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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 select CRC32 240 help 241 This is a generic journaling layer for block devices that support 242 both 32-bit and 64-bit block numbers. It is currently used by 243 the ext4dev/ext4 filesystem, but it could also be used to add 244 journal support to other file systems or block devices such 245 as RAID or LVM. 246 247 If you are using ext4dev/ext4, you need to say Y here. If you are not 248 using ext4dev/ext4 then you will probably want to say N. 249 250 To compile this device as a module, choose M here. The module will be 251 called jbd2. If you are compiling ext4dev/ext4 into the kernel, 252 you cannot compile this code as a module. 253 254config JBD2_DEBUG 255 bool "JBD2 (ext4dev/ext4) debugging support" 256 depends on JBD2 && DEBUG_FS 257 help 258 If you are using the ext4dev/ext4 journaled file system (or 259 potentially any other filesystem/device using JBD2), this option 260 allows you to enable debugging output while the system is running, 261 in order to help track down any problems you are having. 262 By default, the debugging output will be turned off. 263 264 If you select Y here, then you will be able to turn on debugging 265 with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a 266 number between 1 and 5. The higher the number, the more debugging 267 output is generated. To turn debugging off again, do 268 "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug". 269 270config FS_MBCACHE 271# Meta block cache for Extended Attributes (ext2/ext3/ext4) 272 tristate 273 depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR 274 default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y 275 default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m 276 277config REISERFS_FS 278 tristate "Reiserfs support" 279 help 280 Stores not just filenames but the files themselves in a balanced 281 tree. Uses journalling. 282 283 Balanced trees are more efficient than traditional file system 284 architectural foundations. 285 286 In general, ReiserFS is as fast as ext2, but is very efficient with 287 large directories and small files. Additional patches are needed 288 for NFS and quotas, please see <http://www.namesys.com/> for links. 289 290 It is more easily extended to have features currently found in 291 database and keyword search systems than block allocation based file 292 systems are. The next version will be so extended, and will support 293 plugins consistent with our motto ``It takes more than a license to 294 make source code open.'' 295 296 Read <http://www.namesys.com/> to learn more about reiserfs. 297 298 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 299 300 If you like it, you can pay us to add new features to it that you 301 need, buy a support contract, or pay us to port it to another OS. 302 303config REISERFS_CHECK 304 bool "Enable reiserfs debug mode" 305 depends on REISERFS_FS 306 help 307 If you set this to Y, then ReiserFS will perform every check it can 308 possibly imagine of its internal consistency throughout its 309 operation. It will also go substantially slower. More than once we 310 have forgotten that this was on, and then gone despondent over the 311 latest benchmarks.:-) Use of this option allows our team to go all 312 out in checking for consistency when debugging without fear of its 313 effect on end users. If you are on the verge of sending in a bug 314 report, say Y and you might get a useful error message. Almost 315 everyone should say N. 316 317config REISERFS_PROC_INFO 318 bool "Stats in /proc/fs/reiserfs" 319 depends on REISERFS_FS && PROC_FS 320 help 321 Create under /proc/fs/reiserfs a hierarchy of files, displaying 322 various ReiserFS statistics and internal data at the expense of 323 making your kernel or module slightly larger (+8 KB). This also 324 increases the amount of kernel memory required for each mount. 325 Almost everyone but ReiserFS developers and people fine-tuning 326 reiserfs or tracing problems should say N. 327 328config REISERFS_FS_XATTR 329 bool "ReiserFS extended attributes" 330 depends on REISERFS_FS 331 help 332 Extended attributes are name:value pairs associated with inodes by 333 the kernel or by users (see the attr(5) manual page, or visit 334 <http://acl.bestbits.at/> for details). 335 336 If unsure, say N. 337 338config REISERFS_FS_POSIX_ACL 339 bool "ReiserFS POSIX Access Control Lists" 340 depends on REISERFS_FS_XATTR 341 select FS_POSIX_ACL 342 help 343 Posix Access Control Lists (ACLs) support permissions for users and 344 groups beyond the owner/group/world scheme. 345 346 To learn more about Access Control Lists, visit the Posix ACLs for 347 Linux website <http://acl.bestbits.at/>. 348 349 If you don't know what Access Control Lists are, say N 350 351config REISERFS_FS_SECURITY 352 bool "ReiserFS Security Labels" 353 depends on REISERFS_FS_XATTR 354 help 355 Security labels support alternative access control models 356 implemented by security modules like SELinux. This option 357 enables an extended attribute handler for file security 358 labels in the ReiserFS filesystem. 359 360 If you are not using a security module that requires using 361 extended attributes for file security labels, say N. 362 363config JFS_FS 364 tristate "JFS filesystem support" 365 select NLS 366 help 367 This is a port of IBM's Journaled Filesystem . More information is 368 available in the file <file:Documentation/filesystems/jfs.txt>. 369 370 If you do not intend to use the JFS filesystem, say N. 371 372config JFS_POSIX_ACL 373 bool "JFS POSIX Access Control Lists" 374 depends on JFS_FS 375 select FS_POSIX_ACL 376 help 377 Posix Access Control Lists (ACLs) support permissions for users and 378 groups beyond the owner/group/world scheme. 379 380 To learn more about Access Control Lists, visit the Posix ACLs for 381 Linux website <http://acl.bestbits.at/>. 382 383 If you don't know what Access Control Lists are, say N 384 385config JFS_SECURITY 386 bool "JFS Security Labels" 387 depends on JFS_FS 388 help 389 Security labels support alternative access control models 390 implemented by security modules like SELinux. This option 391 enables an extended attribute handler for file security 392 labels in the jfs filesystem. 393 394 If you are not using a security module that requires using 395 extended attributes for file security labels, say N. 396 397config JFS_DEBUG 398 bool "JFS debugging" 399 depends on JFS_FS 400 help 401 If you are experiencing any problems with the JFS filesystem, say 402 Y here. This will result in additional debugging messages to be 403 written to the system log. Under normal circumstances, this 404 results in very little overhead. 405 406config JFS_STATISTICS 407 bool "JFS statistics" 408 depends on JFS_FS 409 help 410 Enabling this option will cause statistics from the JFS file system 411 to be made available to the user in the /proc/fs/jfs/ directory. 412 413config FS_POSIX_ACL 414# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4) 415# 416# NOTE: you can implement Posix ACLs without these helpers (XFS does). 417# Never use this symbol for ifdefs. 418# 419 bool 420 default n 421 422source "fs/xfs/Kconfig" 423source "fs/gfs2/Kconfig" 424 425config OCFS2_FS 426 tristate "OCFS2 file system support" 427 depends on NET && SYSFS 428 select CONFIGFS_FS 429 select JBD 430 select CRC32 431 help 432 OCFS2 is a general purpose extent based shared disk cluster file 433 system with many similarities to ext3. It supports 64 bit inode 434 numbers, and has automatically extending metadata groups which may 435 also make it attractive for non-clustered use. 436 437 You'll want to install the ocfs2-tools package in order to at least 438 get "mount.ocfs2". 