1# 2# File system configuration 3# 4 5menu "File systems" 6 7config EXT2_FS 8 tristate "Second extended fs support" 9 help 10 This is the de facto standard Linux file system (method to organize 11 files on a storage device) for hard disks. 12 13 You want to say Y here, unless you intend to use Linux exclusively 14 from inside a DOS partition using the UMSDOS file system. The 15 advantage of the latter is that you can get away without 16 repartitioning your hard drive (which often implies backing 17 everything up and restoring afterwards); the disadvantage is that 18 Linux becomes susceptible to DOS viruses and that UMSDOS is somewhat 19 slower than ext2fs. Even if you want to run Linux in this fashion, 20 it might be a good idea to have ext2fs around: it enables you to 21 read more floppy disks and facilitates the transition to a *real* 22 Linux partition later. Another (rare) case which doesn't require 23 ext2fs is a diskless Linux box which mounts all files over the 24 network using NFS (in this case it's sufficient to say Y to "NFS 25 file system support" below). Saying Y here will enlarge your kernel 26 by about 44 KB. 27 28 The Ext2fs-Undeletion mini-HOWTO, available from 29 <http://www.tldp.org/docs.html#howto>, gives information about 30 how to retrieve deleted files on ext2fs file systems. 31 32 To change the behavior of ext2 file systems, you can use the tune2fs 33 utility ("man tune2fs"). To modify attributes of files and 34 directories on ext2 file systems, use chattr ("man chattr"). 35 36 Ext2fs partitions can be read from within DOS using the ext2tool 37 command line tool package (available from 38 <ftp://ibiblio.org/pub/Linux/system/filesystems/ext2/>) and from 39 within Windows NT using the ext2nt command line tool package from 40 <ftp://ibiblio.org/pub/Linux/utils/dos/>. Explore2fs is a 41 graphical explorer for ext2fs partitions which runs on Windows 95 42 and Windows NT and includes experimental write support; it is 43 available from 44 <http://jnewbigin-pc.it.swin.edu.au/Linux/Explore2fs.htm>. 45 46 To compile this file system support as a module, choose M here: the 47 module will be called ext2. Be aware however that the file system 48 of your root partition (the one containing the directory /) cannot 49 be compiled as a module, and so this could be dangerous. Most 50 everyone wants to say Y here. 51 52config EXT2_FS_XATTR 53 bool "Ext2 extended attributes" 54 depends on EXT2_FS 55 help 56 Extended attributes are name:value pairs associated with inodes by 57 the kernel or by users (see the attr(5) manual page, or visit 58 <http://acl.bestbits.at/> for details). 59 60 If unsure, say N. 61 62config EXT2_FS_POSIX_ACL 63 bool "Ext2 POSIX Access Control Lists" 64 depends on EXT2_FS_XATTR 65 help 66 Posix Access Control Lists (ACLs) support permissions for users and 67 groups beyond the owner/group/world scheme. 68 69 To learn more about Access Control Lists, visit the Posix ACLs for 70 Linux website <http://acl.bestbits.at/>. 71 72 If you don't know what Access Control Lists are, say N 73 74config EXT2_FS_SECURITY 75 bool "Ext2 Security Labels" 76 depends on EXT2_FS_XATTR 77 help 78 Security labels support alternative access control models 79 implemented by security modules like SELinux. This option 80 enables an extended attribute handler for file security 81 labels in the ext2 filesystem. 82 83 If you are not using a security module that requires using 84 extended attributes for file security labels, say N. 85 86config EXT3_FS 87 tristate "Ext3 journalling file system support" 88 help 89 This is the journaling version of the Second extended file system 90 (often called ext3), the de facto standard Linux file system 91 (method to organize files on a storage device) for hard disks. 92 93 The journaling code included in this driver means you do not have 94 to run e2fsck (file system checker) on your file systems after a 95 crash. The journal keeps track of any changes that were being made 96 at the time the system crashed, and can ensure that your file system 97 is consistent without the need for a lengthy check. 98 99 Other than adding the journal to the file system, the on-disk format 100 of ext3 is identical to ext2. It is possible to freely switch 101 between using the ext3 driver and the ext2 driver, as long as the 102 file system has been cleanly unmounted, or e2fsck is run on the file 103 system. 104 105 To add a journal on an existing ext2 file system or change the 106 behavior of ext3 file systems, you can use the tune2fs utility ("man 107 tune2fs"). To modify attributes of files and directories on ext3 108 file systems, use chattr ("man chattr"). You need to be using 109 e2fsprogs version 1.20 or later in order to create ext3 journals 110 (available at <http://sourceforge.net/projects/e2fsprogs/>). 111 112 To compile this file system support as a module, choose M here: the 113 module will be called ext3. Be aware however that the file system 114 of your root partition (the one containing the directory /) cannot 115 be compiled as a module, and so this may be dangerous. 116 117config EXT3_FS_XATTR 118 bool "Ext3 extended attributes" 119 depends on EXT3_FS 120 default y 121 help 122 Extended attributes are name:value pairs associated with inodes by 123 the kernel or by users (see the attr(5) manual page, or visit 124 <http://acl.bestbits.at/> for details). 125 126 If unsure, say N. 127 128 You need this for POSIX ACL support on ext3. 129 130config EXT3_FS_POSIX_ACL 131 bool "Ext3 POSIX Access Control Lists" 132 depends on EXT3_FS_XATTR 133 help 134 Posix Access Control Lists (ACLs) support permissions for users and 135 groups beyond the owner/group/world scheme. 136 137 To learn more about Access Control Lists, visit the Posix ACLs for 138 Linux website <http://acl.bestbits.at/>. 139 140 If you don't know what Access Control Lists are, say N 141 142config EXT3_FS_SECURITY 143 bool "Ext3 Security Labels" 144 depends on EXT3_FS_XATTR 145 help 146 Security labels support alternative access control models 147 implemented by security modules like SELinux. This option 148 enables an extended attribute handler for file security 149 labels in the ext3 filesystem. 150 151 If you are not using a security module that requires using 152 extended attributes for file security labels, say N. 153 154config JBD 155# CONFIG_JBD could be its own option (even modular), but until there are 156# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS 157# dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS 158 tristate 159 default EXT3_FS 160 help 161 This is a generic journaling layer for block devices. It is 162 currently used by the ext3 file system, but it could also be used to 163 add journal support to other file systems or block devices such as 164 RAID or LVM. 165 166 If you are using the ext3 file system, you need to say Y here. If 167 you are not using ext3 then you will probably want to say N. 168 169 To compile this device as a module, choose M here: the module will be 170 called jbd. If you are compiling ext3 into the kernel, you cannot 171 compile this code as a module. 172 173config JBD_DEBUG 174 bool "JBD (ext3) debugging support" 175 depends on JBD 176 help 177 If you are using the ext3 journaled file system (or potentially any 178 other file system/device using JBD), this option allows you to 179 enable debugging output while the system is running, in order to 180 help track down any problems you are having. By default the 181 debugging output will be turned off. 182 183 If you select Y here, then you will be able to turn on debugging 184 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between 185 1 and 5, the higher the number, the more debugging output is 186 generated. To turn debugging off again, do 187 "echo 0 > /proc/sys/fs/jbd-debug". 188 189config FS_MBCACHE 190# Meta block cache for Extended Attributes (ext2/ext3) 191 tristate 192 depends on EXT2_FS_XATTR || EXT3_FS_XATTR 193 default y if EXT2_FS=y || EXT3_FS=y 194 default m if EXT2_FS=m || EXT3_FS=m 195 196config REISERFS_FS 197 tristate "Reiserfs support" 198 help 199 Stores not just filenames but the files themselves in a balanced 200 tree. Uses journaling. 201 202 Balanced trees are more efficient than traditional file system 203 architectural foundations. 