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 help 33 Posix Access Control Lists (ACLs) support permissions for users and 34 groups beyond the owner/group/world scheme. 35 36 To learn more about Access Control Lists, visit the Posix ACLs for 37 Linux website <http://acl.bestbits.at/>. 38 39 If you don't know what Access Control Lists are, say N 40 41config EXT2_FS_SECURITY 42 bool "Ext2 Security Labels" 43 depends on EXT2_FS_XATTR 44 help 45 Security labels support alternative access control models 46 implemented by security modules like SELinux. This option 47 enables an extended attribute handler for file security 48 labels in the ext2 filesystem. 49 50 If you are not using a security module that requires using 51 extended attributes for file security labels, say N. 52 53config EXT2_FS_XIP 54 bool "Ext2 execute in place support" 55 depends on EXT2_FS 56 help 57 Execute in place can be used on memory-backed block devices. If you 58 enable this option, you can select to mount block devices which are 59 capable of this feature without using the page cache. 60 61 If you do not use a block device that is capable of using this, 62 or if unsure, say N. 63 64config FS_XIP 65# execute in place 66 bool 67 depends on EXT2_FS_XIP 68 default y 69 70config EXT3_FS 71 tristate "Ext3 journalling file system support" 72 help 73 This is the journaling version of the Second extended file system 74 (often called ext3), the de facto standard Linux file system 75 (method to organize files on a storage device) for hard disks. 76 77 The journaling code included in this driver means you do not have 78 to run e2fsck (file system checker) on your file systems after a 79 crash. The journal keeps track of any changes that were being made 80 at the time the system crashed, and can ensure that your file system 81 is consistent without the need for a lengthy check. 82 83 Other than adding the journal to the file system, the on-disk format 84 of ext3 is identical to ext2. It is possible to freely switch 85 between using the ext3 driver and the ext2 driver, as long as the 86 file system has been cleanly unmounted, or e2fsck is run on the file 87 system. 88 89 To add a journal on an existing ext2 file system or change the 90 behavior of ext3 file systems, you can use the tune2fs utility ("man 91 tune2fs"). To modify attributes of files and directories on ext3 92 file systems, use chattr ("man chattr"). You need to be using 93 e2fsprogs version 1.20 or later in order to create ext3 journals 94 (available at <http://sourceforge.net/projects/e2fsprogs/>). 95 96 To compile this file system support as a module, choose M here: the 97 module will be called ext3. Be aware however that the file system 98 of your root partition (the one containing the directory /) cannot 99 be compiled as a module, and so this may be dangerous. 100 101config EXT3_FS_XATTR 102 bool "Ext3 extended attributes" 103 depends on EXT3_FS 104 default y 105 help 106 Extended attributes are name:value pairs associated with inodes by 107 the kernel or by users (see the attr(5) manual page, or visit 108 <http://acl.bestbits.at/> for details). 109 110 If unsure, say N. 111 112 You need this for POSIX ACL support on ext3. 113 114config EXT3_FS_POSIX_ACL 115 bool "Ext3 POSIX Access Control Lists" 116 depends on EXT3_FS_XATTR 117 help 118 Posix Access Control Lists (ACLs) support permissions for users and 119 groups beyond the owner/group/world scheme. 120 121 To learn more about Access Control Lists, visit the Posix ACLs for 122 Linux website <http://acl.bestbits.at/>. 123 124 If you don't know what Access Control Lists are, say N 125 126config EXT3_FS_SECURITY 127 bool "Ext3 Security Labels" 128 depends on EXT3_FS_XATTR 129 help 130 Security labels support alternative access control models 131 implemented by security modules like SELinux. This option 132 enables an extended attribute handler for file security 133 labels in the ext3 filesystem. 134 135 If you are not using a security module that requires using 136 extended attributes for file security labels, say N. 137 138config JBD 139# CONFIG_JBD could be its own option (even modular), but until there are 140# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS 141# dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS 142 tristate 143 default EXT3_FS 144 help 145 This is a generic journaling layer for block devices. It is 146 currently used by the ext3 file system, but it could also be used to 147 add journal support to other file systems or block devices such as 148 RAID or LVM. 149 150 If you are using the ext3 file system, you need to say Y here. If 151 you are not using ext3 then you will probably want to say N. 152 153 To compile this device as a module, choose M here: the module will be 154 called jbd. If you are compiling ext3 into the kernel, you cannot 155 compile this code as a module. 156 157config JBD_DEBUG 158 bool "JBD (ext3) debugging support" 159 depends on JBD 160 help 161 If you are using the ext3 journaled file system (or potentially any 162 other file system/device using JBD), this option allows you to 163 enable debugging output while the system is running, in order to 164 help track down any problems you are having. By default the 165 debugging output will be turned off. 166 167 If you select Y here, then you will be able to turn on debugging 168 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between 169 1 and 5, the higher the number, the more debugging output is 170 generated. To turn debugging off again, do 171 "echo 0 > /proc/sys/fs/jbd-debug". 172 173config FS_MBCACHE 174# Meta block cache for Extended Attributes (ext2/ext3) 175 tristate 176 depends on EXT2_FS_XATTR || EXT3_FS_XATTR 177 default y if EXT2_FS=y || EXT3_FS=y 178 default m if EXT2_FS=m || EXT3_FS=m 179 180config REISERFS_FS 181 tristate "Reiserfs support" 182 help 183 Stores not just filenames but the files themselves in a balanced 184 tree. Uses journaling. 185 186 Balanced trees are more efficient than traditional file system 187 architectural foundations. 188 189 In general, ReiserFS is as fast as ext2, but is very efficient with 190 large directories and small files. Additional patches are needed 191 for NFS and quotas, please see <http://www.namesys.com/> for links. 192 193 It is more easily extended to have features currently found in 194 database and keyword search systems than block allocation based file 195 systems are. The next version will be so extended, and will support 196 plugins consistent with our motto ``It takes more than a license to 197 make source code open.'' 198 199 Read <http://www.namesys.com/> to learn more about reiserfs. 200 201 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 202 203 If you like it, you can pay us to add new features to it that you 204 need, buy a support contract, or pay us to port it to another OS. 205 206config REISERFS_CHECK 207 bool "Enable reiserfs debug mode" 208 depends on REISERFS_FS 209 help 210 If you set this to Y, then ReiserFS will perform every check it can 211 possibly imagine of its internal consistency throughout its 212 operation. It will also go substantially slower. More than once we 213 have forgotten that this was on, and then gone despondent over the 214 latest benchmarks.:-) Use of this option allows our team to go all 215 out in checking for consistency when debugging without fear of its 216 effect on end users. If you are on the verge of sending in a bug 217 report, say Y and you might get a useful error message. Almost 218 everyone should say N. 219 220config REISERFS_PROC_INFO 221 bool "Stats in /proc/fs/reiserfs" 222 depends on REISERFS_FS 223 help 224 Create under /proc/fs/reiserfs a hierarchy of files, displaying 225 various ReiserFS statistics and internal data at the expense of 226 making your kernel or module slightly larger (+8 KB). This also 227 increases the amount of kernel memory required for each mount. 228 Almost everyone but ReiserFS developers and people fine-tuning 229 reiserfs or tracing problems should say N. 230 231config REISERFS_FS_XATTR 232 bool "ReiserFS extended attributes" 233 depends on REISERFS_FS 234 help 235 Extended attributes are name:value pairs associated with inodes by 236 the kernel or by users (see the attr(5) manual page, or visit 237 <http://acl.bestbits.at/> for details). 