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. 386 For further details, read the Quota mini-HOWTO, available from 387 <http://www.tldp.org/docs.html#howto>, or the documentation provided 388 with the quota tools. Probably the quota support is only useful for 389 multi user systems. If unsure, say N. 390 391config QFMT_V1 392 tristate "Old quota format support" 393 depends on QUOTA 394 help 395 This quota format was (is) used by kernels earlier than 2.4.22. If 396 you have quota working and you don't want to convert to new quota 397 format say Y here. 398 399config QFMT_V2 400 tristate "Quota format v2 support" 401 depends on QUOTA 402 help 403 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 404 need this functionality say Y here. 405 406config QUOTACTL 407 bool 408 depends on XFS_QUOTA || QUOTA 409 default y 410 411config DNOTIFY 412 bool "Dnotify support" if EMBEDDED 413 default y 414 help 415 Dnotify is a directory-based per-fd file change notification system 416 that uses signals to communicate events to user-space. There exist 417 superior alternatives, but some applications may still rely on 418 dnotify. 419 420 Because of this, if unsure, say Y. 421 422config AUTOFS_FS 423 tristate "Kernel automounter support" 424 help 425 The automounter is a tool to automatically mount remote file systems 426 on demand. This implementation is partially kernel-based to reduce 427 overhead in the already-mounted case; this is unlike the BSD 428 automounter (amd), which is a pure user space daemon. 429 430 To use the automounter you need the user-space tools from the autofs 431 package; you can find the location in <file:Documentation/Changes>. 432 You also want to answer Y to "NFS file system support", below. 433 434 If you want to use the newer version of the automounter with more 435 features, say N here and say Y to "Kernel automounter v4 support", 436 below. 437 438 To compile this support as a module, choose M here: the module will be 439 called autofs. 440 441 If you are not a part of a fairly large, distributed network, you 442 probably do not need an automounter, and can say N here. 443 444config AUTOFS4_FS 445 tristate "Kernel automounter version 4 support (also supports v3)" 446 help 447 The automounter is a tool to automatically mount remote file systems 448 on demand. This implementation is partially kernel-based to reduce 449 overhead in the already-mounted case; this is unlike the BSD 450 automounter (amd), which is a pure user space daemon. 451 452 To use the automounter you need the user-space tools from 453 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 454 want to answer Y to "NFS file system support", below. 455 456 To compile this support as a module, choose M here: the module will be 457 called autofs4. You will need to add "alias autofs autofs4" to your 458 modules configuration file. 459 460 If you are not a part of a fairly large, distributed network or 461 don't have a laptop which needs to dynamically reconfigure to the 462 local network, you probably do not need an automounter, and can say 463 N here. 464 465menu "CD-ROM/DVD Filesystems" 466 467config ISO9660_FS 468 tristate "ISO 9660 CDROM file system support" 469 help 470 This is the standard file system used on CD-ROMs. It was previously 471 known as "High Sierra File System" and is called "hsfs" on other 472 Unix systems. The so-called Rock-Ridge extensions which allow for 473 long Unix filenames and symbolic links are also supported by this 474 driver. If you have a CD-ROM drive and want to do more with it than 475 just listen to audio CDs and watch its LEDs, say Y (and read 476 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 477 available from <http://www.tldp.org/docs.html#howto>), thereby 478 enlarging your kernel by about 27 KB; otherwise say N. 479 480 To compile this file system support as a module, choose M here: the 481 module will be called isofs. 482 483config JOLIET 484 bool "Microsoft Joliet CDROM extensions" 485 depends on ISO9660_FS 486 select NLS 487 help 488 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 489 which allows for long filenames in unicode format (unicode is the 490 new 16 bit character code, successor to ASCII, which encodes the 491 characters of almost all languages of the world; see 492 <http://www.unicode.org/> for more information). Say Y here if you 493 want to be able to read Joliet CD-ROMs under Linux. 494 495config ZISOFS 496 bool "Transparent decompression extension" 497 depends on ISO9660_FS 498 select ZLIB_INFLATE 499 help 500 This is a Linux-specific extension to RockRidge which lets you store 501 data in compressed form on a CD-ROM and have it transparently 502 decompressed when the CD-ROM is accessed. See 503 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 504 necessary to create such a filesystem. Say Y here if you want to be 505 able to read such compressed CD-ROMs. 506 507config ZISOFS_FS 508# for fs/nls/Config.in 509 tristate 510 depends on ZISOFS 511 default ISO9660_FS 512 513config UDF_FS 514 tristate "UDF file system support" 515 help 516 This is the new file system used on some CD-ROMs and DVDs. Say Y if 517 you intend to mount DVD discs or CDRW's written in packet mode, or 518 if written to by other UDF utilities, such as DirectCD. 519 Please read <file:Documentation/filesystems/udf.txt>. 520 521 To compile this file system support as a module, choose M here: the 522 module will be called udf. 523 524 If unsure, say N. 525 526config UDF_NLS 527 bool 528 default y 529 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 530 531endmenu 532 533menu "DOS/FAT/NT Filesystems" 534 535config FAT_FS 536 tristate 537 select NLS 538 help 539 If you want to use one of the FAT-based file systems (the MS-DOS and 540 VFAT (Windows 95) file systems), then you must say Y or M here 541 to include FAT support. You will then be able to mount partitions or 542 diskettes with FAT-based file systems and transparently access the 543 files on them, i.e. MSDOS files will look and behave just like all 544 other Unix files. 545 546 This FAT support is not a file system in itself, it only provides 547 the foundation for the other file systems. You will have to say Y or 548 M to at least one of "MSDOS fs support" or "VFAT fs support" in 549 order to make use of it. 550 551 Another way to read and write MSDOS floppies and hard drive 552 partitions from within Linux (but not transparently) is with the 553 mtools ("man mtools") program suite. You don't need to say Y here in 554 order to do that. 555 556 If you need to move large files on floppies between a DOS and a 557 Linux box, say Y here, mount the floppy under Linux with an MSDOS 558 file system and use GNU tar's M option. GNU tar is a program 559 available for Unix and DOS ("man tar" or "info tar"). 