204 205 In general, ReiserFS is as fast as ext2, but is very efficient with 206 large directories and small files. Additional patches are needed 207 for NFS and quotas, please see <http://www.namesys.com/> for links. 208 209 It is more easily extended to have features currently found in 210 database and keyword search systems than block allocation based file 211 systems are. The next version will be so extended, and will support 212 plugins consistent with our motto ``It takes more than a license to 213 make source code open.'' 214 215 Read <http://www.namesys.com/> to learn more about reiserfs. 216 217 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 218 219 If you like it, you can pay us to add new features to it that you 220 need, buy a support contract, or pay us to port it to another OS. 221 222config REISERFS_CHECK 223 bool "Enable reiserfs debug mode" 224 depends on REISERFS_FS 225 help 226 If you set this to Y, then ReiserFS will perform every check it can 227 possibly imagine of its internal consistency throughout its 228 operation. It will also go substantially slower. More than once we 229 have forgotten that this was on, and then gone despondent over the 230 latest benchmarks.:-) Use of this option allows our team to go all 231 out in checking for consistency when debugging without fear of its 232 effect on end users. If you are on the verge of sending in a bug 233 report, say Y and you might get a useful error message. Almost 234 everyone should say N. 235 236config REISERFS_PROC_INFO 237 bool "Stats in /proc/fs/reiserfs" 238 depends on REISERFS_FS 239 help 240 Create under /proc/fs/reiserfs a hierarchy of files, displaying 241 various ReiserFS statistics and internal data at the expense of 242 making your kernel or module slightly larger (+8 KB). This also 243 increases the amount of kernel memory required for each mount. 244 Almost everyone but ReiserFS developers and people fine-tuning 245 reiserfs or tracing problems should say N. 246 247config JFS_FS 248 tristate "JFS filesystem support" 249 select NLS 250 help 251 This is a port of IBM's Journaled Filesystem . More information is 252 available in the file Documentation/filesystems/jfs.txt. 253 254 If you do not intend to use the JFS filesystem, say N. 255 256config JFS_POSIX_ACL 257 bool "JFS POSIX Access Control Lists" 258 depends on JFS_FS 259 help 260 Posix Access Control Lists (ACLs) support permissions for users and 261 groups beyond the owner/group/world scheme. 262 263 To learn more about Access Control Lists, visit the Posix ACLs for 264 Linux website <http://acl.bestbits.at/>. 265 266 If you don't know what Access Control Lists are, say N 267 268config JFS_DEBUG 269 bool "JFS debugging" 270 depends on JFS_FS 271 help 272 If you are experiencing any problems with the JFS filesystem, say 273 Y here. This will result in additional debugging messages to be 274 written to the system log. Under normal circumstances, this 275 results in very little overhead. 276 277config JFS_STATISTICS 278 bool "JFS statistics" 279 depends on JFS_FS 280 help 281 Enabling this option will cause statistics from the JFS file system 282 to be made available to the user in the /proc/fs/jfs/ directory. 283 284config FS_POSIX_ACL 285# Posix ACL utility routines (for now, only ext2/ext3/jfs) 286# 287# NOTE: you can implement Posix ACLs without these helpers (XFS does). 288# Never use this symbol for ifdefs. 289# 290 bool 291 depends on EXT2_FS_POSIX_ACL || EXT3_FS_POSIX_ACL || JFS_POSIX_ACL 292 default y 293 294config XFS_FS 295 tristate "XFS filesystem support" 296 help 297 XFS is a high performance journaling filesystem which originated 298 on the SGI IRIX platform. It is completely multi-threaded, can 299 support large files and large filesystems, extended attributes, 300 variable block sizes, is extent based, and makes extensive use of 301 Btrees (directories, extents, free space) to aid both performance 302 and scalability. 303 304 Refer to the documentation at <http://oss.sgi.com/projects/xfs/> 305 for complete details. This implementation is on-disk compatible 306 with the IRIX version of XFS. 307 308 To compile this file system support as a module, choose M here: the 309 module will be called xfs. Be aware, however, that if the file 310 system of your root partition is compiled as a module, you'll need 311 to use an initial ramdisk (initrd) to boot. 312 313config XFS_RT 314 bool "Realtime support (EXPERIMENTAL)" 315 depends on XFS_FS && EXPERIMENTAL 316 help 317 If you say Y here you will be able to mount and use XFS filesystems 318 which contain a realtime subvolume. The realtime subvolume is a 319 separate area of disk space where only file data is stored. The 320 realtime subvolume is designed to provide very deterministic 321 data rates suitable for media streaming applications. 322 323 See the xfs man page in section 5 for a bit more information. 324 325 This feature is unsupported at this time, is not yet fully 326 functional, and may cause serious problems. 327 328 If unsure, say N. 329 330config XFS_QUOTA 331 bool "Quota support" 332 depends on XFS_FS 333 help 334 If you say Y here, you will be able to set limits for disk usage on 335 a per user and/or a per group basis under XFS. XFS considers quota 336 information as filesystem metadata and uses journaling to provide a 337 higher level guarantee of consistency. The on-disk data format for 338 quota is also compatible with the IRIX version of XFS, allowing a 339 filesystem to be migrated between Linux and IRIX without any need 340 for conversion. 341 342 If unsure, say N. More comprehensive documentation can be found in 343 README.quota in the xfsprogs package. XFS quota can be used either 344 with or without the generic quota support enabled (CONFIG_QUOTA) - 345 they are completely independent subsystems. 346 347config XFS_POSIX_ACL 348 bool "ACL support" 349 depends on XFS_FS 350 help 351 Posix Access Control Lists (ACLs) support permissions for users and 352 groups beyond the owner/group/world scheme. 353 354 To learn more about Access Control Lists, visit the Posix ACLs for 355 Linux website <http://acl.bestbits.at/>. 356 357 If you don't know what Access Control Lists are, say N 358 359config MINIX_FS 360 tristate "Minix fs support" 361 help 362 Minix is a simple operating system used in many classes about OS's. 363 The minix file system (method to organize files on a hard disk 364 partition or a floppy disk) was the original file system for Linux, 365 but has been superseded by the second extended file system ext2fs. 366 You don't want to use the minix file system on your hard disk 367 because of certain built-in restrictions, but it is sometimes found 368 on older Linux floppy disks. This option will enlarge your kernel 369 by about 28 KB. If unsure, say N. 370 371 To compile this file system support as a module, choose M here: the 372 module will be called minix. Note that the file system of your root 373 partition (the one containing the directory /) cannot be compiled as 374 a module. 375 376config ROMFS_FS 377 tristate "ROM file system support" 378 ---help--- 379 This is a very small read-only file system mainly intended for 380 initial ram disks of installation disks, but it could be used for 381 other read-only media as well. Read 382 <file:Documentation/filesystems/romfs.txt> for details. 383 384 To compile this file system support as a module, choose M here: the 385 module will be called romfs. Note that the file system of your 386 root partition (the one containing the directory /) cannot be a 387 module. 388 389 If you don't know whether you need it, then you don't need it: 390 answer N. 391 392config QUOTA 393 bool "Quota support" 394 help 395 If you say Y here, you will be able to set per user limits for disk 396 usage (also called disk quotas). Currently, it works for the 397 ext2, ext3, and reiserfs file system. You need additional software 398 in order to use quota support (you can download sources from 399 <http://www.sf.net/projects/linuxquota/>). For further details, read 400 the Quota mini-HOWTO, available from 401 <http://www.tldp.org/docs.html#howto>. Probably the quota 402 support is only useful for multi user systems. If unsure, say N. 403 404config QFMT_V1 405 tristate "Old quota format support" 406 depends on QUOTA 407 help 408 This quota format was (is) used by kernels earlier than 2.4.??. If 409 you have quota working and you don't want to convert to new quota 410 format say Y here. 411 412config QFMT_V2 413 tristate "Quota format v2 support" 414 depends on QUOTA 415 help 416 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 417 need this functionality say Y here. Note that you will need latest 418 quota utilities for new quota format with this kernel. 