238 239 If unsure, say N. 240 241config REISERFS_FS_POSIX_ACL 242 bool "ReiserFS POSIX Access Control Lists" 243 depends on REISERFS_FS_XATTR 244 help 245 Posix Access Control Lists (ACLs) support permissions for users and 246 groups beyond the owner/group/world scheme. 247 248 To learn more about Access Control Lists, visit the Posix ACLs for 249 Linux website <http://acl.bestbits.at/>. 250 251 If you don't know what Access Control Lists are, say N 252 253config REISERFS_FS_SECURITY 254 bool "ReiserFS Security Labels" 255 depends on REISERFS_FS_XATTR 256 help 257 Security labels support alternative access control models 258 implemented by security modules like SELinux. This option 259 enables an extended attribute handler for file security 260 labels in the ReiserFS filesystem. 261 262 If you are not using a security module that requires using 263 extended attributes for file security labels, say N. 264 265config JFS_FS 266 tristate "JFS filesystem support" 267 select NLS 268 help 269 This is a port of IBM's Journaled Filesystem . More information is 270 available in the file <file:Documentation/filesystems/jfs.txt>. 271 272 If you do not intend to use the JFS filesystem, say N. 273 274config JFS_POSIX_ACL 275 bool "JFS POSIX Access Control Lists" 276 depends on JFS_FS 277 help 278 Posix Access Control Lists (ACLs) support permissions for users and 279 groups beyond the owner/group/world scheme. 280 281 To learn more about Access Control Lists, visit the Posix ACLs for 282 Linux website <http://acl.bestbits.at/>. 283 284 If you don't know what Access Control Lists are, say N 285 286config JFS_SECURITY 287 bool "JFS Security Labels" 288 depends on JFS_FS 289 help 290 Security labels support alternative access control models 291 implemented by security modules like SELinux. This option 292 enables an extended attribute handler for file security 293 labels in the jfs filesystem. 294 295 If you are not using a security module that requires using 296 extended attributes for file security labels, say N. 297 298config JFS_DEBUG 299 bool "JFS debugging" 300 depends on JFS_FS 301 help 302 If you are experiencing any problems with the JFS filesystem, say 303 Y here. This will result in additional debugging messages to be 304 written to the system log. Under normal circumstances, this 305 results in very little overhead. 306 307config JFS_STATISTICS 308 bool "JFS statistics" 309 depends on JFS_FS 310 help 311 Enabling this option will cause statistics from the JFS file system 312 to be made available to the user in the /proc/fs/jfs/ directory. 313 314config FS_POSIX_ACL 315# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs) 316# 317# NOTE: you can implement Posix ACLs without these helpers (XFS does). 318# Never use this symbol for ifdefs. 319# 320 bool 321 depends on EXT2_FS_POSIX_ACL || EXT3_FS_POSIX_ACL || JFS_POSIX_ACL || REISERFS_FS_POSIX_ACL || NFSD_V4 322 default y 323 324source "fs/xfs/Kconfig" 325 326config MINIX_FS 327 tristate "Minix fs support" 328 help 329 Minix is a simple operating system used in many classes about OS's. 330 The minix file system (method to organize files on a hard disk 331 partition or a floppy disk) was the original file system for Linux, 332 but has been superseded by the second extended file system ext2fs. 333 You don't want to use the minix file system on your hard disk 334 because of certain built-in restrictions, but it is sometimes found 335 on older Linux floppy disks. This option will enlarge your kernel 336 by about 28 KB. If unsure, say N. 337 338 To compile this file system support as a module, choose M here: the 339 module will be called minix. Note that the file system of your root 340 partition (the one containing the directory /) cannot be compiled as 341 a module. 342 343config ROMFS_FS 344 tristate "ROM file system support" 345 ---help--- 346 This is a very small read-only file system mainly intended for 347 initial ram disks of installation disks, but it could be used for 348 other read-only media as well. Read 349 <file:Documentation/filesystems/romfs.txt> for details. 350 351 To compile this file system support as a module, choose M here: the 352 module will be called romfs. Note that the file system of your 353 root partition (the one containing the directory /) cannot be a 354 module. 355 356 If you don't know whether you need it, then you don't need it: 357 answer N. 358 359config QUOTA 360 bool "Quota support" 361 help 362 If you say Y here, you will be able to set per user limits for disk 363 usage (also called disk quotas). Currently, it works for the 364 ext2, ext3, and reiserfs file system. ext3 also supports journalled 365 quotas for which you don't need to run quotacheck(8) after an unclean 366 shutdown. You need additional software in order to use quota support 367 (you can download sources from 368 <http://www.sf.net/projects/linuxquota/>). For further details, read 369 the Quota mini-HOWTO, available from 370 <http://www.tldp.org/docs.html#howto>, or the documentation provided 371 with the quota tools. Probably the quota support is only useful for 372 multi user systems. If unsure, say N. 373 374config QFMT_V1 375 tristate "Old quota format support" 376 depends on QUOTA 377 help 378 This quota format was (is) used by kernels earlier than 2.4.22. If 379 you have quota working and you don't want to convert to new quota 380 format say Y here. 381 382config QFMT_V2 383 tristate "Quota format v2 support" 384 depends on QUOTA 385 help 386 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 387 need this functionality say Y here. Note that you will need recent 388 quota utilities (>= 3.01) for new quota format with this kernel. 389 390config QUOTACTL 391 bool 392 depends on XFS_QUOTA || QUOTA 393 default y 394 395config DNOTIFY 396 bool "Dnotify support" if EMBEDDED 397 default y 398 help 399 Dnotify is a directory-based per-fd file change notification system 400 that uses signals to communicate events to user-space. There exist 401 superior alternatives, but some applications may still rely on 402 dnotify. 403 404 Because of this, if unsure, say Y. 405 406config AUTOFS_FS 407 tristate "Kernel automounter support" 408 help 409 The automounter is a tool to automatically mount remote file systems 410 on demand. This implementation is partially kernel-based to reduce 411 overhead in the already-mounted case; this is unlike the BSD 412 automounter (amd), which is a pure user space daemon. 413 414 To use the automounter you need the user-space tools from the autofs 415 package; you can find the location in <file:Documentation/Changes>. 416 You also want to answer Y to "NFS file system support", below. 417 418 If you want to use the newer version of the automounter with more 419 features, say N here and say Y to "Kernel automounter v4 support", 420 below. 421 422 To compile this support as a module, choose M here: the module will be 423 called autofs. 424 425 If you are not a part of a fairly large, distributed network, you 426 probably do not need an automounter, and can say N here. 427 428config AUTOFS4_FS 429 tristate "Kernel automounter version 4 support (also supports v3)" 430 help 431 The automounter is a tool to automatically mount remote file systems 432 on demand. This implementation is partially kernel-based to reduce 433 overhead in the already-mounted case; this is unlike the BSD 434 automounter (amd), which is a pure user space daemon. 435 436 To use the automounter you need the user-space tools from 437 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 438 want to answer Y to "NFS file system support", below. 439 440 To compile this support as a module, choose M here: the module will be 441 called autofs4. You will need to add "alias autofs autofs4" to your 442 modules configuration file. 443 444 If you are not a part of a fairly large, distributed network or 445 don't have a laptop which needs to dynamically reconfigure to the 446 local network, you probably do not need an automounter, and can say 447 N here. 448 449menu "CD-ROM/DVD Filesystems" 450 451config ISO9660_FS 452 tristate "ISO 9660 CDROM file system support" 453 help 454 This is the standard file system used on CD-ROMs. It was previously 455 known as "High Sierra File System" and is called "hsfs" on other 456 Unix systems. The so-called Rock-Ridge extensions which allow for 457 long Unix filenames and symbolic links are also supported by this 458 driver. If you have a CD-ROM drive and want to do more with it than 459 just listen to audio CDs and watch its LEDs, say Y (and read 460 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 461 available from <http://www.tldp.org/docs.html#howto>), thereby 462 enlarging your kernel by about 27 KB; otherwise say N. 463 464 To compile this file system support as a module, choose M here: the 465 module will be called isofs. 