439 440 Project web page: http://oss.oracle.com/projects/ocfs2 441 Tools web page: http://oss.oracle.com/projects/ocfs2-tools 442 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/ 443 444 For more information on OCFS2, see the file 445 <file:Documentation/filesystems/ocfs2.txt>. 446 447config OCFS2_FS_O2CB 448 tristate "O2CB Kernelspace Clustering" 449 depends on OCFS2_FS 450 default y 451 help 452 OCFS2 includes a simple kernelspace clustering package, the OCFS2 453 Cluster Base. It only requires a very small userspace component 454 to configure it. This comes with the standard ocfs2-tools package. 455 O2CB is limited to maintaining a cluster for OCFS2 file systems. 456 It cannot manage any other cluster applications. 457 458 It is always safe to say Y here, as the clustering method is 459 run-time selectable. 460 461config OCFS2_FS_USERSPACE_CLUSTER 462 tristate "OCFS2 Userspace Clustering" 463 depends on OCFS2_FS && DLM 464 default y 465 help 466 This option will allow OCFS2 to use userspace clustering services 467 in conjunction with the DLM in fs/dlm. If you are using a 468 userspace cluster manager, say Y here. 469 470 It is safe to say Y, as the clustering method is run-time 471 selectable. 472 473config OCFS2_DEBUG_MASKLOG 474 bool "OCFS2 logging support" 475 depends on OCFS2_FS 476 default y 477 help 478 The ocfs2 filesystem has an extensive logging system. The system 479 allows selection of events to log via files in /sys/o2cb/logmask/. 480 This option will enlarge your kernel, but it allows debugging of 481 ocfs2 filesystem issues. 482 483config OCFS2_DEBUG_FS 484 bool "OCFS2 expensive checks" 485 depends on OCFS2_FS 486 default n 487 help 488 This option will enable expensive consistency checks. Enable 489 this option for debugging only as it is likely to decrease 490 performance of the filesystem. 491 492endif # BLOCK 493 494config DNOTIFY 495 bool "Dnotify support" 496 default y 497 help 498 Dnotify is a directory-based per-fd file change notification system 499 that uses signals to communicate events to user-space. There exist 500 superior alternatives, but some applications may still rely on 501 dnotify. 502 503 If unsure, say Y. 504 505config INOTIFY 506 bool "Inotify file change notification support" 507 default y 508 ---help--- 509 Say Y here to enable inotify support. Inotify is a file change 510 notification system and a replacement for dnotify. Inotify fixes 511 numerous shortcomings in dnotify and introduces several new features 512 including multiple file events, one-shot support, and unmount 513 notification. 514 515 For more information, see <file:Documentation/filesystems/inotify.txt> 516 517 If unsure, say Y. 518 519config INOTIFY_USER 520 bool "Inotify support for userspace" 521 depends on INOTIFY 522 default y 523 ---help--- 524 Say Y here to enable inotify support for userspace, including the 525 associated system calls. Inotify allows monitoring of both files and 526 directories via a single open fd. Events are read from the file 527 descriptor, which is also select()- and poll()-able. 528 529 For more information, see <file:Documentation/filesystems/inotify.txt> 530 531 If unsure, say Y. 532 533config QUOTA 534 bool "Quota support" 535 help 536 If you say Y here, you will be able to set per user limits for disk 537 usage (also called disk quotas). Currently, it works for the 538 ext2, ext3, and reiserfs file system. ext3 also supports journalled 539 quotas for which you don't need to run quotacheck(8) after an unclean 540 shutdown. 541 For further details, read the Quota mini-HOWTO, available from 542 <http://www.tldp.org/docs.html#howto>, or the documentation provided 543 with the quota tools. Probably the quota support is only useful for 544 multi user systems. If unsure, say N. 545 546config QUOTA_NETLINK_INTERFACE 547 bool "Report quota messages through netlink interface" 548 depends on QUOTA && NET 549 help 550 If you say Y here, quota warnings (about exceeding softlimit, reaching 551 hardlimit, etc.) will be reported through netlink interface. If unsure, 552 say Y. 553 554config PRINT_QUOTA_WARNING 555 bool "Print quota warnings to console (OBSOLETE)" 556 depends on QUOTA 557 default y 558 help 559 If you say Y here, quota warnings (about exceeding softlimit, reaching 560 hardlimit, etc.) will be printed to the process' controlling terminal. 561 Note that this behavior is currently deprecated and may go away in 562 future. Please use notification via netlink socket instead. 563 564config QFMT_V1 565 tristate "Old quota format support" 566 depends on QUOTA 567 help 568 This quota format was (is) used by kernels earlier than 2.4.22. If 569 you have quota working and you don't want to convert to new quota 570 format say Y here. 571 572config QFMT_V2 573 tristate "Quota format v2 support" 574 depends on QUOTA 575 help 576 This quota format allows using quotas with 32-bit UIDs/GIDs. If you 577 need this functionality say Y here. 578 579config QUOTACTL 580 bool 581 depends on XFS_QUOTA || QUOTA 582 default y 583 584config AUTOFS_FS 585 tristate "Kernel automounter support" 586 help 587 The automounter is a tool to automatically mount remote file systems 588 on demand. This implementation is partially kernel-based to reduce 589 overhead in the already-mounted case; this is unlike the BSD 590 automounter (amd), which is a pure user space daemon. 591 592 To use the automounter you need the user-space tools from the autofs 593 package; you can find the location in <file:Documentation/Changes>. 594 You also want to answer Y to "NFS file system support", below. 595 596 If you want to use the newer version of the automounter with more 597 features, say N here and say Y to "Kernel automounter v4 support", 598 below. 599 600 To compile this support as a module, choose M here: the module will be 601 called autofs. 602 603 If you are not a part of a fairly large, distributed network, you 604 probably do not need an automounter, and can say N here. 605 606config AUTOFS4_FS 607 tristate "Kernel automounter version 4 support (also supports v3)" 608 help 609 The automounter is a tool to automatically mount remote file systems 610 on demand. This implementation is partially kernel-based to reduce 611 overhead in the already-mounted case; this is unlike the BSD 612 automounter (amd), which is a pure user space daemon. 613 614 To use the automounter you need the user-space tools from 615 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 616 want to answer Y to "NFS file system support", below. 617 618 To compile this support as a module, choose M here: the module will be 619 called autofs4. You will need to add "alias autofs autofs4" to your 620 modules configuration file. 621 622 If you are not a part of a fairly large, distributed network or 623 don't have a laptop which needs to dynamically reconfigure to the 624 local network, you probably do not need an automounter, and can say 625 N here. 626 627config FUSE_FS 628 tristate "Filesystem in Userspace support" 629 help 630 With FUSE it is possible to implement a fully functional filesystem 631 in a userspace program. 632 633 There's also companion library: libfuse. This library along with 634 utilities is available from the FUSE homepage: 635 <http://fuse.sourceforge.net/> 636 637 See <file:Documentation/filesystems/fuse.txt> for more information. 