560 561 It is now also becoming possible to read and write compressed FAT 562 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for 563 details. 564 565 The FAT support will enlarge your kernel by about 37 KB. If unsure, 566 say Y. 567 568 To compile this as a module, choose M here: the module will be called 569 fat. Note that if you compile the FAT support as a module, you 570 cannot compile any of the FAT-based file systems into the kernel 571 -- they will have to be modules as well. 572 573config MSDOS_FS 574 tristate "MSDOS fs support" 575 select FAT_FS 576 help 577 This allows you to mount MSDOS partitions of your hard drive (unless 578 they are compressed; to access compressed MSDOS partitions under 579 Linux, you can either use the DOS emulator DOSEMU, described in the 580 DOSEMU-HOWTO, available from 581 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 582 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 583 intend to use dosemu with a non-compressed MSDOS partition, say Y 584 here) and MSDOS floppies. This means that file access becomes 585 transparent, i.e. the MSDOS files look and behave just like all 586 other Unix files. 587 588 If you have Windows 95 or Windows NT installed on your MSDOS 589 partitions, you should use the VFAT file system (say Y to "VFAT fs 590 support" below), or you will not be able to see the long filenames 591 generated by Windows 95 / Windows NT. 592 593 This option will enlarge your kernel by about 7 KB. If unsure, 594 answer Y. This will only work if you said Y to "DOS FAT fs support" 595 as well. To compile this as a module, choose M here: the module will 596 be called msdos. 597 598config VFAT_FS 599 tristate "VFAT (Windows-95) fs support" 600 select FAT_FS 601 help 602 This option provides support for normal Windows file systems with 603 long filenames. That includes non-compressed FAT-based file systems 604 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 605 programs from the mtools package. 606 607 The VFAT support enlarges your kernel by about 10 KB and it only 608 works if you said Y to the "DOS FAT fs support" above. Please read 609 the file <file:Documentation/filesystems/vfat.txt> for details. If 610 unsure, say Y. 611 612 To compile this as a module, choose M here: the module will be called 613 vfat. 614 615config FAT_DEFAULT_CODEPAGE 616 int "Default codepage for FAT" 617 depends on MSDOS_FS || VFAT_FS 618 default 437 619 help 620 This option should be set to the codepage of your FAT filesystems. 621 It can be overridden with the "codepage" mount option. 622 See <file:Documentation/filesystems/vfat.txt> for more information. 623 624config FAT_DEFAULT_IOCHARSET 625 string "Default iocharset for FAT" 626 depends on VFAT_FS 627 default "iso8859-1" 628 help 629 Set this to the default input/output character set you'd 630 like FAT to use. It should probably match the character set 631 that most of your FAT filesystems use, and can be overridden 632 with the "iocharset" mount option for FAT filesystems. 633 Note that "utf8" is not recommended for FAT filesystems. 634 If unsure, you shouldn't set "utf8" here. 635 See <file:Documentation/filesystems/vfat.txt> for more information. 636 637config NTFS_FS 638 tristate "NTFS file system support" 639 select NLS 640 help 641 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 642 643 Saying Y or M here enables read support. There is partial, but 644 safe, write support available. For write support you must also 645 say Y to "NTFS write support" below. 646 647 There are also a number of user-space tools available, called 648 ntfsprogs. These include ntfsundelete and ntfsresize, that work 649 without NTFS support enabled in the kernel. 650 651 This is a rewrite from scratch of Linux NTFS support and replaced 652 the old NTFS code starting with Linux 2.5.11. A backport to 653 the Linux 2.4 kernel series is separately available as a patch 654 from the project web site. 655 656 For more information see <file:Documentation/filesystems/ntfs.txt> 657 and <http://linux-ntfs.sourceforge.net/>. 658 659 To compile this file system support as a module, choose M here: the 660 module will be called ntfs. 661 662 If you are not using Windows NT, 2000, XP or 2003 in addition to 663 Linux on your computer it is safe to say N. 664 665config NTFS_DEBUG 666 bool "NTFS debugging support" 667 depends on NTFS_FS 668 help 669 If you are experiencing any problems with the NTFS file system, say 670 Y here. This will result in additional consistency checks to be 671 performed by the driver as well as additional debugging messages to 672 be written to the system log. Note that debugging messages are 673 disabled by default. To enable them, supply the option debug_msgs=1 674 at the kernel command line when booting the kernel or as an option 675 to insmod when loading the ntfs module. Once the driver is active, 676 you can enable debugging messages by doing (as root): 677 echo 1 > /proc/sys/fs/ntfs-debug 678 Replacing the "1" with "0" would disable debug messages. 679 680 If you leave debugging messages disabled, this results in little 681 overhead, but enabling debug messages results in very significant 682 slowdown of the system. 683 684 When reporting bugs, please try to have available a full dump of 685 debugging messages while the misbehaviour was occurring. 686 687config NTFS_RW 688 bool "NTFS write support" 689 depends on NTFS_FS 690 help 691 This enables the partial, but safe, write support in the NTFS driver. 