11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# File system configuration 31da177e4SLinus Torvalds# 41da177e4SLinus Torvalds 51da177e4SLinus Torvaldsmenu "File systems" 61da177e4SLinus Torvalds 79361401eSDavid Howellsif BLOCK 89361401eSDavid Howells 91da177e4SLinus Torvaldsconfig EXT2_FS 101da177e4SLinus Torvalds tristate "Second extended fs support" 111da177e4SLinus Torvalds help 121da177e4SLinus Torvalds Ext2 is a standard Linux file system for hard disks. 131da177e4SLinus Torvalds 141da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 15d23edbd3SJan Engelhardt module will be called ext2. 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds If unsure, say Y. 181da177e4SLinus Torvalds 191da177e4SLinus Torvaldsconfig EXT2_FS_XATTR 201da177e4SLinus Torvalds bool "Ext2 extended attributes" 211da177e4SLinus Torvalds depends on EXT2_FS 221da177e4SLinus Torvalds help 231da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 241da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 251da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds If unsure, say N. 281da177e4SLinus Torvalds 291da177e4SLinus Torvaldsconfig EXT2_FS_POSIX_ACL 301da177e4SLinus Torvalds bool "Ext2 POSIX Access Control Lists" 311da177e4SLinus Torvalds depends on EXT2_FS_XATTR 32b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 331da177e4SLinus Torvalds help 341da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 351da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 381da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 411da177e4SLinus Torvalds 421da177e4SLinus Torvaldsconfig EXT2_FS_SECURITY 431da177e4SLinus Torvalds bool "Ext2 Security Labels" 441da177e4SLinus Torvalds depends on EXT2_FS_XATTR 451da177e4SLinus Torvalds help 461da177e4SLinus Torvalds Security labels support alternative access control models 471da177e4SLinus Torvalds implemented by security modules like SELinux. This option 481da177e4SLinus Torvalds enables an extended attribute handler for file security 491da177e4SLinus Torvalds labels in the ext2 filesystem. 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds If you are not using a security module that requires using 521da177e4SLinus Torvalds extended attributes for file security labels, say N. 531da177e4SLinus Torvalds 546d79125bSCarsten Otteconfig EXT2_FS_XIP 556d79125bSCarsten Otte bool "Ext2 execute in place support" 560c426f26SAl Viro depends on EXT2_FS && MMU 576d79125bSCarsten Otte help 586d79125bSCarsten Otte Execute in place can be used on memory-backed block devices. If you 596d79125bSCarsten Otte enable this option, you can select to mount block devices which are 606d79125bSCarsten Otte capable of this feature without using the page cache. 616d79125bSCarsten Otte 626d79125bSCarsten Otte If you do not use a block device that is capable of using this, 636d79125bSCarsten Otte or if unsure, say N. 646d79125bSCarsten Otte 656d79125bSCarsten Otteconfig FS_XIP 666d79125bSCarsten Otte# execute in place 676d79125bSCarsten Otte bool 686d79125bSCarsten Otte depends on EXT2_FS_XIP 696d79125bSCarsten Otte default y 706d79125bSCarsten Otte 711da177e4SLinus Torvaldsconfig EXT3_FS 721da177e4SLinus Torvalds tristate "Ext3 journalling file system support" 73b4e40a51SMark Fasheh select JBD 741da177e4SLinus Torvalds help 75cc2e2767SMatt LaPlante This is the journalling version of the Second extended file system 761da177e4SLinus Torvalds (often called ext3), the de facto standard Linux file system 771da177e4SLinus Torvalds (method to organize files on a storage device) for hard disks. 781da177e4SLinus Torvalds 79cc2e2767SMatt LaPlante The journalling code included in this driver means you do not have 801da177e4SLinus Torvalds to run e2fsck (file system checker) on your file systems after a 811da177e4SLinus Torvalds crash. The journal keeps track of any changes that were being made 821da177e4SLinus Torvalds at the time the system crashed, and can ensure that your file system 831da177e4SLinus Torvalds is consistent without the need for a lengthy check. 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds Other than adding the journal to the file system, the on-disk format 861da177e4SLinus Torvalds of ext3 is identical to ext2. It is possible to freely switch 871da177e4SLinus Torvalds between using the ext3 driver and the ext2 driver, as long as the 881da177e4SLinus Torvalds file system has been cleanly unmounted, or e2fsck is run on the file 891da177e4SLinus Torvalds system. 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds To add a journal on an existing ext2 file system or change the 921da177e4SLinus Torvalds behavior of ext3 file systems, you can use the tune2fs utility ("man 931da177e4SLinus Torvalds tune2fs"). To modify attributes of files and directories on ext3 941da177e4SLinus Torvalds file systems, use chattr ("man chattr"). You need to be using 951da177e4SLinus Torvalds e2fsprogs version 1.20 or later in order to create ext3 journals 961da177e4SLinus Torvalds (available at <http://sourceforge.net/projects/e2fsprogs/>). 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 99d23edbd3SJan Engelhardt module will be called ext3. 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvaldsconfig EXT3_FS_XATTR 1021da177e4SLinus Torvalds bool "Ext3 extended attributes" 1031da177e4SLinus Torvalds depends on EXT3_FS 1041da177e4SLinus Torvalds default y 1051da177e4SLinus Torvalds help 1061da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 1071da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 1081da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds If unsure, say N. 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds You need this for POSIX ACL support on ext3. 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvaldsconfig EXT3_FS_POSIX_ACL 1151da177e4SLinus Torvalds bool "Ext3 POSIX Access Control Lists" 1161da177e4SLinus Torvalds depends on EXT3_FS_XATTR 117b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 1181da177e4SLinus Torvalds help 1191da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 1201da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 1231da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 1241da177e4SLinus Torvalds 1251da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvaldsconfig EXT3_FS_SECURITY 1281da177e4SLinus Torvalds bool "Ext3 Security Labels" 1291da177e4SLinus Torvalds depends on EXT3_FS_XATTR 1301da177e4SLinus Torvalds help 1311da177e4SLinus Torvalds Security labels support alternative access control models 1321da177e4SLinus Torvalds implemented by security modules like SELinux. This option 1331da177e4SLinus Torvalds enables an extended attribute handler for file security 1341da177e4SLinus Torvalds labels in the ext3 filesystem. 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds If you are not using a security module that requires using 1371da177e4SLinus Torvalds extended attributes for file security labels, say N. 1381da177e4SLinus Torvalds 13903010a33STheodore Ts'oconfig EXT4_FS 14003010a33STheodore Ts'o tristate "The Extended 4 (ext4) filesystem" 141dab291afSMingming Cao select JBD2 142717d50e4SAndreas Dilger select CRC16 14302ea2104SMingming Cao help 14403010a33STheodore Ts'o This is the next generation of the ext3 filesystem. 14502ea2104SMingming Cao 14602ea2104SMingming Cao Unlike the change from ext2 filesystem to ext3 filesystem, 14703010a33STheodore Ts'o the on-disk format of ext4 is not forwards compatible with 14803010a33STheodore Ts'o ext3; it is based on extent maps and it supports 48-bit 14903010a33STheodore Ts'o physical block numbers. The ext4 filesystem also supports delayed 15003010a33STheodore Ts'o allocation, persistent preallocation, high resolution time stamps, 15103010a33STheodore Ts'o and a number of other features to improve performance and speed 15203010a33STheodore Ts'o up fsck time. For more information, please see the web pages at 15303010a33STheodore Ts'o http://ext4.wiki.kernel.org. 15402ea2104SMingming Cao 15503010a33STheodore Ts'o The ext4 filesystem will support mounting an ext3 15603010a33STheodore Ts'o filesystem; while there will be some performance gains from 15703010a33STheodore Ts'o the delayed allocation and inode table readahead, the best 15803010a33STheodore Ts'o performance gains will require enabling ext4 features in the 15903010a33STheodore Ts'o filesystem, or formating a new filesystem as an ext4 16003010a33STheodore Ts'o filesystem initially. 