1# 2# File system configuration 3# 4 5menu "File systems" 6 7if BLOCK 8 9config EXT2_FS 10 tristate "Second extended fs support" 11 help 12 Ext2 is a standard Linux file system for hard disks. 13 14 To compile this file system support as a module, choose M here: the 15 module will be called ext2. 16 17 If unsure, say Y. 18 19config EXT2_FS_XATTR 20 bool "Ext2 extended attributes" 21 depends on EXT2_FS 22 help 23 Extended attributes are name:value pairs associated with inodes by 24 the kernel or by users (see the attr(5) manual page, or visit 25 <http://acl.bestbits.at/> for details). 26 27 If unsure, say N. 28 29config EXT2_FS_POSIX_ACL 30 bool "Ext2 POSIX Access Control Lists" 31 depends on EXT2_FS_XATTR 32 select FS_POSIX_ACL 33 help 34 Posix Access Control Lists (ACLs) support permissions for users and 35 groups beyond the owner/group/world scheme. 36 37 To learn more about Access Control Lists, visit the Posix ACLs for 38 Linux website <http://acl.bestbits.at/>. 39 40 If you don't know what Access Control Lists are, say N 41 42config EXT2_FS_SECURITY 43 bool "Ext2 Security Labels" 44 depends on EXT2_FS_XATTR 45 help 46 Security labels support alternative access control models 47 implemented by security modules like SELinux. This option 48 enables an extended attribute handler for file security 49 labels in the ext2 filesystem. 50 51 If you are not using a security module that requires using 52 extended attributes for file security labels, say N. 53 54config EXT2_FS_XIP 55 bool "Ext2 execute in place support" 56 depends on EXT2_FS && MMU 57 help 58 Execute in place can be used on memory-backed block devices. If you 59 enable this option, you can select to mount block devices which are 60 capable of this feature without using the page cache. 61 62 If you do not use a block device that is capable of using this, 63 or if unsure, say N. 64 65config FS_XIP 66# execute in place 67 bool 68 depends on EXT2_FS_XIP 69 default y 70 71config EXT3_FS 72 tristate "Ext3 journalling file system support" 73 select JBD 74 help 75 This is the journalling version of the Second extended file system 76 (often called ext3), the de facto standard Linux file system 77 (method to organize files on a storage device) for hard disks. 78 79 The journalling code included in this driver means you do not have 80 to run e2fsck (file system checker) on your file systems after a 81 crash. The journal keeps track of any changes that were being made 82 at the time the system crashed, and can ensure that your file system 83 is consistent without the need for a lengthy check. 84 85 Other than adding the journal to the file system, the on-disk format 86 of ext3 is identical to ext2. It is possible to freely switch 87 between using the ext3 driver and the ext2 driver, as long as the 88 file system has been cleanly unmounted, or e2fsck is run on the file 89 system. 90 91 To add a journal on an existing ext2 file system or change the 92 behavior of ext3 file systems, you can use the tune2fs utility ("man 93 tune2fs"). To modify attributes of files and directories on ext3 94 file systems, use chattr ("man chattr"). You need to be using 95 e2fsprogs version 1.20 or later in order to create ext3 journals 96 (available at <http://sourceforge.net/projects/e2fsprogs/>). 97 98 To compile this file system support as a module, choose M here: the 99 module will be called ext3. 100 101config EXT3_FS_XATTR 102 bool "Ext3 extended attributes" 103 depends on EXT3_FS 104 default y 105 help 106 Extended attributes are name:value pairs associated with inodes by 107 the kernel or by users (see the attr(5) manual page, or visit 108 <http://acl.bestbits.at/> for details). 109 110 If unsure, say N. 111 112 You need this for POSIX ACL support on ext3. 113 114config EXT3_FS_POSIX_ACL 115 bool "Ext3 POSIX Access Control Lists" 116 depends on EXT3_FS_XATTR 117 select FS_POSIX_ACL 118 help 119 Posix Access Control Lists (ACLs) support permissions for users and 120 groups beyond the owner/group/world scheme. 121 122 To learn more about Access Control Lists, visit the Posix ACLs for 123 Linux website <http://acl.bestbits.at/>. 124 125 If you don't know what Access Control Lists are, say N 126 127config EXT3_FS_SECURITY 128 bool "Ext3 Security Labels" 129 depends on EXT3_FS_XATTR 130 help 131 Security labels support alternative access control models 132 implemented by security modules like SELinux. This option 133 enables an extended attribute handler for file security 134 labels in the ext3 filesystem. 135 136 If you are not using a security module that requires using 137 extended attributes for file security labels, say N. 138 139config EXT4DEV_FS 140 tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)" 141 depends on EXPERIMENTAL 142 select JBD2 143 select CRC16 144 help 145 Ext4dev is a predecessor filesystem of the next generation 146 extended fs ext4, based on ext3 filesystem code. It will be 147 renamed ext4 fs later, once ext4dev is mature and stabilized. 148 149 Unlike the change from ext2 filesystem to ext3 filesystem, 150 the on-disk format of ext4dev is not the same as ext3 any more: 151 it is based on extent maps and it supports 48-bit physical block 152 numbers. These combined on-disk format changes will allow 153 ext4dev/ext4 to handle more than 16 TB filesystem volumes -- 154 a hard limit that ext3 cannot overcome without changing the 155 on-disk format. 156 157 Other than extent maps and 48-bit block numbers, ext4dev also is 158 likely to have other new features such as persistent preallocation, 159 high resolution time stamps, and larger file support etc. These 160 features will be added to ext4dev gradually. 161 162 To compile this file system support as a module, choose M here. The 163 module will be called ext4dev. 164 165 If unsure, say N. 166 167config EXT4DEV_FS_XATTR 168 bool "Ext4dev extended attributes" 169 depends on EXT4DEV_FS 170 default y 171 help 172 Extended attributes are name:value pairs associated with inodes by 173 the kernel or by users (see the attr(5) manual page, or visit 174 <http://acl.bestbits.at/> for details). 175 176 If unsure, say N. 177 178 You need this for POSIX ACL support on ext4dev/ext4. 179 180config EXT4DEV_FS_POSIX_ACL 181 bool "Ext4dev POSIX Access Control Lists" 182 depends on EXT4DEV_FS_XATTR 183 select FS_POSIX_ACL 184 help 185 POSIX Access Control Lists (ACLs) support permissions for users and 186 groups beyond the owner/group/world scheme. 187 188 To learn more about Access Control Lists, visit the POSIX ACLs for 189 Linux website <http://acl.bestbits.at/>. 190 191 If you don't know what Access Control Lists are, say N 192 193config EXT4DEV_FS_SECURITY 194 bool "Ext4dev Security Labels" 195 depends on EXT4DEV_FS_XATTR 196 help 197 Security labels support alternative access control models 198 implemented by security modules like SELinux. This option 199 enables an extended attribute handler for file security 200 labels in the ext4dev/ext4 filesystem. 201 202 If you are not using a security module that requires using 203 extended attributes for file security labels, say N. 204 205config JBD 206 tristate 207 help 208 This is a generic journalling layer for block devices. It is 209 currently used by the ext3 and OCFS2 file systems, but it could 210 also be used to add journal support to other file systems or block 211 devices such as RAID or LVM. 212 213 If you are using the ext3 or OCFS2 file systems, you need to 214 say Y here. If you are not using ext3 OCFS2 then you will probably 215 want to say N. 216 217 To compile this device as a module, choose M here: the module will be 218 called jbd. If you are compiling ext3 or OCFS2 into the kernel, 219 you cannot compile this code as a module. 220 221config JBD_DEBUG 222 bool "JBD (ext3) debugging support" 223 depends on JBD && DEBUG_FS 224 help 225 If you are using the ext3 journaled file system (or potentially any 226 other file system/device using JBD), this option allows you to 227 enable debugging output while the system is running, in order to 228 help track down any problems you are having. By default the 229 debugging output will be turned off. 230 231 If you select Y here, then you will be able to turn on debugging 232 with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a 233 number between 1 and 5, the higher the number, the more debugging 234 output is generated. To turn debugging off again, do 235 "echo 0 > /sys/kernel/debug/jbd/jbd-debug". 236 237config JBD2 238 tristate 239 help 240 This is a generic journaling layer for block devices that support 241 both 32-bit and 64-bit block numbers. It is currently used by 242 the ext4dev/ext4 filesystem, but it could also be used to add 243 journal support to other file systems or block devices such 244 as RAID or LVM. 245 246 If you are using ext4dev/ext4, you need to say Y here. If you are not 247 using ext4dev/ext4 then you will probably want to say N. 248 249 To compile this device as a module, choose M here. The module will be 250 called jbd2. If you are compiling ext4dev/ext4 into the kernel, 251 you cannot compile this code as a module. 252 253config JBD2_DEBUG 254 bool "JBD2 (ext4dev/ext4) debugging support" 255 depends on JBD2 && DEBUG_FS 256 help 257 If you are using the ext4dev/ext4 journaled file system (or 258 potentially any other filesystem/device using JBD2), this option 259 allows you to enable debugging output while the system is running, 260 in order to help track down any problems you are having. 261 By default, the debugging output will be turned off. 262 263 If you select Y here, then you will be able to turn on debugging 264 with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a 265 number between 1 and 5. The higher the number, the more debugging 266 output is generated. To turn debugging off again, do 267 "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug". 268 269config FS_MBCACHE 270# Meta block cache for Extended Attributes (ext2/ext3/ext4) 271 tristate 272 depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR 273 default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y 274 default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m 275 276config REISERFS_FS 277 tristate "Reiserfs support" 278 help 279 Stores not just filenames but the files themselves in a balanced 280 tree. Uses journalling. 