692 693 The only supported operation is overwriting existing files, without 694 changing the file length. No file or directory creation, deletion or 695 renaming is possible. Note only non-resident files can be written to 696 so you may find that some very small files (<500 bytes or so) cannot 697 be written to. 698 699 While we cannot guarantee that it will not damage any data, we have 700 so far not received a single report where the driver would have 701 damaged someones data so we assume it is perfectly safe to use. 702 703 Note: While write support is safe in this version (a rewrite from 704 scratch of the NTFS support), it should be noted that the old NTFS 705 write support, included in Linux 2.5.10 and before (since 1997), 706 is not safe. 707 708 This is currently useful with TopologiLinux. TopologiLinux is run 709 on top of any DOS/Microsoft Windows system without partitioning your 710 hard disk. Unlike other Linux distributions TopologiLinux does not 711 need its own partition. For more information see 712 <http://topologi-linux.sourceforge.net/> 713 714 It is perfectly safe to say N here. 715 716endmenu 717 718menu "Pseudo filesystems" 719 720config PROC_FS 721 bool "/proc file system support" 722 help 723 This is a virtual file system providing information about the status 724 of the system. "Virtual" means that it doesn't take up any space on 725 your hard disk: the files are created on the fly by the kernel when 726 you try to access them. Also, you cannot read the files with older 727 version of the program less: you need to use more or cat. 728 729 It's totally cool; for example, "cat /proc/interrupts" gives 730 information about what the different IRQs are used for at the moment 731 (there is a small number of Interrupt ReQuest lines in your computer 732 that are used by the attached devices to gain the CPU's attention -- 733 often a source of trouble if two devices are mistakenly configured 734 to use the same IRQ). The program procinfo to display some 735 information about your system gathered from the /proc file system. 736 737 Before you can use the /proc file system, it has to be mounted, 738 meaning it has to be given a location in the directory hierarchy. 739 That location should be /proc. A command such as "mount -t proc proc 740 /proc" or the equivalent line in /etc/fstab does the job. 741 742 The /proc file system is explained in the file 743 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 744 ("man 5 proc"). 745 746 This option will enlarge your kernel by about 67 KB. Several 747 programs depend on this, so everyone should say Y here. 748 749config PROC_KCORE 750 bool "/proc/kcore support" if !ARM 751 depends on PROC_FS && MMU 752 753config PROC_VMCORE 754 bool "/proc/vmcore support (EXPERIMENTAL)" 755 depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP 756 help 757 Exports the dump image of crashed kernel in ELF format. 758 759config SYSFS 760 bool "sysfs file system support" if EMBEDDED 761 default y 762 help 763 The sysfs filesystem is a virtual filesystem that the kernel uses to 764 export internal kernel objects, their attributes, and their 765 relationships to one another. 766 767 Users can use sysfs to ascertain useful information about the running 768 kernel, such as the devices the kernel has discovered on each bus and 769 which driver each is bound to. sysfs can also be used to tune devices 770 and other kernel subsystems. 771 772 Some system agents rely on the information in sysfs to operate. 773 /sbin/hotplug uses device and object attributes in sysfs to assist in 774 delegating policy decisions, like persistantly naming devices. 775 776 sysfs is currently used by the block subsystem to mount the root 777 partition. If sysfs is disabled you must specify the boot device on 778 the kernel boot command line via its major and minor numbers. For 779 example, "root=03:01" for /dev/hda1. 780 781 Designers of embedded systems may wish to say N here to conserve space. 782 783config TMPFS 784 bool "Virtual memory file system support (former shm fs)" 785 help 786 Tmpfs is a file system which keeps all files in virtual memory. 787 788 Everything in tmpfs is temporary in the sense that no files will be 789 created on your hard drive. The files live in memory and swap 790 space. If you unmount a tmpfs instance, everything stored therein is 791 lost. 792 793 See <file:Documentation/filesystems/tmpfs.txt> for details. 794 795config HUGETLBFS 796 bool "HugeTLB file system support" 797 depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN 798 799config HUGETLB_PAGE 800 def_bool HUGETLBFS 801 802config RAMFS 803 bool 804 default y 805 ---help--- 806 Ramfs is a file system which keeps all files in RAM. It allows 807 read and write access. 808 809 It is more of an programming example than a useable file system. If 810 you need a file system which lives in RAM with limit checking use 811 tmpfs. 812 813 To compile this as a module, choose M here: the module will be called 814 ramfs. 815 816config RELAYFS_FS 817 tristate "Relayfs file system support" 818 ---help--- 819 Relayfs is a high-speed data relay filesystem designed to provide 820 an efficient mechanism for tools and facilities to relay large 821 amounts of data from kernel space to user space. 822 823 To compile this code as a module, choose M here: the module will be 824 called relayfs. 825 826 If unsure, say N. 827 828endmenu 829 830menu "Miscellaneous filesystems" 831 832config ADFS_FS 833 tristate "ADFS file system support (EXPERIMENTAL)" 834 depends on EXPERIMENTAL 835 help 836 The Acorn Disc Filing System is the standard file system of the 837 RiscOS operating system which runs on Acorn's ARM-based Risc PC 838 systems and the Acorn Archimedes range of machines. If you say Y 839 here, Linux will be able to read from ADFS partitions on hard drives 840 and from ADFS-formatted floppy discs. If you also want to be able to 841 write to those devices, say Y to "ADFS write support" below. 842 843 The ADFS partition should be the first partition (i.e., 844 /dev/[hs]d?1) on each of your drives. Please read the file 845 <file:Documentation/filesystems/adfs.txt> for further details. 846 847 To compile this code as a module, choose M here: the module will be 848 called adfs. 849 850 If unsure, say N. 851 852config ADFS_FS_RW 853 bool "ADFS write support (DANGEROUS)" 854 depends on ADFS_FS 855 help 856 If you say Y here, you will be able to write to ADFS partitions on 857 hard drives and ADFS-formatted floppy disks. This is experimental 858 codes, so if you're unsure, say N. 859 860config AFFS_FS 861 tristate "Amiga FFS file system support (EXPERIMENTAL)" 862 depends on EXPERIMENTAL 863 help 864 The Fast File System (FFS) is the common file system used on hard 865 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 866 if you want to be able to read and write files from and to an Amiga 867 FFS partition on your hard drive. Amiga floppies however cannot be 868 read with this driver due to an incompatibility of the floppy 869 controller used in an Amiga and the standard floppy controller in 870 PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 871 and <file:fs/affs/Changes>. 