638 See <file:Documentation/Changes> for needed library/utility version. 639 640 If you want to develop a userspace FS, or if you want to use 641 a filesystem based on FUSE, answer Y or M. 642 643config GENERIC_ACL 644 bool 645 select FS_POSIX_ACL 646 647if BLOCK 648menu "CD-ROM/DVD Filesystems" 649 650config ISO9660_FS 651 tristate "ISO 9660 CDROM file system support" 652 help 653 This is the standard file system used on CD-ROMs. It was previously 654 known as "High Sierra File System" and is called "hsfs" on other 655 Unix systems. The so-called Rock-Ridge extensions which allow for 656 long Unix filenames and symbolic links are also supported by this 657 driver. If you have a CD-ROM drive and want to do more with it than 658 just listen to audio CDs and watch its LEDs, say Y (and read 659 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 660 available from <http://www.tldp.org/docs.html#howto>), thereby 661 enlarging your kernel by about 27 KB; otherwise say N. 662 663 To compile this file system support as a module, choose M here: the 664 module will be called isofs. 665 666config JOLIET 667 bool "Microsoft Joliet CDROM extensions" 668 depends on ISO9660_FS 669 select NLS 670 help 671 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 672 which allows for long filenames in unicode format (unicode is the 673 new 16 bit character code, successor to ASCII, which encodes the 674 characters of almost all languages of the world; see 675 <http://www.unicode.org/> for more information). Say Y here if you 676 want to be able to read Joliet CD-ROMs under Linux. 677 678config ZISOFS 679 bool "Transparent decompression extension" 680 depends on ISO9660_FS 681 select ZLIB_INFLATE 682 help 683 This is a Linux-specific extension to RockRidge which lets you store 684 data in compressed form on a CD-ROM and have it transparently 685 decompressed when the CD-ROM is accessed. See 686 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 687 necessary to create such a filesystem. Say Y here if you want to be 688 able to read such compressed CD-ROMs. 689 690config UDF_FS 691 tristate "UDF file system support" 692 select CRC_ITU_T 693 help 694 This is the new file system used on some CD-ROMs and DVDs. Say Y if 695 you intend to mount DVD discs or CDRW's written in packet mode, or 696 if written to by other UDF utilities, such as DirectCD. 697 Please read <file:Documentation/filesystems/udf.txt>. 698 699 To compile this file system support as a module, choose M here: the 700 module will be called udf. 701 702 If unsure, say N. 703 704config UDF_NLS 705 bool 706 default y 707 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 708 709endmenu 710endif # BLOCK 711 712if BLOCK 713menu "DOS/FAT/NT Filesystems" 714 715config FAT_FS 716 tristate 717 select NLS 718 help 719 If you want to use one of the FAT-based file systems (the MS-DOS and 720 VFAT (Windows 95) file systems), then you must say Y or M here 721 to include FAT support. You will then be able to mount partitions or 722 diskettes with FAT-based file systems and transparently access the 723 files on them, i.e. MSDOS files will look and behave just like all 724 other Unix files. 725 726 This FAT support is not a file system in itself, it only provides 727 the foundation for the other file systems. You will have to say Y or 728 M to at least one of "MSDOS fs support" or "VFAT fs support" in 729 order to make use of it. 730 731 Another way to read and write MSDOS floppies and hard drive 732 partitions from within Linux (but not transparently) is with the 733 mtools ("man mtools") program suite. You don't need to say Y here in 734 order to do that. 735 736 If you need to move large files on floppies between a DOS and a 737 Linux box, say Y here, mount the floppy under Linux with an MSDOS 738 file system and use GNU tar's M option. GNU tar is a program 739 available for Unix and DOS ("man tar" or "info tar"). 740 741 The FAT support will enlarge your kernel by about 37 KB. If unsure, 742 say Y. 743 744 To compile this as a module, choose M here: the module will be called 745 fat. Note that if you compile the FAT support as a module, you 746 cannot compile any of the FAT-based file systems into the kernel 747 -- they will have to be modules as well. 748 749config MSDOS_FS 750 tristate "MSDOS fs support" 751 select FAT_FS 752 help 753 This allows you to mount MSDOS partitions of your hard drive (unless 754 they are compressed; to access compressed MSDOS partitions under 755 Linux, you can either use the DOS emulator DOSEMU, described in the 756 DOSEMU-HOWTO, available from 757 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 758 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 759 intend to use dosemu with a non-compressed MSDOS partition, say Y 760 here) and MSDOS floppies. This means that file access becomes 761 transparent, i.e. the MSDOS files look and behave just like all 762 other Unix files. 763 764 If you have Windows 95 or Windows NT installed on your MSDOS 765 partitions, you should use the VFAT file system (say Y to "VFAT fs 766 support" below), or you will not be able to see the long filenames 767 generated by Windows 95 / Windows NT. 768 769 This option will enlarge your kernel by about 7 KB. If unsure, 770 answer Y. This will only work if you said Y to "DOS FAT fs support" 771 as well. To compile this as a module, choose M here: the module will 772 be called msdos. 773 774config VFAT_FS 775 tristate "VFAT (Windows-95) fs support" 776 select FAT_FS 777 help 778 This option provides support for normal Windows file systems with 779 long filenames. That includes non-compressed FAT-based file systems 780 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 781 programs from the mtools package. 782 783 The VFAT support enlarges your kernel by about 10 KB and it only 784 works if you said Y to the "DOS FAT fs support" above. Please read 785 the file <file:Documentation/filesystems/vfat.txt> for details. If 786 unsure, say Y. 787 788 To compile this as a module, choose M here: the module will be called 789 vfat. 790 791config FAT_DEFAULT_CODEPAGE 792 int "Default codepage for FAT" 793 depends on MSDOS_FS || VFAT_FS 794 default 437 795 help 796 This option should be set to the codepage of your FAT filesystems. 797 It can be overridden with the "codepage" mount option. 798 See <file:Documentation/filesystems/vfat.txt> for more information. 799 800config FAT_DEFAULT_IOCHARSET 801 string "Default iocharset for FAT" 802 depends on VFAT_FS 803 default "iso8859-1" 804 help 805 Set this to the default input/output character set you'd 806 like FAT to use. It should probably match the character set 807 that most of your FAT filesystems use, and can be overridden 808 with the "iocharset" mount option for FAT filesystems. 809 Note that "utf8" is not recommended for FAT filesystems. 810 If unsure, you shouldn't set "utf8" here. 811 See <file:Documentation/filesystems/vfat.txt> for more information. 812 813config NTFS_FS 814 tristate "NTFS file system support" 815 select NLS 816 help 817 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 818 819 Saying Y or M here enables read support. There is partial, but 820 safe, write support available. For write support you must also 821 say Y to "NTFS write support" below. 822 823 There are also a number of user-space tools available, called 824 ntfsprogs. These include ntfsundelete and ntfsresize, that work 825 without NTFS support enabled in the kernel. 