16102ea2104SMingming Cao 16202ea2104SMingming Cao To compile this file system support as a module, choose M here. The 163d23edbd3SJan Engelhardt module will be called ext4dev. 16402ea2104SMingming Cao 16502ea2104SMingming Cao If unsure, say N. 16602ea2104SMingming Cao 16703010a33STheodore Ts'oconfig EXT4DEV_COMPAT 16803010a33STheodore Ts'o bool "Enable ext4dev compatibility" 16903010a33STheodore Ts'o depends on EXT4_FS 17003010a33STheodore Ts'o help 17103010a33STheodore Ts'o Starting with 2.6.28, the name of the ext4 filesystem was 17203010a33STheodore Ts'o renamed from ext4dev to ext4. Unfortunately there are some 173f319fb8bSJan Engelhardt legacy userspace programs (such as klibc's fstype) have 17403010a33STheodore Ts'o "ext4dev" hardcoded. 17503010a33STheodore Ts'o 17603010a33STheodore Ts'o To enable backwards compatibility so that systems that are 17703010a33STheodore Ts'o still expecting to mount ext4 filesystems using ext4dev, 17803010a33STheodore Ts'o chose Y here. This feature will go away by 2.6.31, so 17903010a33STheodore Ts'o please arrange to get your userspace programs fixed! 18003010a33STheodore Ts'o 18103010a33STheodore Ts'oconfig EXT4_FS_XATTR 18203010a33STheodore Ts'o bool "Ext4 extended attributes" 18303010a33STheodore Ts'o depends on EXT4_FS 18402ea2104SMingming Cao default y 18502ea2104SMingming Cao help 18602ea2104SMingming Cao Extended attributes are name:value pairs associated with inodes by 18702ea2104SMingming Cao the kernel or by users (see the attr(5) manual page, or visit 18802ea2104SMingming Cao <http://acl.bestbits.at/> for details). 18902ea2104SMingming Cao 19002ea2104SMingming Cao If unsure, say N. 19102ea2104SMingming Cao 19203010a33STheodore Ts'o You need this for POSIX ACL support on ext4. 19302ea2104SMingming Cao 19403010a33STheodore Ts'oconfig EXT4_FS_POSIX_ACL 19503010a33STheodore Ts'o bool "Ext4 POSIX Access Control Lists" 19603010a33STheodore Ts'o depends on EXT4_FS_XATTR 19702ea2104SMingming Cao select FS_POSIX_ACL 19802ea2104SMingming Cao help 19902ea2104SMingming Cao POSIX Access Control Lists (ACLs) support permissions for users and 20002ea2104SMingming Cao groups beyond the owner/group/world scheme. 20102ea2104SMingming Cao 20202ea2104SMingming Cao To learn more about Access Control Lists, visit the POSIX ACLs for 20302ea2104SMingming Cao Linux website <http://acl.bestbits.at/>. 20402ea2104SMingming Cao 20502ea2104SMingming Cao If you don't know what Access Control Lists are, say N 20602ea2104SMingming Cao 20703010a33STheodore Ts'oconfig EXT4_FS_SECURITY 20803010a33STheodore Ts'o bool "Ext4 Security Labels" 20903010a33STheodore Ts'o depends on EXT4_FS_XATTR 21002ea2104SMingming Cao help 21102ea2104SMingming Cao Security labels support alternative access control models 21202ea2104SMingming Cao implemented by security modules like SELinux. This option 21302ea2104SMingming Cao enables an extended attribute handler for file security 21403010a33STheodore Ts'o labels in the ext4 filesystem. 21502ea2104SMingming Cao 21602ea2104SMingming Cao If you are not using a security module that requires using 21702ea2104SMingming Cao extended attributes for file security labels, say N. 21802ea2104SMingming Cao 2191da177e4SLinus Torvaldsconfig JBD 2201da177e4SLinus Torvalds tristate 2211da177e4SLinus Torvalds help 222cc2e2767SMatt LaPlante This is a generic journalling layer for block devices. It is 2232b4e30fbSJoel Becker currently used by the ext3 file system, but it could also be 2242b4e30fbSJoel Becker used to add journal support to other file systems or block 225b4e40a51SMark Fasheh devices such as RAID or LVM. 2261da177e4SLinus Torvalds 2272b4e30fbSJoel Becker If you are using the ext3 file system, you need to say Y here. 2282b4e30fbSJoel Becker If you are not using ext3 then you will probably want to say N. 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds To compile this device as a module, choose M here: the module will be 2312b4e30fbSJoel Becker called jbd. If you are compiling ext3 into the kernel, you 2322b4e30fbSJoel Becker cannot compile this code as a module. 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvaldsconfig JBD_DEBUG 2351da177e4SLinus Torvalds bool "JBD (ext3) debugging support" 236c2a9159cSJose R. Santos depends on JBD && DEBUG_FS 2371da177e4SLinus Torvalds help 2381da177e4SLinus Torvalds If you are using the ext3 journaled file system (or potentially any 2391da177e4SLinus Torvalds other file system/device using JBD), this option allows you to 2401da177e4SLinus Torvalds enable debugging output while the system is running, in order to 2411da177e4SLinus Torvalds help track down any problems you are having. By default the 2421da177e4SLinus Torvalds debugging output will be turned off. 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds If you select Y here, then you will be able to turn on debugging 245c2a9159cSJose R. Santos with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a 246c2a9159cSJose R. Santos number between 1 and 5, the higher the number, the more debugging 247c2a9159cSJose R. Santos output is generated. To turn debugging off again, do 248c2a9159cSJose R. Santos "echo 0 > /sys/kernel/debug/jbd/jbd-debug". 2491da177e4SLinus Torvalds 250dab291afSMingming Caoconfig JBD2 251dab291afSMingming Cao tristate 252818d276cSGirish Shilamkar select CRC32 253dab291afSMingming Cao help 254dab291afSMingming Cao This is a generic journaling layer for block devices that support 255dab291afSMingming Cao both 32-bit and 64-bit block numbers. It is currently used by 2562b4e30fbSJoel Becker the ext4 and OCFS2 filesystems, but it could also be used to add 257dab291afSMingming Cao journal support to other file systems or block devices such 258dab291afSMingming Cao as RAID or LVM. 259dab291afSMingming Cao 2602b4e30fbSJoel Becker If you are using ext4 or OCFS2, you need to say Y here. 2612b4e30fbSJoel Becker If you are not using ext4 or OCFS2 then you will 2622b4e30fbSJoel Becker probably want to say N. 263dab291afSMingming Cao 264dab291afSMingming Cao To compile this device as a module, choose M here. The module will be 2652b4e30fbSJoel Becker called jbd2. If you are compiling ext4 or OCFS2 into the kernel, 266dab291afSMingming Cao you cannot compile this code as a module. 267dab291afSMingming Cao 268dab291afSMingming Caoconfig JBD2_DEBUG 26903010a33STheodore Ts'o bool "JBD2 (ext4) debugging support" 2700f49d5d0SJose R. Santos depends on JBD2 && DEBUG_FS 271dab291afSMingming Cao help 27203010a33STheodore Ts'o If you are using the ext4 journaled file system (or 273dab291afSMingming Cao potentially any other filesystem/device using JBD2), this option 274dab291afSMingming Cao allows you to enable debugging output while the system is running, 275dab291afSMingming Cao in order to help track down any problems you are having. 276dab291afSMingming Cao By default, the debugging output will be turned off. 277dab291afSMingming Cao 278dab291afSMingming Cao If you select Y here, then you will be able to turn on debugging 2790f49d5d0SJose R. Santos with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a 2800f49d5d0SJose R. Santos number between 1 and 5. The higher the number, the more debugging 2810f49d5d0SJose R. Santos output is generated. To turn debugging off again, do 2820f49d5d0SJose R. Santos "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug". 