419 420config QUOTACTL 421 bool 422 depends on XFS_QUOTA || QUOTA 423 default y 424 425config AUTOFS_FS 426 tristate "Kernel automounter support" 427 help 428 The automounter is a tool to automatically mount remote file systems 429 on demand. This implementation is partially kernel-based to reduce 430 overhead in the already-mounted case; this is unlike the BSD 431 automounter (amd), which is a pure user space daemon. 432 433 To use the automounter you need the user-space tools from the autofs 434 package; you can find the location in <file:Documentation/Changes>. 435 You also want to answer Y to "NFS file system support", below. 436 437 If you want to use the newer version of the automounter with more 438 features, say N here and say Y to "Kernel automounter v4 support", 439 below. 440 441 To compile this support as a module, choose M here: the module will be 442 called autofs. 443 444 If you are not a part of a fairly large, distributed network, you 445 probably do not need an automounter, and can say N here. 446 447config AUTOFS4_FS 448 tristate "Kernel automounter version 4 support (also supports v3)" 449 help 450 The automounter is a tool to automatically mount remote file systems 451 on demand. This implementation is partially kernel-based to reduce 452 overhead in the already-mounted case; this is unlike the BSD 453 automounter (amd), which is a pure user space daemon. 454 455 To use the automounter you need the user-space tools from 456 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/testing-v4/>; you also 457 want to answer Y to "NFS file system support", below. 458 459 To compile this support as a module, choose M here: the module will be 460 called autofs4. You will need to add "alias autofs autofs4" to your 461 modules configuration file. 462 463 If you are not a part of a fairly large, distributed network or 464 don't have a laptop which needs to dynamically reconfigure to the 465 local network, you probably do not need an automounter, and can say 466 N here. 467 468menu "CD-ROM/DVD Filesystems" 469 470config ISO9660_FS 471 tristate "ISO 9660 CDROM file system support" 472 help 473 This is the standard file system used on CD-ROMs. It was previously 474 known as "High Sierra File System" and is called "hsfs" on other 475 Unix systems. The so-called Rock-Ridge extensions which allow for 476 long Unix filenames and symbolic links are also supported by this 477 driver. If you have a CD-ROM drive and want to do more with it than 478 just listen to audio CDs and watch its LEDs, say Y (and read 479 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 480 available from <http://www.tldp.org/docs.html#howto>), thereby 481 enlarging your kernel by about 27 KB; otherwise say N. 482 483 To compile this file system support as a module, choose M here: the 484 module will be called isofs. 485 486config JOLIET 487 bool "Microsoft Joliet CDROM extensions" 488 depends on ISO9660_FS 489 select NLS 490 help 491 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 492 which allows for long filenames in unicode format (unicode is the 493 new 16 bit character code, successor to ASCII, which encodes the 494 characters of almost all languages of the world; see 495 <http://www.unicode.org/> for more information). Say Y here if you 496 want to be able to read Joliet CD-ROMs under Linux. 497 498config ZISOFS 499 bool "Transparent decompression extension" 500 depends on ISO9660_FS 501 select ZLIB_INFLATE 502 help 503 This is a Linux-specific extension to RockRidge which lets you store 504 data in compressed form on a CD-ROM and have it transparently 505 decompressed when the CD-ROM is accessed. See 506 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 507 necessary to create such a filesystem. Say Y here if you want to be 508 able to read such compressed CD-ROMs. 509 510config ZISOFS_FS 511# for fs/nls/Config.in 512 tristate 513 depends on ZISOFS 514 default ISO9660_FS 515 516config UDF_FS 517 tristate "UDF file system support" 518 help 519 This is the new file system used on some CD-ROMs and DVDs. Say Y if 520 you intend to mount DVD discs or CDRW's written in packet mode, or 521 if written to by other UDF utilities, such as DirectCD. 522 Please read <file:Documentation/filesystems/udf.txt>. 523 524 To compile this file system support as a module, choose M here: the 525 module will be called udf. 526 527 If unsure, say N. 528 529endmenu 530 531menu "DOS/FAT/NT Filesystems" 532 533config FAT_FS 534 tristate "DOS FAT fs support" 535 select NLS 536 help 537 If you want to use one of the FAT-based file systems (the MS-DOS, 538 VFAT (Windows 95) and UMSDOS (used to run Linux on top of an 539 ordinary DOS partition) file systems), then you must say Y or M here 540 to include FAT support. You will then be able to mount partitions or 541 diskettes with FAT-based file systems and transparently access the 542 files on them, i.e. MSDOS files will look and behave just like all 543 other Unix files. 544 545 This FAT support is not a file system in itself, it only provides 546 the foundation for the other file systems. You will have to say Y or 547 M to at least one of "MSDOS fs support" or "VFAT fs support" in 548 order to make use of it. 549 550 Another way to read and write MSDOS floppies and hard drive 551 partitions from within Linux (but not transparently) is with the 552 mtools ("man mtools") program suite. You don't need to say Y here in 553 order to do that. 554 555 If you need to move large files on floppies between a DOS and a 556 Linux box, say Y here, mount the floppy under Linux with an MSDOS 557 file system and use GNU tar's M option. GNU tar is a program 558 available for Unix and DOS ("man tar" or "info tar"). 559 560 It is now also becoming possible to read and write compressed FAT 561 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for 562 details. 563 564 The FAT support will enlarge your kernel by about 37 KB. If unsure, 565 say Y. 566 567 To compile this as a module, choose M here: the module will be called 568 fat. Note that if you compile the FAT support as a module, you 569 cannot compile any of the FAT-based file systems into the kernel 570 -- they will have to be modules as well. 571 The file system of your root partition (the one containing the 572 directory /) cannot be a module, so don't say M here if you intend 573 to use UMSDOS as your root file system. 574 575config MSDOS_FS 576 tristate "MSDOS fs support" 577 depends on FAT_FS 578 help 579 This allows you to mount MSDOS partitions of your hard drive (unless 580 they are compressed; to access compressed MSDOS partitions under 581 Linux, you can either use the DOS emulator DOSEMU, described in the 582 DOSEMU-HOWTO, available from 583 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 584 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 585 intend to use dosemu with a non-compressed MSDOS partition, say Y 586 here) and MSDOS floppies. This means that file access becomes 587 transparent, i.e. the MSDOS files look and behave just like all 588 other Unix files. 589 590 If you want to use UMSDOS, the Unix-like file system on top of a 591 DOS file system, which allows you to run Linux from within a DOS 592 partition without repartitioning, you'll have to say Y or M here. 593 594 If you have Windows 95 or Windows NT installed on your MSDOS 595 partitions, you should use the VFAT file system (say Y to "VFAT fs 596 support" below), or you will not be able to see the long filenames 597 generated by Windows 95 / Windows NT. 598 599 This option will enlarge your kernel by about 7 KB. If unsure, 600 answer Y. This will only work if you said Y to "DOS FAT fs support" 601 as well. To compile this as a module, choose M here: the module will 602 be called msdos. 603 604config VFAT_FS 605 tristate "VFAT (Windows-95) fs support" 606 depends on FAT_FS 607 help 608 This option provides support for normal Windows file systems with 609 long filenames. That includes non-compressed FAT-based file systems 610 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 611 programs from the mtools package. 