281 282 Balanced trees are more efficient than traditional file system 283 architectural foundations. 284 285 In general, ReiserFS is as fast as ext2, but is very efficient with 286 large directories and small files. Additional patches are needed 287 for NFS and quotas, please see <http://www.namesys.com/> for links. 288 289 It is more easily extended to have features currently found in 290 database and keyword search systems than block allocation based file 291 systems are. The next version will be so extended, and will support 292 plugins consistent with our motto ``It takes more than a license to 293 make source code open.'' 294 295 Read <http://www.namesys.com/> to learn more about reiserfs. 296 297 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 298 299 If you like it, you can pay us to add new features to it that you 300 need, buy a support contract, or pay us to port it to another OS. 301 302config REISERFS_CHECK 303 bool "Enable reiserfs debug mode" 304 depends on REISERFS_FS 305 help 306 If you set this to Y, then ReiserFS will perform every check it can 307 possibly imagine of its internal consistency throughout its 308 operation. It will also go substantially slower. More than once we 309 have forgotten that this was on, and then gone despondent over the 310 latest benchmarks.:-) Use of this option allows our team to go all 311 out in checking for consistency when debugging without fear of its 312 effect on end users. If you are on the verge of sending in a bug 313 report, say Y and you might get a useful error message. Almost 314 everyone should say N. 315 316config REISERFS_PROC_INFO 317 bool "Stats in /proc/fs/reiserfs" 318 depends on REISERFS_FS && PROC_FS 319 help 320 Create under /proc/fs/reiserfs a hierarchy of files, displaying 321 various ReiserFS statistics and internal data at the expense of 322 making your kernel or module slightly larger (+8 KB). This also 323 increases the amount of kernel memory required for each mount. 324 Almost everyone but ReiserFS developers and people fine-tuning 325 reiserfs or tracing problems should say N. 326 327config REISERFS_FS_XATTR 328 bool "ReiserFS extended attributes" 329 depends on REISERFS_FS 330 help 331 Extended attributes are name:value pairs associated with inodes by 332 the kernel or by users (see the attr(5) manual page, or visit 333 <http://acl.bestbits.at/> for details). 334 335 If unsure, say N. 336 337config REISERFS_FS_POSIX_ACL 338 bool "ReiserFS POSIX Access Control Lists" 339 depends on REISERFS_FS_XATTR 340 select FS_POSIX_ACL 341 help 342 Posix Access Control Lists (ACLs) support permissions for users and 343 groups beyond the owner/group/world scheme. 344 345 To learn more about Access Control Lists, visit the Posix ACLs for 346 Linux website <http://acl.bestbits.at/>. 347 348 If you don't know what Access Control Lists are, say N 349 350config REISERFS_FS_SECURITY 351 bool "ReiserFS Security Labels" 352 depends on REISERFS_FS_XATTR 353 help 354 Security labels support alternative access control models 355 implemented by security modules like SELinux. This option 356 enables an extended attribute handler for file security 357 labels in the ReiserFS filesystem. 358 359 If you are not using a security module that requires using 360 extended attributes for file security labels, say N. 361 362config JFS_FS 363 tristate "JFS filesystem support" 364 select NLS 365 help 366 This is a port of IBM's Journaled Filesystem . More information is 367 available in the file <file:Documentation/filesystems/jfs.txt>. 368 369 If you do not intend to use the JFS filesystem, say N. 370 371config JFS_POSIX_ACL 372 bool "JFS POSIX Access Control Lists" 373 depends on JFS_FS 374 select FS_POSIX_ACL 375 help 376 Posix Access Control Lists (ACLs) support permissions for users and 377 groups beyond the owner/group/world scheme. 378 379 To learn more about Access Control Lists, visit the Posix ACLs for 380 Linux website <http://acl.bestbits.at/>. 381 382 If you don't know what Access Control Lists are, say N 383 384config JFS_SECURITY 385 bool "JFS Security Labels" 386 depends on JFS_FS 387 help 388 Security labels support alternative access control models 389 implemented by security modules like SELinux. This option 390 enables an extended attribute handler for file security 391 labels in the jfs filesystem. 392 393 If you are not using a security module that requires using 394 extended attributes for file security labels, say N. 395 396config JFS_DEBUG 397 bool "JFS debugging" 398 depends on JFS_FS 399 help 400 If you are experiencing any problems with the JFS filesystem, say 401 Y here. This will result in additional debugging messages to be 402 written to the system log. Under normal circumstances, this 403 results in very little overhead. 404 405config JFS_STATISTICS 406 bool "JFS statistics" 407 depends on JFS_FS 408 help 409 Enabling this option will cause statistics from the JFS file system 410 to be made available to the user in the /proc/fs/jfs/ directory. 411 412config FS_POSIX_ACL 413# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs) 414# 415# NOTE: you can implement Posix ACLs without these helpers (XFS does). 416# Never use this symbol for ifdefs. 417# 418 bool 419 default n 420 421source "fs/xfs/Kconfig" 422source "fs/gfs2/Kconfig" 423 424config OCFS2_FS 425 tristate "OCFS2 file system support" 426 depends on NET && SYSFS 427 select CONFIGFS_FS 428 select JBD 429 select CRC32 430 help 431 OCFS2 is a general purpose extent based shared disk cluster file 432 system with many similarities to ext3. It supports 64 bit inode 433 numbers, and has automatically extending metadata groups which may 434 also make it attractive for non-clustered use. 435 436 You'll want to install the ocfs2-tools package in order to at least 437 get "mount.ocfs2". 438 439 Project web page: http://oss.oracle.com/projects/ocfs2 440 Tools web page: http://oss.oracle.com/projects/ocfs2-tools 441 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/ 442 443 Note: Features which OCFS2 does not support yet: 444 - extended attributes 445 - quotas 446 - cluster aware flock 447 - Directory change notification (F_NOTIFY) 448 - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease) 449 - POSIX ACLs 450 - readpages / writepages (not user visible) 451 452config OCFS2_DEBUG_MASKLOG 453 bool "OCFS2 logging support" 454 depends on OCFS2_FS 455 default y 456 help 457 The ocfs2 filesystem has an extensive logging system. The system 458 allows selection of events to log via files in /sys/o2cb/logmask/. 459 This option will enlarge your kernel, but it allows debugging of 460 ocfs2 filesystem issues. 461 462config MINIX_FS 463 tristate "Minix fs support" 464 help 465 Minix is a simple operating system used in many classes about OS's. 466 The minix file system (method to organize files on a hard disk 467 partition or a floppy disk) was the original file system for Linux, 468 but has been superseded by the second extended file system ext2fs. 469 You don't want to use the minix file system on your hard disk 470 because of certain built-in restrictions, but it is sometimes found 471 on older Linux floppy disks. This option will enlarge your kernel 472 by about 28 KB. If unsure, say N. 473 474 To compile this file system support as a module, choose M here: the 475 module will be called minix. Note that the file system of your root 476 partition (the one containing the directory /) cannot be compiled as 477 a module. 478 479config ROMFS_FS 480 tristate "ROM file system support" 481 ---help--- 482 This is a very small read-only file system mainly intended for 483 initial ram disks of installation disks, but it could be used for 484 other read-only media as well. Read 485 <file:Documentation/filesystems/romfs.txt> for details. 486 487 To compile this file system support as a module, choose M here: the 488 module will be called romfs. Note that the file system of your 489 root partition (the one containing the directory /) cannot be a 490 module. 491 492 If you don't know whether you need it, then you don't need it: 493 answer N. 494 495endif 496 497config INOTIFY 498 bool "Inotify file change notification support" 499 default y 500 ---help--- 501 Say Y here to enable inotify support. Inotify is a file change 502 notification system and a replacement for dnotify. Inotify fixes 503 numerous shortcomings in dnotify and introduces several new features 504 including multiple file events, one-shot support, and unmount 505 notification. 506 507 For more information, see <file:Documentation/filesystems/inotify.txt> 508 509 If unsure, say Y. 510 511config INOTIFY_USER 512 bool "Inotify support for userspace" 513 depends on INOTIFY 514 default y 515 ---help--- 516 Say Y here to enable inotify support for userspace, including the 517 associated system calls. Inotify allows monitoring of both files and 518 directories via a single open fd. Events are read from the file 519 descriptor, which is also select()- and poll()-able. 520 521 For more information, see <file:Documentation/filesystems/inotify.txt> 522 523 If unsure, say Y. 524 525config QUOTA 526 bool "Quota support" 527 help 528 If you say Y here, you will be able to set per user limits for disk 529 usage (also called disk quotas). Currently, it works for the 530 ext2, ext3, and reiserfs file system. ext3 also supports journalled 531 quotas for which you don't need to run quotacheck(8) after an unclean 532 shutdown. 533 For further details, read the Quota mini-HOWTO, available from 534 <http://www.tldp.org/docs.html#howto>, or the documentation provided 535 with the quota tools. Probably the quota support is only useful for 536 multi user systems. If unsure, say N. 537 538config QUOTA_NETLINK_INTERFACE 539 bool "Report quota messages through netlink interface" 540 depends on QUOTA && NET 541 help 542 If you say Y here, quota warnings (about exceeding softlimit, reaching 543 hardlimit, etc.) will be reported through netlink interface. If unsure, 544 say Y. 545 546config PRINT_QUOTA_WARNING 547 bool "Print quota warnings to console (OBSOLETE)" 548 depends on QUOTA 549 default y 550 help 551 If you say Y here, quota warnings (about exceeding softlimit, reaching 552 hardlimit, etc.) will be printed to the process' controlling terminal. 