283dab291afSMingming Cao 2841da177e4SLinus Torvaldsconfig FS_MBCACHE 28502ea2104SMingming Cao# Meta block cache for Extended Attributes (ext2/ext3/ext4) 2861da177e4SLinus Torvalds tristate 28703010a33STheodore Ts'o depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR 28803010a33STheodore Ts'o default y if EXT2_FS=y || EXT3_FS=y || EXT4_FS=y 28903010a33STheodore Ts'o default m if EXT2_FS=m || EXT3_FS=m || EXT4_FS=m 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvaldsconfig REISERFS_FS 2921da177e4SLinus Torvalds tristate "Reiserfs support" 2931da177e4SLinus Torvalds help 2941da177e4SLinus Torvalds Stores not just filenames but the files themselves in a balanced 295cc2e2767SMatt LaPlante tree. Uses journalling. 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds Balanced trees are more efficient than traditional file system 2981da177e4SLinus Torvalds architectural foundations. 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds In general, ReiserFS is as fast as ext2, but is very efficient with 3011da177e4SLinus Torvalds large directories and small files. Additional patches are needed 3021da177e4SLinus Torvalds for NFS and quotas, please see <http://www.namesys.com/> for links. 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds It is more easily extended to have features currently found in 3051da177e4SLinus Torvalds database and keyword search systems than block allocation based file 3061da177e4SLinus Torvalds systems are. The next version will be so extended, and will support 3071da177e4SLinus Torvalds plugins consistent with our motto ``It takes more than a license to 3081da177e4SLinus Torvalds make source code open.'' 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds Read <http://www.namesys.com/> to learn more about reiserfs. 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds If you like it, you can pay us to add new features to it that you 3151da177e4SLinus Torvalds need, buy a support contract, or pay us to port it to another OS. 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvaldsconfig REISERFS_CHECK 3181da177e4SLinus Torvalds bool "Enable reiserfs debug mode" 3191da177e4SLinus Torvalds depends on REISERFS_FS 3201da177e4SLinus Torvalds help 3211da177e4SLinus Torvalds If you set this to Y, then ReiserFS will perform every check it can 3221da177e4SLinus Torvalds possibly imagine of its internal consistency throughout its 3231da177e4SLinus Torvalds operation. It will also go substantially slower. More than once we 3241da177e4SLinus Torvalds have forgotten that this was on, and then gone despondent over the 3251da177e4SLinus Torvalds latest benchmarks.:-) Use of this option allows our team to go all 3261da177e4SLinus Torvalds out in checking for consistency when debugging without fear of its 3271da177e4SLinus Torvalds effect on end users. If you are on the verge of sending in a bug 3281da177e4SLinus Torvalds report, say Y and you might get a useful error message. Almost 3291da177e4SLinus Torvalds everyone should say N. 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvaldsconfig REISERFS_PROC_INFO 3321da177e4SLinus Torvalds bool "Stats in /proc/fs/reiserfs" 333880ebdc5SRandy Dunlap depends on REISERFS_FS && PROC_FS 3341da177e4SLinus Torvalds help 3351da177e4SLinus Torvalds Create under /proc/fs/reiserfs a hierarchy of files, displaying 3361da177e4SLinus Torvalds various ReiserFS statistics and internal data at the expense of 3371da177e4SLinus Torvalds making your kernel or module slightly larger (+8 KB). This also 3381da177e4SLinus Torvalds increases the amount of kernel memory required for each mount. 3391da177e4SLinus Torvalds Almost everyone but ReiserFS developers and people fine-tuning 3401da177e4SLinus Torvalds reiserfs or tracing problems should say N. 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvaldsconfig REISERFS_FS_XATTR 3431da177e4SLinus Torvalds bool "ReiserFS extended attributes" 3441da177e4SLinus Torvalds depends on REISERFS_FS 3451da177e4SLinus Torvalds help 3461da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 3471da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 3481da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds If unsure, say N. 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvaldsconfig REISERFS_FS_POSIX_ACL 3531da177e4SLinus Torvalds bool "ReiserFS POSIX Access Control Lists" 3541da177e4SLinus Torvalds depends on REISERFS_FS_XATTR 355b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 3561da177e4SLinus Torvalds help 3571da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 3581da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 3611da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvaldsconfig REISERFS_FS_SECURITY 3661da177e4SLinus Torvalds bool "ReiserFS Security Labels" 3671da177e4SLinus Torvalds depends on REISERFS_FS_XATTR 3681da177e4SLinus Torvalds help 3691da177e4SLinus Torvalds Security labels support alternative access control models 3701da177e4SLinus Torvalds implemented by security modules like SELinux. This option 3711da177e4SLinus Torvalds enables an extended attribute handler for file security 3721da177e4SLinus Torvalds labels in the ReiserFS filesystem. 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds If you are not using a security module that requires using 3751da177e4SLinus Torvalds extended attributes for file security labels, say N. 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvaldsconfig JFS_FS 3781da177e4SLinus Torvalds tristate "JFS filesystem support" 3791da177e4SLinus Torvalds select NLS 3801da177e4SLinus Torvalds help 3811da177e4SLinus Torvalds This is a port of IBM's Journaled Filesystem . More information is 3821da177e4SLinus Torvalds available in the file <file:Documentation/filesystems/jfs.txt>. 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds If you do not intend to use the JFS filesystem, say N. 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvaldsconfig JFS_POSIX_ACL 3871da177e4SLinus Torvalds bool "JFS POSIX Access Control Lists" 3881da177e4SLinus Torvalds depends on JFS_FS 389b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 3901da177e4SLinus Torvalds help 3911da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 3921da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 3951da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvaldsconfig JFS_SECURITY 4001da177e4SLinus Torvalds bool "JFS Security Labels" 4011da177e4SLinus Torvalds depends on JFS_FS 4021da177e4SLinus Torvalds help 4031da177e4SLinus Torvalds Security labels support alternative access control models 4041da177e4SLinus Torvalds implemented by security modules like SELinux. This option 4051da177e4SLinus Torvalds enables an extended attribute handler for file security 4061da177e4SLinus Torvalds labels in the jfs filesystem. 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds If you are not using a security module that requires using 4091da177e4SLinus Torvalds extended attributes for file security labels, say N. 4101da177e4SLinus Torvalds 4111da177e4SLinus Torvaldsconfig JFS_DEBUG 4121da177e4SLinus Torvalds bool "JFS debugging" 4131da177e4SLinus Torvalds depends on JFS_FS 4141da177e4SLinus Torvalds help 4151da177e4SLinus Torvalds If you are experiencing any problems with the JFS filesystem, say 4161da177e4SLinus Torvalds Y here. This will result in additional debugging messages to be 4171da177e4SLinus Torvalds written to the system log. Under normal circumstances, this 4181da177e4SLinus Torvalds results in very little overhead. 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvaldsconfig JFS_STATISTICS 4211da177e4SLinus Torvalds bool "JFS statistics" 4221da177e4SLinus Torvalds depends on JFS_FS 4231da177e4SLinus Torvalds help 4241da177e4SLinus Torvalds Enabling this option will cause statistics from the JFS file system 4251da177e4SLinus Torvalds to be made available to the user in the /proc/fs/jfs/ directory. 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvaldsconfig FS_POSIX_ACL 42889206955SChuck Lever# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4) 4291da177e4SLinus Torvalds# 4301da177e4SLinus Torvalds# NOTE: you can implement Posix ACLs without these helpers (XFS does). 