612 613 You cannot use the VFAT file system for your Linux root partition 614 (the one containing the directory /); use UMSDOS instead if you 615 want to run Linux from within a DOS partition (i.e. say Y to 616 "Unix like fs on top of std MSDOS fs", below). 617 618 The VFAT support enlarges your kernel by about 10 KB and it only 619 works if you said Y to the "DOS FAT fs support" above. Please read 620 the file <file:Documentation/filesystems/vfat.txt> for details. If 621 unsure, say Y. 622 623 To compile this as a module, choose M here: the module will be called 624 vfat. 625 626config UMSDOS_FS 627#dep_tristate ' UMSDOS: Unix-like file system on top of standard MSDOS fs' CONFIG_UMSDOS_FS $CONFIG_MSDOS_FS 628# UMSDOS is temprory broken 629 bool 630 help 631 Say Y here if you want to run Linux from within an existing DOS 632 partition of your hard drive. The advantage of this is that you can 633 get away without repartitioning your hard drive (which often implies 634 backing everything up and restoring afterwards) and hence you're 635 able to quickly try out Linux or show it to your friends; the 636 disadvantage is that Linux becomes susceptible to DOS viruses and 637 that UMSDOS is somewhat slower than ext2fs. Another use of UMSDOS 638 is to write files with long unix filenames to MSDOS floppies; it 639 also allows Unix-style soft-links and owner/permissions of files on 640 MSDOS floppies. You will need a program called umssync in order to 641 make use of UMSDOS; read 642 <file:Documentation/filesystems/umsdos.txt>. 643 644 To get utilities for initializing/checking UMSDOS file system, or 645 latest patches and/or information, visit the UMSDOS home page at 646 <http://www.voyager.hr/~mnalis/umsdos/>. 647 648 This option enlarges your kernel by about 28 KB and it only works if 649 you said Y to both "DOS FAT fs support" and "MSDOS fs support" 650 above. To compile this as a module, choose M here: the module will be 651 called umsdos. Note that the file system of your root partition 652 (the one containing the directory /) cannot be a module, so saying M 653 could be dangerous. If unsure, say N. 654 655config NTFS_FS 656 tristate "NTFS file system support" 657 select NLS 658 help 659 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 660 661 Saying Y or M here enables read support. There is partial, but 662 safe, write support available. For write support you must also 663 say Y to "NTFS write support" below. 664 665 There are also a number of user-space tools available, called 666 ntfsprogs. These include ntfsundelete and ntfsresize, that work 667 without NTFS support enabled in the kernel. 668 669 This is a rewrite from scratch of Linux NTFS support and replaced 670 the old NTFS code starting with Linux 2.5.11. A backport to 671 the Linux 2.4 kernel series is separately available as a patch 672 from the project web site. 673 674 For more information see <file:Documentation/filesystems/ntfs.txt> 675 and <http://linux-ntfs.sourceforge.net/>. 676 677 To compile this file system support as a module, choose M here: the 678 module will be called ntfs. 679 680 If you are not using Windows NT, 2000, XP or 2003 in addition to 681 Linux on your computer it is safe to say N. 682 683config NTFS_DEBUG 684 bool "NTFS debugging support" 685 depends on NTFS_FS 686 help 687 If you are experiencing any problems with the NTFS file system, say 688 Y here. This will result in additional consistency checks to be 689 performed by the driver as well as additional debugging messages to 690 be written to the system log. Note that debugging messages are 691 disabled by default. To enable them, supply the option debug_msgs=1 692 at the kernel command line when booting the kernel or as an option 693 to insmod when loading the ntfs module. Once the driver is active, 694 you can enable debugging messages by doing (as root): 695 echo 1 > /proc/sys/fs/ntfs-debug 696 Replacing the "1" with "0" would disable debug messages. 697 698 If you leave debugging messages disabled, this results in little 699 overhead, but enabling debug messages results in very significant 700 slowdown of the system. 701 702 When reporting bugs, please try to have available a full dump of 703 debugging messages while the misbehaviour was occurring. 704 705config NTFS_RW 706 bool "NTFS write support" 707 depends on NTFS_FS 708 help 709 This enables the partial, but safe, write support in the NTFS driver. 710 711 The only supported operation is overwriting existing files, without 712 changing the file length. No file or directory creation, deletion or 713 renaming is possible. Note only non-resident files can be written to 714 so you may find that some very small files (<500 bytes or so) cannot 715 be written to. 716 717 While we cannot guarantee that it will not damage any data, we have 718 so far not received a single report where the driver would have 719 damaged someones data so we assume it is perfectly safe to use. 720 721 Note: While write support is safe in this version (a rewrite from 722 scratch of the NTFS support), it should be noted that the old NTFS 723 write support, included in Linux 2.5.10 and before (since 1997), 724 is not safe. 725 726 This is currently useful with TopologiLinux. TopologiLinux is run 727 on top of any DOS/Microsoft Windows system without partitioning your 728 hard disk. Unlike other Linux distributions TopologiLinux does not 729 need its own partition. For more information see 730 <http://topologi-linux.sourceforge.net/> 731 732 It is perfectly safe to say N here. 733 734endmenu 735 736menu "Pseudo filesystems" 737 738config PROC_FS 739 bool "/proc file system support" 740 help 741 This is a virtual file system providing information about the status 742 of the system. "Virtual" means that it doesn't take up any space on 743 your hard disk: the files are created on the fly by the kernel when 744 you try to access them. Also, you cannot read the files with older 745 version of the program less: you need to use more or cat. 746 747 It's totally cool; for example, "cat /proc/interrupts" gives 748 information about what the different IRQs are used for at the moment 749 (there is a small number of Interrupt ReQuest lines in your computer 750 that are used by the attached devices to gain the CPU's attention -- 751 often a source of trouble if two devices are mistakenly configured 752 to use the same IRQ). The program procinfo to display some 753 information about your system gathered from the /proc file system. 754 755 Before you can use the /proc file system, it has to be mounted, 756 meaning it has to be given a location in the directory hierarchy. 757 That location should be /proc. A command such as "mount -t proc proc 758 /proc" or the equivalent line in /etc/fstab does the job. 759 760 The /proc file system is explained in the file 761 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 762 ("man 5 proc"). 763 764 This option will enlarge your kernel by about 67 KB. Several 765 programs depend on this, so everyone should say Y here. 766 767config PROC_KCORE 768 bool 769 default y if !ARM 770 771config DEVFS_FS 772 bool "/dev file system support (OBSOLETE)" 773 depends on EXPERIMENTAL 774 help 775 This is support for devfs, a virtual file system (like /proc) which 776 provides the file system interface to device drivers, normally found 777 in /dev. Devfs does not depend on major and minor number 778 allocations. Device drivers register entries in /dev which then 779 appear automatically, which means that the system administrator does 780 not have to create character and block special device files in the 781 /dev directory using the mknod command (or MAKEDEV script) anymore. 782 783 This is work in progress. If you want to use this, you *must* read 784 the material in <file:Documentation/filesystems/devfs/>, especially 785 the file README there. 786 787 Note that devfs no longer manages /dev/pts! If you are using UNIX98 788 ptys, you will also need to enable (and mount) the /dev/pts 789 filesystem (CONFIG_DEVPTS_FS). 790 791 Note that devfs has been obsoleted by udev, 792 <http://www.kernel.org/pub/linux/utils/kernel/hotplug/>. 