466 467config JOLIET 468 bool "Microsoft Joliet CDROM extensions" 469 depends on ISO9660_FS 470 select NLS 471 help 472 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 473 which allows for long filenames in unicode format (unicode is the 474 new 16 bit character code, successor to ASCII, which encodes the 475 characters of almost all languages of the world; see 476 <http://www.unicode.org/> for more information). Say Y here if you 477 want to be able to read Joliet CD-ROMs under Linux. 478 479config ZISOFS 480 bool "Transparent decompression extension" 481 depends on ISO9660_FS 482 select ZLIB_INFLATE 483 help 484 This is a Linux-specific extension to RockRidge which lets you store 485 data in compressed form on a CD-ROM and have it transparently 486 decompressed when the CD-ROM is accessed. See 487 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 488 necessary to create such a filesystem. Say Y here if you want to be 489 able to read such compressed CD-ROMs. 490 491config ZISOFS_FS 492# for fs/nls/Config.in 493 tristate 494 depends on ZISOFS 495 default ISO9660_FS 496 497config UDF_FS 498 tristate "UDF file system support" 499 help 500 This is the new file system used on some CD-ROMs and DVDs. Say Y if 501 you intend to mount DVD discs or CDRW's written in packet mode, or 502 if written to by other UDF utilities, such as DirectCD. 503 Please read <file:Documentation/filesystems/udf.txt>. 504 505 To compile this file system support as a module, choose M here: the 506 module will be called udf. 507 508 If unsure, say N. 509 510config UDF_NLS 511 bool 512 default y 513 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 514 515endmenu 516 517menu "DOS/FAT/NT Filesystems" 518 519config FAT_FS 520 tristate 521 select NLS 522 help 523 If you want to use one of the FAT-based file systems (the MS-DOS and 524 VFAT (Windows 95) file systems), then you must say Y or M here 525 to include FAT support. You will then be able to mount partitions or 526 diskettes with FAT-based file systems and transparently access the 527 files on them, i.e. MSDOS files will look and behave just like all 528 other Unix files. 529 530 This FAT support is not a file system in itself, it only provides 531 the foundation for the other file systems. You will have to say Y or 532 M to at least one of "MSDOS fs support" or "VFAT fs support" in 533 order to make use of it. 534 535 Another way to read and write MSDOS floppies and hard drive 536 partitions from within Linux (but not transparently) is with the 537 mtools ("man mtools") program suite. You don't need to say Y here in 538 order to do that. 539 540 If you need to move large files on floppies between a DOS and a 541 Linux box, say Y here, mount the floppy under Linux with an MSDOS 542 file system and use GNU tar's M option. GNU tar is a program 543 available for Unix and DOS ("man tar" or "info tar"). 544 545 It is now also becoming possible to read and write compressed FAT 546 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for 547 details. 548 549 The FAT support will enlarge your kernel by about 37 KB. If unsure, 550 say Y. 551 552 To compile this as a module, choose M here: the module will be called 553 fat. Note that if you compile the FAT support as a module, you 554 cannot compile any of the FAT-based file systems into the kernel 555 -- they will have to be modules as well. 556 557config MSDOS_FS 558 tristate "MSDOS fs support" 559 select FAT_FS 560 help 561 This allows you to mount MSDOS partitions of your hard drive (unless 562 they are compressed; to access compressed MSDOS partitions under 563 Linux, you can either use the DOS emulator DOSEMU, described in the 564 DOSEMU-HOWTO, available from 565 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 566 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 567 intend to use dosemu with a non-compressed MSDOS partition, say Y 568 here) and MSDOS floppies. This means that file access becomes 569 transparent, i.e. the MSDOS files look and behave just like all 570 other Unix files. 571 572 If you have Windows 95 or Windows NT installed on your MSDOS 573 partitions, you should use the VFAT file system (say Y to "VFAT fs 574 support" below), or you will not be able to see the long filenames 575 generated by Windows 95 / Windows NT. 576 577 This option will enlarge your kernel by about 7 KB. If unsure, 578 answer Y. This will only work if you said Y to "DOS FAT fs support" 579 as well. To compile this as a module, choose M here: the module will 580 be called msdos. 581 582config VFAT_FS 583 tristate "VFAT (Windows-95) fs support" 584 select FAT_FS 585 help 586 This option provides support for normal Windows file systems with 587 long filenames. That includes non-compressed FAT-based file systems 588 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 589 programs from the mtools package. 590 591 The VFAT support enlarges your kernel by about 10 KB and it only 592 works if you said Y to the "DOS FAT fs support" above. Please read 593 the file <file:Documentation/filesystems/vfat.txt> for details. If 594 unsure, say Y. 595 596 To compile this as a module, choose M here: the module will be called 597 vfat. 598 599config FAT_DEFAULT_CODEPAGE 600 int "Default codepage for FAT" 601 depends on MSDOS_FS || VFAT_FS 602 default 437 603 help 604 This option should be set to the codepage of your FAT filesystems. 605 It can be overridden with the "codepage" mount option. 606 See <file:Documentation/filesystems/vfat.txt> for more information. 607 608config FAT_DEFAULT_IOCHARSET 609 string "Default iocharset for FAT" 610 depends on VFAT_FS 611 default "iso8859-1" 612 help 613 Set this to the default input/output character set you'd 614 like FAT to use. It should probably match the character set 615 that most of your FAT filesystems use, and can be overridden 616 with the "iocharset" mount option for FAT filesystems. 617 Note that "utf8" is not recommended for FAT filesystems. 618 If unsure, you shouldn't set "utf8" here. 619 See <file:Documentation/filesystems/vfat.txt> for more information. 620 621config NTFS_FS 622 tristate "NTFS file system support" 623 select NLS 624 help 625 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 626 627 Saying Y or M here enables read support. There is partial, but 628 safe, write support available. For write support you must also 629 say Y to "NTFS write support" below. 630 631 There are also a number of user-space tools available, called 632 ntfsprogs. These include ntfsundelete and ntfsresize, that work 633 without NTFS support enabled in the kernel. 634 635 This is a rewrite from scratch of Linux NTFS support and replaced 636 the old NTFS code starting with Linux 2.5.11. A backport to 637 the Linux 2.4 kernel series is separately available as a patch 638 from the project web site. 639 640 For more information see <file:Documentation/filesystems/ntfs.txt> 641 and <http://linux-ntfs.sourceforge.net/>. 642 643 To compile this file system support as a module, choose M here: the 644 module will be called ntfs. 645 646 If you are not using Windows NT, 2000, XP or 2003 in addition to 647 Linux on your computer it is safe to say N. 648 649config NTFS_DEBUG 650 bool "NTFS debugging support" 651 depends on NTFS_FS 652 help 653 If you are experiencing any problems with the NTFS file system, say 654 Y here. This will result in additional consistency checks to be 655 performed by the driver as well as additional debugging messages to 656 be written to the system log. Note that debugging messages are 657 disabled by default. To enable them, supply the option debug_msgs=1 658 at the kernel command line when booting the kernel or as an option 659 to insmod when loading the ntfs module. Once the driver is active, 660 you can enable debugging messages by doing (as root): 661 echo 1 > /proc/sys/fs/ntfs-debug 662 Replacing the "1" with "0" would disable debug messages. 