872 873 With this driver you can also mount disk files used by Bernd 874 Schmidt's Un*X Amiga Emulator 875 (<http://www.freiburg.linux.de/~uae/>). 876 If you want to do this, you will also need to say Y or M to "Loop 877 device support", above. 878 879 To compile this file system support as a module, choose M here: the 880 module will be called affs. If unsure, say N. 881 882config HFS_FS 883 tristate "Apple Macintosh file system support (EXPERIMENTAL)" 884 depends on EXPERIMENTAL 885 help 886 If you say Y here, you will be able to mount Macintosh-formatted 887 floppy disks and hard drive partitions with full read-write access. 888 Please read <file:fs/hfs/HFS.txt> to learn about the available mount 889 options. 890 891 To compile this file system support as a module, choose M here: the 892 module will be called hfs. 893 894config HFSPLUS_FS 895 tristate "Apple Extended HFS file system support" 896 select NLS 897 select NLS_UTF8 898 help 899 If you say Y here, you will be able to mount extended format 900 Macintosh-formatted hard drive partitions with full read-write access. 901 902 This file system is often called HFS+ and was introduced with 903 MacOS 8. It includes all Mac specific filesystem data such as 904 data forks and creator codes, but it also has several UNIX 905 style features such as file ownership and permissions. 906 907config BEFS_FS 908 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 909 depends on EXPERIMENTAL 910 select NLS 911 help 912 The BeOS File System (BeFS) is the native file system of Be, Inc's 913 BeOS. Notable features include support for arbitrary attributes 914 on files and directories, and database-like indeces on selected 915 attributes. (Also note that this driver doesn't make those features 916 available at this time). It is a 64 bit filesystem, so it supports 917 extremly large volumes and files. 918 919 If you use this filesystem, you should also say Y to at least one 920 of the NLS (native language support) options below. 921 922 If you don't know what this is about, say N. 923 924 To compile this as a module, choose M here: the module will be 925 called befs. 926 927config BEFS_DEBUG 928 bool "Debug BeFS" 929 depends on BEFS_FS 930 help 931 If you say Y here, you can use the 'debug' mount option to enable 932 debugging output from the driver. 933 934config BFS_FS 935 tristate "BFS file system support (EXPERIMENTAL)" 936 depends on EXPERIMENTAL 937 help 938 Boot File System (BFS) is a file system used under SCO UnixWare to 939 allow the bootloader access to the kernel image and other important 940 files during the boot process. It is usually mounted under /stand 941 and corresponds to the slice marked as "STAND" in the UnixWare 942 partition. You should say Y if you want to read or write the files 943 on your /stand slice from within Linux. You then also need to say Y 944 to "UnixWare slices support", below. More information about the BFS 945 file system is contained in the file 946 <file:Documentation/filesystems/bfs.txt>. 947 948 If you don't know what this is about, say N. 949 950 To compile this as a module, choose M here: the module will be called 951 bfs. Note that the file system of your root partition (the one 952 containing the directory /) cannot be compiled as a module. 953 954 955 956config EFS_FS 957 tristate "EFS file system support (read only) (EXPERIMENTAL)" 958 depends on EXPERIMENTAL 959 help 960 EFS is an older file system used for non-ISO9660 CD-ROMs and hard 961 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 962 uses the XFS file system for hard disk partitions however). 963 964 This implementation only offers read-only access. If you don't know 965 what all this is about, it's safe to say N. For more information 966 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 967 968 To compile the EFS file system support as a module, choose M here: the 969 module will be called efs. 970 971config JFFS_FS 972 tristate "Journalling Flash File System (JFFS) support" 973 depends on MTD 974 help 975 JFFS is the Journaling Flash File System developed by Axis 976 Communications in Sweden, aimed at providing a crash/powerdown-safe 977 file system for disk-less embedded devices. Further information is 978 available at (<http://developer.axis.com/software/jffs/>). 979 980config JFFS_FS_VERBOSE 981 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)" 982 depends on JFFS_FS 983 default "0" 984 help 985 Determines the verbosity level of the JFFS debugging messages. 986 987config JFFS_PROC_FS 988 bool "JFFS stats available in /proc filesystem" 989 depends on JFFS_FS && PROC_FS 990 help 991 Enabling this option will cause statistics from mounted JFFS file systems 992 to be made available to the user in the /proc/fs/jffs/ directory. 993 994config JFFS2_FS 995 tristate "Journalling Flash File System v2 (JFFS2) support" 996 select CRC32 997 depends on MTD 998 help 999 JFFS2 is the second generation of the Journalling Flash File System 1000 for use on diskless embedded devices. It provides improved wear 1001 levelling, compression and support for hard links. You cannot use 1002 this on normal block devices, only on 'MTD' devices. 1003 1004 Further information on the design and implementation of JFFS2 is 1005 available at <http://sources.redhat.com/jffs2/>. 1006 1007config JFFS2_FS_DEBUG 1008 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 1009 depends on JFFS2_FS 1010 default "0" 1011 help 1012 This controls the amount of debugging messages produced by the JFFS2 1013 code. Set it to zero for use in production systems. For evaluation, 1014 testing and debugging, it's advisable to set it to one. This will 1015 enable a few assertions and will print debugging messages at the 1016 KERN_DEBUG loglevel, where they won't normally be visible. Level 2 1017 is unlikely to be useful - it enables extra debugging in certain 1018 areas which at one point needed debugging, but when the bugs were 1019 located and fixed, the detailed messages were relegated to level 2. 1020 1021 If reporting bugs, please try to have available a full dump of the 1022 messages at debug level 1 while the misbehaviour was occurring. 1023 1024config JFFS2_FS_WRITEBUFFER 1025 bool "JFFS2 write-buffering support" 1026 depends on JFFS2_FS 1027 default y 1028 help 1029 This enables the write-buffering support in JFFS2. 