826 827 This is a rewrite from scratch of Linux NTFS support and replaced 828 the old NTFS code starting with Linux 2.5.11. A backport to 829 the Linux 2.4 kernel series is separately available as a patch 830 from the project web site. 831 832 For more information see <file:Documentation/filesystems/ntfs.txt> 833 and <http://linux-ntfs.sourceforge.net/>. 834 835 To compile this file system support as a module, choose M here: the 836 module will be called ntfs. 837 838 If you are not using Windows NT, 2000, XP or 2003 in addition to 839 Linux on your computer it is safe to say N. 840 841config NTFS_DEBUG 842 bool "NTFS debugging support" 843 depends on NTFS_FS 844 help 845 If you are experiencing any problems with the NTFS file system, say 846 Y here. This will result in additional consistency checks to be 847 performed by the driver as well as additional debugging messages to 848 be written to the system log. Note that debugging messages are 849 disabled by default. To enable them, supply the option debug_msgs=1 850 at the kernel command line when booting the kernel or as an option 851 to insmod when loading the ntfs module. Once the driver is active, 852 you can enable debugging messages by doing (as root): 853 echo 1 > /proc/sys/fs/ntfs-debug 854 Replacing the "1" with "0" would disable debug messages. 855 856 If you leave debugging messages disabled, this results in little 857 overhead, but enabling debug messages results in very significant 858 slowdown of the system. 859 860 When reporting bugs, please try to have available a full dump of 861 debugging messages while the misbehaviour was occurring. 862 863config NTFS_RW 864 bool "NTFS write support" 865 depends on NTFS_FS 866 help 867 This enables the partial, but safe, write support in the NTFS driver. 868 869 The only supported operation is overwriting existing files, without 870 changing the file length. No file or directory creation, deletion or 871 renaming is possible. Note only non-resident files can be written to 872 so you may find that some very small files (<500 bytes or so) cannot 873 be written to. 874 875 While we cannot guarantee that it will not damage any data, we have 876 so far not received a single report where the driver would have 877 damaged someones data so we assume it is perfectly safe to use. 878 879 Note: While write support is safe in this version (a rewrite from 880 scratch of the NTFS support), it should be noted that the old NTFS 881 write support, included in Linux 2.5.10 and before (since 1997), 882 is not safe. 883 884 This is currently useful with TopologiLinux. TopologiLinux is run 885 on top of any DOS/Microsoft Windows system without partitioning your 886 hard disk. Unlike other Linux distributions TopologiLinux does not 887 need its own partition. For more information see 888 <http://topologi-linux.sourceforge.net/> 889 890 It is perfectly safe to say N here. 891 892endmenu 893endif # BLOCK 894 895menu "Pseudo filesystems" 896 897config PROC_FS 898 bool "/proc file system support" if EMBEDDED 899 default y 900 help 901 This is a virtual file system providing information about the status 902 of the system. "Virtual" means that it doesn't take up any space on 903 your hard disk: the files are created on the fly by the kernel when 904 you try to access them. Also, you cannot read the files with older 905 version of the program less: you need to use more or cat. 906 907 It's totally cool; for example, "cat /proc/interrupts" gives 908 information about what the different IRQs are used for at the moment 909 (there is a small number of Interrupt ReQuest lines in your computer 910 that are used by the attached devices to gain the CPU's attention -- 911 often a source of trouble if two devices are mistakenly configured 912 to use the same IRQ). The program procinfo to display some 913 information about your system gathered from the /proc file system. 914 915 Before you can use the /proc file system, it has to be mounted, 916 meaning it has to be given a location in the directory hierarchy. 917 That location should be /proc. A command such as "mount -t proc proc 918 /proc" or the equivalent line in /etc/fstab does the job. 919 920 The /proc file system is explained in the file 921 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 922 ("man 5 proc"). 923 924 This option will enlarge your kernel by about 67 KB. Several 925 programs depend on this, so everyone should say Y here. 926 927config PROC_KCORE 928 bool "/proc/kcore support" if !ARM 929 depends on PROC_FS && MMU 930 931config PROC_VMCORE 932 bool "/proc/vmcore support (EXPERIMENTAL)" 933 depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP 934 default y 935 help 936 Exports the dump image of crashed kernel in ELF format. 937 938config PROC_SYSCTL 939 bool "Sysctl support (/proc/sys)" if EMBEDDED 940 depends on PROC_FS 941 select SYSCTL 942 default y 943 ---help--- 944 The sysctl interface provides a means of dynamically changing 945 certain kernel parameters and variables on the fly without requiring 946 a recompile of the kernel or reboot of the system. The primary 947 interface is through /proc/sys. If you say Y here a tree of 948 modifiable sysctl entries will be generated beneath the 949 /proc/sys directory. They are explained in the files 950 in <file:Documentation/sysctl/>. Note that enabling this 951 option will enlarge the kernel by at least 8 KB. 952 953 As it is generally a good thing, you should say Y here unless 954 building a kernel for install/rescue disks or your system is very 955 limited in memory. 956 957config SYSFS 958 bool "sysfs file system support" if EMBEDDED 959 default y 960 help 961 The sysfs filesystem is a virtual filesystem that the kernel uses to 962 export internal kernel objects, their attributes, and their 963 relationships to one another. 964 965 Users can use sysfs to ascertain useful information about the running 966 kernel, such as the devices the kernel has discovered on each bus and 967 which driver each is bound to. sysfs can also be used to tune devices 968 and other kernel subsystems. 969 970 Some system agents rely on the information in sysfs to operate. 971 /sbin/hotplug uses device and object attributes in sysfs to assist in 972 delegating policy decisions, like persistently naming devices. 973 974 sysfs is currently used by the block subsystem to mount the root 975 partition. If sysfs is disabled you must specify the boot device on 976 the kernel boot command line via its major and minor numbers. For 977 example, "root=03:01" for /dev/hda1. 978 979 Designers of embedded systems may wish to say N here to conserve space. 980 981config TMPFS 982 bool "Virtual memory file system support (former shm fs)" 983 help 984 Tmpfs is a file system which keeps all files in virtual memory. 985 986 Everything in tmpfs is temporary in the sense that no files will be 987 created on your hard drive. The files live in memory and swap 988 space. If you unmount a tmpfs instance, everything stored therein is 989 lost. 990 991 See <file:Documentation/filesystems/tmpfs.txt> for details. 992 993config TMPFS_POSIX_ACL 994 bool "Tmpfs POSIX Access Control Lists" 995 depends on TMPFS 996 select GENERIC_ACL 997 help 998 POSIX Access Control Lists (ACLs) support permissions for users and 999 groups beyond the owner/group/world scheme. 1000 1001 To learn more about Access Control Lists, visit the POSIX ACLs for 1002 Linux website <http://acl.bestbits.at/>. 