4311da177e4SLinus Torvalds# Never use this symbol for ifdefs. 4321da177e4SLinus Torvalds# 4331da177e4SLinus Torvalds bool 434b84c2157SAndreas Gruenbacher default n 4351da177e4SLinus Torvalds 436bfcd17a6SThomas Petazzoniconfig FILE_LOCKING 437bfcd17a6SThomas Petazzoni bool "Enable POSIX file locking API" if EMBEDDED 438bfcd17a6SThomas Petazzoni default y 439bfcd17a6SThomas Petazzoni help 440bfcd17a6SThomas Petazzoni This option enables standard file locking support, required 441bfcd17a6SThomas Petazzoni for filesystems like NFS and for the flock() system 442bfcd17a6SThomas Petazzoni call. Disabling this option saves about 11k. 443bfcd17a6SThomas Petazzoni 4441da177e4SLinus Torvaldssource "fs/xfs/Kconfig" 445f7825dcfSDavid Teiglandsource "fs/gfs2/Kconfig" 4461da177e4SLinus Torvalds 447b4e40a51SMark Fashehconfig OCFS2_FS 44802ed8416SMark Fasheh tristate "OCFS2 file system support" 44902ed8416SMark Fasheh depends on NET && SYSFS 450b4e40a51SMark Fasheh select CONFIGFS_FS 4512b4e30fbSJoel Becker select JBD2 452b4e40a51SMark Fasheh select CRC32 453b4e40a51SMark Fasheh help 454b4e40a51SMark Fasheh OCFS2 is a general purpose extent based shared disk cluster file 455b4e40a51SMark Fasheh system with many similarities to ext3. It supports 64 bit inode 456b4e40a51SMark Fasheh numbers, and has automatically extending metadata groups which may 457b4e40a51SMark Fasheh also make it attractive for non-clustered use. 458b4e40a51SMark Fasheh 459b4e40a51SMark Fasheh You'll want to install the ocfs2-tools package in order to at least 460b4e40a51SMark Fasheh get "mount.ocfs2". 461b4e40a51SMark Fasheh 462b4e40a51SMark Fasheh Project web page: http://oss.oracle.com/projects/ocfs2 463b4e40a51SMark Fasheh Tools web page: http://oss.oracle.com/projects/ocfs2-tools 464b4e40a51SMark Fasheh OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/ 465b4e40a51SMark Fasheh 4661252c434SMark Fasheh For more information on OCFS2, see the file 4671252c434SMark Fasheh <file:Documentation/filesystems/ocfs2.txt>. 468b4e40a51SMark Fasheh 4699341d229SJoel Beckerconfig OCFS2_FS_O2CB 4709341d229SJoel Becker tristate "O2CB Kernelspace Clustering" 4719341d229SJoel Becker depends on OCFS2_FS 4729341d229SJoel Becker default y 4739341d229SJoel Becker help 4749341d229SJoel Becker OCFS2 includes a simple kernelspace clustering package, the OCFS2 4759341d229SJoel Becker Cluster Base. It only requires a very small userspace component 4769341d229SJoel Becker to configure it. This comes with the standard ocfs2-tools package. 4779341d229SJoel Becker O2CB is limited to maintaining a cluster for OCFS2 file systems. 4789341d229SJoel Becker It cannot manage any other cluster applications. 4799341d229SJoel Becker 4809341d229SJoel Becker It is always safe to say Y here, as the clustering method is 4819341d229SJoel Becker run-time selectable. 4829341d229SJoel Becker 4839341d229SJoel Beckerconfig OCFS2_FS_USERSPACE_CLUSTER 4849341d229SJoel Becker tristate "OCFS2 Userspace Clustering" 4859341d229SJoel Becker depends on OCFS2_FS && DLM 4869341d229SJoel Becker default y 4879341d229SJoel Becker help 4889341d229SJoel Becker This option will allow OCFS2 to use userspace clustering services 4899341d229SJoel Becker in conjunction with the DLM in fs/dlm. If you are using a 4909341d229SJoel Becker userspace cluster manager, say Y here. 4919341d229SJoel Becker 4929341d229SJoel Becker It is safe to say Y, as the clustering method is run-time 4939341d229SJoel Becker selectable. 4949341d229SJoel Becker 495ce7231e9SSunil Mushranconfig OCFS2_FS_STATS 496ce7231e9SSunil Mushran bool "OCFS2 statistics" 497ce7231e9SSunil Mushran depends on OCFS2_FS 498ce7231e9SSunil Mushran default y 499ce7231e9SSunil Mushran help 500ce7231e9SSunil Mushran This option allows some fs statistics to be captured. Enabling 501ce7231e9SSunil Mushran this option may increase the memory consumption. 502ce7231e9SSunil Mushran 5032b388c67SJoel Beckerconfig OCFS2_DEBUG_MASKLOG 5042b388c67SJoel Becker bool "OCFS2 logging support" 5052b388c67SJoel Becker depends on OCFS2_FS 5062b388c67SJoel Becker default y 5072b388c67SJoel Becker help 5082b388c67SJoel Becker The ocfs2 filesystem has an extensive logging system. The system 5092b388c67SJoel Becker allows selection of events to log via files in /sys/o2cb/logmask/. 5102b388c67SJoel Becker This option will enlarge your kernel, but it allows debugging of 5112b388c67SJoel Becker ocfs2 filesystem issues. 5122b388c67SJoel Becker 5135a58c3efSJan Karaconfig OCFS2_DEBUG_FS 5145a58c3efSJan Kara bool "OCFS2 expensive checks" 5155a58c3efSJan Kara depends on OCFS2_FS 5165a58c3efSJan Kara default n 5175a58c3efSJan Kara help 5185a58c3efSJan Kara This option will enable expensive consistency checks. Enable 5195a58c3efSJan Kara this option for debugging only as it is likely to decrease 5205a58c3efSJan Kara performance of the filesystem. 5215a58c3efSJan Kara 5222b4e30fbSJoel Beckerconfig OCFS2_COMPAT_JBD 5232b4e30fbSJoel Becker bool "Use JBD for compatibility" 5242b4e30fbSJoel Becker depends on OCFS2_FS 5252b4e30fbSJoel Becker default n 5262b4e30fbSJoel Becker select JBD 5272b4e30fbSJoel Becker help 5282b4e30fbSJoel Becker The ocfs2 filesystem now uses JBD2 for its journalling. JBD2 5292b4e30fbSJoel Becker is backwards compatible with JBD. It is safe to say N here. 5302b4e30fbSJoel Becker However, if you really want to use the original JBD, say Y here. 5312b4e30fbSJoel Becker 53225fad945SRandy Dunlapendif # BLOCK 53325fad945SRandy Dunlap 53425fad945SRandy Dunlapconfig DNOTIFY 53525fad945SRandy Dunlap bool "Dnotify support" 53625fad945SRandy Dunlap default y 5371da177e4SLinus Torvalds help 53825fad945SRandy Dunlap Dnotify is a directory-based per-fd file change notification system 53925fad945SRandy Dunlap that uses signals to communicate events to user-space. There exist 54025fad945SRandy Dunlap superior alternatives, but some applications may still rely on 54125fad945SRandy Dunlap dnotify. 5421da177e4SLinus Torvalds 54325fad945SRandy Dunlap If unsure, say Y. 5449361401eSDavid Howells 5450eeca283SRobert Loveconfig INOTIFY 5460eeca283SRobert Love bool "Inotify file change notification support" 5470eeca283SRobert Love default y 5480eeca283SRobert Love ---help--- 5492d9048e2SAmy Griffis Say Y here to enable inotify support. Inotify is a file change 5502d9048e2SAmy Griffis notification system and a replacement for dnotify. Inotify fixes 5512d9048e2SAmy Griffis numerous shortcomings in dnotify and introduces several new features 5522d9048e2SAmy Griffis including multiple file events, one-shot support, and unmount 5533de11748SRobert Love notification. 5543de11748SRobert Love 555e403149cSDirk Hohndel For more information, see <file:Documentation/filesystems/inotify.txt> 5560eeca283SRobert Love 5570eeca283SRobert Love If unsure, say Y. 5580eeca283SRobert Love 5592d9048e2SAmy Griffisconfig INOTIFY_USER 5602d9048e2SAmy Griffis bool "Inotify support for userspace" 5612d9048e2SAmy Griffis depends on INOTIFY 5622d9048e2SAmy Griffis default y 5632d9048e2SAmy Griffis ---help--- 5642d9048e2SAmy Griffis Say Y here to enable inotify support for userspace, including the 5652d9048e2SAmy Griffis associated system calls. Inotify allows monitoring of both files and 5662d9048e2SAmy Griffis directories via a single open fd. Events are read from the file 5672d9048e2SAmy Griffis descriptor, which is also select()- and poll()-able. 5682d9048e2SAmy Griffis 569e403149cSDirk Hohndel For more information, see <file:Documentation/filesystems/inotify.txt> 5702d9048e2SAmy Griffis 5712d9048e2SAmy Griffis If unsure, say Y. 5722d9048e2SAmy Griffis 5731da177e4SLinus Torvaldsconfig QUOTA 5741da177e4SLinus Torvalds bool "Quota support" 5751da177e4SLinus Torvalds help 5761da177e4SLinus Torvalds If you say Y here, you will be able to set per user limits for disk 5771da177e4SLinus Torvalds usage (also called disk quotas). Currently, it works for the 5781da177e4SLinus Torvalds ext2, ext3, and reiserfs file system. ext3 also supports journalled 5791da177e4SLinus Torvalds quotas for which you don't need to run quotacheck(8) after an unclean 580919532a5SAdrian Bunk shutdown. 