1030 1031 This functionality is required to support JFFS2 on the following 1032 types of flash devices: 1033 - NAND flash 1034 - NOR flash with transparent ECC 1035 - DataFlash 1036 1037config JFFS2_COMPRESSION_OPTIONS 1038 bool "Advanced compression options for JFFS2" 1039 depends on JFFS2_FS 1040 default n 1041 help 1042 Enabling this option allows you to explicitly choose which 1043 compression modules, if any, are enabled in JFFS2. Removing 1044 compressors and mean you cannot read existing file systems, 1045 and enabling experimental compressors can mean that you 1046 write a file system which cannot be read by a standard kernel. 1047 1048 If unsure, you should _definitely_ say 'N'. 1049 1050config JFFS2_ZLIB 1051 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 1052 select ZLIB_INFLATE 1053 select ZLIB_DEFLATE 1054 depends on JFFS2_FS 1055 default y 1056 help 1057 Zlib is designed to be a free, general-purpose, legally unencumbered, 1058 lossless data-compression library for use on virtually any computer 1059 hardware and operating system. See <http://www.gzip.org/zlib/> for 1060 further information. 1061 1062 Say 'Y' if unsure. 1063 1064config JFFS2_RTIME 1065 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 1066 depends on JFFS2_FS 1067 default y 1068 help 1069 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 1070 1071config JFFS2_RUBIN 1072 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 1073 depends on JFFS2_FS 1074 default n 1075 help 1076 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 1077 1078choice 1079 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 1080 default JFFS2_CMODE_PRIORITY 1081 depends on JFFS2_FS 1082 help 1083 You can set here the default compression mode of JFFS2 from 1084 the available compression modes. Don't touch if unsure. 1085 1086config JFFS2_CMODE_NONE 1087 bool "no compression" 1088 help 1089 Uses no compression. 1090 1091config JFFS2_CMODE_PRIORITY 1092 bool "priority" 1093 help 1094 Tries the compressors in a predefinied order and chooses the first 1095 successful one. 1096 1097config JFFS2_CMODE_SIZE 1098 bool "size (EXPERIMENTAL)" 1099 help 1100 Tries all compressors and chooses the one which has the smallest 1101 result. 1102 1103endchoice 1104 1105config CRAMFS 1106 tristate "Compressed ROM file system support (cramfs)" 1107 select ZLIB_INFLATE 1108 help 1109 Saying Y here includes support for CramFs (Compressed ROM File 1110 System). CramFs is designed to be a simple, small, and compressed 1111 file system for ROM based embedded systems. CramFs is read-only, 1112 limited to 256MB file systems (with 16MB files), and doesn't support 1113 16/32 bits uid/gid, hard links and timestamps. 1114 1115 See <file:Documentation/filesystems/cramfs.txt> and 1116 <file:fs/cramfs/README> for further information. 1117 1118 To compile this as a module, choose M here: the module will be called 1119 cramfs. Note that the root file system (the one containing the 1120 directory /) cannot be compiled as a module. 1121 1122 If unsure, say N. 1123 1124config VXFS_FS 1125 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 1126 help 1127 FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 1128 file system format. VERITAS VxFS(TM) is the standard file system 1129 of SCO UnixWare (and possibly others) and optionally available 1130 for Sunsoft Solaris, HP-UX and many other operating systems. 1131 Currently only readonly access is supported. 1132 1133 NOTE: the file system type as used by mount(1), mount(2) and 1134 fstab(5) is 'vxfs' as it describes the file system format, not 1135 the actual driver. 1136 1137 To compile this as a module, choose M here: the module will be 1138 called freevxfs. If unsure, say N. 1139 1140 1141config HPFS_FS 1142 tristate "OS/2 HPFS file system support" 1143 help 1144 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1145 is the file system used for organizing files on OS/2 hard disk 1146 partitions. Say Y if you want to be able to read files from and 1147 write files to an OS/2 HPFS partition on your hard drive. OS/2 1148 floppies however are in regular MSDOS format, so you don't need this 1149 option in order to be able to read them. Read 1150 <file:Documentation/filesystems/hpfs.txt>. 1151 1152 To compile this file system support as a module, choose M here: the 1153 module will be called hpfs. If unsure, say N. 1154 1155 1156 1157config QNX4FS_FS 1158 tristate "QNX4 file system support (read only)" 1159 help 1160 This is the file system used by the real-time operating systems 1161 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1162 Further information is available at <http://www.qnx.com/>. 1163 Say Y if you intend to mount QNX hard disks or floppies. 1164 Unless you say Y to "QNX4FS read-write support" below, you will 1165 only be able to read these file systems. 1166 1167 To compile this file system support as a module, choose M here: the 1168 module will be called qnx4. 1169 1170 If you don't know whether you need it, then you don't need it: 1171 answer N. 1172 1173config QNX4FS_RW 1174 bool "QNX4FS write support (DANGEROUS)" 1175 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 1176 help 1177 Say Y if you want to test write support for QNX4 file systems. 1178 1179 It's currently broken, so for now: 1180 answer N. 1181 1182 1183 1184config SYSV_FS 1185 tristate "System V/Xenix/V7/Coherent file system support" 1186 help 1187 SCO, Xenix and Coherent are commercial Unix systems for Intel 1188 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1189 here would allow you to read from their floppies and hard disk 1190 partitions. 1191 1192 If you have floppies or hard disk partitions like that, it is likely 1193 that they contain binaries from those other Unix systems; in order 1194 to run these binaries, you will want to install linux-abi which is a 1195 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1196 UnixWare, Dell Unix and System V programs under Linux. It is 1197 available via FTP (user: ftp) from 1198 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1199 NOTE: that will work only for binaries from Intel-based systems; 1200 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1201 1202 If you only intend to mount files from some other Unix over the 1203 network using NFS, you don't need the System V file system support 1204 (but you need NFS file system support obviously). 1205 1206 Note that this option is generally not needed for floppies, since a 1207 good portable way to transport files and directories between unixes 1208 (and even other operating systems) is given by the tar program ("man 1209 tar" or preferably "info tar"). Note also that this option has 1210 nothing whatsoever to do with the option "System V IPC". Read about 1211 the System V file system in 1212 <file:Documentation/filesystems/sysv-fs.txt>. 