1003 1004 If you don't know what Access Control Lists are, say N. 1005 1006config HUGETLBFS 1007 bool "HugeTLB file system support" 1008 depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \ 1009 (S390 && 64BIT) || 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" 1022 depends on SYSFS 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/filesystems/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:Documentation/filesystems/hfs.txt> to learn about 1106 the available mount 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 can 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 1415config MINIX_FS 1416 tristate "Minix file system support" 1417 depends on BLOCK 1418 help 1419 Minix is a simple operating system used in many classes about OS's. 1420 The minix file system (method to organize files on a hard disk 1421 partition or a floppy disk) was the original file system for Linux, 1422 but has been superseded by the second extended file system ext2fs. 1423 You don't want to use the minix file system on your hard disk 1424 because of certain built-in restrictions, but it is sometimes found 1425 on older Linux floppy disks. This option will enlarge your kernel 1426 by about 28 KB. If unsure, say N. 1427 1428 To compile this file system support as a module, choose M here: the 1429 module will be called minix. Note that the file system of your root 1430 partition (the one containing the directory /) cannot be compiled as 1431 a module. 1432 1433 1434config HPFS_FS 1435 tristate "OS/2 HPFS file system support" 1436 depends on BLOCK 1437 help 1438 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 1439 is the file system used for organizing files on OS/2 hard disk 1440 partitions. Say Y if you want to be able to read files from and 1441 write files to an OS/2 HPFS partition on your hard drive. OS/2 1442 floppies however are in regular MSDOS format, so you don't need this 1443 option in order to be able to read them. Read 1444 <file:Documentation/filesystems/hpfs.txt>. 1445 1446 To compile this file system support as a module, choose M here: the 1447 module will be called hpfs. If unsure, say N. 1448 1449 1450config QNX4FS_FS 1451 tristate "QNX4 file system support (read only)" 1452 depends on BLOCK 1453 help 1454 This is the file system used by the real-time operating systems 1455 QNX 4 and QNX 6 (the latter is also called QNX RTP). 1456 Further information is available at <http://www.qnx.com/>. 1457 Say Y if you intend to mount QNX hard disks or floppies. 1458 Unless you say Y to "QNX4FS read-write support" below, you will 1459 only be able to read these file systems. 1460 1461 To compile this file system support as a module, choose M here: the 1462 module will be called qnx4. 1463 1464 If you don't know whether you need it, then you don't need it: 1465 answer N. 1466 1467config QNX4FS_RW 1468 bool "QNX4FS write support (DANGEROUS)" 1469 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 1470 help 1471 Say Y if you want to test write support for QNX4 file systems. 1472 1473 It's currently broken, so for now: 1474 answer N. 1475 1476config ROMFS_FS 1477 tristate "ROM file system support" 1478 depends on BLOCK 1479 ---help--- 1480 This is a very small read-only file system mainly intended for 1481 initial ram disks of installation disks, but it could be used for 1482 other read-only media as well. Read 1483 <file:Documentation/filesystems/romfs.txt> for details. 1484 1485 To compile this file system support as a module, choose M here: the 1486 module will be called romfs. Note that the file system of your 1487 root partition (the one containing the directory /) cannot be a 1488 module. 1489 1490 If you don't know whether you need it, then you don't need it: 1491 answer N. 1492 1493 1494config SYSV_FS 1495 tristate "System V/Xenix/V7/Coherent file system support" 1496 depends on BLOCK 1497 help 1498 SCO, Xenix and Coherent are commercial Unix systems for Intel 1499 machines, and Version 7 was used on the DEC PDP-11. Saying Y 1500 here would allow you to read from their floppies and hard disk 1501 partitions. 1502 1503 If you have floppies or hard disk partitions like that, it is likely 1504 that they contain binaries from those other Unix systems; in order 1505 to run these binaries, you will want to install linux-abi which is 1506 a set of kernel modules that lets you run SCO, Xenix, Wyse, 1507 UnixWare, Dell Unix and System V programs under Linux. It is 1508 available via FTP (user: ftp) from 1509 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 1510 NOTE: that will work only for binaries from Intel-based systems; 1511 PDP ones will have to wait until somebody ports Linux to -11 ;-) 1512 1513 If you only intend to mount files from some other Unix over the 1514 network using NFS, you don't need the System V file system support 1515 (but you need NFS file system support obviously). 1516 1517 Note that this option is generally not needed for floppies, since a 1518 good portable way to transport files and directories between unixes 1519 (and even other operating systems) is given by the tar program ("man 1520 tar" or preferably "info tar"). Note also that this option has 1521 nothing whatsoever to do with the option "System V IPC". Read about 1522 the System V file system in 1523 <file:Documentation/filesystems/sysv-fs.txt>. 1524 Saying Y here will enlarge your kernel by about 27 KB. 1525 1526 To compile this as a module, choose M here: the module will be called 1527 sysv. 1528 1529 If you haven't heard about all of this before, it's safe to say N. 1530 1531 1532config UFS_FS 1533 tristate "UFS file system support (read only)" 1534 depends on BLOCK 1535 help 1536 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 1537 OpenBSD and NeXTstep) use a file system called UFS. Some System V 1538 Unixes can create and mount hard disk partitions and diskettes using 1539 this file system as well. Saying Y here will allow you to read from 1540 these partitions; if you also want to write to them, say Y to the 1541 experimental "UFS file system write support", below. Please read the 1542 file <file:Documentation/filesystems/ufs.txt> for more information. 1543 1544 The recently released UFS2 variant (used in FreeBSD 5.x) is 1545 READ-ONLY supported. 1546 1547 If you only intend to mount files from some other Unix over the 1548 network using NFS, you don't need the UFS file system support (but 1549 you need NFS file system support obviously). 1550 1551 Note that this option is generally not needed for floppies, since a 1552 good portable way to transport files and directories between unixes 1553 (and even other operating systems) is given by the tar program ("man 1554 tar" or preferably "info tar"). 1555 1556 When accessing NeXTstep files, you may need to convert them from the 1557 NeXT character set to the Latin1 character set; use the program 1558 recode ("info recode") for this purpose. 1559 1560 To compile the UFS file system support as a module, choose M here: the 1561 module will be called ufs. 1562 1563 If you haven't heard about all of this before, it's safe to say N. 1564 1565config UFS_FS_WRITE 1566 bool "UFS file system write support (DANGEROUS)" 1567 depends on UFS_FS && EXPERIMENTAL 1568 help 1569 Say Y here if you want to try writing to UFS partitions. This is 1570 experimental, so you should back up your UFS partitions beforehand. 