581919532a5SAdrian Bunk For further details, read the Quota mini-HOWTO, available from 5821da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or the documentation provided 5831da177e4SLinus Torvalds with the quota tools. Probably the quota support is only useful for 5841da177e4SLinus Torvalds multi user systems. If unsure, say N. 5851da177e4SLinus Torvalds 5868e893469SJan Karaconfig QUOTA_NETLINK_INTERFACE 5878e893469SJan Kara bool "Report quota messages through netlink interface" 5888e893469SJan Kara depends on QUOTA && NET 5898e893469SJan Kara help 5908e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5918e893469SJan Kara hardlimit, etc.) will be reported through netlink interface. If unsure, 5928e893469SJan Kara say Y. 5938e893469SJan Kara 5948e893469SJan Karaconfig PRINT_QUOTA_WARNING 5958e893469SJan Kara bool "Print quota warnings to console (OBSOLETE)" 5968e893469SJan Kara depends on QUOTA 5978e893469SJan Kara default y 5988e893469SJan Kara help 5998e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 6008e893469SJan Kara hardlimit, etc.) will be printed to the process' controlling terminal. 6018e893469SJan Kara Note that this behavior is currently deprecated and may go away in 6028e893469SJan Kara future. Please use notification via netlink socket instead. 6038e893469SJan Kara 6041da177e4SLinus Torvaldsconfig QFMT_V1 6051da177e4SLinus Torvalds tristate "Old quota format support" 6061da177e4SLinus Torvalds depends on QUOTA 6071da177e4SLinus Torvalds help 6081da177e4SLinus Torvalds This quota format was (is) used by kernels earlier than 2.4.22. If 6091da177e4SLinus Torvalds you have quota working and you don't want to convert to new quota 6101da177e4SLinus Torvalds format say Y here. 6111da177e4SLinus Torvalds 6121da177e4SLinus Torvaldsconfig QFMT_V2 6131da177e4SLinus Torvalds tristate "Quota format v2 support" 6141da177e4SLinus Torvalds depends on QUOTA 6151da177e4SLinus Torvalds help 6161da177e4SLinus Torvalds This quota format allows using quotas with 32-bit UIDs/GIDs. If you 617919532a5SAdrian Bunk need this functionality say Y here. 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvaldsconfig QUOTACTL 6201da177e4SLinus Torvalds bool 6211da177e4SLinus Torvalds depends on XFS_QUOTA || QUOTA 6221da177e4SLinus Torvalds default y 6231da177e4SLinus Torvalds 6241da177e4SLinus Torvaldsconfig AUTOFS_FS 6251da177e4SLinus Torvalds tristate "Kernel automounter support" 6261da177e4SLinus Torvalds help 6271da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 6281da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 6291da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 6301da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 6311da177e4SLinus Torvalds 6321da177e4SLinus Torvalds To use the automounter you need the user-space tools from the autofs 6331da177e4SLinus Torvalds package; you can find the location in <file:Documentation/Changes>. 6341da177e4SLinus Torvalds You also want to answer Y to "NFS file system support", below. 6351da177e4SLinus Torvalds 6361da177e4SLinus Torvalds If you want to use the newer version of the automounter with more 6371da177e4SLinus Torvalds features, say N here and say Y to "Kernel automounter v4 support", 6381da177e4SLinus Torvalds below. 6391da177e4SLinus Torvalds 6401da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6411da177e4SLinus Torvalds called autofs. 6421da177e4SLinus Torvalds 6431da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network, you 6441da177e4SLinus Torvalds probably do not need an automounter, and can say N here. 6451da177e4SLinus Torvalds 6461da177e4SLinus Torvaldsconfig AUTOFS4_FS 6471da177e4SLinus Torvalds tristate "Kernel automounter version 4 support (also supports v3)" 6481da177e4SLinus Torvalds help 6491da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 6501da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 6511da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 6521da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 6531da177e4SLinus Torvalds 6541da177e4SLinus Torvalds To use the automounter you need the user-space tools from 6551da177e4SLinus Torvalds <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 6561da177e4SLinus Torvalds want to answer Y to "NFS file system support", below. 6571da177e4SLinus Torvalds 6581da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6591da177e4SLinus Torvalds called autofs4. You will need to add "alias autofs autofs4" to your 6601da177e4SLinus Torvalds modules configuration file. 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network or 6631da177e4SLinus Torvalds don't have a laptop which needs to dynamically reconfigure to the 6641da177e4SLinus Torvalds local network, you probably do not need an automounter, and can say 6651da177e4SLinus Torvalds N here. 6661da177e4SLinus Torvalds 66704578f17SMiklos Szerediconfig FUSE_FS 668*37194d07SRobert P. J. Day tristate "FUSE (Filesystem in Userspace) support" 66904578f17SMiklos Szeredi help 67004578f17SMiklos Szeredi With FUSE it is possible to implement a fully functional filesystem 67104578f17SMiklos Szeredi in a userspace program. 67204578f17SMiklos Szeredi 67304578f17SMiklos Szeredi There's also companion library: libfuse. This library along with 67404578f17SMiklos Szeredi utilities is available from the FUSE homepage: 67504578f17SMiklos Szeredi <http://fuse.sourceforge.net/> 67604578f17SMiklos Szeredi 677909021eaSMiklos Szeredi See <file:Documentation/filesystems/fuse.txt> for more information. 678909021eaSMiklos Szeredi See <file:Documentation/Changes> for needed library/utility version. 679909021eaSMiklos Szeredi 68004578f17SMiklos Szeredi If you want to develop a userspace FS, or if you want to use 68104578f17SMiklos Szeredi a filesystem based on FUSE, answer Y or M. 68204578f17SMiklos Szeredi 683f2fbc6c2SRandy Dunlapconfig GENERIC_ACL 684f2fbc6c2SRandy Dunlap bool 685f2fbc6c2SRandy Dunlap select FS_POSIX_ACL 686f2fbc6c2SRandy Dunlap 6879361401eSDavid Howellsif BLOCK 6881da177e4SLinus Torvaldsmenu "CD-ROM/DVD Filesystems" 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvaldsconfig ISO9660_FS 6911da177e4SLinus Torvalds tristate "ISO 9660 CDROM file system support" 6921da177e4SLinus Torvalds help 6931da177e4SLinus Torvalds This is the standard file system used on CD-ROMs. It was previously 6941da177e4SLinus Torvalds known as "High Sierra File System" and is called "hsfs" on other 6951da177e4SLinus Torvalds Unix systems. The so-called Rock-Ridge extensions which allow for 6961da177e4SLinus Torvalds long Unix filenames and symbolic links are also supported by this 6971da177e4SLinus Torvalds driver. If you have a CD-ROM drive and want to do more with it than 6981da177e4SLinus Torvalds just listen to audio CDs and watch its LEDs, say Y (and read 6991da177e4SLinus Torvalds <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 7001da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>), thereby 7011da177e4SLinus Torvalds enlarging your kernel by about 27 KB; otherwise say N. 7021da177e4SLinus Torvalds 7031da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 7041da177e4SLinus Torvalds module will be called isofs. 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvaldsconfig JOLIET 7071da177e4SLinus Torvalds bool "Microsoft Joliet CDROM extensions" 7081da177e4SLinus Torvalds depends on ISO9660_FS 7091da177e4SLinus Torvalds select NLS 7101da177e4SLinus Torvalds help 7111da177e4SLinus Torvalds Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 7121da177e4SLinus Torvalds which allows for long filenames in unicode format (unicode is the 7131da177e4SLinus Torvalds new 16 bit character code, successor to ASCII, which encodes the 7141da177e4SLinus Torvalds characters of almost all languages of the world; see 7151da177e4SLinus Torvalds <http://www.unicode.org/> for more information). Say Y here if you 7161da177e4SLinus Torvalds want to be able to read Joliet CD-ROMs under Linux. 