663 664 If you leave debugging messages disabled, this results in little 665 overhead, but enabling debug messages results in very significant 666 slowdown of the system. 667 668 When reporting bugs, please try to have available a full dump of 669 debugging messages while the misbehaviour was occurring. 670 671config NTFS_RW 672 bool "NTFS write support" 673 depends on NTFS_FS 674 help 675 This enables the partial, but safe, write support in the NTFS driver. 676 677 The only supported operation is overwriting existing files, without 678 changing the file length. No file or directory creation, deletion or 679 renaming is possible. Note only non-resident files can be written to 680 so you may find that some very small files (<500 bytes or so) cannot 681 be written to. 682 683 While we cannot guarantee that it will not damage any data, we have 684 so far not received a single report where the driver would have 685 damaged someones data so we assume it is perfectly safe to use. 686 687 Note: While write support is safe in this version (a rewrite from 688 scratch of the NTFS support), it should be noted that the old NTFS 689 write support, included in Linux 2.5.10 and before (since 1997), 690 is not safe. 691 692 This is currently useful with TopologiLinux. TopologiLinux is run 693 on top of any DOS/Microsoft Windows system without partitioning your 694 hard disk. Unlike other Linux distributions TopologiLinux does not 695 need its own partition. For more information see 696 <http://topologi-linux.sourceforge.net/> 697 698 It is perfectly safe to say N here. 699 700endmenu 701 702menu "Pseudo filesystems" 703 704config PROC_FS 705 bool "/proc file system support" 706 help 707 This is a virtual file system providing information about the status 708 of the system. "Virtual" means that it doesn't take up any space on 709 your hard disk: the files are created on the fly by the kernel when 710 you try to access them. Also, you cannot read the files with older 711 version of the program less: you need to use more or cat. 712 713 It's totally cool; for example, "cat /proc/interrupts" gives 714 information about what the different IRQs are used for at the moment 715 (there is a small number of Interrupt ReQuest lines in your computer 716 that are used by the attached devices to gain the CPU's attention -- 717 often a source of trouble if two devices are mistakenly configured 718 to use the same IRQ). The program procinfo to display some 719 information about your system gathered from the /proc file system. 720 721 Before you can use the /proc file system, it has to be mounted, 722 meaning it has to be given a location in the directory hierarchy. 723 That location should be /proc. A command such as "mount -t proc proc 724 /proc" or the equivalent line in /etc/fstab does the job. 725 726 The /proc file system is explained in the file 727 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 728 ("man 5 proc"). 729 730 This option will enlarge your kernel by about 67 KB. Several 731 programs depend on this, so everyone should say Y here. 732 733config PROC_KCORE 734 bool "/proc/kcore support" if !ARM 735 depends on PROC_FS && MMU 736 737config PROC_VMCORE 738 bool "/proc/vmcore support (EXPERIMENTAL)" 739 depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP 740 help 741 Exports the dump image of crashed kernel in ELF format. 742 743config SYSFS 744 bool "sysfs file system support" if EMBEDDED 745 default y 746 help 747 The sysfs filesystem is a virtual filesystem that the kernel uses to 748 export internal kernel objects, their attributes, and their 749 relationships to one another. 750 751 Users can use sysfs to ascertain useful information about the running 752 kernel, such as the devices the kernel has discovered on each bus and 753 which driver each is bound to. sysfs can also be used to tune devices 754 and other kernel subsystems. 755 756 Some system agents rely on the information in sysfs to operate. 757 /sbin/hotplug uses device and object attributes in sysfs to assist in 758 delegating policy decisions, like persistantly naming devices. 759 760 sysfs is currently used by the block subsystem to mount the root 761 partition. If sysfs is disabled you must specify the boot device on 762 the kernel boot command line via its major and minor numbers. For 763 example, "root=03:01" for /dev/hda1. 764 765 Designers of embedded systems may wish to say N here to conserve space. 766 767config DEVPTS_FS_XATTR 768 bool "/dev/pts Extended Attributes" 769 depends on UNIX98_PTYS 770 help 771 Extended attributes are name:value pairs associated with inodes by 772 the kernel or by users (see the attr(5) manual page, or visit 773 <http://acl.bestbits.at/> for details). 774 775 If unsure, say N. 776 777config DEVPTS_FS_SECURITY 778 bool "/dev/pts Security Labels" 779 depends on DEVPTS_FS_XATTR 780 help 781 Security labels support alternative access control models 782 implemented by security modules like SELinux. This option 783 enables an extended attribute handler for file security 784 labels in the /dev/pts filesystem. 785 786 If you are not using a security module that requires using 787 extended attributes for file security labels, say N. 788 789config TMPFS 790 bool "Virtual memory file system support (former shm fs)" 791 help 792 Tmpfs is a file system which keeps all files in virtual memory. 793 794 Everything in tmpfs is temporary in the sense that no files will be 795 created on your hard drive. The files live in memory and swap 796 space. If you unmount a tmpfs instance, everything stored therein is 797 lost. 798 799 See <file:Documentation/filesystems/tmpfs.txt> for details. 800 801config TMPFS_XATTR 802 bool "tmpfs Extended Attributes" 803 depends on TMPFS 804 help 805 Extended attributes are name:value pairs associated with inodes by 806 the kernel or by users (see the attr(5) manual page, or visit 807 <http://acl.bestbits.at/> for details). 808 809 If unsure, say N. 810 811config TMPFS_SECURITY 812 bool "tmpfs Security Labels" 813 depends on TMPFS_XATTR 814 help 815 Security labels support alternative access control models 816 implemented by security modules like SELinux. This option 817 enables an extended attribute handler for file security 818 labels in the tmpfs filesystem. 819 If you are not using a security module that requires using 820 extended attributes for file security labels, say N. 821 822config HUGETLBFS 823 bool "HugeTLB file system support" 824 depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN 825 826config HUGETLB_PAGE 827 def_bool HUGETLBFS 828 829config RAMFS 830 bool 831 default y 832 ---help--- 833 Ramfs is a file system which keeps all files in RAM. It allows 834 read and write access. 835 836 It is more of an programming example than a useable file system. If 837 you need a file system which lives in RAM with limit checking use 838 tmpfs. 839 840 To compile this as a module, choose M here: the module will be called 841 ramfs. 842 843endmenu 844 845menu "Miscellaneous filesystems" 846 847config ADFS_FS 848 tristate "ADFS file system support (EXPERIMENTAL)" 849 depends on EXPERIMENTAL 850 help 851 The Acorn Disc Filing System is the standard file system of the 852 RiscOS operating system which runs on Acorn's ARM-based Risc PC 853 systems and the Acorn Archimedes range of machines. If you say Y 854 here, Linux will be able to read from ADFS partitions on hard drives 855 and from ADFS-formatted floppy discs. If you also want to be able to 856 write to those devices, say Y to "ADFS write support" below. 857 858 The ADFS partition should be the first partition (i.e., 859 /dev/[hs]d?1) on each of your drives. Please read the file 860 <file:Documentation/filesystems/adfs.txt> for further details. 861 862 To compile this code as a module, choose M here: the module will be 863 called adfs. 864 865 If unsure, say N. 866 867config ADFS_FS_RW 868 bool "ADFS write support (DANGEROUS)" 869 depends on ADFS_FS 870 help 871 If you say Y here, you will be able to write to ADFS partitions on 872 hard drives and ADFS-formatted floppy disks. This is experimental 873 codes, so if you're unsure, say N. 874 875config AFFS_FS 876 tristate "Amiga FFS file system support (EXPERIMENTAL)" 877 depends on EXPERIMENTAL 878 help 879 The Fast File System (FFS) is the common file system used on hard 880 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 881 if you want to be able to read and write files from and to an Amiga 882 FFS partition on your hard drive. Amiga floppies however cannot be 883 read with this driver due to an incompatibility of the floppy 884 controller used in an Amiga and the standard floppy controller in 885 PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 886 and <file:fs/affs/Changes>. 