1571 1572config UFS_DEBUG 1573 bool "UFS debugging" 1574 depends on UFS_FS 1575 help 1576 If you are experiencing any problems with the UFS filesystem, say 1577 Y here. This will result in _many_ additional debugging messages to be 1578 written to the system log. 1579 1580endmenu 1581 1582menuconfig NETWORK_FILESYSTEMS 1583 bool "Network File Systems" 1584 default y 1585 depends on NET 1586 ---help--- 1587 Say Y here to get to see options for network filesystems and 1588 filesystem-related networking code, such as NFS daemon and 1589 RPCSEC security modules. 1590 This option alone does not add any kernel code. 1591 1592 If you say N, all options in this submenu will be skipped and 1593 disabled; if unsure, say Y here. 1594 1595if NETWORK_FILESYSTEMS 1596 1597config NFS_FS 1598 tristate "NFS file system support" 1599 depends on INET 1600 select LOCKD 1601 select SUNRPC 1602 select NFS_ACL_SUPPORT if NFS_V3_ACL 1603 help 1604 If you are connected to some other (usually local) Unix computer 1605 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 1606 on that computer (the NFS server) using the Network File Sharing 1607 protocol, say Y. "Mounting files" means that the client can access 1608 the files with usual UNIX commands as if they were sitting on the 1609 client's hard disk. For this to work, the server must run the 1610 programs nfsd and mountd (but does not need to have NFS file system 1611 support enabled in its kernel). NFS is explained in the Network 1612 Administrator's Guide, available from 1613 <http://www.tldp.org/docs.html#guide>, on its man page: "man 1614 nfs", and in the NFS-HOWTO. 1615 1616 A superior but less widely used alternative to NFS is provided by 1617 the Coda file system; see "Coda file system support" below. 1618 1619 If you say Y here, you should have said Y to TCP/IP networking also. 1620 This option would enlarge your kernel by about 27 KB. 1621 1622 To compile this file system support as a module, choose M here: the 1623 module will be called nfs. 1624 1625 If you are configuring a diskless machine which will mount its root 1626 file system over NFS at boot time, say Y here and to "Kernel 1627 level IP autoconfiguration" above and to "Root file system on NFS" 1628 below. You cannot compile this driver as a module in this case. 1629 There are two packages designed for booting diskless machines over 1630 the net: netboot, available from 1631 <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 1632 available from <http://ftp1.sourceforge.net/etherboot/>. 1633 1634 If you don't know what all this is about, say N. 1635 1636config NFS_V3 1637 bool "Provide NFSv3 client support" 1638 depends on NFS_FS 1639 help 1640 Say Y here if you want your NFS client to be able to speak version 1641 3 of the NFS protocol. 1642 1643 If unsure, say Y. 1644 1645config NFS_V3_ACL 1646 bool "Provide client support for the NFSv3 ACL protocol extension" 1647 depends on NFS_V3 1648 help 1649 Implement the NFSv3 ACL protocol extension for manipulating POSIX 1650 Access Control Lists. The server should also be compiled with 1651 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1652 1653 If unsure, say N. 1654 1655config NFS_V4 1656 bool "Provide NFSv4 client support (EXPERIMENTAL)" 1657 depends on NFS_FS && EXPERIMENTAL 1658 select RPCSEC_GSS_KRB5 1659 help 1660 Say Y here if you want your NFS client to be able to speak the newer 1661 version 4 of the NFS protocol. 1662 1663 Note: Requires auxiliary userspace daemons which may be found on 1664 http://www.citi.umich.edu/projects/nfsv4/ 1665 1666 If unsure, say N. 1667 1668config NFSD 1669 tristate "NFS server support" 1670 depends on INET 1671 select LOCKD 1672 select SUNRPC 1673 select EXPORTFS 1674 select NFS_ACL_SUPPORT if NFSD_V2_ACL 1675 help 1676 Choose Y here if you want to allow other computers to access 1677 files residing on this system using Sun's Network File System 1678 protocol. To compile the NFS server support as a module, 1679 choose M here: the module will be called nfsd. 1680 1681 You may choose to use a user-space NFS server instead, in which 1682 case you can choose N here. 1683 1684 To export local file systems using NFS, you also need to install 1685 user space programs which can be found in the Linux nfs-utils 1686 package, available from http://linux-nfs.org/. More detail about 1687 the Linux NFS server implementation is available via the 1688 exports(5) man page. 1689 1690 Below you can choose which versions of the NFS protocol are 1691 available to clients mounting the NFS server on this system. 1692 Support for NFS version 2 (RFC 1094) is always available when 1693 CONFIG_NFSD is selected. 1694 1695 If unsure, say N. 1696 1697config NFSD_V2_ACL 1698 bool 1699 depends on NFSD 1700 1701config NFSD_V3 1702 bool "NFS server support for NFS version 3" 1703 depends on NFSD 1704 help 1705 This option enables support in your system's NFS server for 1706 version 3 of the NFS protocol (RFC 1813). 1707 1708 If unsure, say Y. 1709 1710config NFSD_V3_ACL 1711 bool "NFS server support for the NFSv3 ACL protocol extension" 1712 depends on NFSD_V3 1713 select NFSD_V2_ACL 1714 help 1715 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that 1716 never became an official part of the NFS version 3 protocol. 1717 This protocol extension allows applications on NFS clients to 1718 manipulate POSIX Access Control Lists on files residing on NFS 1719 servers. NFS servers enforce POSIX ACLs on local files whether 1720 this protocol is available or not. 1721 1722 This option enables support in your system's NFS server for the 1723 NFSv3 ACL protocol extension allowing NFS clients to manipulate 1724 POSIX ACLs on files exported by your system's NFS server. NFS 1725 clients which support the Solaris NFSv3 ACL protocol can then 1726 access and modify ACLs on your NFS server. 1727 1728 To store ACLs on your NFS server, you also need to enable ACL- 1729 related CONFIG options for your local file systems of choice. 1730 1731 If unsure, say N. 1732 1733config NFSD_V4 1734 bool "NFS server support for NFS version 4 (EXPERIMENTAL)" 1735 depends on NFSD && PROC_FS && EXPERIMENTAL 1736 select NFSD_V3 1737 select FS_POSIX_ACL 1738 select RPCSEC_GSS_KRB5 1739 help 1740 This option enables support in your system's NFS server for 1741 version 4 of the NFS protocol (RFC 3530). 1742 1743 To export files using NFSv4, you need to install additional user 1744 space programs which can be found in the Linux nfs-utils package, 1745 available from http://linux-nfs.org/. 1746 1747 If unsure, say N. 1748 1749config ROOT_NFS 1750 bool "Root file system on NFS" 1751 depends on NFS_FS=y && IP_PNP 1752 help 1753 If you want your Linux box to mount its whole root file system (the 1754 one containing the directory /) from some other computer over the 1755 net via NFS (presumably because your box doesn't have a hard disk), 1756 say Y. Read <file:Documentation/filesystems/nfsroot.txt> for 1757 details. It is likely that in this case, you also want to say Y to 1758 "Kernel level IP autoconfiguration" so that your box can discover 1759 its network address at boot time. 1760 1761 Most people say N here. 1762 1763config LOCKD 1764 tristate 1765 1766config LOCKD_V4 1767 bool 1768 depends on NFSD_V3 || NFS_V3 1769 default y 1770 1771config EXPORTFS 1772 tristate 1773 1774config NFS_ACL_SUPPORT 1775 tristate 1776 select FS_POSIX_ACL 1777 1778config NFS_COMMON 1779 bool 1780 depends on NFSD || NFS_FS 1781 default y 1782 1783config SUNRPC 1784 tristate 1785 1786config SUNRPC_GSS 1787 tristate 1788 1789config SUNRPC_XPRT_RDMA 1790 tristate 1791 depends on SUNRPC && INFINIBAND && EXPERIMENTAL 1792 default SUNRPC && INFINIBAND 1793 help 1794 This option enables an RPC client transport capability that 1795 allows the NFS client to mount servers via an RDMA-enabled 1796 transport. 