount hard disk partitions and diskettes using 1219 this file system as well. Saying Y here will allow you to read from 1220 these partitions; if you also want to write to them, say Y to the 1221 experimental "UFS file system write support", below. Please read the 1222 file <file:Documentation/filesystems/ufs.txt> for more information. 1223 1224 The recently released UFS2 variant (used in FreeBSD 5.x) is 1225 READ-ONLY supported. 1226 1227 If you only intend to mount files from some other Unix over the 1228 network using NFS, you don't need the UFS file system support (but 1229 you need NFS file system support obviously). 1230 1231 Note that this option is generally not needed for floppies, since a 1232 good portable way to transport files and directories between unixes 1233 (and even other operating systems) is given by the tar program ("man 1234 tar" or preferably "info tar"). 1235 1236 When accessing NeXTstep files, you may need to convert them from the 1237 NeXT character set to the Latin1 character set; use the program 1238 recode ("info recode") for this purpose. 1239 1240 To compile the UFS file system support as a module, choose M here: the 1241 module will be called ufs. 1242 1243 If you haven't heard about all of this before, it's safe to say N. 1244 1245config UFS_FS_WRITE 1246 bool "UFS file system write support (DANGEROUS)" 1247 depends on UFS_FS && EXPERIMENTAL 1248 help 1249 Say Y here if you want to try writing to UFS partitions. This is 1250 experimental, so you should back up your UFS partitions beforehand. 1251 1252endmenu 1253 1254menu "Network File Systems" 1255 depends on NET 1256 1257config NFS_FS 1258 tristate "NFS file system support" 1259 depends on INET 1260 select LOCKD 1261 select SUNRPC 1262 select NFS_ACL_SUPPORT if NFS_V3_ACL 1263 help 1264 If you are connected to some other (usually local) Unix computer 1265 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 1266 on that computer (the NFS server) using the Network File Sharing 1267 protocol, say Y. "Mounting files" means that the client can access 1268 the files with usual UNIX commands as if they were sitting on the 1269 client's hard disk. For this to work, the server must run the 1270 programs nfsd and mountd (but does not need to have NFS file system 1271 support enabled in its kernel). NFS is explained in the Network 1272 Administrator's Guide, available from 1273 <http://www.tldp.org/docs.html#guide>, on its man page: "man 1274 nfs", and in the NFS-HOWTO. 1275 1276 A superior but less widely used alternative to NFS is provided by 1277 the Coda file system; see "Coda file system support" below. 1278 1279 If you say Y here, you should have said Y to TCP/IP networking also. 1280 This option would enlarge your kernel by about 27 KB. 1281 1282 To compile this file system support as a module, choose M here: the 1283 module will be called nfs. 1284 1285 If you are configuring a diskless machine which will mount its root 1286 file system over NFS at boot time, say Y here and to "Kernel 1287 level IP autoconfiguration" above and to "Root file system on NFS" 1288 below. You cannot compile this driver as a module in this case. 1289 There are two packages designed for booting diskless machines over 1290 the net: netboot, available from 1291 <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 1292 available from <http://ftp1.sourceforge.net/etherboot/>. 1293 1294 If you don't know what all this is about, say N. 1295 1296config NFS_V3 1297 bool "Provide NFSv3 client support" 1298 depends on NFS_FS 1299 help 1300 Say Y here if you want your NFS client to be able to speak version 1301 3 of the NFS protocol. 1302 1303 If unsure, say Y. 1304 1305config NFS_V3_ACL 1306 bool "Provide client support for the NFSv3 ACL protocol extension" 1307 depends on NFS_V3 1308 help 1309 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1310 Access Control Lists. The server should also be compiled with 1311 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1312 1313 If unsure, say N. 1314 1315config NFS_V4 1316 bool "Provide NFSv4 client support (EXPERIMENTAL)" 1317 depends on NFS_FS && EXPERIMENTAL 1318 select RPCSEC_GSS_KRB5 1319 help 1320 Say Y here if you want your NFS client to be able to speak the newer 1321 version 4 of the NFS protocol. 1322 1323 Note: Requires auxiliary userspace daemons which may be found on 1324 http://www.citi.umich.edu/projects/nfsv4/ 1325 1326 If unsure, say N. 1327 1328config NFS_DIRECTIO 1329 bool "Allow direct I/O on NFS files (EXPERIMENTAL)" 1330 depends on NFS_FS && EXPERIMENTAL 1331 help 1332 This option enables applications to perform uncached I/O on files 1333 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 1334 is set for a file, its data is not cached in the system's page 1335 cache. Data is moved to and from user-level application buffers 1336 directly. Unlike local disk-based file systems, NFS O_DIRECT has 1337 no alignment restrictions. 