553 Note that this behavior is currently deprecated and may go away in 554 future. Please use notification via netlink socket instead. 555 556config QFMT_V1 557 tristate "Old quota format support" 558 depends on QUOTA 559 help 560 This quota format was (is) used by kernels earlier than 2.4.22. If 561 you have quota working and you don't want to convert to new quota 562 format say Y here. 563 564config QFMT_V2 565 tristate "Quota format v2 support" 566 depends on QUOTA 567 help 568 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 569 need this functionality say Y here. 570 571config QUOTACTL 572 bool 573 depends on XFS_QUOTA || QUOTA 574 default y 575 576config DNOTIFY 577 bool "Dnotify support" 578 default y 579 help 580 Dnotify is a directory-based per-fd file change notification system 581 that uses signals to communicate events to user-space. There exist 582 superior alternatives, but some applications may still rely on 583 dnotify. 584 585 If unsure, say Y. 586 587config AUTOFS_FS 588 tristate "Kernel automounter support" 589 help 590 The automounter is a tool to automatically mount remote file systems 591 on demand. This implementation is partially kernel-based to reduce 592 overhead in the already-mounted case; this is unlike the BSD 593 automounter (amd), which is a pure user space daemon. 594 595 To use the automounter you need the user-space tools from the autofs 596 package; you can find the location in <file:Documentation/Changes>. 597 You also want to answer Y to "NFS file system support", below. 598 599 If you want to use the newer version of the automounter with more 600 features, say N here and say Y to "Kernel automounter v4 support", 601 below. 602 603 To compile this support as a module, choose M here: the module will be 604 called autofs. 605 606 If you are not a part of a fairly large, distributed network, you 607 probably do not need an automounter, and can say N here. 608 609config AUTOFS4_FS 610 tristate "Kernel automounter version 4 support (also supports v3)" 611 help 612 The automounter is a tool to automatically mount remote file systems 613 on demand. This implementation is partially kernel-based to reduce 614 overhead in the already-mounted case; this is unlike the BSD 615 automounter (amd), which is a pure user space daemon. 616 617 To use the automounter you need the user-space tools from 618 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 619 want to answer Y to "NFS file system support", below. 620 621 To compile this support as a module, choose M here: the module will be 622 called autofs4. You will need to add "alias autofs autofs4" to your 623 modules configuration file. 624 625 If you are not a part of a fairly large, distributed network or 626 don't have a laptop which needs to dynamically reconfigure to the 627 local network, you probably do not need an automounter, and can say 628 N here. 629 630config FUSE_FS 631 tristate "Filesystem in Userspace support" 632 help 633 With FUSE it is possible to implement a fully functional filesystem 634 in a userspace program. 635 636 There's also companion library: libfuse. This library along with 637 utilities is available from the FUSE homepage: 638 <http://fuse.sourceforge.net/> 639 640 See <file:Documentation/filesystems/fuse.txt> for more information. 641 See <file:Documentation/Changes> for needed library/utility version. 642 643 If you want to develop a userspace FS, or if you want to use 644 a filesystem based on FUSE, answer Y or M. 645 646config GENERIC_ACL 647 bool 648 select FS_POSIX_ACL 649 650if BLOCK 651menu "CD-ROM/DVD Filesystems" 652 653config ISO9660_FS 654 tristate "ISO 9660 CDROM file system support" 655 help 656 This is the standard file system used on CD-ROMs. It was previously 657 known as "High Sierra File System" and is called "hsfs" on other 658 Unix systems. The so-called Rock-Ridge extensions which allow for 659 long Unix filenames and symbolic links are also supported by this 660 driver. If you have a CD-ROM drive and want to do more with it than 661 just listen to audio CDs and watch its LEDs, say Y (and read 662 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 663 available from <http://www.tldp.org/docs.html#howto>), thereby 664 enlarging your kernel by about 27 KB; otherwise say N. 665 666 To compile this file system support as a module, choose M here: the 667 module will be called isofs. 668 669config JOLIET 670 bool "Microsoft Joliet CDROM extensions" 671 depends on ISO9660_FS 672 select NLS 673 help 674 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 675 which allows for long filenames in unicode format (unicode is the 676 new 16 bit character code, successor to ASCII, which encodes the 677 characters of almost all languages of the world; see 678 <http://www.unicode.org/> for more information). Say Y here if you 679 want to be able to read Joliet CD-ROMs under Linux. 680 681config ZISOFS 682 bool "Transparent decompression extension" 683 depends on ISO9660_FS 684 select ZLIB_INFLATE 685 help 686 This is a Linux-specific extension to RockRidge which lets you store 687 data in compressed form on a CD-ROM and have it transparently 688 decompressed when the CD-ROM is accessed. See 689 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 690 necessary to create such a filesystem. Say Y here if you want to be 691 able to read such compressed CD-ROMs. 692 693config UDF_FS 694 tristate "UDF file system support" 695 help 696 This is the new file system used on some CD-ROMs and DVDs. Say Y if 697 you intend to mount DVD discs or CDRW's written in packet mode, or 698 if written to by other UDF utilities, such as DirectCD. 699 Please read <file:Documentation/filesystems/udf.txt>. 700 701 To compile this file system support as a module, choose M here: the 702 module will be called udf. 703 704 If unsure, say N. 705 706config UDF_NLS 707 bool 708 default y 709 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 710 711endmenu 712endif 713 714if BLOCK 715menu "DOS/FAT/NT Filesystems" 716 717config FAT_FS 718 tristate 719 select NLS 720 help 721 If you want to use one of the FAT-based file systems (the MS-DOS and 722 VFAT (Windows 95) file systems), then you must say Y or M here 723 to include FAT support. You will then be able to mount partitions or 724 diskettes with FAT-based file systems and transparently access the 725 files on them, i.e. MSDOS files will look and behave just like all 726 other Unix files. 727 728 This FAT support is not a file system in itself, it only provides 729 the foundation for the other file systems. You will have to say Y or 730 M to at least one of "MSDOS fs support" or "VFAT fs support" in 731 order to make use of it. 732 733 Another way to read and write MSDOS floppies and hard drive 734 partitions from within Linux (but not transparently) is with the 735 mtools ("man mtools") program suite. You don't need to say Y here in 736 order to do that. 737 738 If you need to move large files on floppies between a DOS and a 739 Linux box, say Y here, mount the floppy under Linux with an MSDOS 740 file system and use GNU tar's M option. GNU tar is a program 741 available for Unix and DOS ("man tar" or "info tar"). 742 743 The FAT support will enlarge your kernel by about 37 KB. If unsure, 744 say Y. 745 746 To compile this as a module, choose M here: the module will be called 747 fat. Note that if you compile the FAT support as a module, you 748 cannot compile any of the FAT-based file systems into the kernel 749 -- they will have to be modules as well. 750 751config MSDOS_FS 752 tristate "MSDOS fs support" 753 select FAT_FS 754 help 755 This allows you to mount MSDOS partitions of your hard drive (unless 756 they are compressed; to access compressed MSDOS partitions under 757 Linux, you can either use the DOS emulator DOSEMU, described in the 758 DOSEMU-HOWTO, available from 759 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 760 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 761 intend to use dosemu with a non-compressed MSDOS partition, say Y 762 here) and MSDOS floppies. This means that file access becomes 763 transparent, i.e. the MSDOS files look and behave just like all 764 other Unix files. 765 766 If you have Windows 95 or Windows NT installed on your MSDOS 767 partitions, you should use the VFAT file system (say Y to "VFAT fs 768 support" below), or you will not be able to see the long filenames 769 generated by Windows 95 / Windows NT. 770 771 This option will enlarge your kernel by about 7 KB. If unsure, 772 answer Y. This will only work if you said Y to "DOS FAT fs support" 773 as well. To compile this as a module, choose M here: the module will 774 be called msdos. 775 776config VFAT_FS 777 tristate "VFAT (Windows-95) fs support" 778 select FAT_FS 779 help 780 This option provides support for normal Windows file systems with 781 long filenames. That includes non-compressed FAT-based file systems 782 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 783 programs from the mtools package. 784 785 The VFAT support enlarges your kernel by about 10 KB and it only 786 works if you said Y to the "DOS FAT fs support" above. Please read 787 the file <file:Documentation/filesystems/vfat.txt> for details. If 788 unsure, say Y. 789 790 To compile this as a module, choose M here: the module will be called 791 vfat. 792 793config FAT_DEFAULT_CODEPAGE 794 int "Default codepage for FAT" 795 depends on MSDOS_FS || VFAT_FS 796 default 437 797 help 798 This option should be set to the codepage of your FAT filesystems. 799 It can be overridden with the "codepage" mount option. 800 See <file:Documentation/filesystems/vfat.txt> for more information. 801 802config FAT_DEFAULT_IOCHARSET 803 string "Default iocharset for FAT" 804 depends on VFAT_FS 805 default "iso8859-1" 806 help 807 Set this to the default input/output character set you'd 808 like FAT to use. It should probably match the character set 809 that most of your FAT filesystems use, and can be overridden 810 with the "iocharset" mount option for FAT filesystems. 