1797 1798 To compile RPC client RDMA transport support as a module, 1799 choose M here: the module will be called xprtrdma. 1800 1801 If unsure, say N. 1802 1803config SUNRPC_BIND34 1804 bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" 1805 depends on SUNRPC && EXPERIMENTAL 1806 default n 1807 help 1808 RPC requests over IPv6 networks require support for larger 1809 addresses when performing an RPC bind. Sun added support for 1810 IPv6 addressing by creating two new versions of the rpcbind 1811 protocol (RFC 1833). 1812 1813 This option enables support in the kernel RPC client for 1814 querying rpcbind servers via versions 3 and 4 of the rpcbind 1815 protocol. The kernel automatically falls back to version 2 1816 if a remote rpcbind service does not support versions 3 or 4. 1817 By themselves, these new versions do not provide support for 1818 RPC over IPv6, but the new protocol versions are necessary to 1819 support it. 1820 1821 If unsure, say N to get traditional behavior (version 2 rpcbind 1822 requests only). 1823 1824config RPCSEC_GSS_KRB5 1825 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1826 depends on SUNRPC && EXPERIMENTAL 1827 select SUNRPC_GSS 1828 select CRYPTO 1829 select CRYPTO_MD5 1830 select CRYPTO_DES 1831 select CRYPTO_CBC 1832 help 1833 Choose Y here to enable Secure RPC using the Kerberos version 5 1834 GSS-API mechanism (RFC 1964). 1835 1836 Secure RPC calls with Kerberos require an auxiliary user-space 1837 daemon which may be found in the Linux nfs-utils package 1838 available from http://linux-nfs.org/. In addition, user-space 1839 Kerberos support should be installed. 1840 1841 If unsure, say N. 1842 1843config RPCSEC_GSS_SPKM3 1844 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 1845 depends on SUNRPC && EXPERIMENTAL 1846 select SUNRPC_GSS 1847 select CRYPTO 1848 select CRYPTO_MD5 1849 select CRYPTO_DES 1850 select CRYPTO_CAST5 1851 select CRYPTO_CBC 1852 help 1853 Choose Y here to enable Secure RPC using the SPKM3 public key 1854 GSS-API mechansim (RFC 2025). 1855 1856 Secure RPC calls with SPKM3 require an auxiliary userspace 1857 daemon which may be found in the Linux nfs-utils package 1858 available from http://linux-nfs.org/. 1859 1860 If unsure, say N. 1861 1862config SMB_FS 1863 tristate "SMB file system support (OBSOLETE, please use CIFS)" 1864 depends on INET 1865 select NLS 1866 help 1867 SMB (Server Message Block) is the protocol Windows for Workgroups 1868 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 1869 files and printers over local networks. Saying Y here allows you to 1870 mount their file systems (often called "shares" in this context) and 1871 access them just like any other Unix directory. Currently, this 1872 works only if the Windows machines use TCP/IP as the underlying 1873 transport protocol, and not NetBEUI. For details, read 1874 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 1875 available from <http://www.tldp.org/docs.html#howto>. 1876 1877 Note: if you just want your box to act as an SMB *server* and make 1878 files and printing services available to Windows clients (which need 1879 to have a TCP/IP stack), you don't need to say Y here; you can use 1880 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 1881 for that. 1882 1883 General information about how to connect Linux, Windows machines and 1884 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 1885 1886 To compile the SMB support as a module, choose M here: 1887 the module will be called smbfs. Most people say N, however. 1888 1889config SMB_NLS_DEFAULT 1890 bool "Use a default NLS" 1891 depends on SMB_FS 1892 help 1893 Enabling this will make smbfs use nls translations by default. You 1894 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 1895 settings and you need to give the default nls for the SMB server as 1896 CONFIG_SMB_NLS_REMOTE. 1897 1898 The nls settings can be changed at mount time, if your smbmount 1899 supports that, using the codepage and iocharset parameters. 1900 1901 smbmount from samba 2.2.0 or later supports this. 1902 1903config SMB_NLS_REMOTE 1904 string "Default Remote NLS Option" 1905 depends on SMB_NLS_DEFAULT 1906 default "cp437" 1907 help 1908 This setting allows you to specify a default value for which 1909 codepage the server uses. If this field is left blank no 1910 translations will be done by default. The local codepage/charset 1911 default to CONFIG_NLS_DEFAULT. 1912 1913 The nls settings can be changed at mount time, if your smbmount 1914 supports that, using the codepage and iocharset parameters. 1915 1916 smbmount from samba 2.2.0 or later supports this. 1917 1918config CIFS 1919 tristate "CIFS support (advanced network filesystem, SMBFS successor)" 1920 depends on INET 1921 select NLS 1922 help 1923 This is the client VFS module for the Common Internet File System 1924 (CIFS) protocol which is the successor to the Server Message Block 1925 (SMB) protocol, the native file sharing mechanism for most early 1926 PC operating systems. The CIFS protocol is fully supported by 1927 file servers such as Windows 2000 (including Windows 2003, NT 4 1928 and Windows XP) as well by Samba (which provides excellent CIFS 1929 server support for Linux and many other operating systems). Limited 1930 support for OS/2 and Windows ME and similar servers is provided as 1931 well. 1932 1933 The cifs module provides an advanced network file system 1934 client for mounting to CIFS compliant servers. It includes 1935 support for DFS (hierarchical name space), secure per-user 1936 session establishment via Kerberos or NTLM or NTLMv2, 1937 safe distributed caching (oplock), optional packet 1938 signing, Unicode and other internationalization improvements. 1939 If you need to mount to Samba or Windows from this machine, say Y. 1940 1941config CIFS_STATS 1942 bool "CIFS statistics" 1943 depends on CIFS 1944 help 1945 Enabling this option will cause statistics for each server share 1946 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 1947 1948config CIFS_STATS2 1949 bool "Extended statistics" 1950 depends on CIFS_STATS 1951 help 1952 Enabling this option will allow more detailed statistics on SMB 1953 request timing to be displayed in /proc/fs/cifs/DebugData and also 1954 allow optional logging of slow responses to dmesg (depending on the 1955 value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1956 These additional statistics may have a minor effect on performance 1957 and memory utilization. 1958 1959 Unless you are a developer or are doing network performance analysis 1960 or tuning, say N. 1961 1962config CIFS_WEAK_PW_HASH 1963 bool "Support legacy servers which use weaker LANMAN security" 1964 depends on CIFS 1965 help 1966 Modern CIFS servers including Samba and most Windows versions 1967 (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 1968 security mechanisms. These hash the password more securely 1969 than the mechanisms used in the older LANMAN version of the 1970 SMB protocol but LANMAN based authentication is needed to 1971 establish sessions with some old SMB servers. 