887 888 With this driver you can also mount disk files used by Bernd 889 Schmidt's Un*X Amiga Emulator 890 (<http://www.freiburg.linux.de/~uae/>). 891 If you want to do this, you will also need to say Y or M to "Loop 892 device support", above. 893 894 To compile this file system support as a module, choose M here: the 895 module will be called affs. If unsure, say N. 896 897config HFS_FS 898 tristate "Apple Macintosh file system support (EXPERIMENTAL)" 899 depends on EXPERIMENTAL 900 help 901 If you say Y here, you will be able to mount Macintosh-formatted 902 floppy disks and hard drive partitions with full read-write access. 903 Please read <file:fs/hfs/HFS.txt> to learn about the available mount 904 options. 905 906 To compile this file system support as a module, choose M here: the 907 module will be called hfs. 908 909config HFSPLUS_FS 910 tristate "Apple Extended HFS file system support" 911 select NLS 912 select NLS_UTF8 913 help 914 If you say Y here, you will be able to mount extended format 915 Macintosh-formatted hard drive partitions with full read-write access. 916 917 This file system is often called HFS+ and was introduced with 918 MacOS 8. It includes all Mac specific filesystem data such as 919 data forks and creator codes, but it also has several UNIX 920 style features such as file ownership and permissions. 921 922config BEFS_FS 923 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 924 depends on EXPERIMENTAL 925 select NLS 926 help 927 The BeOS File System (BeFS) is the native file system of Be, Inc's 928 BeOS. Notable features include support for arbitrary attributes 929 on files and directories, and database-like indeces on selected 930 attributes. (Also note that this driver doesn't make those features 931 available at this time). It is a 64 bit filesystem, so it supports 932 extremly large volumes and files. 933 934 If you use this filesystem, you should also say Y to at least one 935 of the NLS (native language support) options below. 936 937 If you don't know what this is about, say N. 938 939 To compile this as a module, choose M here: the module will be 940 called befs. 941 942config BEFS_DEBUG 943 bool "Debug BeFS" 944 depends on BEFS_FS 945 help 946 If you say Y here, you can use the 'debug' mount option to enable 947 debugging output from the driver. 948 949config BFS_FS 950 tristate "BFS file system support (EXPERIMENTAL)" 951 depends on EXPERIMENTAL 952 help 953 Boot File System (BFS) is a file system used under SCO UnixWare to 954 allow the bootloader access to the kernel image and other important 955 files during the boot process. It is usually mounted under /stand 956 and corresponds to the slice marked as "STAND" in the UnixWare 957 partition. You should say Y if you want to read or write the files 958 on your /stand slice from within Linux. You then also need to say Y 959 to "UnixWare slices support", below. More information about the BFS 960 file system is contained in the file 961 <file:Documentation/filesystems/bfs.txt>. 962 963 If you don't know what this is about, say N. 964 965 To compile this as a module, choose M here: the module will be called 966 bfs. Note that the file system of your root partition (the one 967 containing the directory /) cannot be compiled as a module. 968 969 970 971config EFS_FS 972 tristate "EFS file system support (read only) (EXPERIMENTAL)" 973 depends on EXPERIMENTAL 974 help 975 EFS is an older file system used for non-ISO9660 CD-ROMs and hard 976 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 977 uses the XFS file system for hard disk partitions however). 978 979 This implementation only offers read-only access. If you don't know 980 what all this is about, it's safe to say N. For more information 981 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 982 983 To compile the EFS file system support as a module, choose M here: the 984 module will be called efs. 985 986config JFFS_FS 987 tristate "Journalling Flash File System (JFFS) support" 988 depends on MTD 989 help 990 JFFS is the Journaling Flash File System developed by Axis 991 Communications in Sweden, aimed at providing a crash/powerdown-safe 992 file system for disk-less embedded devices. Further information is 993 available at (<http://developer.axis.com/software/jffs/>). 994 995config JFFS_FS_VERBOSE 996 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)" 997 depends on JFFS_FS 998 default "0" 999 help 1000 Determines the verbosity level of the JFFS debugging messages. 1001 1002config JFFS_PROC_FS 1003 bool "JFFS stats available in /proc filesystem" 1004 depends on JFFS_FS && PROC_FS 1005 help 1006 Enabling this option will cause statistics from mounted JFFS file systems 1007 to be made available to the user in the /proc/fs/jffs/ directory. 1008 1009config JFFS2_FS 1010 tristate "Journalling Flash File System v2 (JFFS2) support" 1011 select CRC32 1012 depends on MTD 1013 help 1014 JFFS2 is the second generation of the Journalling Flash File System 1015 for use on diskless embedded devices. It provides improved wear 1016 levelling, compression and support for hard links. You cannot use 1017 this on normal block devices, only on 'MTD' devices. 1018 1019 Further information on the design and implementation of JFFS2 is 1020 available at <http://sources.redhat.com/jffs2/>. 1021 1022config JFFS2_FS_DEBUG 1023 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 1024 depends on JFFS2_FS 1025 default "0" 1026 help 1027 This controls the amount of debugging messages produced by the JFFS2 1028 code. Set it to zero for use in production systems. For evaluation, 1029 testing and debugging, it's advisable to set it to one. This will 1030 enable a few assertions and will print debugging messages at the 1031 KERN_DEBUG loglevel, where they won't normally be visible. Level 2 1032 is unlikely to be useful - it enables extra debugging in certain 1033 areas which at one point needed debugging, but when the bugs were 1034 located and fixed, the detailed messages were relegated to level 2. 1035 1036 If reporting bugs, please try to have available a full dump of the 1037 messages at debug level 1 while the misbehaviour was occurring. 1038 1039config JFFS2_FS_NAND 1040 bool "JFFS2 support for NAND flash" 1041 depends on JFFS2_FS 1042 default n 1043 help 1044 This enables the support for NAND flash in JFFS2. NAND is a newer 1045 type of flash chip design than the traditional NOR flash, with 1046 higher density but a handful of characteristics which make it more 1047 interesting for the file system to use. 1048 1049 Say 'N' unless you have NAND flash. 1050 1051config JFFS2_FS_NOR_ECC 1052 bool "JFFS2 support for ECC'd NOR flash (EXPERIMENTAL)" 1053 depends on JFFS2_FS && EXPERIMENTAL 1054 default n 1055 help 1056 This enables the experimental support for NOR flash with transparent 1057 ECC for JFFS2. This type of flash chip is not common, however it is 1058 available from ST Microelectronics. 1059 1060config JFFS2_COMPRESSION_OPTIONS 1061 bool "Advanced compression options for JFFS2" 1062 depends on JFFS2_FS 1063 default n 1064 help 1065 Enabling this option allows you to explicitly choose which 1066 compression modules, if any, are enabled in JFFS2. Removing 1067 compressors and mean you cannot read existing file systems, 1068 and enabling experimental compressors can mean that you 1069 write a file system which cannot be read by a standard kernel. 1070 1071 If unsure, you should _definitely_ say 'N'. 1072 1073config JFFS2_ZLIB 1074 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 1075 select ZLIB_INFLATE 1076 select ZLIB_DEFLATE 1077 depends on JFFS2_FS 1078 default y 1079 help 1080 Zlib is designed to be a free, general-purpose, legally unencumbered, 1081 lossless data-compression library for use on virtually any computer 1082 hardware and operating system. See <http://www.gzip.org/zlib/> for 1083 further information. 