1213 Saying Y here will enlarge your kernel by about 27 KB. 1214 1215 To compile this as a module, choose M here: the module will be called 1216 sysv. 1217 1218 If you haven't heard about all of this before, it's safe to say N. 1219 1220 1221 1222config UFS_FS 1223 tristate "UFS file system support (read only)" 1224 help 1225 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1226 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1227 Unixes can create and mount hard disk partitions and diskettes using 1228 this file system as well. Saying Y here will allow you to read from 1229 these partitions; if you also want to write to them, say Y to the 1230 experimental "UFS file system write support", below. Please read the 1231 file <file:Documentation/filesystems/ufs.txt> for more information. 1232 1233 The recently released UFS2 variant (used in FreeBSD 5.x) is 1234 READ-ONLY supported. 1235 1236 If you only intend to mount files from some other Unix over the 1237 network using NFS, you don't need the UFS file system support (but 1238 you need NFS file system support obviously). 1239 1240 Note that this option is generally not needed for floppies, since a 1241 good portable way to transport files and directories between unixes 1242 (and even other operating systems) is given by the tar program ("man 1243 tar" or preferably "info tar"). 1244 1245 When accessing NeXTstep files, you may need to convert them from the 1246 NeXT character set to the Latin1 character set; use the program 1247 recode ("info recode") for this purpose. 1248 1249 To compile the UFS file system support as a module, choose M here: the 1250 module will be called ufs. 1251 1252 If you haven't heard about all of this before, it's safe to say N. 1253 1254config UFS_FS_WRITE 1255 bool "UFS file system write support (DANGEROUS)" 1256 depends on UFS_FS && EXPERIMENTAL 1257 help 1258 Say Y here if you want to try writing to UFS partitions. This is 1259 experimental, so you should back up your UFS partitions beforehand. 1260 1261endmenu 1262 1263menu "Network File Systems" 1264 depends on NET 1265 1266config NFS_FS 1267 tristate "NFS file system support" 1268 depends on INET 1269 select LOCKD 1270 select SUNRPC 1271 select NFS_ACL_SUPPORT if NFS_V3_ACL 1272 help 1273 If you are connected to some other (usually local) Unix computer 1274 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 1275 on that computer (the NFS server) using the Network File Sharing 1276 protocol, say Y. "Mounting files" means that the client can access 1277 the files with usual UNIX commands as if they were sitting on the 1278 client's hard disk. For this to work, the server must run the 1279 programs nfsd and mountd (but does not need to have NFS file system 1280 support enabled in its kernel). NFS is explained in the Network 1281 Administrator's Guide, available from 1282 <http://www.tldp.org/docs.html#guide>, on its man page: "man 1283 nfs", and in the NFS-HOWTO. 1284 1285 A superior but less widely used alternative to NFS is provided by 1286 the Coda file system; see "Coda file system support" below. 1287 1288 If you say Y here, you should have said Y to TCP/IP networking also. 1289 This option would enlarge your kernel by about 27 KB. 1290 1291 To compile this file system support as a module, choose M here: the 1292 module will be called nfs. 1293 1294 If you are configuring a diskless machine which will mount its root 1295 file system over NFS at boot time, say Y here and to "Kernel 1296 level IP autoconfiguration" above and to "Root file system on NFS" 1297 below. You cannot compile this driver as a module in this case. 1298 There are two packages designed for booting diskless machines over 1299 the net: netboot, available from 1300 <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 1301 available from <http://ftp1.sourceforge.net/etherboot/>. 1302 1303 If you don't know what all this is about, say N. 1304 1305config NFS_V3 1306 bool "Provide NFSv3 client support" 1307 depends on NFS_FS 1308 help 1309 Say Y here if you want your NFS client to be able to speak version 1310 3 of the NFS protocol. 1311 1312 If unsure, say Y. 1313 1314config NFS_V3_ACL 1315 bool "Provide client support for the NFSv3 ACL protocol extension" 1316 depends on NFS_V3 1317 help 1318 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1319 Access Control Lists. The server should also be compiled with 1320 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1321 1322 If unsure, say N. 1323 1324config NFS_V4 1325 bool "Provide NFSv4 client support (EXPERIMENTAL)" 1326 depends on NFS_FS && EXPERIMENTAL 1327 select RPCSEC_GSS_KRB5 1328 help 1329 Say Y here if you want your NFS client to be able to speak the newer 1330 version 4 of the NFS protocol. 1331 1332 Note: Requires auxiliary userspace daemons which may be found on 1333 http://www.citi.umich.edu/projects/nfsv4/ 1334 1335 If unsure, say N. 1336 1337config NFS_DIRECTIO 1338 bool "Allow direct I/O on NFS files (EXPERIMENTAL)" 1339 depends on NFS_FS && EXPERIMENTAL 1340 help 1341 This option enables applications to perform uncached I/O on files 1342 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 1343 is set for a file, its data is not cached in the system's page 1344 cache. Data is moved to and from user-level application buffers 1345 directly. Unlike local disk-based file systems, NFS O_DIRECT has 1346 no alignment restrictions. 1347 1348 Unless your program is designed to use O_DIRECT properly, you are 1349 much better off allowing the NFS client to manage data caching for 1350 you. Misusing O_DIRECT can cause poor server performance or network 1351 storms. This kernel build option defaults OFF to avoid exposing 1352 system administrators unwittingly to a potentially hazardous 1353 feature. 1354 1355 For more details on NFS O_DIRECT, see fs/nfs/direct.c. 1356 1357 If unsure, say N. This reduces the size of the NFS client, and 1358 causes open() to return EINVAL if a file residing in NFS is 1359 opened with the O_DIRECT flag. 1360 1361config NFSD 1362 tristate "NFS server support" 1363 depends on INET 1364 select LOCKD 1365 select SUNRPC 1366 select EXPORTFS 1367 select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL 1368 help 1369 If you want your Linux box to act as an NFS *server*, so that other 1370 computers on your local network which support NFS can access certain 1371 directories on your box transparently, you have two options: you can 1372 use the self-contained user space program nfsd, in which case you 1373 should say N here, or you can say Y and use the kernel based NFS 1374 server. The advantage of the kernel based solution is that it is 1375 faster. 