7171da177e4SLinus Torvalds 7181da177e4SLinus Torvaldsconfig ZISOFS 7191da177e4SLinus Torvalds bool "Transparent decompression extension" 7201da177e4SLinus Torvalds depends on ISO9660_FS 7211da177e4SLinus Torvalds select ZLIB_INFLATE 7221da177e4SLinus Torvalds help 7231da177e4SLinus Torvalds This is a Linux-specific extension to RockRidge which lets you store 7241da177e4SLinus Torvalds data in compressed form on a CD-ROM and have it transparently 7251da177e4SLinus Torvalds decompressed when the CD-ROM is accessed. See 7261da177e4SLinus Torvalds <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 7271da177e4SLinus Torvalds necessary to create such a filesystem. Say Y here if you want to be 7281da177e4SLinus Torvalds able to read such compressed CD-ROMs. 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvaldsconfig UDF_FS 7311da177e4SLinus Torvalds tristate "UDF file system support" 732f845fcedSBob Copeland select CRC_ITU_T 7331da177e4SLinus Torvalds help 7341da177e4SLinus Torvalds This is the new file system used on some CD-ROMs and DVDs. Say Y if 7351da177e4SLinus Torvalds you intend to mount DVD discs or CDRW's written in packet mode, or 7361da177e4SLinus Torvalds if written to by other UDF utilities, such as DirectCD. 7371da177e4SLinus Torvalds Please read <file:Documentation/filesystems/udf.txt>. 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 7401da177e4SLinus Torvalds module will be called udf. 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds If unsure, say N. 7431da177e4SLinus Torvalds 7441da177e4SLinus Torvaldsconfig UDF_NLS 7451da177e4SLinus Torvalds bool 7461da177e4SLinus Torvalds default y 7471da177e4SLinus Torvalds depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 7481da177e4SLinus Torvalds 7491da177e4SLinus Torvaldsendmenu 75025fad945SRandy Dunlapendif # BLOCK 7511da177e4SLinus Torvalds 7529361401eSDavid Howellsif BLOCK 7531da177e4SLinus Torvaldsmenu "DOS/FAT/NT Filesystems" 7541da177e4SLinus Torvalds 7551da177e4SLinus Torvaldsconfig FAT_FS 7561da177e4SLinus Torvalds tristate 7571da177e4SLinus Torvalds select NLS 7581da177e4SLinus Torvalds help 7591da177e4SLinus Torvalds If you want to use one of the FAT-based file systems (the MS-DOS and 7601da177e4SLinus Torvalds VFAT (Windows 95) file systems), then you must say Y or M here 7611da177e4SLinus Torvalds to include FAT support. You will then be able to mount partitions or 7621da177e4SLinus Torvalds diskettes with FAT-based file systems and transparently access the 7631da177e4SLinus Torvalds files on them, i.e. MSDOS files will look and behave just like all 7641da177e4SLinus Torvalds other Unix files. 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds This FAT support is not a file system in itself, it only provides 7671da177e4SLinus Torvalds the foundation for the other file systems. You will have to say Y or 7681da177e4SLinus Torvalds M to at least one of "MSDOS fs support" or "VFAT fs support" in 7691da177e4SLinus Torvalds order to make use of it. 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds Another way to read and write MSDOS floppies and hard drive 7721da177e4SLinus Torvalds partitions from within Linux (but not transparently) is with the 7731da177e4SLinus Torvalds mtools ("man mtools") program suite. You don't need to say Y here in 7741da177e4SLinus Torvalds order to do that. 7751da177e4SLinus Torvalds 7761da177e4SLinus Torvalds If you need to move large files on floppies between a DOS and a 7771da177e4SLinus Torvalds Linux box, say Y here, mount the floppy under Linux with an MSDOS 7781da177e4SLinus Torvalds file system and use GNU tar's M option. GNU tar is a program 7791da177e4SLinus Torvalds available for Unix and DOS ("man tar" or "info tar"). 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds The FAT support will enlarge your kernel by about 37 KB. If unsure, 7821da177e4SLinus Torvalds say Y. 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 7851da177e4SLinus Torvalds fat. Note that if you compile the FAT support as a module, you 7861da177e4SLinus Torvalds cannot compile any of the FAT-based file systems into the kernel 7871da177e4SLinus Torvalds -- they will have to be modules as well. 7881da177e4SLinus Torvalds 7891da177e4SLinus Torvaldsconfig MSDOS_FS 7901da177e4SLinus Torvalds tristate "MSDOS fs support" 7911da177e4SLinus Torvalds select FAT_FS 7921da177e4SLinus Torvalds help 7931da177e4SLinus Torvalds This allows you to mount MSDOS partitions of your hard drive (unless 7941da177e4SLinus Torvalds they are compressed; to access compressed MSDOS partitions under 7951da177e4SLinus Torvalds Linux, you can either use the DOS emulator DOSEMU, described in the 7961da177e4SLinus Torvalds DOSEMU-HOWTO, available from 7971da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 7981da177e4SLinus Torvalds <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 7991da177e4SLinus Torvalds intend to use dosemu with a non-compressed MSDOS partition, say Y 8001da177e4SLinus Torvalds here) and MSDOS floppies. This means that file access becomes 8011da177e4SLinus Torvalds transparent, i.e. the MSDOS files look and behave just like all 8021da177e4SLinus Torvalds other Unix files. 8031da177e4SLinus Torvalds 8041da177e4SLinus Torvalds If you have Windows 95 or Windows NT installed on your MSDOS 8051da177e4SLinus Torvalds partitions, you should use the VFAT file system (say Y to "VFAT fs 8061da177e4SLinus Torvalds support" below), or you will not be able to see the long filenames 8071da177e4SLinus Torvalds generated by Windows 95 / Windows NT. 8081da177e4SLinus Torvalds 8091da177e4SLinus Torvalds This option will enlarge your kernel by about 7 KB. If unsure, 8101da177e4SLinus Torvalds answer Y. This will only work if you said Y to "DOS FAT fs support" 8111da177e4SLinus Torvalds as well. To compile this as a module, choose M here: the module will 8121da177e4SLinus Torvalds be called msdos. 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvaldsconfig VFAT_FS 8151da177e4SLinus Torvalds tristate "VFAT (Windows-95) fs support" 8161da177e4SLinus Torvalds select FAT_FS 8171da177e4SLinus Torvalds help 8181da177e4SLinus Torvalds This option provides support for normal Windows file systems with 8191da177e4SLinus Torvalds long filenames. That includes non-compressed FAT-based file systems 8201da177e4SLinus Torvalds used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 8211da177e4SLinus Torvalds programs from the mtools package. 8221da177e4SLinus Torvalds 8231da177e4SLinus Torvalds The VFAT support enlarges your kernel by about 10 KB and it only 8241da177e4SLinus Torvalds works if you said Y to the "DOS FAT fs support" above. Please read 8251da177e4SLinus Torvalds the file <file:Documentation/filesystems/vfat.txt> for details. If 8261da177e4SLinus Torvalds unsure, say Y. 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 8291da177e4SLinus Torvalds vfat. 8301da177e4SLinus Torvalds 8311da177e4SLinus Torvaldsconfig FAT_DEFAULT_CODEPAGE 8321da177e4SLinus Torvalds int "Default codepage for FAT" 8331da177e4SLinus Torvalds depends on MSDOS_FS || VFAT_FS 8341da177e4SLinus Torvalds default 437 8351da177e4SLinus Torvalds help 8361da177e4SLinus Torvalds This option should be set to the codepage of your FAT filesystems. 8371da177e4SLinus Torvalds It can be overridden with the "codepage" mount option. 8381da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8391da177e4SLinus Torvalds 8401da177e4SLinus Torvaldsconfig FAT_DEFAULT_IOCHARSET 8411da177e4SLinus Torvalds string "Default iocharset for FAT" 8421da177e4SLinus Torvalds depends on VFAT_FS 8431da177e4SLinus Torvalds default "iso8859-1" 8441da177e4SLinus Torvalds help 8451da177e4SLinus Torvalds Set this to the default input/output character set you'd 8461da177e4SLinus Torvalds like FAT to use. It should probably match the character set 8471da177e4SLinus Torvalds that most of your FAT filesystems use, and can be overridden 8481da177e4SLinus Torvalds with the "iocharset" mount option for FAT filesystems. 