1972 1973 Enabling this option allows the cifs module to mount to older 1974 LANMAN based servers such as OS/2 and Windows 95, but such 1975 mounts may be less secure than mounts using NTLM or more recent 1976 security mechanisms if you are on a public network. Unless you 1977 have a need to access old SMB servers (and are on a private 1978 network) you probably want to say N. Even if this support 1979 is enabled in the kernel build, LANMAN authentication will not be 1980 used automatically. At runtime LANMAN mounts are disabled but 1981 can be set to required (or optional) either in 1982 /proc/fs/cifs (see fs/cifs/README for more detail) or via an 1983 option on the mount command. This support is disabled by 1984 default in order to reduce the possibility of a downgrade 1985 attack. 1986 1987 If unsure, say N. 1988 1989config CIFS_XATTR 1990 bool "CIFS extended attributes" 1991 depends on CIFS 1992 help 1993 Extended attributes are name:value pairs associated with inodes by 1994 the kernel or by users (see the attr(5) manual page, or visit 1995 <http://acl.bestbits.at/> for details). CIFS maps the name of 1996 extended attributes beginning with the user namespace prefix 1997 to SMB/CIFS EAs. EAs are stored on Windows servers without the 1998 user namespace prefix, but their names are seen by Linux cifs clients 1999 prefaced by the user namespace prefix. The system namespace 2000 (used by some filesystems to store ACLs) is not supported at 2001 this time. 2002 2003 If unsure, say N. 2004 2005config CIFS_POSIX 2006 bool "CIFS POSIX Extensions" 2007 depends on CIFS_XATTR 2008 help 2009 Enabling this option will cause the cifs client to attempt to 2010 negotiate a newer dialect with servers, such as Samba 3.0.5 2011 or later, that optionally can handle more POSIX like (rather 2012 than Windows like) file behavior. It also enables 2013 support for POSIX ACLs (getfacl and setfacl) to servers 2014 (such as Samba 3.10 and later) which can negotiate 2015 CIFS POSIX ACL support. If unsure, say N. 2016 2017config CIFS_DEBUG2 2018 bool "Enable additional CIFS debugging routines" 2019 depends on CIFS 2020 help 2021 Enabling this option adds a few more debugging routines 2022 to the cifs code which slightly increases the size of 2023 the cifs module and can cause additional logging of debug 2024 messages in some error paths, slowing performance. This 2025 option can be turned off unless you are debugging 2026 cifs problems. If unsure, say N. 2027 2028config CIFS_EXPERIMENTAL 2029 bool "CIFS Experimental Features (EXPERIMENTAL)" 2030 depends on CIFS && EXPERIMENTAL 2031 help 2032 Enables cifs features under testing. These features are 2033 experimental and currently include DFS support and directory 2034 change notification ie fcntl(F_DNOTIFY), as well as the upcall 2035 mechanism which will be used for Kerberos session negotiation 2036 and uid remapping. Some of these features also may depend on 2037 setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 2038 (which is disabled by default). See the file fs/cifs/README 2039 for more details. If unsure, say N. 2040 2041config CIFS_UPCALL 2042 bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)" 2043 depends on CIFS_EXPERIMENTAL 2044 depends on KEYS 2045 help 2046 Enables an upcall mechanism for CIFS which accesses 2047 userspace helper utilities to provide SPNEGO packaged (RFC 4178) 2048 Kerberos tickets which are needed to mount to certain secure servers 2049 (for which more secure Kerberos authentication is required). If 2050 unsure, say N. 2051 2052config CIFS_DFS_UPCALL 2053 bool "DFS feature support (EXPERIMENTAL)" 2054 depends on CIFS_EXPERIMENTAL 2055 depends on KEYS 2056 help 2057 Enables an upcall mechanism for CIFS which contacts userspace 2058 helper utilities to provide server name resolution (host names to 2059 IP addresses) which is needed for implicit mounts of DFS junction 2060 points. If unsure, say N. 2061 2062config NCP_FS 2063 tristate "NCP file system support (to mount NetWare volumes)" 2064 depends on IPX!=n || INET 2065 help 2066 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 2067 used by Novell NetWare clients to talk to file servers. It is to 2068 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 2069 to mount NetWare file server volumes and to access them just like 2070 any other Unix directory. For details, please read the file 2071 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 2072 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 2073 2074 You do not have to say Y here if you want your Linux box to act as a 2075 file *server* for Novell NetWare clients. 2076 2077 General information about how to connect Linux, Windows machines and 2078 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 2079 2080 To compile this as a module, choose M here: the module will be called 2081 ncpfs. Say N unless you are connected to a Novell network. 2082 2083source "fs/ncpfs/Kconfig" 2084 2085config CODA_FS 2086 tristate "Coda file system support (advanced network fs)" 2087 depends on INET 2088 help 2089 Coda is an advanced network file system, similar to NFS in that it 2090 enables you to mount file systems of a remote server and access them 2091 with regular Unix commands as if they were sitting on your hard 2092 disk. Coda has several advantages over NFS: support for 2093 disconnected operation (e.g. for laptops), read/write server 2094 replication, security model for authentication and encryption, 2095 persistent client caches and write back caching. 2096 2097 If you say Y here, your Linux box will be able to act as a Coda 2098 *client*. You will need user level code as well, both for the 2099 client and server. Servers are currently user level, i.e. they need 2100 no kernel support. Please read 2101 <file:Documentation/filesystems/coda.txt> and check out the Coda 2102 home page <http://www.coda.cs.cmu.edu/>. 2103 2104 To compile the coda client support as a module, choose M here: the 2105 module will be called coda. 2106 2107config CODA_FS_OLD_API 2108 bool "Use 96-bit Coda file identifiers" 2109 depends on CODA_FS 2110 help 2111 A new kernel-userspace API had to be introduced for Coda v6.0 2112 to support larger 128-bit file identifiers as needed by the 2113 new realms implementation. 2114 2115 However this new API is not backward compatible with older 2116 clients. If you really need to run the old Coda userspace 2117 cache manager then say Y. 2118 2119 For most cases you probably want to say N. 2120 2121config AFS_FS 2122 tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 2123 depends on INET && EXPERIMENTAL 2124 select AF_RXRPC 2125 help 2126 If you say Y here, you will get an experimental Andrew File System 2127 driver. It currently only supports unsecured read-only AFS access. 2128 2129 See <file:Documentation/filesystems/afs.txt> for more information. 2130 2131 If unsure, say N. 2132 2133config AFS_DEBUG 2134 bool "AFS dynamic debugging" 2135 depends on AFS_FS 2136 help 2137 Say Y here to make runtime controllable debugging messages appear. 2138 2139 See <file:Documentation/filesystems/afs.txt> for more information. 2140 2141 If unsure, say N. 2142 2143config 9P_FS 2144 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2145 depends on INET && NET_9P && EXPERIMENTAL 2146 help 2147 If you say Y here, you will get experimental support for 2148 Plan 9 resource sharing via the 9P2000 protocol. 2149 2150 See <http://v9fs.sf.net> for more information. 2151 2152 If unsure, say N. 2153 2154endif # NETWORK_FILESYSTEMS 2155 2156if BLOCK 2157menu "Partition Types" 2158 2159source "fs/partitions/Kconfig" 2160 2161endmenu 2162endif 2163 2164source "fs/nls/Kconfig" 2165source "fs/dlm/Kconfig" 2166 2167endmenu