793 It has been stripped down to a bare minimum and is only provided for 794 legacy installations that use its naming scheme which is 795 unfortunately different from the names normal Linux installations 796 use. 797 798 If unsure, say N. 799 800config DEVFS_MOUNT 801 bool "Automatically mount at boot" 802 depends on DEVFS_FS 803 help 804 This option appears if you have CONFIG_DEVFS_FS enabled. Setting 805 this to 'Y' will make the kernel automatically mount devfs onto /dev 806 when the system is booted, before the init thread is started. 807 You can override this with the "devfs=nomount" boot option. 808 809 If unsure, say N. 810 811config DEVFS_DEBUG 812 bool "Debug devfs" 813 depends on DEVFS_FS 814 help 815 If you say Y here, then the /dev file system code will generate 816 debugging messages. See the file 817 <file:Documentation/filesystems/devfs/boot-options> for more 818 details. 819 820 If unsure, say N. 821 822config DEVPTS_FS 823# It compiles as a module for testing only. It should not be used 824# as a module in general. If we make this "tristate", a bunch of people 825# who don't know what they are doing turn it on and complain when it 826# breaks. 827 bool "/dev/pts file system for Unix98 PTYs" 828 depends on UNIX98_PTYS 829 ---help--- 830 You should say Y here if you said Y to "Unix98 PTY support" above. 831 You'll then get a virtual file system which can be mounted on 832 /dev/pts with "mount -t devpts". This, together with the pseudo 833 terminal master multiplexer /dev/ptmx, is used for pseudo terminal 834 support as described in The Open Group's Unix98 standard: in order 835 to acquire a pseudo terminal, a process opens /dev/ptmx; the number 836 of the pseudo terminal is then made available to the process and the 837 pseudo terminal slave can be accessed as /dev/pts/<number>. What was 838 traditionally /dev/ttyp2 will then be /dev/pts/2, for example. 839 840 The GNU C library glibc 2.1 contains the requisite support for this 841 mode of operation; you also need client programs that use the Unix98 842 API. Please read <file:Documentation/Changes> for more information 843 about the Unix98 pty devices. 844 845config DEVPTS_FS_XATTR 846 bool "/dev/pts Extended Attributes" 847 depends on DEVPTS_FS 848 help 849 Extended attributes are name:value pairs associated with inodes by 850 the kernel or by users (see the attr(5) manual page, or visit 851 <http://acl.bestbits.at/> for details). 852 853 If unsure, say N. 854 855config DEVPTS_FS_SECURITY 856 bool "/dev/pts Security Labels" 857 depends on DEVPTS_FS_XATTR 858 help 859 Security labels support alternative access control models 860 implemented by security modules like SELinux. This option 861 enables an extended attribute handler for file security 862 labels in the /dev/pts filesystem. 863 864 If you are not using a security module that requires using 865 extended attributes for file security labels, say N. 866 867config TMPFS 868 bool "Virtual memory file system support (former shm fs)" 869 help 870 Tmpfs is a file system which keeps all files in virtual memory. 871 872 Everything in tmpfs is temporary in the sense that no files will be 873 created on your hard drive. The files live in memory and swap 874 space. If you unmount a tmpfs instance, everything stored therein is 875 lost. 876 877 See <file:Documentation/filesystems/tmpfs.txt> for details. 878 879config HUGETLBFS 880 bool "HugeTLB file system support" 881 depends X86 || IA64 || PPC64 || SPARC64 || X86_64 || BROKEN 882 883config HUGETLB_PAGE 884 def_bool HUGETLBFS 885 886config RAMFS 887 bool 888 default y 889 ---help--- 890 Ramfs is a file system which keeps all files in RAM. It allows 891 read and write access. 892 893 It is more of an programming example than a useable file system. If 894 you need a file system which lives in RAM with limit checking use 895 tmpfs. 896 897 To compile this as a module, choose M here: the module will be called 898 ramfs. 899 900endmenu 901 902menu "Miscellaneous filesystems" 903 904config ADFS_FS 905 tristate "ADFS file system support (EXPERIMENTAL)" 906 depends on EXPERIMENTAL 907 help 908 The Acorn Disc Filing System is the standard file system of the 909 RiscOS operating system which runs on Acorn's ARM-based Risc PC 910 systems and the Acorn Archimedes range of machines. If you say Y 911 here, Linux will be able to read from ADFS partitions on hard drives 912 and from ADFS-formatted floppy discs. If you also want to be able to 913 write to those devices, say Y to "ADFS write support" below. 914 915 The ADFS partition should be the first partition (i.e., 916 /dev/[hs]d?1) on each of your drives. Please read the file 917 <file:Documentation/filesystems/adfs.txt> for further details. 918 919 To compile this code as a module, choose M here: the module will be 920 called adfs. 921 922 If unsure, say N. 923 924config ADFS_FS_RW 925 bool "ADFS write support (DANGEROUS)" 926 depends on ADFS_FS 927 help 928 If you say Y here, you will be able to write to ADFS partitions on 929 hard drives and ADFS-formatted floppy disks. This is experimental 930 codes, so if you're unsure, say N. 931 932config AFFS_FS 933 tristate "Amiga FFS file system support (EXPERIMENTAL)" 934 depends on EXPERIMENTAL 935 help 936 The Fast File System (FFS) is the common file system used on hard 937 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 938 if you want to be able to read and write files from and to an Amiga 939 FFS partition on your hard drive. Amiga floppies however cannot be 940 read with this driver due to an incompatibility of the floppy 941 controller used in an Amiga and the standard floppy controller in 942 PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 943 and <file:fs/affs/Changes>. 944 945 With this driver you can also mount disk files used by Bernd 946 Schmidt's Un*X Amiga Emulator 947 (<http://www.freiburg.linux.de/~uae/>). 948 If you want to do this, you will also need to say Y or M to "Loop 949 device support", above. 950 951 To compile this file system support as a module, choose M here: the 952 module will be called affs. If unsure, say N. 953 954config HFS_FS 955 tristate "Apple Macintosh file system support (EXPERIMENTAL)" 956 depends on EXPERIMENTAL 957 help 958 If you say Y here, you will be able to mount Macintosh-formatted 959 floppy disks and hard drive partitions with full read-write access. 960 Please read <file:fs/hfs/HFS.txt> to learn about the available mount 961 options. 962 963 To compile this file system support as a module, choose M here: the 964 module will be called hfs. 965 966config BEFS_FS 967 tristate "BeOS file systemv(BeFS) support (read only) (EXPERIMENTAL)" 968 depends on EXPERIMENTAL 969 select NLS 970 help 971 The BeOS File System (BeFS) is the native file system of Be, Inc's 972 BeOS. Notable features include support for arbitrary attributes 973 on files and directories, and database-like indices on selected 974 attributes. (Also note that this driver doesn't make those features 975 available at this time). It is a 64 bit filesystem, so it supports 976 extreemly large volumes and files. 977 978 If you use this filesystem, you should also say Y to at least one 979 of the NLS (native language support) options below. 980 981 If you don't know what this is about, say N. 982 983 To compile this as a module, choose M here: the module will be 984 called befs. 985 986config BEFS_DEBUG 987 bool "Debug BeFS" 988 depends on BEFS_FS 989 help 990 If you say Y here, you can use the 'debug' mount option to enable 991 debugging output from the driver. 992 993config BFS_FS 994 tristate "BFS file system support (EXPERIMENTAL)" 995 depends on EXPERIMENTAL 996 help 997 Boot File System (BFS) is a file system used under SCO UnixWare to 998 allow the bootloader access to the kernel image and other important 999 files during the boot process. It is usually mounted under /stand 1000 and corresponds to the slice marked as "STAND" in the UnixWare