1338 1339 Unless your program is designed to use O_DIRECT properly, you are 1340 much better off allowing the NFS client to manage data caching for 1341 you. Misusing O_DIRECT can cause poor server performance or network 1342 storms. This kernel build option defaults OFF to avoid exposing 1343 system administrators unwittingly to a potentially hazardous 1344 feature. 1345 1346 For more details on NFS O_DIRECT, see fs/nfs/direct.c. 1347 1348 If unsure, say N. This reduces the size of the NFS client, and 1349 causes open() to return EINVAL if a file residing in NFS is 1350 opened with the O_DIRECT flag. 1351 1352config NFSD 1353 tristate "NFS server support" 1354 depends on INET 1355 select LOCKD 1356 select SUNRPC 1357 select EXPORTFS 1358 select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL 1359 help 1360 If you want your Linux box to act as an NFS *server*, so that other 1361 computers on your local network which support NFS can access certain 1362 directories on your box transparently, you have two options: you can 1363 use the self-contained user space program nfsd, in which case you 1364 should say N here, or you can say Y and use the kernel based NFS 1365 server. The advantage of the kernel based solution is that it is 1366 faster. 1367 1368 In either case, you will need support software; the respective 1369 locations are given in the file <file:Documentation/Changes> in the 1370 NFS section. 1371 1372 If you say Y here, you will get support for version 2 of the NFS 1373 protocol (NFSv2). If you also want NFSv3, say Y to the next question 1374 as well. 1375 1376 Please read the NFS-HOWTO, available from 1377 <http://www.tldp.org/docs.html#howto>. 1378 1379 To compile the NFS server support as a module, choose M here: the 1380 module will be called nfsd. If unsure, say N. 1381 1382config NFSD_V2_ACL 1383 bool 1384 depends on NFSD 1385 1386config NFSD_V3 1387 bool "Provide NFSv3 server support" 1388 depends on NFSD 1389 help 1390 If you would like to include the NFSv3 server as well as the NFSv2 1391 server, say Y here. If unsure, say Y. 1392 1393config NFSD_V3_ACL 1394 bool "Provide server support for the NFSv3 ACL protocol extension" 1395 depends on NFSD_V3 1396 select NFSD_V2_ACL 1397 help 1398 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1399 Access Control Lists on exported file systems. NFS clients should 1400 be compiled with the NFSv3 ACL protocol extension; see the 1401 CONFIG_NFS_V3_ACL option. If unsure, say N. 1402 1403config NFSD_V4 1404 bool "Provide NFSv4 server support (EXPERIMENTAL)" 1405 depends on NFSD_V3 && EXPERIMENTAL 1406 select NFSD_TCP 1407 select CRYPTO_MD5 1408 select CRYPTO 1409 select FS_POSIX_ACL 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 1416config NFSD_TCP 1417 bool "Provide NFS server over TCP support" 1418 depends on NFSD 1419 default y 1420 help 1421 If you want your NFS server to support TCP connections, say Y here. 1422 TCP connections usually perform better than the default UDP when 1423 the network is lossy or congested. If unsure, say Y. 1424 1425config ROOT_NFS 1426 bool "Root file system on NFS" 1427 depends on NFS_FS=y && IP_PNP 1428 help 1429 If you want your Linux box to mount its whole root file system (the 1430 one containing the directory /) from some other computer over the 1431 net via NFS (presumably because your box doesn't have a hard disk), 1432 say Y. Read <file:Documentation/nfsroot.txt> for details. It is 1433 likely that in this case, you also want to say Y to "Kernel level IP 1434 autoconfiguration" so that your box can discover its network address 1435 at boot time. 1436 1437 Most people say N here. 1438 1439config LOCKD 1440 tristate 1441 1442config LOCKD_V4 1443 bool 1444 depends on NFSD_V3 || NFS_V3 1445 default y 1446 1447config EXPORTFS 1448 tristate 1449 1450config NFS_ACL_SUPPORT 1451 tristate 1452 select FS_POSIX_ACL 1453 1454config NFS_COMMON 1455 bool 1456 depends on NFSD || NFS_FS 1457 default y 1458 1459config SUNRPC 1460 tristate 1461 1462config SUNRPC_GSS 1463 tristate 1464 1465config RPCSEC_GSS_KRB5 1466 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1467 depends on SUNRPC && EXPERIMENTAL 1468 select SUNRPC_GSS 1469 select CRYPTO 1470 select CRYPTO_MD5 1471 select CRYPTO_DES 1472 help 1473 Provides for secure RPC calls by means of a gss-api 1474 mechanism based on Kerberos V5. This is required for 1475 NFSv4. 