811 Note that "utf8" is not recommended for FAT filesystems. 812 If unsure, you shouldn't set "utf8" here. 813 See <file:Documentation/filesystems/vfat.txt> for more information. 814 815config NTFS_FS 816 tristate "NTFS file system support" 817 select NLS 818 help 819 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 820 821 Saying Y or M here enables read support. There is partial, but 822 safe, write support available. For write support you must also 823 say Y to "NTFS write support" below. 824 825 There are also a number of user-space tools available, called 826 ntfsprogs. These include ntfsundelete and ntfsresize, that work 827 without NTFS support enabled in the kernel. 828 829 This is a rewrite from scratch of Linux NTFS support and replaced 830 the old NTFS code starting with Linux 2.5.11. A backport to 831 the Linux 2.4 kernel series is separately available as a patch 832 from the project web site. 833 834 For more information see <file:Documentation/filesystems/ntfs.txt> 835 and <http://linux-ntfs.sourceforge.net/>. 836 837 To compile this file system support as a module, choose M here: the 838 module will be called ntfs. 839 840 If you are not using Windows NT, 2000, XP or 2003 in addition to 841 Linux on your computer it is safe to say N. 842 843config NTFS_DEBUG 844 bool "NTFS debugging support" 845 depends on NTFS_FS 846 help 847 If you are experiencing any problems with the NTFS file system, say 848 Y here. This will result in additional consistency checks to be 849 performed by the driver as well as additional debugging messages to 850 be written to the system log. Note that debugging messages are 851 disabled by default. To enable them, supply the option debug_msgs=1 852 at the kernel command line when booting the kernel or as an option 853 to insmod when loading the ntfs module. Once the driver is active, 854 you can enable debugging messages by doing (as root): 855 echo 1 > /proc/sys/fs/ntfs-debug 856 Replacing the "1" with "0" would disable debug messages. 857 858 If you leave debugging messages disabled, this results in little 859 overhead, but enabling debug messages results in very significant 860 slowdown of the system. 861 862 When reporting bugs, please try to have available a full dump of 863 debugging messages while the misbehaviour was occurring. 864 865config NTFS_RW 866 bool "NTFS write support" 867 depends on NTFS_FS 868 help 869 This enables the partial, but safe, write support in the NTFS driver. 870 871 The only supported operation is overwriting existing files, without 872 changing the file length. No file or directory creation, deletion or 873 renaming is possible. Note only non-resident files can be written to 874 so you may find that some very small files (<500 bytes or so) cannot 875 be written to. 876 877 While we cannot guarantee that it will not damage any data, we have 878 so far not received a single report where the driver would have 879 damaged someones data so we assume it is perfectly safe to use. 880 881 Note: While write support is safe in this version (a rewrite from 882 scratch of the NTFS support), it should be noted that the old NTFS 883 write support, included in Linux 2.5.10 and before (since 1997), 884 is not safe. 885 886 This is currently useful with TopologiLinux. TopologiLinux is run 887 on top of any DOS/Microsoft Windows system without partitioning your 888 hard disk. Unlike other Linux distributions TopologiLinux does not 889 need its own partition. For more information see 890 <http://topologi-linux.sourceforge.net/> 891 892 It is perfectly safe to say N here. 893 894endmenu 895endif 896 897menu "Pseudo filesystems" 898 899config PROC_FS 900 bool "/proc file system support" if EMBEDDED 901 default y 902 help 903 This is a virtual file system providing information about the status 904 of the system. "Virtual" means that it doesn't take up any space on 905 your hard disk: the files are created on the fly by the kernel when 906 you try to access them. Also, you cannot read the files with older 907 version of the program less: you need to use more or cat. 908 909 It's totally cool; for example, "cat /proc/interrupts" gives 910 information about what the different IRQs are used for at the moment 911 (there is a small number of Interrupt ReQuest lines in your computer 912 that are used by the attached devices to gain the CPU's attention -- 913 often a source of trouble if two devices are mistakenly configured 914 to use the same IRQ). The program procinfo to display some 915 information about your system gathered from the /proc file system. 916 917 Before you can use the /proc file system, it has to be mounted, 918 meaning it has to be given a location in the directory hierarchy. 919 That location should be /proc. A command such as "mount -t proc proc 920 /proc" or the equivalent line in /etc/fstab does the job. 921 922 The /proc file system is explained in the file 923 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 924 ("man 5 proc"). 925 926 This option will enlarge your kernel by about 67 KB. Several 927 programs depend on this, so everyone should say Y here. 928 929config PROC_KCORE 930 bool "/proc/kcore support" if !ARM 931 depends on PROC_FS && MMU 932 933config PROC_VMCORE 934 bool "/proc/vmcore support (EXPERIMENTAL)" 935 depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP 936 default y 937 help 938 Exports the dump image of crashed kernel in ELF format. 939 940config PROC_SYSCTL 941 bool "Sysctl support (/proc/sys)" if EMBEDDED 942 depends on PROC_FS 943 select SYSCTL 944 default y 945 ---help--- 946 The sysctl interface provides a means of dynamically changing 947 certain kernel parameters and variables on the fly without requiring 948 a recompile of the kernel or reboot of the system. The primary 949 interface is through /proc/sys. If you say Y here a tree of 950 modifiable sysctl entries will be generated beneath the 951 /proc/sys directory. They are explained in the files 952 in <file:Documentation/sysctl/>. Note that enabling this 953 option will enlarge the kernel by at least 8 KB. 954 955 As it is generally a good thing, you should say Y here unless 956 building a kernel for install/rescue disks or your system is very 957 limited in memory. 958 959config SYSFS 960 bool "sysfs file system support" if EMBEDDED 961 default y 962 help 963 The sysfs filesystem is a virtual filesystem that the kernel uses to 964 export internal kernel objects, their attributes, and their 965 relationships to one another. 966 967 Users can use sysfs to ascertain useful information about the running 968 kernel, such as the devices the kernel has discovered on each bus and 969 which driver each is bound to. sysfs can also be used to tune devices 970 and other kernel subsystems. 971 972 Some system agents rely on the information in sysfs to operate. 973 /sbin/hotplug uses device and object attributes in sysfs to assist in 974 delegating policy decisions, like persistently naming devices. 975 976 sysfs is currently used by the block subsystem to mount the root 977 partition. If sysfs is disabled you must specify the boot device on 978 the kernel boot command line via its major and minor numbers. For 979 example, "root=03:01" for /dev/hda1. 980 981 Designers of embedded systems may wish to say N here to conserve space. 982 983config TMPFS 984 bool "Virtual memory file system support (former shm fs)" 985 help 986 Tmpfs is a file system which keeps all files in virtual memory. 987 988 Everything in tmpfs is temporary in the sense that no files will be 989 created on your hard drive. The files live in memory and swap 990 space. If you unmount a tmpfs instance, everything stored therein is 991 lost. 992 993 See <file:Documentation/filesystems/tmpfs.txt> for details. 994 995config TMPFS_POSIX_ACL 996 bool "Tmpfs POSIX Access Control Lists" 997 depends on TMPFS 998 select GENERIC_ACL 999 help 1000 POSIX Access Control Lists (ACLs) support permissions for users and 1001 groups beyond the owner/group/world scheme. 1002 1003 To learn more about Access Control Lists, visit the POSIX ACLs for 1004 Linux website <http://acl.bestbits.at/>. 1005 1006 If you don't know what Access Control Lists are, say N. 1007 1008config HUGETLBFS 1009 bool "HugeTLB file system support" 1010 depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN 1011 help 1012 hugetlbfs is a filesystem backing for HugeTLB pages, based on 1013 ramfs. For architectures that support it, say Y here and read 1014 <file:Documentation/vm/hugetlbpage.txt> for details. 1015 1016 If unsure, say N. 1017 1018config HUGETLB_PAGE 1019 def_bool HUGETLBFS 1020 1021config CONFIGFS_FS 1022 tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)" 1023 depends on SYSFS && EXPERIMENTAL 1024 help 1025 configfs is a ram-based filesystem that provides the converse 1026 of sysfs's functionality. Where sysfs is a filesystem-based 1027 view of kernel objects, configfs is a filesystem-based manager 1028 of kernel objects, or config_items. 1029 1030 Both sysfs and configfs can and should exist together on the 1031 same system. One is not a replacement for the other. 1032 1033endmenu 1034 1035menu "Miscellaneous filesystems" 1036 1037config ADFS_FS 1038 tristate "ADFS file system support (EXPERIMENTAL)" 1039 depends on BLOCK && EXPERIMENTAL 1040 help 1041 The Acorn Disc Filing System is the standard file system of the 1042 RiscOS operating system which runs on Acorn's ARM-based Risc PC 1043 systems and the Acorn Archimedes range of machines. If you say Y 1044 here, Linux will be able to read from ADFS partitions on hard drives 1045 and from ADFS-formatted floppy discs. If you also want to be able to 1046 write to those devices, say Y to "ADFS write support" below. 1047 1048 The ADFS partition should be the first partition (i.e., 1049 /dev/[hs]d?1) on each of your drives. Please read the file 1050 <file:Documentation/filesystems/adfs.txt> for further details. 