8491da177e4SLinus Torvalds Note that "utf8" is not recommended for FAT filesystems. 8501da177e4SLinus Torvalds If unsure, you shouldn't set "utf8" here. 8511da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8521da177e4SLinus Torvalds 8531da177e4SLinus Torvaldsconfig NTFS_FS 8541da177e4SLinus Torvalds tristate "NTFS file system support" 8551da177e4SLinus Torvalds select NLS 8561da177e4SLinus Torvalds help 8571da177e4SLinus Torvalds NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 8581da177e4SLinus Torvalds 8591da177e4SLinus Torvalds Saying Y or M here enables read support. There is partial, but 8601da177e4SLinus Torvalds safe, write support available. For write support you must also 8611da177e4SLinus Torvalds say Y to "NTFS write support" below. 8621da177e4SLinus Torvalds 8631da177e4SLinus Torvalds There are also a number of user-space tools available, called 8641da177e4SLinus Torvalds ntfsprogs. These include ntfsundelete and ntfsresize, that work 8651da177e4SLinus Torvalds without NTFS support enabled in the kernel. 8661da177e4SLinus Torvalds 8671da177e4SLinus Torvalds This is a rewrite from scratch of Linux NTFS support and replaced 8681da177e4SLinus Torvalds the old NTFS code starting with Linux 2.5.11. A backport to 8691da177e4SLinus Torvalds the Linux 2.4 kernel series is separately available as a patch 8701da177e4SLinus Torvalds from the project web site. 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds For more information see <file:Documentation/filesystems/ntfs.txt> 873337e2ab5SJess Guerrero and <http://www.linux-ntfs.org/>. 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 8761da177e4SLinus Torvalds module will be called ntfs. 8771da177e4SLinus Torvalds 8781da177e4SLinus Torvalds If you are not using Windows NT, 2000, XP or 2003 in addition to 8791da177e4SLinus Torvalds Linux on your computer it is safe to say N. 8801da177e4SLinus Torvalds 8811da177e4SLinus Torvaldsconfig NTFS_DEBUG 8821da177e4SLinus Torvalds bool "NTFS debugging support" 8831da177e4SLinus Torvalds depends on NTFS_FS 8841da177e4SLinus Torvalds help 8851da177e4SLinus Torvalds If you are experiencing any problems with the NTFS file system, say 8861da177e4SLinus Torvalds Y here. This will result in additional consistency checks to be 8871da177e4SLinus Torvalds performed by the driver as well as additional debugging messages to 8881da177e4SLinus Torvalds be written to the system log. Note that debugging messages are 8891da177e4SLinus Torvalds disabled by default. To enable them, supply the option debug_msgs=1 8901da177e4SLinus Torvalds at the kernel command line when booting the kernel or as an option 8911da177e4SLinus Torvalds to insmod when loading the ntfs module. Once the driver is active, 8921da177e4SLinus Torvalds you can enable debugging messages by doing (as root): 8931da177e4SLinus Torvalds echo 1 > /proc/sys/fs/ntfs-debug 8941da177e4SLinus Torvalds Replacing the "1" with "0" would disable debug messages. 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds If you leave debugging messages disabled, this results in little 8971da177e4SLinus Torvalds overhead, but enabling debug messages results in very significant 8981da177e4SLinus Torvalds slowdown of the system. 8991da177e4SLinus Torvalds 9001da177e4SLinus Torvalds When reporting bugs, please try to have available a full dump of 9011da177e4SLinus Torvalds debugging messages while the misbehaviour was occurring. 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvaldsconfig NTFS_RW 9041da177e4SLinus Torvalds bool "NTFS write support" 9051da177e4SLinus Torvalds depends on NTFS_FS 9061da177e4SLinus Torvalds help 9071da177e4SLinus Torvalds This enables the partial, but safe, write support in the NTFS driver. 9081da177e4SLinus Torvalds 9091da177e4SLinus Torvalds The only supported operation is overwriting existing files, without 9101da177e4SLinus Torvalds changing the file length. No file or directory creation, deletion or 9111da177e4SLinus Torvalds renaming is possible. Note only non-resident files can be written to 9121da177e4SLinus Torvalds so you may find that some very small files (<500 bytes or so) cannot 9131da177e4SLinus Torvalds be written to. 9141da177e4SLinus Torvalds 9151da177e4SLinus Torvalds While we cannot guarantee that it will not damage any data, we have 9161da177e4SLinus Torvalds so far not received a single report where the driver would have 9171da177e4SLinus Torvalds damaged someones data so we assume it is perfectly safe to use. 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds Note: While write support is safe in this version (a rewrite from 9201da177e4SLinus Torvalds scratch of the NTFS support), it should be noted that the old NTFS 9211da177e4SLinus Torvalds write support, included in Linux 2.5.10 and before (since 1997), 9221da177e4SLinus Torvalds is not safe. 9231da177e4SLinus Torvalds 9241da177e4SLinus Torvalds This is currently useful with TopologiLinux. TopologiLinux is run 9251da177e4SLinus Torvalds on top of any DOS/Microsoft Windows system without partitioning your 9261da177e4SLinus Torvalds hard disk. Unlike other Linux distributions TopologiLinux does not 9271da177e4SLinus Torvalds need its own partition. For more information see 9281da177e4SLinus Torvalds <http://topologi-linux.sourceforge.net/> 9291da177e4SLinus Torvalds 9301da177e4SLinus Torvalds It is perfectly safe to say N here. 9311da177e4SLinus Torvalds 9321da177e4SLinus Torvaldsendmenu 93325fad945SRandy Dunlapendif # BLOCK 9341da177e4SLinus Torvalds 9351da177e4SLinus Torvaldsmenu "Pseudo filesystems" 9361da177e4SLinus Torvalds 9376eedf8d3SAlexey Dobriyansource "fs/proc/Kconfig" 938b89a8171SEric W. Biederman 9391da177e4SLinus Torvaldsconfig SYSFS 9401da177e4SLinus Torvalds bool "sysfs file system support" if EMBEDDED 9411da177e4SLinus Torvalds default y 9421da177e4SLinus Torvalds help 9431da177e4SLinus Torvalds The sysfs filesystem is a virtual filesystem that the kernel uses to 9441da177e4SLinus Torvalds export internal kernel objects, their attributes, and their 9451da177e4SLinus Torvalds relationships to one another. 9461da177e4SLinus Torvalds 9471da177e4SLinus Torvalds Users can use sysfs to ascertain useful information about the running 9481da177e4SLinus Torvalds kernel, such as the devices the kernel has discovered on each bus and 9491da177e4SLinus Torvalds which driver each is bound to. sysfs can also be used to tune devices 9501da177e4SLinus Torvalds and other kernel subsystems. 9511da177e4SLinus Torvalds 9521da177e4SLinus Torvalds Some system agents rely on the information in sysfs to operate. 9531da177e4SLinus Torvalds /sbin/hotplug uses device and object attributes in sysfs to assist in 95403a67a46SJan Engelhardt delegating policy decisions, like persistently naming devices. 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds sysfs is currently used by the block subsystem to mount the root 9571da177e4SLinus Torvalds partition. If sysfs is disabled you must specify the boot device on 9581da177e4SLinus Torvalds the kernel boot command line via its major and minor numbers. For 9591da177e4SLinus Torvalds example, "root=03:01" for /dev/hda1. 9601da177e4SLinus Torvalds 9611da177e4SLinus Torvalds Designers of embedded systems may wish to say N here to conserve space. 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvaldsconfig TMPFS 9641da177e4SLinus Torvalds bool "Virtual memory file system support (former shm fs)" 9651da177e4SLinus Torvalds help 9661da177e4SLinus Torvalds Tmpfs is a file system which keeps all files in virtual memory. 