1476 1477 Note: Requires an auxiliary userspace daemon which may be found on 1478 http://www.citi.umich.edu/projects/nfsv4/ 1479 1480 If unsure, say N. 1481 1482config RPCSEC_GSS_SPKM3 1483 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 1484 depends on SUNRPC && EXPERIMENTAL 1485 select SUNRPC_GSS 1486 select CRYPTO 1487 select CRYPTO_MD5 1488 select CRYPTO_DES 1489 help 1490 Provides for secure RPC calls by means of a gss-api 1491 mechanism based on the SPKM3 public-key mechanism. 1492 1493 Note: Requires an auxiliary userspace daemon which may be found on 1494 http://www.citi.umich.edu/projects/nfsv4/ 1495 1496 If unsure, say N. 1497 1498config SMB_FS 1499 tristate "SMB file system support (to mount Windows shares etc.)" 1500 depends on INET 1501 select NLS 1502 help 1503 SMB (Server Message Block) is the protocol Windows for Workgroups 1504 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1505 files and printers over local networks. Saying Y here allows you to 1506 mount their file systems (often called "shares" in this context) and 1507 access them just like any other Unix directory. Currently, this 1508 works only if the Windows machines use TCP/IP as the underlying 1509 transport protocol, and not NetBEUI. For details, read 1510 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1511 available from <http://www.tldp.org/docs.html#howto>. 1512 1513 Note: if you just want your box to act as an SMB *server* and make 1514 files and printing services available to Windows clients (which need 1515 to have a TCP/IP stack), you don't need to say Y here; you can use 1516 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1517 for that. 1518 1519 General information about how to connect Linux, Windows machines and 1520 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1521 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 1525config SMB_NLS_DEFAULT 1526 bool "Use a default NLS" 1527 depends on SMB_FS 1528 help 1529 Enabling this will make smbfs use nls translations by default. You 1530 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1531 settings and you need to give the default nls for the SMB server as 1532 CONFIG_SMB_NLS_REMOTE. 1533 1534 The nls settings can be changed at mount time, if your smbmount 1535 supports that, using the codepage and iocharset parameters. 1536 1537 smbmount from samba 2.2.0 or later supports this. 1538 1539config SMB_NLS_REMOTE 1540 string "Default Remote NLS Option" 1541 depends on SMB_NLS_DEFAULT 1542 default "cp437" 1543 help 1544 This setting allows you to specify a default value for which 1545 codepage the server uses. If this field is left blank no 1546 translations will be done by default. The local codepage/charset 1547 default to CONFIG_NLS_DEFAULT. 1548 1549 The nls settings can be changed at mount time, if your smbmount 1550 supports that, using the codepage and iocharset parameters. 1551 1552 smbmount from samba 2.2.0 or later supports this. 1553 1554config CIFS 1555 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 1556 depends on INET 1557 select NLS 1558 help 1559 This is the client VFS module for the Common Internet File System 1560 (CIFS) protocol which is the successor to the Server Message Block 1561 (SMB) protocol, the native file sharing mechanism for most early 1562 PC operating systems. The CIFS protocol is fully supported by 1563 file servers such as Windows 2000 (including Windows 2003, NT 4 1564 and Windows XP) as well by Samba (which provides excellent CIFS 1565 server support for Linux and many other operating systems). Currently 1566 you must use the smbfs client filesystem to access older SMB servers 1567 such as Windows 9x and OS/2. 1568 1569 The intent of the cifs module is to provide an advanced 1570 network file system client for mounting to CIFS compliant servers, 1571 including support for dfs (hierarchical name space), secure per-user 1572 session establishment, safe distributed caching (oplock), optional 1573 packet signing, Unicode and other internationalization improvements, 1574 and optional Winbind (nsswitch) integration. You do not need to enable 1575 cifs if running only a (Samba) server. It is possible to enable both 1576 smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003 1577 and Samba 3 servers, and smbfs for accessing old servers). If you need 1578 to mount to Samba or Windows 2003 servers from this machine, say Y. 1579 1580config CIFS_STATS 1581 bool "CIFS statistics" 1582 depends on CIFS 1583 help 1584 Enabling this option will cause statistics for each server share 1585 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 