1051 1052 To compile this code as a module, choose M here: the module will be 1053 called adfs. 1054 1055 If unsure, say N. 1056 1057config ADFS_FS_RW 1058 bool "ADFS write support (DANGEROUS)" 1059 depends on ADFS_FS 1060 help 1061 If you say Y here, you will be able to write to ADFS partitions on 1062 hard drives and ADFS-formatted floppy disks. This is experimental 1063 codes, so if you're unsure, say N. 1064 1065config AFFS_FS 1066 tristate "Amiga FFS file system support (EXPERIMENTAL)" 1067 depends on BLOCK && EXPERIMENTAL 1068 help 1069 The Fast File System (FFS) is the common file system used on hard 1070 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 1071 if you want to be able to read and write files from and to an Amiga 1072 FFS partition on your hard drive. Amiga floppies however cannot be 1073 read with this driver due to an incompatibility of the floppy 1074 controller used in an Amiga and the standard floppy controller in 1075 PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 1076 and <file:fs/affs/Changes>. 1077 1078 With this driver you can also mount disk files used by Bernd 1079 Schmidt's Un*X Amiga Emulator 1080 (<http://www.freiburg.linux.de/~uae/>). 1081 If you want to do this, you will also need to say Y or M to "Loop 1082 device support", above. 1083 1084 To compile this file system support as a module, choose M here: the 1085 module will be called affs. If unsure, say N. 1086 1087config ECRYPT_FS 1088 tristate "eCrypt filesystem layer support (EXPERIMENTAL)" 1089 depends on EXPERIMENTAL && KEYS && CRYPTO && NET 1090 help 1091 Encrypted filesystem that operates on the VFS layer. See 1092 <file:Documentation/filesystems/ecryptfs.txt> to learn more about 1093 eCryptfs. Userspace components are required and can be 1094 obtained from <http://ecryptfs.sf.net>. 1095 1096 To compile this file system support as a module, choose M here: the 1097 module will be called ecryptfs. 1098 1099config HFS_FS 1100 tristate "Apple Macintosh file system support (EXPERIMENTAL)" 1101 depends on BLOCK && EXPERIMENTAL 1102 select NLS 1103 help 1104 If you say Y here, you will be able to mount Macintosh-formatted 1105 floppy disks and hard drive partitions with full read-write access. 1106 Please read <file:fs/hfs/HFS.txt> to learn about the available mount 1107 options. 1108 1109 To compile this file system support as a module, choose M here: the 1110 module will be called hfs. 1111 1112config HFSPLUS_FS 1113 tristate "Apple Extended HFS file system support" 1114 depends on BLOCK 1115 select NLS 1116 select NLS_UTF8 1117 help 1118 If you say Y here, you will be able to mount extended format 1119 Macintosh-formatted hard drive partitions with full read-write access. 1120 1121 This file system is often called HFS+ and was introduced with 1122 MacOS 8. It includes all Mac specific filesystem data such as 1123 data forks and creator codes, but it also has several UNIX 1124 style features such as file ownership and permissions. 1125 1126config BEFS_FS 1127 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 1128 depends on BLOCK && EXPERIMENTAL 1129 select NLS 1130 help 1131 The BeOS File System (BeFS) is the native file system of Be, Inc's 1132 BeOS. Notable features include support for arbitrary attributes 1133 on files and directories, and database-like indices on selected 1134 attributes. (Also note that this driver doesn't make those features 1135 available at this time). It is a 64 bit filesystem, so it supports 1136 extremely large volumes and files. 1137 1138 If you use this filesystem, you should also say Y to at least one 1139 of the NLS (native language support) options below. 1140 1141 If you don't know what this is about, say N. 1142 1143 To compile this as a module, choose M here: the module will be 1144 called befs. 1145 1146config BEFS_DEBUG 1147 bool "Debug BeFS" 1148 depends on BEFS_FS 1149 help 1150 If you say Y here, you can use the 'debug' mount option to enable 1151 debugging output from the driver. 1152 1153config BFS_FS 1154 tristate "BFS file system support (EXPERIMENTAL)" 1155 depends on BLOCK && EXPERIMENTAL 1156 help 1157 Boot File System (BFS) is a file system used under SCO UnixWare to 1158 allow the bootloader access to the kernel image and other important 1159 files during the boot process. It is usually mounted under /stand 1160 and corresponds to the slice marked as "STAND" in the UnixWare 1161 partition. You should say Y if you want to read or write the files 1162 on your /stand slice from within Linux. You then also need to say Y 1163 to "UnixWare slices support", below. More information about the BFS 1164 file system is contained in the file 1165 <file:Documentation/filesystems/bfs.txt>. 1166 1167 If you don't know what this is about, say N. 1168 1169 To compile this as a module, choose M here: the module will be called 1170 bfs. Note that the file system of your root partition (the one 1171 containing the directory /) cannot be compiled as a module. 1172 1173 1174 1175config EFS_FS 1176 tristate "EFS file system support (read only) (EXPERIMENTAL)" 1177 depends on BLOCK && EXPERIMENTAL 1178 help 1179 EFS is an older file system used for non-ISO9660 CD-ROMs and hard 1180 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 1181 uses the XFS file system for hard disk partitions however). 1182 1183 This implementation only offers read-only access. If you don't know 1184 what all this is about, it's safe to say N. For more information 1185 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 1186 1187 To compile the EFS file system support as a module, choose M here: the 1188 module will be called efs. 1189 1190config JFFS2_FS 1191 tristate "Journalling Flash File System v2 (JFFS2) support" 1192 select CRC32 1193 depends on MTD 1194 help 1195 JFFS2 is the second generation of the Journalling Flash File System 1196 for use on diskless embedded devices. It provides improved wear 1197 levelling, compression and support for hard links. You cannot use 1198 this on normal block devices, only on 'MTD' devices. 1199 1200 Further information on the design and implementation of JFFS2 is 1201 available at <http://sources.redhat.com/jffs2/>. 1202 1203config JFFS2_FS_DEBUG 1204 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 1205 depends on JFFS2_FS 1206 default "0" 1207 help 1208 This controls the amount of debugging messages produced by the JFFS2 1209 code. Set it to zero for use in production systems. For evaluation, 1210 testing and debugging, it's advisable to set it to one. This will 1211 enable a few assertions and will print debugging messages at the 1212 KERN_DEBUG loglevel, where they won't normally be visible. Level 2 1213 is unlikely to be useful - it enables extra debugging in certain 1214 areas which at one point needed debugging, but when the bugs were 1215 located and fixed, the detailed messages were relegated to level 2. 1216 1217 If reporting bugs, please try to have available a full dump of the 1218 messages at debug level 1 while the misbehaviour was occurring. 1219 1220config JFFS2_FS_WRITEBUFFER 1221 bool "JFFS2 write-buffering support" 1222 depends on JFFS2_FS 1223 default y 1224 help 1225 This enables the write-buffering support in JFFS2. 1226 1227 This functionality is required to support JFFS2 on the following 1228 types of flash devices: 1229 - NAND flash 1230 - NOR flash with transparent ECC 1231 - DataFlash 1232 1233config JFFS2_FS_WBUF_VERIFY 1234 bool "Verify JFFS2 write-buffer reads" 1235 depends on JFFS2_FS_WRITEBUFFER 1236 default n 1237 help 1238 This causes JFFS2 to read back every page written through the 1239 write-buffer, and check for errors. 1240 1241config JFFS2_SUMMARY 1242 bool "JFFS2 summary support (EXPERIMENTAL)" 1243 depends on JFFS2_FS && EXPERIMENTAL 1244 default n 1245 help 1246 This feature makes it possible to use summary information 1247 for faster filesystem mount. 1248 1249 The summary information can be inserted into a filesystem image 1250 by the utility 'sumtool'. 1251 1252 If unsure, say 'N'. 1253 1254config JFFS2_FS_XATTR 1255 bool "JFFS2 XATTR support (EXPERIMENTAL)" 1256 depends on JFFS2_FS && EXPERIMENTAL 1257 default n 1258 help 1259 Extended attributes are name:value pairs associated with inodes by 1260 the kernel or by users (see the attr(5) manual page, or visit 1261 <http://acl.bestbits.at/> for details). 1262 1263 If unsure, say N. 1264 1265config JFFS2_FS_POSIX_ACL 1266 bool "JFFS2 POSIX Access Control Lists" 1267 depends on JFFS2_FS_XATTR 1268 default y 1269 select FS_POSIX_ACL 1270 help 1271 Posix Access Control Lists (ACLs) support permissions for users and 1272 groups beyond the owner/group/world scheme. 1273 1274 To learn more about Access Control Lists, visit the Posix ACLs for 1275 Linux website <http://acl.bestbits.at/>. 1276 1277 If you don't know what Access Control Lists are, say N 1278 1279config JFFS2_FS_SECURITY 1280 bool "JFFS2 Security Labels" 1281 depends on JFFS2_FS_XATTR 1282 default y 1283 help 1284 Security labels support alternative access control models 1285 implemented by security modules like SELinux. This option 1286 enables an extended attribute handler for file security 1287 labels in the jffs2 filesystem. 1288 1289 If you are not using a security module that requires using 1290 extended attributes for file security labels, say N. 1291 1292config JFFS2_COMPRESSION_OPTIONS 1293 bool "Advanced compression options for JFFS2" 1294 depends on JFFS2_FS 1295 default n 1296 help 1297 Enabling this option allows you to explicitly choose which 1298 compression modules, if any, are enabled in JFFS2. Removing 1299 compressors and mean you cannot read existing file systems, 1300 and enabling experimental compressors can mean that you 1301 write a file system which cannot be read by a standard kernel. 1302 1303 If unsure, you should _definitely_ say 'N'. 1304 1305config JFFS2_ZLIB 1306 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 1307 select ZLIB_INFLATE 1308 select ZLIB_DEFLATE 1309 depends on JFFS2_FS 1310 default y 1311 help 1312 Zlib is designed to be a free, general-purpose, legally unencumbered, 1313 lossless data-compression library for use on virtually any computer 1314 hardware and operating system. See <http://www.gzip.org/zlib/> for 1315 further information. 1316 1317 Say 'Y' if unsure. 