1084 1085 Say 'Y' if unsure. 1086 1087config JFFS2_RTIME 1088 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 1089 depends on JFFS2_FS 1090 default y 1091 help 1092 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 1093 1094config JFFS2_RUBIN 1095 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 1096 depends on JFFS2_FS 1097 default n 1098 help 1099 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 1100 1101choice 1102 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 1103 default JFFS2_CMODE_PRIORITY 1104 depends on JFFS2_FS 1105 help 1106 You can set here the default compression mode of JFFS2 from 1107 the available compression modes. Don't touch if unsure. 1108 1109config JFFS2_CMODE_NONE 1110 bool "no compression" 1111 help 1112 Uses no compression. 1113 1114config JFFS2_CMODE_PRIORITY 1115 bool "priority" 1116 help 1117 Tries the compressors in a predefinied order and chooses the first 1118 successful one. 1119 1120config JFFS2_CMODE_SIZE 1121 bool "size (EXPERIMENTAL)" 1122 help 1123 Tries all compressors and chooses the one which has the smallest 1124 result. 1125 1126endchoice 1127 1128config CRAMFS 1129 tristate "Compressed ROM file system support (cramfs)" 1130 select ZLIB_INFLATE 1131 help 1132 Saying Y here includes support for CramFs (Compressed ROM File 1133 System). CramFs is designed to be a simple, small, and compressed 1134 file system for ROM based embedded systems. CramFs is read-only, 1135 limited to 256MB file systems (with 16MB files), and doesn't support 1136 16/32 bits uid/gid, hard links and timestamps. 1137 1138 See <file:Documentation/filesystems/cramfs.txt> and 1139 <file:fs/cramfs/README> for further information. 1140 1141 To compile this as a module, choose M here: the module will be called 1142 cramfs. Note that the root file system (the one containing the 1143 directory /) cannot be compiled as a module. 1144 1145 If unsure, say N. 1146 1147config VXFS_FS 1148 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 1149 help 1150 FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 1151 file system format. VERITAS VxFS(TM) is the standard file system 1152 of SCO UnixWare (and possibly others) and optionally available 1153 for Sunsoft Solaris, HP-UX and many other operating systems. 1154 Currently only readonly access is supported. 1155 1156 NOTE: the file system type as used by mount(1), mount(2) and 1157 fstab(5) is 'vxfs' as it describes the file system format, not 1158 the actual driver. 1159 1160 To compile this as a module, choose M here: the module will be 1161 called freevxfs. If unsure, say N. 1162 1163 1164config HPFS_FS 1165 tristate "OS/2 HPFS file system support" 1166 help 1167 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1168 is the file system used for organizing files on OS/2 hard disk 1169 partitions. Say Y if you want to be able to read files from and 1170 write files to an OS/2 HPFS partition on your hard drive. OS/2 1171 floppies however are in regular MSDOS format, so you don't need this 1172 option in order to be able to read them. Read 1173 <file:Documentation/filesystems/hpfs.txt>. 1174 1175 To compile this file system support as a module, choose M here: the 1176 module will be called hpfs. If unsure, say N. 1177 1178 1179 1180config QNX4FS_FS 1181 tristate "QNX4 file system support (read only)" 1182 help 1183 This is the file system used by the real-time operating systems 1184 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1185 Further information is available at <http://www.qnx.com/>. 1186 Say Y if you intend to mount QNX hard disks or floppies. 1187 Unless you say Y to "QNX4FS read-write support" below, you will 1188 only be able to read these file systems. 1189 1190 To compile this file system support as a module, choose M here: the 1191 module will be called qnx4. 1192 1193 If you don't know whether you need it, then you don't need it: 1194 answer N. 1195 1196config QNX4FS_RW 1197 bool "QNX4FS write support (DANGEROUS)" 1198 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 1199 help 1200 Say Y if you want to test write support for QNX4 file systems. 1201 1202 It's currently broken, so for now: 1203 answer N. 1204 1205 1206 1207config SYSV_FS 1208 tristate "System V/Xenix/V7/Coherent file system support" 1209 help 1210 SCO, Xenix and Coherent are commercial Unix systems for Intel 1211 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1212 here would allow you to read from their floppies and hard disk 1213 partitions. 1214 1215 If you have floppies or hard disk partitions like that, it is likely 1216 that they contain binaries from those other Unix systems; in order 1217 to run these binaries, you will want to install linux-abi which is a 1218 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1219 UnixWare, Dell Unix and System V programs under Linux. It is 1220 available via FTP (user: ftp) from 1221 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1222 NOTE: that will work only for binaries from Intel-based systems; 1223 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1224 1225 If you only intend to mount files from some other Unix over the 1226 network using NFS, you don't need the System V file system support 1227 (but you need NFS file system support obviously). 1228 1229 Note that this option is generally not needed for floppies, since a 1230 good portable way to transport files and directories between unixes 1231 (and even other operating systems) is given by the tar program ("man 1232 tar" or preferably "info tar"). Note also that this option has 1233 nothing whatsoever to do with the option "System V IPC". Read about 1234 the System V file system in 1235 <file:Documentation/filesystems/sysv-fs.txt>. 1236 Saying Y here will enlarge your kernel by about 27 KB. 1237 1238 To compile this as a module, choose M here: the module will be called 1239 sysv. 1240 1241 If you haven't heard about all of this before, it's safe to say N. 1242 1243 1244 1245config UFS_FS 1246 tristate "UFS file system support (read only)" 1247 help 1248 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1249 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1250 Unixes can create and mount hard disk partitions and diskettes using 1251 this file system as well. Saying Y here will allow you to read from 1252 these partitions; if you also want to write to them, say Y to the 1253 experimental "UFS file system write support", below. Please read the 1254 file <file:Documentation/filesystems/ufs.txt> for more information. 1255 1256 The recently released UFS2 variant (used in FreeBSD 5.x) is 1257 READ-ONLY supported. 1258 1259 If you only intend to mount files from some other Unix over the 1260 network using NFS, you don't need the UFS file system support (but 1261 you need NFS file system support obviously). 1262 1263 Note that this option is generally not needed for floppies, since a 1264 good portable way to transport files and directories between unixes 1265 (and even other operating systems) is given by the tar program ("man 1266 tar" or preferably "info tar"). 1267 1268 When accessing NeXTstep files, you may need to convert them from the 1269 NeXT character set to the Latin1 character set; use the program 1270 recode ("info recode") for this purpose. 1271 1272 To compile the UFS file system support as a module, choose M here: the 1273 module will be called ufs. 1274 1275 If you haven't heard about all of this before, it's safe to say N. 1276 1277config UFS_FS_WRITE 1278 bool "UFS file system write support (DANGEROUS)" 1279 depends on UFS_FS && EXPERIMENTAL 1280 help 1281 Say Y here if you want to try writing to UFS partitions. This is 1282 experimental, so you should back up your UFS partitions beforehand. 1283 1284endmenu 1285 1286menu "Network File Systems" 1287 depends on NET 1288 1289config NFS_FS 1290 tristate "NFS file system support" 1291 depends on INET 1292 select LOCKD 1293 select SUNRPC 1294 select NFS_ACL_SUPPORT if NFS_V3_ACL 1295 help 1296 If you are connected to some other (usually local) Unix computer 1297 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 1298 on that computer (the NFS server) using the Network File Sharing 1299 protocol, say Y. "Mounting files" means that the client can access 1300 the files with usual UNIX commands as if they were sitting on the 1301 client's hard disk. For this to work, the server must run the 1302 programs nfsd and mountd (but does not need to have NFS file system 1303 support enabled in its kernel). NFS is explained in the Network 1304 Administrator's Guide, available from 1305 <http://www.tldp.org/docs.html#guide>, on its man page: "man 1306 nfs", and in the NFS-HOWTO. 