1376 1377 In either case, you will need support software; the respective 1378 locations are given in the file <file:Documentation/Changes> in the 1379 NFS section. 1380 1381 If you say Y here, you will get support for version 2 of the NFS 1382 protocol (NFSv2). If you also want NFSv3, say Y to the next question 1383 as well. 1384 1385 Please read the NFS-HOWTO, available from 1386 <http://www.tldp.org/docs.html#howto>. 1387 1388 To compile the NFS server support as a module, choose M here: the 1389 module will be called nfsd. If unsure, say N. 1390 1391config NFSD_V2_ACL 1392 bool 1393 depends on NFSD 1394 1395config NFSD_V3 1396 bool "Provide NFSv3 server support" 1397 depends on NFSD 1398 help 1399 If you would like to include the NFSv3 server as well as the NFSv2 1400 server, say Y here. If unsure, say Y. 1401 1402config NFSD_V3_ACL 1403 bool "Provide server support for the NFSv3 ACL protocol extension" 1404 depends on NFSD_V3 1405 select NFSD_V2_ACL 1406 help 1407 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1408 Access Control Lists on exported file systems. NFS clients should 1409 be compiled with the NFSv3 ACL protocol extension; see the 1410 CONFIG_NFS_V3_ACL option. If unsure, say N. 1411 1412config NFSD_V4 1413 bool "Provide NFSv4 server support (EXPERIMENTAL)" 1414 depends on NFSD_V3 && EXPERIMENTAL 1415 select NFSD_TCP 1416 select CRYPTO_MD5 1417 select CRYPTO 1418 select FS_POSIX_ACL 1419 help 1420 If you would like to include the NFSv4 server as well as the NFSv2 1421 and NFSv3 servers, say Y here. This feature is experimental, and 1422 should only be used if you are interested in helping to test NFSv4. 1423 If unsure, say N. 1424 1425config NFSD_TCP 1426 bool "Provide NFS server over TCP support" 1427 depends on NFSD 1428 default y 1429 help 1430 If you want your NFS server to support TCP connections, say Y here. 1431 TCP connections usually perform better than the default UDP when 1432 the network is lossy or congested. If unsure, say Y. 1433 1434config ROOT_NFS 1435 bool "Root file system on NFS" 1436 depends on NFS_FS=y && IP_PNP 1437 help 1438 If you want your Linux box to mount its whole root file system (the 1439 one containing the directory /) from some other computer over the 1440 net via NFS (presumably because your box doesn't have a hard disk), 1441 say Y. Read <file:Documentation/nfsroot.txt> for details. It is 1442 likely that in this case, you also want to say Y to "Kernel level IP 1443 autoconfiguration" so that your box can discover its network address 1444 at boot time. 1445 1446 Most people say N here. 1447 1448config LOCKD 1449 tristate 1450 1451config LOCKD_V4 1452 bool 1453 depends on NFSD_V3 || NFS_V3 1454 default y 1455 1456config EXPORTFS 1457 tristate 1458 1459config NFS_ACL_SUPPORT 1460 tristate 1461 select FS_POSIX_ACL 1462 1463config NFS_COMMON 1464 bool 1465 depends on NFSD || NFS_FS 1466 default y 1467 1468config SUNRPC 1469 tristate 1470 1471config SUNRPC_GSS 1472 tristate 1473 1474config RPCSEC_GSS_KRB5 1475 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1476 depends on SUNRPC && EXPERIMENTAL 1477 select SUNRPC_GSS 1478 select CRYPTO 1479 select CRYPTO_MD5 1480 select CRYPTO_DES 1481 help 1482 Provides for secure RPC calls by means of a gss-api 1483 mechanism based on Kerberos V5. This is required for 1484 NFSv4. 1485 1486 Note: Requires an auxiliary userspace daemon which may be found on 1487 http://www.citi.umich.edu/projects/nfsv4/ 1488 1489 If unsure, say N. 1490 1491config RPCSEC_GSS_SPKM3 1492 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 1493 depends on SUNRPC && EXPERIMENTAL 1494 select SUNRPC_GSS 1495 select CRYPTO 1496 select CRYPTO_MD5 1497 select CRYPTO_DES 1498 help 1499 Provides for secure RPC calls by means of a gss-api 1500 mechanism based on the SPKM3 public-key mechanism. 1501 1502 Note: Requires an auxiliary userspace daemon which may be found on 1503 http://www.citi.umich.edu/projects/nfsv4/ 1504 1505 If unsure, say N. 1506 1507config SMB_FS 1508 tristate "SMB file system support (to mount Windows shares etc.)" 1509 depends on INET 1510 select NLS 1511 help 1512 SMB (Server Message Block) is the protocol Windows for Workgroups 1513 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1514 files and printers over local networks. Saying Y here allows you to 1515 mount their file systems (often called "shares" in this context) and 1516 access them just like any other Unix directory. Currently, this 1517 works only if the Windows machines use TCP/IP as the underlying 1518 transport protocol, and not NetBEUI. For details, read 1519 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1520 available from <http://www.tldp.org/docs.html#howto>. 1521 1522 Note: if you just want your box to act as an SMB *server* and make 1523 files and printing services available to Windows clients (which need 1524 to have a TCP/IP stack), you don't need to say Y here; you can use 1525 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1526 for that. 1527 1528 General information about how to connect Linux, Windows machines and 1529 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1530 1531 To compile the SMB support as a module, choose M here: the module will 1532 be called smbfs. Most people say N, however. 1533 1534config SMB_NLS_DEFAULT 1535 bool "Use a default NLS" 1536 depends on SMB_FS 1537 help 1538 Enabling this will make smbfs use nls translations by default. You 1539 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1540 settings and you need to give the default nls for the SMB server as 1541 CONFIG_SMB_NLS_REMOTE. 1542 1543 The nls settings can be changed at mount time, if your smbmount 1544 supports that, using the codepage and iocharset parameters. 1545 1546 smbmount from samba 2.2.0 or later supports this. 1547 1548config SMB_NLS_REMOTE 1549 string "Default Remote NLS Option" 1550 depends on SMB_NLS_DEFAULT 1551 default "cp437" 1552 help 1553 This setting allows you to specify a default value for which 1554 codepage the server uses. If this field is left blank no 1555 translations will be done by default. The local codepage/charset 1556 default to CONFIG_NLS_DEFAULT. 