1318 1319config JFFS2_LZO 1320 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS 1321 select LZO_COMPRESS 1322 select LZO_DECOMPRESS 1323 depends on JFFS2_FS 1324 default n 1325 help 1326 minilzo-based compression. Generally works better than Zlib. 1327 1328 This feature was added in July, 2007. Say 'N' if you need 1329 compatibility with older bootloaders or kernels. 1330 1331config JFFS2_RTIME 1332 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 1333 depends on JFFS2_FS 1334 default y 1335 help 1336 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 1337 1338config JFFS2_RUBIN 1339 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 1340 depends on JFFS2_FS 1341 default n 1342 help 1343 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 1344 1345choice 1346 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 1347 default JFFS2_CMODE_PRIORITY 1348 depends on JFFS2_FS 1349 help 1350 You can set here the default compression mode of JFFS2 from 1351 the available compression modes. Don't touch if unsure. 1352 1353config JFFS2_CMODE_NONE 1354 bool "no compression" 1355 help 1356 Uses no compression. 1357 1358config JFFS2_CMODE_PRIORITY 1359 bool "priority" 1360 help 1361 Tries the compressors in a predefined order and chooses the first 1362 successful one. 1363 1364config JFFS2_CMODE_SIZE 1365 bool "size (EXPERIMENTAL)" 1366 help 1367 Tries all compressors and chooses the one which has the smallest 1368 result. 1369 1370config JFFS2_CMODE_FAVOURLZO 1371 bool "Favour LZO" 1372 help 1373 Tries all compressors and chooses the one which has the smallest 1374 result but gives some preference to LZO (which has faster 1375 decompression) at the expense of size. 1376 1377endchoice 1378 1379config CRAMFS 1380 tristate "Compressed ROM file system support (cramfs)" 1381 depends on BLOCK 1382 select ZLIB_INFLATE 1383 help 1384 Saying Y here includes support for CramFs (Compressed ROM File 1385 System). CramFs is designed to be a simple, small, and compressed 1386 file system for ROM based embedded systems. CramFs is read-only, 1387 limited to 256MB file systems (with 16MB files), and doesn't support 1388 16/32 bits uid/gid, hard links and timestamps. 1389 1390 See <file:Documentation/filesystems/cramfs.txt> and 1391 <file:fs/cramfs/README> for further information. 1392 1393 To compile this as a module, choose M here: the module will be called 1394 cramfs. Note that the root file system (the one containing the 1395 directory /) cannot be compiled as a module. 1396 1397 If unsure, say N. 1398 1399config VXFS_FS 1400 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 1401 depends on BLOCK 1402 help 1403 FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 1404 file system format. VERITAS VxFS(TM) is the standard file system 1405 of SCO UnixWare (and possibly others) and optionally available 1406 for Sunsoft Solaris, HP-UX and many other operating systems. 1407 Currently only readonly access is supported. 1408 1409 NOTE: the file system type as used by mount(1), mount(2) and 1410 fstab(5) is 'vxfs' as it describes the file system format, not 1411 the actual driver. 1412 1413 To compile this as a module, choose M here: the module will be 1414 called freevxfs. If unsure, say N. 1415 1416 1417config HPFS_FS 1418 tristate "OS/2 HPFS file system support" 1419 depends on BLOCK 1420 help 1421 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1422 is the file system used for organizing files on OS/2 hard disk 1423 partitions. Say Y if you want to be able to read files from and 1424 write files to an OS/2 HPFS partition on your hard drive. OS/2 1425 floppies however are in regular MSDOS format, so you don't need this 1426 option in order to be able to read them. Read 1427 <file:Documentation/filesystems/hpfs.txt>. 1428 1429 To compile this file system support as a module, choose M here: the 1430 module will be called hpfs. If unsure, say N. 1431 1432 1433 1434config QNX4FS_FS 1435 tristate "QNX4 file system support (read only)" 1436 depends on BLOCK 1437 help 1438 This is the file system used by the real-time operating systems 1439 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1440 Further information is available at <http://www.qnx.com/>. 1441 Say Y if you intend to mount QNX hard disks or floppies. 1442 Unless you say Y to "QNX4FS read-write support" below, you will 1443 only be able to read these file systems. 1444 1445 To compile this file system support as a module, choose M here: the 1446 module will be called qnx4. 1447 1448 If you don't know whether you need it, then you don't need it: 1449 answer N. 1450 1451config QNX4FS_RW 1452 bool "QNX4FS write support (DANGEROUS)" 1453 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 1454 help 1455 Say Y if you want to test write support for QNX4 file systems. 1456 1457 It's currently broken, so for now: 1458 answer N. 1459 1460 1461 1462config SYSV_FS 1463 tristate "System V/Xenix/V7/Coherent file system support" 1464 depends on BLOCK 1465 help 1466 SCO, Xenix and Coherent are commercial Unix systems for Intel 1467 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1468 here would allow you to read from their floppies and hard disk 1469 partitions. 1470 1471 If you have floppies or hard disk partitions like that, it is likely 1472 that they contain binaries from those other Unix systems; in order 1473 to run these binaries, you will want to install linux-abi which is 1474 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1475 UnixWare, Dell Unix and System V programs under Linux. It is 1476 available via FTP (user: ftp) from 1477 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1478 NOTE: that will work only for binaries from Intel-based systems; 1479 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1480 1481 If you only intend to mount files from some other Unix over the 1482 network using NFS, you don't need the System V file system support 1483 (but you need NFS file system support obviously). 1484 1485 Note that this option is generally not needed for floppies, since a 1486 good portable way to transport files and directories between unixes 1487 (and even other operating systems) is given by the tar program ("man 1488 tar" or preferably "info tar"). Note also that this option has 1489 nothing whatsoever to do with the option "System V IPC". Read about 1490 the System V file system in 1491 <file:Documentation/filesystems/sysv-fs.txt>. 1492 Saying Y here will enlarge your kernel by about 27 KB. 1493 1494 To compile this as a module, choose M here: the module will be called 1495 sysv. 1496 1497 If you haven't heard about all of this before, it's safe to say N. 1498 1499 1500 1501config UFS_FS 1502 tristate "UFS file system support (read only)" 1503 depends on BLOCK 1504 help 1505 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1506 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1507 Unixes can create and mount hard disk partitions and diskettes using 1508 this file system as well. Saying Y here will allow you to read from 1509 these partitions; if you also want to write to them, say Y to the 1510 experimental "UFS file system write support", below. Please read the 1511 file <file:Documentation/filesystems/ufs.txt> for more information. 1512 1513 The recently released UFS2 variant (used in FreeBSD 5.x) is 1514 READ-ONLY supported. 1515 1516 If you only intend to mount files from some other Unix over the 1517 network using NFS, you don't need the UFS file system support (but 1518 you need NFS file system support obviously). 1519 1520 Note that this option is generally not needed for floppies, since a 1521 good portable way to transport files and directories between unixes 1522 (and even other operating systems) is given by the tar program ("man 1523 tar" or preferably "info tar"). 1524 1525 When accessing NeXTstep files, you may need to convert them from the 1526 NeXT character set to the Latin1 character set; use the program 1527 recode ("info recode") for this purpose. 1528 1529 To compile the UFS file system support as a module, choose M here: the 1530 module will be called ufs. 1531 1532 If you haven't heard about all of this before, it's safe to say N. 1533 1534config UFS_FS_WRITE 1535 bool "UFS file system write support (DANGEROUS)" 1536 depends on UFS_FS && EXPERIMENTAL 1537 help 1538 Say Y here if you want to try writing to UFS partitions. This is 1539 experimental, so you should back up your UFS partitions beforehand. 1540 1541config UFS_DEBUG 1542 bool "UFS debugging" 1543 depends on UFS_FS 1544 help 1545 If you are experiencing any problems with the UFS filesystem, say 1546 Y here. This will result in _many_ additional debugging messages to be 1547 written to the system log. 1548 1549endmenu 1550 1551menuconfig NETWORK_FILESYSTEMS 1552 bool "Network File Systems" 1553 default y 1554 depends on NET 1555 ---help--- 1556 Say Y here to get to see options for network filesystems and 1557 filesystem-related networking code, such as NFS daemon and 1558 RPCSEC security modules. 1559 This option alone does not add any kernel code. 1560 1561 If you say N, all options in this submenu will be skipped and 1562 disabled; if unsure, say Y here. 1563 1564if NETWORK_FILESYSTEMS 1565 1566config NFS_FS 1567 tristate "NFS file system support" 1568 depends on INET 1569 select LOCKD 1570 select SUNRPC 1571 select NFS_ACL_SUPPORT if NFS_V3_ACL 1572 help 1573 If you are connected to some other (usually local) Unix computer 1574 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 1575 on that computer (the NFS server) using the Network File Sharing 1576 protocol, say Y. "Mounting files" means that the client can access 1577 the files with usual UNIX commands as if they were sitting on the 1578 client's hard disk. For this to work, the server must run the 1579 programs nfsd and mountd (but does not need to have NFS file system 1580 support enabled in its kernel). NFS is explained in the Network 1581 Administrator's Guide, available from 1582 <http://www.tldp.org/docs.html#guide>, on its man page: "man 1583 nfs", and in the NFS-HOWTO. 1584 1585 A superior but less widely used alternative to NFS is provided by 1586 the Coda file system; see "Coda file system support" below. 