1307 1308 A superior but less widely used alternative to NFS is provided by 1309 the Coda file system; see "Coda file system support" below. 1310 1311 If you say Y here, you should have said Y to TCP/IP networking also. 1312 This option would enlarge your kernel by about 27 KB. 1313 1314 To compile this file system support as a module, choose M here: the 1315 module will be called nfs. 1316 1317 If you are configuring a diskless machine which will mount its root 1318 file system over NFS at boot time, say Y here and to "Kernel 1319 level IP autoconfiguration" above and to "Root file system on NFS" 1320 below. You cannot compile this driver as a module in this case. 1321 There are two packages designed for booting diskless machines over 1322 the net: netboot, available from 1323 <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 1324 available from <http://ftp1.sourceforge.net/etherboot/>. 1325 1326 If you don't know what all this is about, say N. 1327 1328config NFS_V3 1329 bool "Provide NFSv3 client support" 1330 depends on NFS_FS 1331 help 1332 Say Y here if you want your NFS client to be able to speak version 1333 3 of the NFS protocol. 1334 1335 If unsure, say Y. 1336 1337config NFS_V3_ACL 1338 bool "Provide client support for the NFSv3 ACL protocol extension" 1339 depends on NFS_V3 1340 help 1341 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1342 Access Control Lists. The server should also be compiled with 1343 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1344 1345 If unsure, say N. 1346 1347config NFS_V4 1348 bool "Provide NFSv4 client support (EXPERIMENTAL)" 1349 depends on NFS_FS && EXPERIMENTAL 1350 select RPCSEC_GSS_KRB5 1351 help 1352 Say Y here if you want your NFS client to be able to speak the newer 1353 version 4 of the NFS protocol. 1354 1355 Note: Requires auxiliary userspace daemons which may be found on 1356 http://www.citi.umich.edu/projects/nfsv4/ 1357 1358 If unsure, say N. 1359 1360config NFS_DIRECTIO 1361 bool "Allow direct I/O on NFS files (EXPERIMENTAL)" 1362 depends on NFS_FS && EXPERIMENTAL 1363 help 1364 This option enables applications to perform uncached I/O on files 1365 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 1366 is set for a file, its data is not cached in the system's page 1367 cache. Data is moved to and from user-level application buffers 1368 directly. Unlike local disk-based file systems, NFS O_DIRECT has 1369 no alignment restrictions. 1370 1371 Unless your program is designed to use O_DIRECT properly, you are 1372 much better off allowing the NFS client to manage data caching for 1373 you. Misusing O_DIRECT can cause poor server performance or network 1374 storms. This kernel build option defaults OFF to avoid exposing 1375 system administrators unwittingly to a potentially hazardous 1376 feature. 1377 1378 For more details on NFS O_DIRECT, see fs/nfs/direct.c. 1379 1380 If unsure, say N. This reduces the size of the NFS client, and 1381 causes open() to return EINVAL if a file residing in NFS is 1382 opened with the O_DIRECT flag. 1383 1384config NFSD 1385 tristate "NFS server support" 1386 depends on INET 1387 select LOCKD 1388 select SUNRPC 1389 select EXPORTFS 1390 select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL 1391 help 1392 If you want your Linux box to act as an NFS *server*, so that other 1393 computers on your local network which support NFS can access certain 1394 directories on your box transparently, you have two options: you can 1395 use the self-contained user space program nfsd, in which case you 1396 should say N here, or you can say Y and use the kernel based NFS 1397 server. The advantage of the kernel based solution is that it is 1398 faster. 1399 1400 In either case, you will need support software; the respective 1401 locations are given in the file <file:Documentation/Changes> in the 1402 NFS section. 1403 1404 If you say Y here, you will get support for version 2 of the NFS 1405 protocol (NFSv2). If you also want NFSv3, say Y to the next question 1406 as well. 1407 1408 Please read the NFS-HOWTO, available from 1409 <http://www.tldp.org/docs.html#howto>. 1410 1411 To compile the NFS server support as a module, choose M here: the 1412 module will be called nfsd. If unsure, say N. 1413 1414config NFSD_V2_ACL 1415 bool 1416 depends on NFSD 1417 1418config NFSD_V3 1419 bool "Provide NFSv3 server support" 1420 depends on NFSD 1421 help 1422 If you would like to include the NFSv3 server as well as the NFSv2 1423 server, say Y here. If unsure, say Y. 1424 1425config NFSD_V3_ACL 1426 bool "Provide server support for the NFSv3 ACL protocol extension" 1427 depends on NFSD_V3 1428 select NFSD_V2_ACL 1429 help 1430 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1431 Access Control Lists on exported file systems. NFS clients should 1432 be compiled with the NFSv3 ACL protocol extension; see the 1433 CONFIG_NFS_V3_ACL option. If unsure, say N. 1434 1435config NFSD_V4 1436 bool "Provide NFSv4 server support (EXPERIMENTAL)" 1437 depends on NFSD_V3 && EXPERIMENTAL 1438 select NFSD_TCP 1439 select CRYPTO_MD5 1440 select CRYPTO 1441 help 1442 If you would like to include the NFSv4 server as well as the NFSv2 1443 and NFSv3 servers, say Y here. This feature is experimental, and 1444 should only be used if you are interested in helping to test NFSv4. 1445 If unsure, say N. 1446 1447config NFSD_TCP 1448 bool "Provide NFS server over TCP support" 1449 depends on NFSD 1450 default y 1451 help 1452 If you want your NFS server to support TCP connections, say Y here. 1453 TCP connections usually perform better than the default UDP when 1454 the network is lossy or congested. If unsure, say Y. 1455 1456config ROOT_NFS 1457 bool "Root file system on NFS" 1458 depends on NFS_FS=y && IP_PNP 1459 help 1460 If you want your Linux box to mount its whole root file system (the 1461 one containing the directory /) from some other computer over the 1462 net via NFS (presumably because your box doesn't have a hard disk), 1463 say Y. Read <file:Documentation/nfsroot.txt> for details. It is 1464 likely that in this case, you also want to say Y to "Kernel level IP 1465 autoconfiguration" so that your box can discover its network address 1466 at boot time. 1467 1468 Most people say N here. 1469 1470config LOCKD 1471 tristate 1472 1473config LOCKD_V4 1474 bool 1475 depends on NFSD_V3 || NFS_V3 1476 default y 1477 1478config EXPORTFS 1479 tristate 1480 1481config NFS_ACL_SUPPORT 1482 tristate 1483 select FS_POSIX_ACL 1484 1485config NFS_COMMON 1486 bool 1487 depends on NFSD || NFS_FS 1488 default y 1489 1490config SUNRPC 1491 tristate 1492 1493config SUNRPC_GSS 1494 tristate 1495 1496config RPCSEC_GSS_KRB5 1497 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1498 depends on SUNRPC && EXPERIMENTAL 1499 select SUNRPC_GSS 1500 select CRYPTO 1501 select CRYPTO_MD5 1502 select CRYPTO_DES 1503 help 1504 Provides for secure RPC calls by means of a gss-api 1505 mechanism based on Kerberos V5. This is required for 1506 NFSv4. 1507 1508 Note: Requires an auxiliary userspace daemon which may be found on 1509 http://www.citi.umich.edu/projects/nfsv4/ 1510 1511 If unsure, say N. 1512 1513config RPCSEC_GSS_SPKM3 1514 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 1515 depends on SUNRPC && EXPERIMENTAL 1516 select SUNRPC_GSS 1517 select CRYPTO 1518 select CRYPTO_MD5 1519 select CRYPTO_DES 1520 help 1521 Provides for secure RPC calls by means of a gss-api 1522 mechanism based on the SPKM3 public-key mechanism. 1523 1524 Note: Requires an auxiliary userspace daemon which may be found on 1525 http://www.citi.umich.edu/projects/nfsv4/ 1526 1527 If unsure, say N. 1528 1529config SMB_FS 1530 tristate "SMB file system support (to mount Windows shares etc.)" 1531 depends on INET 1532 select NLS 1533 help 1534 SMB (Server Message Block) is the protocol Windows for Workgroups 1535 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1536 files and printers over local networks. Saying Y here allows you to 1537 mount their file systems (often called "shares" in this context) and 1538 access them just like any other Unix directory. Currently, this 1539 works only if the Windows machines use TCP/IP as the underlying 1540 transport protocol, and not NetBEUI. For details, read 1541 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1542 available from <http://www.tldp.org/docs.html#howto>. 