1001 partition. You should say Y if you want to read or write the files 1002 on your /stand slice from within Linux. You then also need to say Y 1003 to "UnixWare slices support", below. More information about the BFS 1004 file system is contained in the file 1005 <file:Documentation/filesystems/bfs.txt>. 1006 1007 If you don't know what this is about, say N. 1008 1009 To compile this as a module, choose M here: the module will be called 1010 bfs. Note that the file system of your root partition (the one 1011 containing the directory /) cannot be compiled as a module. 1012 1013 1014 1015config EFS_FS 1016 tristate "EFS file system support (read only) (EXPERIMENTAL)" 1017 depends on EXPERIMENTAL 1018 help 1019 EFS is an older file system used for non-ISO9660 CD-ROMs and hard 1020 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 1021 uses the XFS file system for hard disk partitions however). 1022 1023 This implementation only offers read-only access. If you don't know 1024 what all this is about, it's safe to say N. For more information 1025 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 1026 1027 To compile the EFS file system support as a module, choose M here: the 1028 module will be called efs. 1029 1030config JFFS_FS 1031 tristate "Journalling Flash File System (JFFS) support" 1032 depends on MTD 1033 help 1034 JFFS is the Journaling Flash File System developed by Axis 1035 Communications in Sweden, aimed at providing a crash/powerdown-safe 1036 file system for disk-less embedded devices. Further information is 1037 available at (<http://developer.axis.com/software/jffs/>). 1038 1039config JFFS_FS_VERBOSE 1040 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)" 1041 depends on JFFS_FS 1042 default "0" 1043 help 1044 Determines the verbosity level of the JFFS debugging messages. 1045 1046config JFFS_PROC_FS 1047 bool "JFFS stats available in /proc filesystem" 1048 depends on JFFS_FS && PROC 1049 help 1050 Enabling this option will cause statistics from mounted JFFS file systems 1051 to be made available to the user in the /proc/fs/jffs/ directory. 1052 1053config JFFS2_FS 1054 tristate "Journalling Flash File System v2 (JFFS2) support" 1055 depends on MTD 1056 select CRC32 1057 select ZLIB_INFLATE 1058 select ZLIB_DEFLATE 1059 help 1060 JFFS2 is the second generation of the Journalling Flash File System 1061 for use on diskless embedded devices. It provides improved wear 1062 levelling, compression and support for hard links. You cannot use 1063 this on normal block devices, only on 'MTD' devices. 1064 1065 Further information on the design and implementation of JFFS2 is 1066 available at <http://sources.redhat.com/jffs2/>. 1067 1068config JFFS2_FS_DEBUG 1069 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 1070 depends on JFFS2_FS 1071 default "0" 1072 help 1073 This controls the amount of debugging messages produced by the JFFS2 1074 code. Set it to zero for use in production systems. For evaluation, 1075 testing and debugging, it's advisable to set it to one. This will 1076 enable a few assertions and will print debugging messages at the 1077 KERN_DEBUG loglevel, where they won't normally be visible. Level 2 1078 is unlikely to be useful - it enables extra debugging in certain 1079 areas which at one point needed debugging, but when the bugs were 1080 located and fixed, the detailed messages were relegated to level 2. 1081 1082 If reporting bugs, please try to have available a full dump of the 1083 messages at debug level 1 while the misbehaviour was occurring. 1084 1085config JFFS2_FS_NAND 1086 bool "JFFS2 support for NAND flash (EXPERIMENTAL)" 1087 depends on JFFS2_FS && EXPERIMENTAL 1088 default n 1089 help 1090 This enables the experimental support for NAND flash in JFFS2. NAND 1091 is a newer type of flash chip design than the traditional NOR flash, 1092 with higher density but a handful of characteristics which make it 1093 more interesting for the file system to use. Support for NAND flash 1094 is not yet complete and may corrupt data. For further information, 1095 including a link to the mailing list where details of the remaining 1096 work to be completed for NAND flash support can be found, see the 1097 JFFS2 web site at <http://sources.redhat.com/jffs2>. 1098 1099 Say 'N' unless you have NAND flash and you are willing to test and 1100 develop JFFS2 support for it. 1101 1102config CRAMFS 1103 tristate "Compressed ROM file system support" 1104 select ZLIB_INFLATE 1105 help 1106 Saying Y here includes support for CramFs (Compressed ROM File 1107 System). CramFs is designed to be a simple, small, and compressed 1108 file system for ROM based embedded systems. CramFs is read-only, 1109 limited to 256MB file systems (with 16MB files), and doesn't support 1110 16/32 bits uid/gid, hard links and timestamps. 1111 1112 See <file:Documentation/filesystems/cramfs.txt> and 1113 <file:fs/cramfs/README> for further information. 1114 1115 To compile this as a module, choose M here: the module will be called 1116 cramfs. Note that the root file system (the one containing the 1117 directory /) cannot be compiled as a module. 1118 1119 If unsure, say N. 1120 1121config VXFS_FS 1122 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 1123 help 1124 FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 1125 file system format. VERITAS VxFS(TM) is the standard file system 1126 of SCO UnixWare (and possibly others) and optionally available 1127 for Sunsoft Solaris, HP-UX and many other operating systems. 1128 Currently only readonly access is supported. 1129 1130 NOTE: the file system type as used by mount(1), mount(2) and 1131 fstab(5) is 'vxfs' as it describes the file system format, not 1132 the actual driver. 1133 1134 To compile this as a module, choose M here: the module will be 1135 called freevxfs. If unsure, say N. 1136 1137 1138config HPFS_FS 1139 tristate "OS/2 HPFS file system support" 1140 help 1141 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1142 is the file system used for organizing files on OS/2 hard disk 1143 partitions. Say Y if you want to be able to read files from and 1144 write files to an OS/2 HPFS partition on your hard drive. OS/2 1145 floppies however are in regular MSDOS format, so you don't need this 1146 option in order to be able to read them. Read 1147 <file:Documentation/filesystems/hpfs.txt>. 1148 1149 To compile this file system support as a module, choose M here: the 1150 module will be called hpfs. If unsure, say N. 1151 1152 1153 1154config QNX4FS_FS 1155 tristate "QNX4 file system support (read only)" 1156 help 1157 This is the file system used by the real-time operating systems 1158 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1159 Further information is available at <http://www.qnx.com/>. 1160 Say Y if you intend to mount QNX hard disks or floppies. 1161 Unless you say Y to "QNX4FS read-write support" below, you will 1162 only be able to read these file systems. 1163 1164 To compile this file system support as a module, choose M here: the 1165 module will be called qnx4. 1166 1167 If you don't know whether you need it, then you don't need it: 1168 answer N. 1169 1170config QNX4FS_RW 1171 bool "QNX4FS write support (DANGEROUS)" 1172 depends on QNX4FS_FS && EXPERIMENTAL 1173 help 1174 Say Y if you want to test write support for QNX4 file systems. 1175 1176 It's currently broken, so for now: 1177 answer N. 1178 1179 1180 1181config SYSV_FS 1182 tristate "System V/Xenix/V7/Coherent file system support" 1183 help 1184 SCO, Xenix and Coherent are commercial Unix systems for Intel 1185 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1186 here would allow you to read from their floppies and hard disk 1187 partitions. 1188 1189 If you have floppies or hard disk partitions like that, it is likely 1190 that they contain binaries from those other Unix systems; in order 1191 to run these binaries, you will want to install linux-abi which is a 1192 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1193 UnixWare, Dell Unix and System V programs under Linux. It is 1194 available via FTP (user: ftp) from 1195 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1196 NOTE: that will work only for binaries from Intel-based systems; 1197 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1198 1199 If you only intend to mount files from some other Unix over the 1200 network using NFS, you don't need the System V file system support 1201 (but you need NFS file system support obviously). 1202 1203 Note that this option is generally not needed for floppies, since a 1204 good portable way to transport files and directories between unixes 1205 (and even other operating systems) is given by the tar program ("man 1206 tar" or preferably "info tar"). Note also that this option has 1207 nothing whatsoever to do with the option "System V IPC". Read about 1208 the System V file system in 1209 <file:Documentation/filesystems/sysv-fs.txt>. 