1587 1588 If you say Y here, you should have said Y to TCP/IP networking also. 1589 This option would enlarge your kernel by about 27 KB. 1590 1591 To compile this file system support as a module, choose M here: the 1592 module will be called nfs. 1593 1594 If you are configuring a diskless machine which will mount its root 1595 file system over NFS at boot time, say Y here and to "Kernel 1596 level IP autoconfiguration" above and to "Root file system on NFS" 1597 below. You cannot compile this driver as a module in this case. 1598 There are two packages designed for booting diskless machines over 1599 the net: netboot, available from 1600 <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 1601 available from <http://ftp1.sourceforge.net/etherboot/>. 1602 1603 If you don't know what all this is about, say N. 1604 1605config NFS_V3 1606 bool "Provide NFSv3 client support" 1607 depends on NFS_FS 1608 help 1609 Say Y here if you want your NFS client to be able to speak version 1610 3 of the NFS protocol. 1611 1612 If unsure, say Y. 1613 1614config NFS_V3_ACL 1615 bool "Provide client support for the NFSv3 ACL protocol extension" 1616 depends on NFS_V3 1617 help 1618 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1619 Access Control Lists. The server should also be compiled with 1620 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1621 1622 If unsure, say N. 1623 1624config NFS_V4 1625 bool "Provide NFSv4 client support (EXPERIMENTAL)" 1626 depends on NFS_FS && EXPERIMENTAL 1627 select RPCSEC_GSS_KRB5 1628 help 1629 Say Y here if you want your NFS client to be able to speak the newer 1630 version 4 of the NFS protocol. 1631 1632 Note: Requires auxiliary userspace daemons which may be found on 1633 http://www.citi.umich.edu/projects/nfsv4/ 1634 1635 If unsure, say N. 1636 1637config NFS_DIRECTIO 1638 bool "Allow direct I/O on NFS files" 1639 depends on NFS_FS 1640 help 1641 This option enables applications to perform uncached I/O on files 1642 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 1643 is set for a file, its data is not cached in the system's page 1644 cache. Data is moved to and from user-level application buffers 1645 directly. Unlike local disk-based file systems, NFS O_DIRECT has 1646 no alignment restrictions. 1647 1648 Unless your program is designed to use O_DIRECT properly, you are 1649 much better off allowing the NFS client to manage data caching for 1650 you. Misusing O_DIRECT can cause poor server performance or network 1651 storms. This kernel build option defaults OFF to avoid exposing 1652 system administrators unwittingly to a potentially hazardous 1653 feature. 1654 1655 For more details on NFS O_DIRECT, see fs/nfs/direct.c. 1656 1657 If unsure, say N. This reduces the size of the NFS client, and 1658 causes open() to return EINVAL if a file residing in NFS is 1659 opened with the O_DIRECT flag. 1660 1661config NFSD 1662 tristate "NFS server support" 1663 depends on INET 1664 select LOCKD 1665 select SUNRPC 1666 select EXPORTFS 1667 select NFSD_V2_ACL if NFSD_V3_ACL 1668 select NFS_ACL_SUPPORT if NFSD_V2_ACL 1669 select NFSD_TCP if NFSD_V4 1670 select CRYPTO_MD5 if NFSD_V4 1671 select CRYPTO if NFSD_V4 1672 select FS_POSIX_ACL if NFSD_V4 1673 help 1674 If you want your Linux box to act as an NFS *server*, so that other 1675 computers on your local network which support NFS can access certain 1676 directories on your box transparently, you have two options: you can 1677 use the self-contained user space program nfsd, in which case you 1678 should say N here, or you can say Y and use the kernel based NFS 1679 server. The advantage of the kernel based solution is that it is 1680 faster. 1681 1682 In either case, you will need support software; the respective 1683 locations are given in the file <file:Documentation/Changes> in the 1684 NFS section. 1685 1686 If you say Y here, you will get support for version 2 of the NFS 1687 protocol (NFSv2). If you also want NFSv3, say Y to the next question 1688 as well. 1689 1690 Please read the NFS-HOWTO, available from 1691 <http://www.tldp.org/docs.html#howto>. 1692 1693 To compile the NFS server support as a module, choose M here: the 1694 module will be called nfsd. If unsure, say N. 1695 1696config NFSD_V2_ACL 1697 bool 1698 depends on NFSD 1699 1700config NFSD_V3 1701 bool "Provide NFSv3 server support" 1702 depends on NFSD 1703 help 1704 If you would like to include the NFSv3 server as well as the NFSv2 1705 server, say Y here. If unsure, say Y. 1706 1707config NFSD_V3_ACL 1708 bool "Provide server support for the NFSv3 ACL protocol extension" 1709 depends on NFSD_V3 1710 help 1711 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1712 Access Control Lists on exported file systems. NFS clients should 1713 be compiled with the NFSv3 ACL protocol extension; see the 1714 CONFIG_NFS_V3_ACL option. If unsure, say N. 1715 1716config NFSD_V4 1717 bool "Provide NFSv4 server support (EXPERIMENTAL)" 1718 depends on NFSD && NFSD_V3 && EXPERIMENTAL 1719 select RPCSEC_GSS_KRB5 1720 help 1721 If you would like to include the NFSv4 server as well as the NFSv2 1722 and NFSv3 servers, say Y here. This feature is experimental, and 1723 should only be used if you are interested in helping to test NFSv4. 1724 If unsure, say N. 1725 1726config NFSD_TCP 1727 bool "Provide NFS server over TCP support" 1728 depends on NFSD 1729 default y 1730 help 1731 If you want your NFS server to support TCP connections, say Y here. 1732 TCP connections usually perform better than the default UDP when 1733 the network is lossy or congested. If unsure, say Y. 1734 1735config ROOT_NFS 1736 bool "Root file system on NFS" 1737 depends on NFS_FS=y && IP_PNP 1738 help 1739 If you want your Linux box to mount its whole root file system (the 1740 one containing the directory /) from some other computer over the 1741 net via NFS (presumably because your box doesn't have a hard disk), 1742 say Y. Read <file:Documentation/nfsroot.txt> for details. It is 1743 likely that in this case, you also want to say Y to "Kernel level IP 1744 autoconfiguration" so that your box can discover its network address 1745 at boot time. 1746 1747 Most people say N here. 1748 1749config LOCKD 1750 tristate 1751 1752config LOCKD_V4 1753 bool 1754 depends on NFSD_V3 || NFS_V3 1755 default y 1756 1757config EXPORTFS 1758 tristate 1759 1760config NFS_ACL_SUPPORT 1761 tristate 1762 select FS_POSIX_ACL 1763 1764config NFS_COMMON 1765 bool 1766 depends on NFSD || NFS_FS 1767 default y 1768 1769config SUNRPC 1770 tristate 1771 1772config SUNRPC_GSS 1773 tristate 1774 1775config SUNRPC_XPRT_RDMA 1776 tristate "RDMA transport for sunrpc (EXPERIMENTAL)" 1777 depends on SUNRPC && INFINIBAND && EXPERIMENTAL 1778 default m 1779 help 1780 Adds a client RPC transport for supporting kernel NFS over RDMA 1781 mounts, including Infiniband and iWARP. Experimental. 1782 1783config SUNRPC_BIND34 1784 bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" 1785 depends on SUNRPC && EXPERIMENTAL 1786 help 1787 Provides kernel support for querying rpcbind servers via versions 3 1788 and 4 of the rpcbind protocol. The kernel automatically falls back 1789 to version 2 if a remote rpcbind service does not support versions 1790 3 or 4. 1791 1792 If unsure, say N to get traditional behavior (version 2 rpcbind 1793 requests only). 1794 1795config RPCSEC_GSS_KRB5 1796 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1797 depends on SUNRPC && EXPERIMENTAL 1798 select SUNRPC_GSS 1799 select CRYPTO 1800 select CRYPTO_MD5 1801 select CRYPTO_DES 1802 select CRYPTO_CBC 1803 help 1804 Provides for secure RPC calls by means of a gss-api 1805 mechanism based on Kerberos V5. This is required for 1806 NFSv4. 1807 1808 Note: Requires an auxiliary userspace daemon which may be found on 1809 http://www.citi.umich.edu/projects/nfsv4/ 1810 1811 If unsure, say N. 1812 1813config RPCSEC_GSS_SPKM3 1814 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 1815 depends on SUNRPC && EXPERIMENTAL 1816 select SUNRPC_GSS 1817 select CRYPTO 1818 select CRYPTO_MD5 1819 select CRYPTO_DES 1820 select CRYPTO_CAST5 1821 select CRYPTO_CBC 1822 help 1823 Provides for secure RPC calls by means of a gss-api 1824 mechanism based on the SPKM3 public-key mechanism. 1825 1826 Note: Requires an auxiliary userspace daemon which may be found on 1827 http://www.citi.umich.edu/projects/nfsv4/ 1828 1829 If unsure, say N. 1830 1831config SMB_FS 1832 tristate "SMB file system support (to mount Windows shares etc.)" 1833 depends on INET 1834 select NLS 1835 help 1836 SMB (Server Message Block) is the protocol Windows for Workgroups 1837 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1838 files and printers over local networks. Saying Y here allows you to 1839 mount their file systems (often called "shares" in this context) and 1840 access them just like any other Unix directory. Currently, this 1841 works only if the Windows machines use TCP/IP as the underlying 1842 transport protocol, and not NetBEUI. For details, read 1843 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1844 available from <http://www.tldp.org/docs.html#howto>. 1845 1846 Note: if you just want your box to act as an SMB *server* and make 1847 files and printing services available to Windows clients (which need 1848 to have a TCP/IP stack), you don't need to say Y here; you can use 1849 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1850 for that. 1851 1852 General information about how to connect Linux, Windows machines and 1853 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1854 1855 To compile the SMB support as a module, choose M here: the module will 1856 be called smbfs. Most people say N, however. 1857 1858config SMB_NLS_DEFAULT 1859 bool "Use a default NLS" 1860 depends on SMB_FS 1861 help 1862 Enabling this will make smbfs use nls translations by default. You 1863 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1864 settings and you need to give the default nls for the SMB server as 1865 CONFIG_SMB_NLS_REMOTE. 1866 1867 The nls settings can be changed at mount time, if your smbmount 1868 supports that, using the codepage and iocharset parameters. 