1543 1544 Note: if you just want your box to act as an SMB *server* and make 1545 files and printing services available to Windows clients (which need 1546 to have a TCP/IP stack), you don't need to say Y here; you can use 1547 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1548 for that. 1549 1550 General information about how to connect Linux, Windows machines and 1551 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1552 1553 To compile the SMB support as a module, choose M here: the module will 1554 be called smbfs. Most people say N, however. 1555 1556config SMB_NLS_DEFAULT 1557 bool "Use a default NLS" 1558 depends on SMB_FS 1559 help 1560 Enabling this will make smbfs use nls translations by default. You 1561 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1562 settings and you need to give the default nls for the SMB server as 1563 CONFIG_SMB_NLS_REMOTE. 1564 1565 The nls settings can be changed at mount time, if your smbmount 1566 supports that, using the codepage and iocharset parameters. 1567 1568 smbmount from samba 2.2.0 or later supports this. 1569 1570config SMB_NLS_REMOTE 1571 string "Default Remote NLS Option" 1572 depends on SMB_NLS_DEFAULT 1573 default "cp437" 1574 help 1575 This setting allows you to specify a default value for which 1576 codepage the server uses. If this field is left blank no 1577 translations will be done by default. The local codepage/charset 1578 default to CONFIG_NLS_DEFAULT. 1579 1580 The nls settings can be changed at mount time, if your smbmount 1581 supports that, using the codepage and iocharset parameters. 1582 1583 smbmount from samba 2.2.0 or later supports this. 1584 1585config CIFS 1586 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 1587 depends on INET 1588 select NLS 1589 help 1590 This is the client VFS module for the Common Internet File System 1591 (CIFS) protocol which is the successor to the Server Message Block 1592 (SMB) protocol, the native file sharing mechanism for most early 1593 PC operating systems. The CIFS protocol is fully supported by 1594 file servers such as Windows 2000 (including Windows 2003, NT 4 1595 and Windows XP) as well by Samba (which provides excellent CIFS 1596 server support for Linux and many other operating systems). Currently 1597 you must use the smbfs client filesystem to access older SMB servers 1598 such as Windows 9x and OS/2. 1599 1600 The intent of the cifs module is to provide an advanced 1601 network file system client for mounting to CIFS compliant servers, 1602 including support for dfs (hierarchical name space), secure per-user 1603 session establishment, safe distributed caching (oplock), optional 1604 packet signing, Unicode and other internationalization improvements, 1605 and optional Winbind (nsswitch) integration. You do not need to enable 1606 cifs if running only a (Samba) server. It is possible to enable both 1607 smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003 1608 and Samba 3 servers, and smbfs for accessing old servers). If you need 1609 to mount to Samba or Windows 2003 servers from this machine, say Y. 1610 1611config CIFS_STATS 1612 bool "CIFS statistics" 1613 depends on CIFS 1614 help 1615 Enabling this option will cause statistics for each server share 1616 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 1617 1618config CIFS_XATTR 1619 bool "CIFS extended attributes (EXPERIMENTAL)" 1620 depends on CIFS 1621 help 1622 Extended attributes are name:value pairs associated with inodes by 1623 the kernel or by users (see the attr(5) manual page, or visit 1624 <http://acl.bestbits.at/> for details). CIFS maps the name of 1625 extended attributes beginning with the user namespace prefix 1626 to SMB/CIFS EAs. EAs are stored on Windows servers without the 1627 user namespace prefix, but their names are seen by Linux cifs clients 1628 prefaced by the user namespace prefix. The system namespace 1629 (used by some filesystems to store ACLs) is not supported at 1630 this time. 1631 1632 If unsure, say N. 1633 1634config CIFS_POSIX 1635 bool "CIFS POSIX Extensions (EXPERIMENTAL)" 1636 depends on CIFS_XATTR 1637 help 1638 Enabling this option will cause the cifs client to attempt to 1639 negotiate a newer dialect with servers, such as Samba 3.0.5 1640 or later, that optionally can handle more POSIX like (rather 1641 than Windows like) file behavior. It also enables 1642 support for POSIX ACLs (getfacl and setfacl) to servers 1643 (such as Samba 3.10 and later) which can negotiate 1644 CIFS POSIX ACL support. If unsure, say N. 1645 1646config CIFS_EXPERIMENTAL 1647 bool "CIFS Experimental Features (EXPERIMENTAL)" 1648 depends on CIFS 1649 help 1650 Enables cifs features under testing. These features 1651 are highly experimental. If unsure, say N. 1652 1653config NCP_FS 1654 tristate "NCP file system support (to mount NetWare volumes)" 1655 depends on IPX!=n || INET 1656 help 1657 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 1658 used by Novell NetWare clients to talk to file servers. It is to 1659 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 1660 to mount NetWare file server volumes and to access them just like 1661 any other Unix directory. For details, please read the file 1662 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 1663 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 1664 1665 You do not have to say Y here if you want your Linux box to act as a 1666 file *server* for Novell NetWare clients. 1667 1668 General information about how to connect Linux, Windows machines and 1669 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1670 1671 To compile this as a module, choose M here: the module will be called 1672 ncpfs. Say N unless you are connected to a Novell network. 1673 1674source "fs/ncpfs/Kconfig" 1675 1676config CODA_FS 1677 tristate "Coda file system support (advanced network fs)" 1678 depends on INET 1679 help 1680 Coda is an advanced network file system, similar to NFS in that it 1681 enables you to mount file systems of a remote server and access them 1682 with regular Unix commands as if they were sitting on your hard 1683 disk. Coda has several advantages over NFS: support for 1684 disconnected operation (e.g. for laptops), read/write server 1685 replication, security model for authentication and encryption, 1686 persistent client caches and write back caching. 1687 1688 If you say Y here, your Linux box will be able to act as a Coda 1689 *client*. You will need user level code as well, both for the 1690 client and server. Servers are currently user level, i.e. they need 1691 no kernel support. Please read 1692 <file:Documentation/filesystems/coda.txt> and check out the Coda 1693 home page <http://www.coda.cs.cmu.edu/>. 1694 1695 To compile the coda client support as a module, choose M here: the 1696 module will be called coda. 1697 1698config CODA_FS_OLD_API 1699 bool "Use 96-bit Coda file identifiers" 1700 depends on CODA_FS 1701 help 1702 A new kernel-userspace API had to be introduced for Coda v6.0 1703 to support larger 128-bit file identifiers as needed by the 1704 new realms implementation. 1705 1706 However this new API is not backward compatible with older 1707 clients. If you really need to run the old Coda userspace 1708 cache manager then say Y. 1709 1710 For most cases you probably want to say N. 1711 1712config AFS_FS 1713# for fs/nls/Config.in 1714 tristate "Andrew File System support (AFS) (Experimental)" 1715 depends on INET && EXPERIMENTAL 1716 select RXRPC 1717 help 1718 If you say Y here, you will get an experimental Andrew File System 1719 driver. It currently only supports unsecured read-only AFS access. 1720 1721 See <file:Documentation/filesystems/afs.txt> for more intormation. 1722 1723 If unsure, say N. 1724 1725config RXRPC 1726 tristate 1727 1728endmenu 1729 1730menu "Partition Types" 1731 1732source "fs/partitions/Kconfig" 1733 1734endmenu 1735 1736source "fs/nls/Kconfig" 1737 1738endmenu 1739 1740