1586 1587config CIFS_XATTR 1588 bool "CIFS extended attributes (EXPERIMENTAL)" 1589 depends on CIFS 1590 help 1591 Extended attributes are name:value pairs associated with inodes by 1592 the kernel or by users (see the attr(5) manual page, or visit 1593 <http://acl.bestbits.at/> for details). CIFS maps the name of 1594 extended attributes beginning with the user namespace prefix 1595 to SMB/CIFS EAs. EAs are stored on Windows servers without the 1596 user namespace prefix, but their names are seen by Linux cifs clients 1597 prefaced by the user namespace prefix. The system namespace 1598 (used by some filesystems to store ACLs) is not supported at 1599 this time. 1600 1601 If unsure, say N. 1602 1603config CIFS_POSIX 1604 bool "CIFS POSIX Extensions (EXPERIMENTAL)" 1605 depends on CIFS_XATTR 1606 help 1607 Enabling this option will cause the cifs client to attempt to 1608 negotiate a newer dialect with servers, such as Samba 3.0.5 1609 or later, that optionally can handle more POSIX like (rather 1610 than Windows like) file behavior. It also enables 1611 support for POSIX ACLs (getfacl and setfacl) to servers 1612 (such as Samba 3.10 and later) which can negotiate 1613 CIFS POSIX ACL support. If unsure, say N. 1614 1615config CIFS_EXPERIMENTAL 1616 bool "CIFS Experimental Features (EXPERIMENTAL)" 1617 depends on CIFS 1618 help 1619 Enables cifs features under testing. These features 1620 are highly experimental. If unsure, say N. 1621 1622config NCP_FS 1623 tristate "NCP file system support (to mount NetWare volumes)" 1624 depends on IPX!=n || INET 1625 help 1626 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 1627 used by Novell NetWare clients to talk to file servers. It is to 1628 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 1629 to mount NetWare file server volumes and to access them just like 1630 any other Unix directory. For details, please read the file 1631 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 1632 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 1633 1634 You do not have to say Y here if you want your Linux box to act as a 1635 file *server* for Novell NetWare clients. 1636 1637 General information about how to connect Linux, Windows machines and 1638 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1639 1640 To compile this as a module, choose M here: the module will be called 1641 ncpfs. Say N unless you are connected to a Novell network. 1642 1643source "fs/ncpfs/Kconfig" 1644 1645config CODA_FS 1646 tristate "Coda file system support (advanced network fs)" 1647 depends on INET 1648 help 1649 Coda is an advanced network file system, similar to NFS in that it 1650 enables you to mount file systems of a remote server and access them 1651 with regular Unix commands as if they were sitting on your hard 1652 disk. Coda has several advantages over NFS: support for 1653 disconnected operation (e.g. for laptops), read/write server 1654 replication, security model for authentication and encryption, 1655 persistent client caches and write back caching. 1656 1657 If you say Y here, your Linux box will be able to act as a Coda 1658 *client*. You will need user level code as well, both for the 1659 client and server. Servers are currently user level, i.e. they need 1660 no kernel support. Please read 1661 <file:Documentation/filesystems/coda.txt> and check out the Coda 1662 home page <http://www.coda.cs.cmu.edu/>. 1663 1664 To compile the coda client support as a module, choose M here: the 1665 module will be called coda. 1666 1667config CODA_FS_OLD_API 1668 bool "Use 96-bit Coda file identifiers" 1669 depends on CODA_FS 1670 help 1671 A new kernel-userspace API had to be introduced for Coda v6.0 1672 to support larger 128-bit file identifiers as needed by the 1673 new realms implementation. 1674 1675 However this new API is not backward compatible with older 1676 clients. If you really need to run the old Coda userspace 1677 cache manager then say Y. 1678 1679 For most cases you probably want to say N. 1680 1681config AFS_FS 1682# for fs/nls/Config.in 1683 tristate "Andrew File System support (AFS) (Experimental)" 1684 depends on INET && EXPERIMENTAL 1685 select RXRPC 1686 help 1687 If you say Y here, you will get an experimental Andrew File System 1688 driver. It currently only supports unsecured read-only AFS access. 1689 1690 See <file:Documentation/filesystems/afs.txt> for more intormation. 1691 1692 If unsure, say N. 1693 1694config RXRPC 1695 tristate 1696 1697endmenu 1698 1699menu "Partition Types" 1700 1701source "fs/partitions/Kconfig" 1702 1703endmenu 1704 1705source "fs/nls/Kconfig" 1706 1707endmenu 1708 1709