1869 1870 smbmount from samba 2.2.0 or later supports this. 1871 1872config SMB_NLS_REMOTE 1873 string "Default Remote NLS Option" 1874 depends on SMB_NLS_DEFAULT 1875 default "cp437" 1876 help 1877 This setting allows you to specify a default value for which 1878 codepage the server uses. If this field is left blank no 1879 translations will be done by default. The local codepage/charset 1880 default to CONFIG_NLS_DEFAULT. 1881 1882 The nls settings can be changed at mount time, if your smbmount 1883 supports that, using the codepage and iocharset parameters. 1884 1885 smbmount from samba 2.2.0 or later supports this. 1886 1887config CIFS 1888 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 1889 depends on INET 1890 select NLS 1891 help 1892 This is the client VFS module for the Common Internet File System 1893 (CIFS) protocol which is the successor to the Server Message Block 1894 (SMB) protocol, the native file sharing mechanism for most early 1895 PC operating systems. The CIFS protocol is fully supported by 1896 file servers such as Windows 2000 (including Windows 2003, NT 4 1897 and Windows XP) as well by Samba (which provides excellent CIFS 1898 server support for Linux and many other operating systems). Limited 1899 support for OS/2 and Windows ME and similar servers is provided as well. 1900 1901 The intent of the cifs module is to provide an advanced 1902 network file system client for mounting to CIFS compliant servers, 1903 including support for dfs (hierarchical name space), secure per-user 1904 session establishment, safe distributed caching (oplock), optional 1905 packet signing, Unicode and other internationalization improvements. 1906 If you need to mount to Samba or Windows from this machine, say Y. 1907 1908config CIFS_STATS 1909 bool "CIFS statistics" 1910 depends on CIFS 1911 help 1912 Enabling this option will cause statistics for each server share 1913 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 1914 1915config CIFS_STATS2 1916 bool "Extended statistics" 1917 depends on CIFS_STATS 1918 help 1919 Enabling this option will allow more detailed statistics on SMB 1920 request timing to be displayed in /proc/fs/cifs/DebugData and also 1921 allow optional logging of slow responses to dmesg (depending on the 1922 value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1923 These additional statistics may have a minor effect on performance 1924 and memory utilization. 1925 1926 Unless you are a developer or are doing network performance analysis 1927 or tuning, say N. 1928 1929config CIFS_WEAK_PW_HASH 1930 bool "Support legacy servers which use weaker LANMAN security" 1931 depends on CIFS 1932 help 1933 Modern CIFS servers including Samba and most Windows versions 1934 (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 1935 security mechanisms. These hash the password more securely 1936 than the mechanisms used in the older LANMAN version of the 1937 SMB protocol needed to establish sessions with old SMB servers. 1938 1939 Enabling this option allows the cifs module to mount to older 1940 LANMAN based servers such as OS/2 and Windows 95, but such 1941 mounts may be less secure than mounts using NTLM or more recent 1942 security mechanisms if you are on a public network. Unless you 1943 have a need to access old SMB servers (and are on a private 1944 network) you probably want to say N. Even if this support 1945 is enabled in the kernel build, they will not be used 1946 automatically. At runtime LANMAN mounts are disabled but 1947 can be set to required (or optional) either in 1948 /proc/fs/cifs (see fs/cifs/README for more detail) or via an 1949 option on the mount command. This support is disabled by 1950 default in order to reduce the possibility of a downgrade 1951 attack. 1952 1953 If unsure, say N. 1954 1955config CIFS_XATTR 1956 bool "CIFS extended attributes" 1957 depends on CIFS 1958 help 1959 Extended attributes are name:value pairs associated with inodes by 1960 the kernel or by users (see the attr(5) manual page, or visit 1961 <http://acl.bestbits.at/> for details). CIFS maps the name of 1962 extended attributes beginning with the user namespace prefix 1963 to SMB/CIFS EAs. EAs are stored on Windows servers without the 1964 user namespace prefix, but their names are seen by Linux cifs clients 1965 prefaced by the user namespace prefix. The system namespace 1966 (used by some filesystems to store ACLs) is not supported at 1967 this time. 1968 1969 If unsure, say N. 1970 1971config CIFS_POSIX 1972 bool "CIFS POSIX Extensions" 1973 depends on CIFS_XATTR 1974 help 1975 Enabling this option will cause the cifs client to attempt to 1976 negotiate a newer dialect with servers, such as Samba 3.0.5 1977 or later, that optionally can handle more POSIX like (rather 1978 than Windows like) file behavior. It also enables 1979 support for POSIX ACLs (getfacl and setfacl) to servers 1980 (such as Samba 3.10 and later) which can negotiate 1981 CIFS POSIX ACL support. If unsure, say N. 1982 1983config CIFS_DEBUG2 1984 bool "Enable additional CIFS debugging routines" 1985 depends on CIFS 1986 help 1987 Enabling this option adds a few more debugging routines 1988 to the cifs code which slightly increases the size of 1989 the cifs module and can cause additional logging of debug 1990 messages in some error paths, slowing performance. This 1991 option can be turned off unless you are debugging 1992 cifs problems. If unsure, say N. 1993 1994config CIFS_EXPERIMENTAL 1995 bool "CIFS Experimental Features (EXPERIMENTAL)" 1996 depends on CIFS && EXPERIMENTAL 1997 help 1998 Enables cifs features under testing. These features are 1999 experimental and currently include DFS support and directory 2000 change notification ie fcntl(F_DNOTIFY), as well as the upcall 2001 mechanism which will be used for Kerberos session negotiation 2002 and uid remapping. Some of these features also may depend on 2003 setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 2004 (which is disabled by default). See the file fs/cifs/README 2005 for more details. If unsure, say N. 2006 2007config CIFS_UPCALL 2008 bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)" 2009 depends on CIFS_EXPERIMENTAL 2010 depends on CONNECTOR 2011 help 2012 Enables an upcall mechanism for CIFS which will be used to contact 2013 userspace helper utilities to provide SPNEGO packaged Kerberos 2014 tickets which are needed to mount to certain secure servers 2015 (for which more secure Kerberos authentication is required). If 2016 unsure, say N. 2017 2018config NCP_FS 2019 tristate "NCP file system support (to mount NetWare volumes)" 2020 depends on IPX!=n || INET 2021 help 2022 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 2023 used by Novell NetWare clients to talk to file servers. It is to 2024 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 2025 to mount NetWare file server volumes and to access them just like 2026 any other Unix directory. For details, please read the file 2027 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 2028 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 2029 2030 You do not have to say Y here if you want your Linux box to act as a 2031 file *server* for Novell NetWare clients. 2032 2033 General information about how to connect Linux, Windows machines and 2034 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 2035 2036 To compile this as a module, choose M here: the module will be called 2037 ncpfs. Say N unless you are connected to a Novell network. 2038 2039source "fs/ncpfs/Kconfig" 2040 2041config CODA_FS 2042 tristate "Coda file system support (advanced network fs)" 2043 depends on INET 2044 help 2045 Coda is an advanced network file system, similar to NFS in that it 2046 enables you to mount file systems of a remote server and access them 2047 with regular Unix commands as if they were sitting on your hard 2048 disk. Coda has several advantages over NFS: support for 2049 disconnected operation (e.g. for laptops), read/write server 2050 replication, security model for authentication and encryption, 2051 persistent client caches and write back caching. 2052 2053 If you say Y here, your Linux box will be able to act as a Coda 2054 *client*. You will need user level code as well, both for the 2055 client and server. Servers are currently user level, i.e. they need 2056 no kernel support. Please read 2057 <file:Documentation/filesystems/coda.txt> and check out the Coda 2058 home page <http://www.coda.cs.cmu.edu/>. 2059 2060 To compile the coda client support as a module, choose M here: the 2061 module will be called coda. 2062 2063config CODA_FS_OLD_API 2064 bool "Use 96-bit Coda file identifiers" 2065 depends on CODA_FS 2066 help 2067 A new kernel-userspace API had to be introduced for Coda v6.0 2068 to support larger 128-bit file identifiers as needed by the 2069 new realms implementation. 2070 2071 However this new API is not backward compatible with older 2072 clients. If you really need to run the old Coda userspace 2073 cache manager then say Y. 2074 2075 For most cases you probably want to say N. 2076 2077config AFS_FS 2078 tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 2079 depends on INET && EXPERIMENTAL 2080 select AF_RXRPC 2081 help 2082 If you say Y here, you will get an experimental Andrew File System 2083 driver. It currently only supports unsecured read-only AFS access. 2084 2085 See <file:Documentation/filesystems/afs.txt> for more information. 2086 2087 If unsure, say N. 2088 2089config AFS_DEBUG 2090 bool "AFS dynamic debugging" 2091 depends on AFS_FS 2092 help 2093 Say Y here to make runtime controllable debugging messages appear. 2094 2095 See <file:Documentation/filesystems/afs.txt> for more information. 2096 2097 If unsure, say N. 2098 2099config 9P_FS 2100 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2101 depends on INET && NET_9P && EXPERIMENTAL 2102 help 2103 If you say Y here, you will get experimental support for 2104 Plan 9 resource sharing via the 9P2000 protocol. 2105 2106 See <http://v9fs.sf.net> for more information. 2107 2108 If unsure, say N. 2109 2110endif # NETWORK_FILESYSTEMS 2111 2112if BLOCK 2113menu "Partition Types" 2114 2115source "fs/partitions/Kconfig" 2116 2117endmenu 2118endif 2119 2120source "fs/nls/Kconfig" 2121source "fs/dlm/Kconfig" 2122 2123endmenu 2124 2125