1557 1558 The nls settings can be changed at mount time, if your smbmount 1559 supports that, using the codepage and iocharset parameters. 1560 1561 smbmount from samba 2.2.0 or later supports this. 1562 1563config CIFS 1564 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 1565 depends on INET 1566 select NLS 1567 help 1568 This is the client VFS module for the Common Internet File System 1569 (CIFS) protocol which is the successor to the Server Message Block 1570 (SMB) protocol, the native file sharing mechanism for most early 1571 PC operating systems. The CIFS protocol is fully supported by 1572 file servers such as Windows 2000 (including Windows 2003, NT 4 1573 and Windows XP) as well by Samba (which provides excellent CIFS 1574 server support for Linux and many other operating systems). Currently 1575 you must use the smbfs client filesystem to access older SMB servers 1576 such as Windows 9x and OS/2. 1577 1578 The intent of the cifs module is to provide an advanced 1579 network file system client for mounting to CIFS compliant servers, 1580 including support for dfs (hierarchical name space), secure per-user 1581 session establishment, safe distributed caching (oplock), optional 1582 packet signing, Unicode and other internationalization improvements, 1583 and optional Winbind (nsswitch) integration. You do not need to enable 1584 cifs if running only a (Samba) server. It is possible to enable both 1585 smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003 1586 and Samba 3 servers, and smbfs for accessing old servers). If you need 1587 to mount to Samba or Windows 2003 servers from this machine, say Y. 1588 1589config CIFS_STATS 1590 bool "CIFS statistics" 1591 depends on CIFS 1592 help 1593 Enabling this option will cause statistics for each server share 1594 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 1595 1596config CIFS_XATTR 1597 bool "CIFS extended attributes (EXPERIMENTAL)" 1598 depends on CIFS 1599 help 1600 Extended attributes are name:value pairs associated with inodes by 1601 the kernel or by users (see the attr(5) manual page, or visit 1602 <http://acl.bestbits.at/> for details). CIFS maps the name of 1603 extended attributes beginning with the user namespace prefix 1604 to SMB/CIFS EAs. EAs are stored on Windows servers without the 1605 user namespace prefix, but their names are seen by Linux cifs clients 1606 prefaced by the user namespace prefix. The system namespace 1607 (used by some filesystems to store ACLs) is not supported at 1608 this time. 1609 1610 If unsure, say N. 1611 1612config CIFS_POSIX 1613 bool "CIFS POSIX Extensions (EXPERIMENTAL)" 1614 depends on CIFS_XATTR 1615 help 1616 Enabling this option will cause the cifs client to attempt to 1617 negotiate a newer dialect with servers, such as Samba 3.0.5 1618 or later, that optionally can handle more POSIX like (rather 1619 than Windows like) file behavior. It also enables 1620 support for POSIX ACLs (getfacl and setfacl) to servers 1621 (such as Samba 3.10 and later) which can negotiate 1622 CIFS POSIX ACL support. If unsure, say N. 1623 1624config CIFS_EXPERIMENTAL 1625 bool "CIFS Experimental Features (EXPERIMENTAL)" 1626 depends on CIFS 1627 help 1628 Enables cifs features under testing. These features 1629 are highly experimental. If unsure, say N. 1630 1631config NCP_FS 1632 tristate "NCP file system support (to mount NetWare volumes)" 1633 depends on IPX!=n || INET 1634 help 1635 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 1636 used by Novell NetWare clients to talk to file servers. It is to 1637 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 1638 to mount NetWare file server volumes and to access them just like 1639 any other Unix directory. For details, please read the file 1640 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 1641 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 1642 1643 You do not have to say Y here if you want your Linux box to act as a 1644 file *server* for Novell NetWare clients. 1645 1646 General information about how to connect Linux, Windows machines and 1647 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1648 1649 To compile this as a module, choose M here: the module will be called 1650 ncpfs. Say N unless you are connected to a Novell network. 1651 1652source "fs/ncpfs/Kconfig" 1653 1654config CODA_FS 1655 tristate "Coda file system support (advanced network fs)" 1656 depends on INET 1657 help 1658 Coda is an advanced network file system, similar to NFS in that it 1659 enables you to mount file systems of a remote server and access them 1660 with regular Unix commands as if they were sitting on your hard 1661 disk. Coda has several advantages over NFS: support for 1662 disconnected operation (e.g. for laptops), read/write server 1663 replication, security model for authentication and encryption, 1664 persistent client caches and write back caching. 1665 1666 If you say Y here, your Linux box will be able to act as a Coda 1667 *client*. You will need user level code as well, both for the 1668 client and server. Servers are currently user level, i.e. they need 1669 no kernel support. Please read 1670 <file:Documentation/filesystems/coda.txt> and check out the Coda 1671 home page <http://www.coda.cs.cmu.edu/>. 1672 1673 To compile the coda client support as a module, choose M here: the 1674 module will be called coda. 1675 1676config CODA_FS_OLD_API 1677 bool "Use 96-bit Coda file identifiers" 1678 depends on CODA_FS 1679 help 1680 A new kernel-userspace API had to be introduced for Coda v6.0 1681 to support larger 128-bit file identifiers as needed by the 1682 new realms implementation. 1683 1684 However this new API is not backward compatible with older 1685 clients. If you really need to run the old Coda userspace 1686 cache manager then say Y. 1687 1688 For most cases you probably want to say N. 1689 1690config AFS_FS 1691# for fs/nls/Config.in 1692 tristate "Andrew File System support (AFS) (Experimental)" 1693 depends on INET && EXPERIMENTAL 1694 select RXRPC 1695 help 1696 If you say Y here, you will get an experimental Andrew File System 1697 driver. It currently only supports unsecured read-only AFS access. 1698 1699 See <file:Documentation/filesystems/afs.txt> for more intormation. 1700 1701 If unsure, say N. 1702 1703config RXRPC 1704 tristate 1705 1706endmenu 1707 1708menu "Partition Types" 1709 1710source "fs/partitions/Kconfig" 1711 1712endmenu 1713 1714source "fs/nls/Kconfig" 1715 1716endmenu 1717 1718