1210 Saying Y here will enlarge your kernel by about 27 KB. 1211 1212 To compile this as a module, choose M here: the module will be called 1213 sysv. 1214 1215 If you haven't heard about all of this before, it's safe to say N. 1216 1217 1218 1219config UFS_FS 1220 tristate "UFS file system support (read only)" 1221 help 1222 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1223 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1224 Unixes can create and mount hard disk partitions and diskettes using 1225 this file system as well. Saying Y here will allow you to read from 1226 these partitions; if you also want to write to them, say Y to the 1227 experimental "UFS file system write support", below. Please read the 1228 file <file:Documentation/filesystems/ufs.txt> for more information. 1229 1230 If you only intend to mount files from some other Unix over the 1231 network using NFS, you don't need the UFS file system support (but 1232 you need NFS file system support obviously). 1233 1234 Note that this option is generally not needed for floppies, since a 1235 good portable way to transport files and directories between unixes 1236 (and even other operating systems) is given by the tar program ("man 1237 tar" or preferably "info tar"). 1238 1239 When accessing NeXTstep files, you may need to convert them from the 1240 NeXT character set to the Latin1 character set; use the program 1241 recode ("info recode") for this purpose. 1242 1243 To compile the UFS file system support as a module, choose M here: the 1244 module will be called ufs. 1245 1246 If you haven't heard about all of this before, it's safe to say N. 1247 1248config UFS_FS_WRITE 1249 bool "UFS file system write support (DANGEROUS)" 1250 depends on UFS_FS && EXPERIMENTAL 1251 help 1252 Say Y here if you want to try writing to UFS partitions. This is 1253 experimental, so you should back up your UFS partitions beforehand. 1254 1255endmenu 1256 1257menu "Network File Systems" 1258 depends on NET 1259 1260config NFS_FS 1261 tristate "NFS file system support" 1262 depends on INET 1263 select LOCKD 1264 select SUNRPC 1265 help 1266 If you are connected to some other (usually local) Unix computer 1267 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 1268 on that computer (the NFS server) using the Network File Sharing 1269 protocol, say Y. "Mounting files" means that the client can access 1270 the files with usual UNIX commands as if they were sitting on the 1271 client's hard disk. For this to work, the server must run the 1272 programs nfsd and mountd (but does not need to have NFS file system 1273 support enabled in its kernel). NFS is explained in the Network 1274 Administrator's Guide, available from 1275 <http://www.tldp.org/docs.html#guide>, on its man page: "man 1276 nfs", and in the NFS-HOWTO. 1277 1278 A superior but less widely used alternative to NFS is provided by 1279 the Coda file system; see "Coda file system support" below. 1280 1281 If you say Y here, you should have said Y to TCP/IP networking also. 1282 This option would enlarge your kernel by about 27 KB. 1283 1284 To compile this file system support as a module, choose M here: the 1285 module will be called nfs. 1286 1287 If you are configuring a diskless machine which will mount its root 1288 file system over NFS at boot time, say Y here and to "Kernel 1289 level IP autoconfiguration" above and to "Root file system on NFS" 1290 below. You cannot compile this driver as a module in this case. 1291 There are two packages designed for booting diskless machines over 1292 the net: netboot, available from 1293 <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 1294 available from <http://ftp1.sourceforge.net/etherboot/>. 1295 1296 If you don't know what all this is about, say N. 1297 1298config NFS_V3 1299 bool "Provide NFSv3 client support" 1300 depends on NFS_FS 1301 help 1302 Say Y here if you want your NFS client to be able to speak the newer 1303 version 3 of the NFS protocol. 1304 1305 If unsure, say N. 1306 1307config NFS_V4 1308 bool "Provide NFSv4 client support (EXPERIMENTAL)" 1309 depends on NFS_FS && EXPERIMENTAL 1310 help 1311 Say Y here if you want your NFS client to be able to speak the newer 1312 version 4 of the NFS protocol. This feature is experimental, and 1313 should only be used if you are interested in helping to test NFSv4. 1314 1315 If unsure, say N. 1316 1317config NFS_DIRECTIO 1318 bool "Allow direct I/O on NFS files (EXPERIMENTAL)" 1319 depends on NFS_FS && EXPERIMENTAL 1320 help 1321 This option enables applications to perform uncached I/O on files 1322 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 1323 is set for a file, its data is not cached in the system's page 1324 cache. Data is moved to and from user-level application buffers 1325 directly. Unlike local disk-based file systems, NFS O_DIRECT has 1326 no alignment restrictions. 1327 1328 Unless your program is designed to use O_DIRECT properly, you are 1329 much better off allowing the NFS client to manage data caching for 1330 you. Misusing O_DIRECT can cause poor server performance or network 1331 storms. This kernel build option defaults OFF to avoid exposing 1332 system administrators unwittingly to a potentially hazardous 1333 feature. 1334 1335 For more details on NFS O_DIRECT, see fs/nfs/direct.c. 1336 1337 If unsure, say N. This reduces the size of the NFS client, and 1338 causes open() to return EINVAL if a file residing in NFS is 1339 opened with the O_DIRECT flag. 1340 1341config NFSD 1342 tristate "NFS server support" 1343 depends on INET 1344 select LOCKD 1345 select SUNRPC 1346 help 1347 If you want your Linux box to act as an NFS *server*, so that other 1348 computers on your local network which support NFS can access certain 1349 directories on your box transparently, you have two options: you can 1350 use the self-contained user space program nfsd, in which case you 1351 should say N here, or you can say Y and use the kernel based NFS 1352 server. The advantage of the kernel based solution is that it is 1353 faster. 1354 1355 In either case, you will need support software; the respective 1356 locations are given in the file <file:Documentation/Changes> in the 1357 NFS section. 1358 1359 If you say Y here, you will get support for version 2 of the NFS 1360 protocol (NFSv2). If you also want NFSv3, say Y to the next question 1361 as well. 1362 1363 Please read the NFS-HOWTO, available from 1364 <http://www.tldp.org/docs.html#howto>. 1365 1366 To compile the NFS server support as a module, choose M here: the 1367 module will be called nfsd. If unsure, say N. 1368 1369config NFSD_V3 1370 bool "Provide NFSv3 server support" 1371 depends on NFSD 1372 help 1373 If you would like to include the NFSv3 server as well as the NFSv2 1374 server, say Y here. If unsure, say Y. 1375 1376config NFSD_V4 1377 bool "Provide NFSv4 server support (EXPERIMENTAL)" 1378 depends on NFSD_V3 && EXPERIMENTAL 1379 help 1380 If you would like to include the NFSv4 server as well as the NFSv2 1381 and NFSv3 servers, say Y here. This feature is experimental, and 1382 should only be used if you are interested in helping to test NFSv4. 1383 If unsure, say N. 1384 1385config NFSD_TCP 1386 bool "Provide NFS server over TCP support (EXPERIMENTAL)" 1387 depends on NFSD && EXPERIMENTAL 1388 help 1389 Enable NFS service over TCP connections. This the officially 1390 still experimental, but seems to work well. 1391 1392config ROOT_NFS 1393 bool "Root file system on NFS" 1394 depends on NFS_FS=y && IP_PNP 1395 help 1396 If you want your Linux box to mount its whole root file system (the 1397 one containing the directory /) from some other computer over the 1398 net via NFS (presumably because your box doesn't have a hard disk), 1399 say Y. Read <file:Documentation/nfsroot.txt> for details. It is 1400 likely that in this case, you also want to say Y to "Kernel level IP 1401 autoconfiguration" so that your box can discover its network address 1402 at boot time. 1403 1404 Most people say N here. 1405 1406config LOCKD 1407 tristate 1408 1409config LOCKD_V4 1410 bool 1411 depends on NFSD_V3 || NFS_V3 1412 default y 1413 1414config EXPORTFS 1415 tristate 1416 default NFSD 1417 1418config SUNRPC 1419 tristate 1420 1421config SUNRPC_GSS 1422 tristate "Provide RPCSEC_GSS authentication (EXPERIMENTAL)" 1423 depends on SUNRPC && EXPERIMENTAL 1424 default SUNRPC if NFS_V4=y 1425 help 1426 Provides cryptographic authentication for NFS rpc requests. To 1427 make this useful, you must also select at least one rpcsec_gss 1428 mechanism. 