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