1429 Note: You should always select this option if you wish to use 1430 NFSv4. 1431 1432config RPCSEC_GSS_KRB5 1433 tristate "Kerberos V mechanism for RPCSEC_GSS (EXPERIMENTAL)" 1434 depends on SUNRPC_GSS && CRYPTO_DES && CRYPTO_MD5 1435 default SUNRPC_GSS if NFS_V4=y 1436 help 1437 Provides a gss-api mechanism based on Kerberos V5 (this is 1438 mandatory for RFC3010-compliant NFSv4 implementations). 1439 Requires a userspace daemon; 1440 see http://www.citi.umich.edu/projects/nfsv4/. 1441 1442 Note: If you select this option, please ensure that you also 1443 enable the MD5 and DES crypto ciphers. 1444 1445config SMB_FS 1446 tristate "SMB file system support (to mount Windows shares etc.)" 1447 depends on INET 1448 select NLS 1449 help 1450 SMB (Server Message Block) is the protocol Windows for Workgroups 1451 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1452 files and printers over local networks. Saying Y here allows you to 1453 mount their file systems (often called "shares" in this context) and 1454 access them just like any other Unix directory. Currently, this 1455 works only if the Windows machines use TCP/IP as the underlying 1456 transport protocol, and not NetBEUI. For details, read 1457 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1458 available from <http://www.tldp.org/docs.html#howto>. 1459 1460 Note: if you just want your box to act as an SMB *server* and make 1461 files and printing services available to Windows clients (which need 1462 to have a TCP/IP stack), you don't need to say Y here; you can use 1463 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1464 for that. 1465 1466 General information about how to connect Linux, Windows machines and 1467 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1468 1469 To compile the SMB support as a module, choose M here: the module will 1470 be called smbfs. Most people say N, however. 1471 1472config SMB_NLS_DEFAULT 1473 bool "Use a default NLS" 1474 depends on SMB_FS 1475 help 1476 Enabling this will make smbfs use nls translations by default. You 1477 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1478 settings and you need to give the default nls for the SMB server as 1479 CONFIG_SMB_NLS_REMOTE. 1480 1481 The nls settings can be changed at mount time, if your smbmount 1482 supports that, using the codepage and iocharset parameters. 1483 1484 smbmount from samba 2.2.0 or later supports this. 1485 1486config SMB_NLS_REMOTE 1487 string "Default Remote NLS Option" 1488 depends on SMB_NLS_DEFAULT 1489 default "cp437" 1490 help 1491 This setting allows you to specify a default value for which 1492 codepage the server uses. If this field is left blank no 1493 translations will be done by default. The local codepage/charset 1494 default to CONFIG_NLS_DEFAULT. 1495 1496 The nls settings can be changed at mount time, if your smbmount 1497 supports that, using the codepage and iocharset parameters. 1498 1499 smbmount from samba 2.2.0 or later supports this. 1500 1501config CIFS 1502 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)(EXPERIMENTAL)" 1503 depends on INET 1504 select NLS 1505 help 1506 This is the client VFS module for the Common Internet File System 1507 (CIFS) protocol which is the successor to the Server Message Block 1508 (SMB) protocol, the native file sharing mechanism for most early 1509 PC operating systems. CIFS is fully supported by current network 1510 file servers such as Windows 2000 (including Windows NT version 4 1511 and Windows XP) as well by Samba (which provides excellent CIFS 1512 server support for Linux and many other operating systems). For 1513 production systems the smbfs module may be used instead of this 1514 cifs module since smbfs is currently more stable and provides 1515 support for older servers. The intent of this module is to provide the 1516 most advanced network file system function for CIFS compliant servers, 1517 including support for dfs (hierarchical name space), secure per-user 1518 session establishment, safe distributed caching (oplock), optional 1519 packet signing, Unicode and other internationalization improvements, and 1520 optional Winbind (nsswitch) integration. This module is in an early 1521 development stage, so unless you are specifically interested in this 1522 filesystem, just say N. 1523 1524config NCP_FS 1525 tristate "NCP file system support (to mount NetWare volumes)" 1526 depends on IPX!=n || INET 1527 help 1528 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 1529 used by Novell NetWare clients to talk to file servers. It is to 1530 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 1531 to mount NetWare file server volumes and to access them just like 1532 any other Unix directory. For details, please read the file 1533 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 1534 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 1535 1536 You do not have to say Y here if you want your Linux box to act as a 1537 file *server* for Novell NetWare clients. 1538 1539 General information about how to connect Linux, Windows machines and 1540 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1541 1542 To compile this as a module, choose M here: the module will be called 1543 ncpfs. Say N unless you are connected to a Novell network. 1544 1545source "fs/ncpfs/Kconfig" 1546 1547config CODA_FS 1548 tristate "Coda file system support (advanced network fs)" 1549 depends on INET 1550 help 1551 Coda is an advanced network file system, similar to NFS in that it 1552 enables you to mount file systems of a remote server and access them 1553 with regular Unix commands as if they were sitting on your hard 1554 disk. Coda has several advantages over NFS: support for 1555 disconnected operation (e.g. for laptops), read/write server 1556 replication, security model for authentication and encryption, 1557 persistent client caches and write back caching. 1558 1559 If you say Y here, your Linux box will be able to act as a Coda 1560 *client*. You will need user level code as well, both for the 1561 client and server. Servers are currently user level, i.e. they need 1562 no kernel support. Please read 1563 <file:Documentation/filesystems/coda.txt> and check out the Coda 1564 home page <http://www.coda.cs.cmu.edu/>. 1565 1566 To compile the coda client support as a module, choose M here: the 1567 module will be called coda. 1568 1569config CODA_FS_OLD_API 1570 bool "Use 96-bit Coda file identifiers" 1571 depends on CODA_FS 1572 help 1573 A new kernel-userspace API had to be introduced for Coda v6.0 1574 to support larger 128-bit file identifiers as needed by the 1575 new realms implementation. 1576 1577 However this new API is not backward compatible with older 1578 clients. If you really need to run the old Coda userspace 1579 cache manager then say Y. 1580 1581 For most cases you probably want to say N. 1582 1583config INTERMEZZO_FS 1584 tristate "InterMezzo file system support (replicating fs) (EXPERIMENTAL)" 1585 depends on INET && EXPERIMENTAL 1586 help 1587 InterMezzo is a networked file system with disconnected operation 1588 and kernel level write back caching. It is most often used for 1589 replicating potentially large trees or keeping laptop/desktop copies 1590 in sync. 1591 1592 If you say Y or M your kernel or module will provide InterMezzo 1593 support. You will also need a file server daemon, which you can get 1594 from <http://www.inter-mezzo.org/>. 1595 1596config AFS_FS 1597# for fs/nls/Config.in 1598 tristate "Andrew File System support (AFS) (Experimental)" 1599 depends on INET && EXPERIMENTAL 1600 select RXRPC 1601 help 1602 If you say Y here, you will get an experimental Andrew File System 1603 driver. It currently only supports unsecured read-only AFS access. 1604 1605 See Documentation/filesystems/afs.txt for more intormation. 1606 1607 If unsure, say N. 1608 1609config RXRPC 1610 tristate 1611 1612endmenu 1613 1614menu "Partition Types" 1615 1616source "fs/partitions/Kconfig" 1617 1618endmenu 1619 1620source "fs/nls/Kconfig" 1621 1622endmenu 1623 1624