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvalds Everything in tmpfs is temporary in the sense that no files will be 9691da177e4SLinus Torvalds created on your hard drive. The files live in memory and swap 9701da177e4SLinus Torvalds space. If you unmount a tmpfs instance, everything stored therein is 9711da177e4SLinus Torvalds lost. 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds See <file:Documentation/filesystems/tmpfs.txt> for details. 9741da177e4SLinus Torvalds 97539f0247dSAndreas Gruenbacherconfig TMPFS_POSIX_ACL 97639f0247dSAndreas Gruenbacher bool "Tmpfs POSIX Access Control Lists" 97739f0247dSAndreas Gruenbacher depends on TMPFS 97839f0247dSAndreas Gruenbacher select GENERIC_ACL 97939f0247dSAndreas Gruenbacher help 98039f0247dSAndreas Gruenbacher POSIX Access Control Lists (ACLs) support permissions for users and 98139f0247dSAndreas Gruenbacher groups beyond the owner/group/world scheme. 98239f0247dSAndreas Gruenbacher 98339f0247dSAndreas Gruenbacher To learn more about Access Control Lists, visit the POSIX ACLs for 98439f0247dSAndreas Gruenbacher Linux website <http://acl.bestbits.at/>. 98539f0247dSAndreas Gruenbacher 98639f0247dSAndreas Gruenbacher If you don't know what Access Control Lists are, say N. 98739f0247dSAndreas Gruenbacher 9881da177e4SLinus Torvaldsconfig HUGETLBFS 9891da177e4SLinus Torvalds bool "HugeTLB file system support" 99053492b1dSGerald Schaefer depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \ 99153492b1dSGerald Schaefer (S390 && 64BIT) || BROKEN 992dda27d1aSArthur Othieno help 993dda27d1aSArthur Othieno hugetlbfs is a filesystem backing for HugeTLB pages, based on 994dda27d1aSArthur Othieno ramfs. For architectures that support it, say Y here and read 995dda27d1aSArthur Othieno <file:Documentation/vm/hugetlbpage.txt> for details. 996dda27d1aSArthur Othieno 997dda27d1aSArthur Othieno If unsure, say N. 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvaldsconfig HUGETLB_PAGE 10001da177e4SLinus Torvalds def_bool HUGETLBFS 10011da177e4SLinus Torvalds 10027063fbf2SJoel Beckerconfig CONFIGFS_FS 100302ac0499SJoel Becker tristate "Userspace-driven configuration filesystem" 100402ac0499SJoel Becker depends on SYSFS 10057063fbf2SJoel Becker help 10067063fbf2SJoel Becker configfs is a ram-based filesystem that provides the converse 10077063fbf2SJoel Becker of sysfs's functionality. Where sysfs is a filesystem-based 10087063fbf2SJoel Becker view of kernel objects, configfs is a filesystem-based manager 10097063fbf2SJoel Becker of kernel objects, or config_items. 10107063fbf2SJoel Becker 10117063fbf2SJoel Becker Both sysfs and configfs can and should exist together on the 10127063fbf2SJoel Becker same system. One is not a replacement for the other. 10137063fbf2SJoel Becker 10141da177e4SLinus Torvaldsendmenu 10151da177e4SLinus Torvalds 10161da177e4SLinus Torvaldsmenu "Miscellaneous filesystems" 10171da177e4SLinus Torvalds 10181da177e4SLinus Torvaldsconfig ADFS_FS 10191da177e4SLinus Torvalds tristate "ADFS file system support (EXPERIMENTAL)" 10209361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10211da177e4SLinus Torvalds help 10221da177e4SLinus Torvalds The Acorn Disc Filing System is the standard file system of the 10231da177e4SLinus Torvalds RiscOS operating system which runs on Acorn's ARM-based Risc PC 10241da177e4SLinus Torvalds systems and the Acorn Archimedes range of machines. If you say Y 10251da177e4SLinus Torvalds here, Linux will be able to read from ADFS partitions on hard drives 10261da177e4SLinus Torvalds and from ADFS-formatted floppy discs. If you also want to be able to 10271da177e4SLinus Torvalds write to those devices, say Y to "ADFS write support" below. 10281da177e4SLinus Torvalds 10291da177e4SLinus Torvalds The ADFS partition should be the first partition (i.e., 10301da177e4SLinus Torvalds /dev/[hs]d?1) on each of your drives. Please read the file 10311da177e4SLinus Torvalds <file:Documentation/filesystems/adfs.txt> for further details. 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds To compile this code as a module, choose M here: the module will be 10341da177e4SLinus Torvalds called adfs. 10351da177e4SLinus Torvalds 10361da177e4SLinus Torvalds If unsure, say N. 10371da177e4SLinus Torvalds 10381da177e4SLinus Torvaldsconfig ADFS_FS_RW 10391da177e4SLinus Torvalds bool "ADFS write support (DANGEROUS)" 10401da177e4SLinus Torvalds depends on ADFS_FS 10411da177e4SLinus Torvalds help 10421da177e4SLinus Torvalds If you say Y here, you will be able to write to ADFS partitions on 10431da177e4SLinus Torvalds hard drives and ADFS-formatted floppy disks. This is experimental 10441da177e4SLinus Torvalds codes, so if you're unsure, say N. 10451da177e4SLinus Torvalds 10461da177e4SLinus Torvaldsconfig AFFS_FS 10471da177e4SLinus Torvalds tristate "Amiga FFS file system support (EXPERIMENTAL)" 10489361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10491da177e4SLinus Torvalds help 10501da177e4SLinus Torvalds The Fast File System (FFS) is the common file system used on hard 10511da177e4SLinus Torvalds disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 10521da177e4SLinus Torvalds if you want to be able to read and write files from and to an Amiga 10531da177e4SLinus Torvalds FFS partition on your hard drive. Amiga floppies however cannot be 10541da177e4SLinus Torvalds read with this driver due to an incompatibility of the floppy 10551da177e4SLinus Torvalds controller used in an Amiga and the standard floppy controller in 10561da177e4SLinus Torvalds PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 10571da177e4SLinus Torvalds and <file:fs/affs/Changes>. 10581da177e4SLinus Torvalds 10591da177e4SLinus Torvalds With this driver you can also mount disk files used by Bernd 10601da177e4SLinus Torvalds Schmidt's Un*X Amiga Emulator 10611da177e4SLinus Torvalds (<http://www.freiburg.linux.de/~uae/>). 10621da177e4SLinus Torvalds If you want to do this, you will also need to say Y or M to "Loop 10631da177e4SLinus Torvalds device support", above. 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 10661da177e4SLinus Torvalds module will be called affs. If unsure, say N. 10671da177e4SLinus Torvalds 1068237fead6SMichael Halcrowconfig ECRYPT_FS 1069237fead6SMichael Halcrow tristate "eCrypt filesystem layer support (EXPERIMENTAL)" 107088b4a07eSMichael Halcrow depends on EXPERIMENTAL && KEYS && CRYPTO && NET 1071237fead6SMichael Halcrow help 1072237fead6SMichael Halcrow Encrypted filesystem that operates on the VFS layer. See 1073e403149cSDirk Hohndel <file:Documentation/filesystems/ecryptfs.txt> to learn more about 1074237fead6SMichael Halcrow eCryptfs. Userspace components are required and can be 1075237fead6SMichael Halcrow obtained from <http://ecryptfs.sf.net>. 1076237fead6SMichael Halcrow 1077237fead6SMichael Halcrow To compile this file system support as a module, choose M here: the 1078237fead6SMichael Halcrow module will be called ecryptfs. 1079237fead6SMichael Halcrow 10801da177e4SLinus Torvaldsconfig HFS_FS 10811da177e4SLinus Torvalds tristate "Apple Macintosh file system support (EXPERIMENTAL)" 10829361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 1083878129a3SLennert Buytenhek select NLS 10841da177e4SLinus Torvalds help 10851da177e4SLinus Torvalds If you say Y here, you will be able to mount Macintosh-formatted 10861da177e4SLinus Torvalds floppy disks and hard drive partitions with full read-write access. 1087889c94a1SJohann Felix Soden Please read <file:Documentation/filesystems/hfs.txt> to learn about 1088889c94a1SJohann Felix Soden the available mount options. 10891da177e4SLinus Torvalds 10901da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 10911da177e4SLinus Torvalds module will be called hfs. 10921da177e4SLinus Torvalds 10931da177e4SLinus Torvaldsconfig HFSPLUS_FS 10941da177e4SLinus Torvalds tristate "Apple Extended HFS file system support" 10959361401eSDavid Howells depends on BLOCK 10961da177e4SLinus Torvalds select NLS 10971da177e4SLinus Torvalds select NLS_UTF8 10981da177e4SLinus Torvalds help 10991da177e4SLinus Torvalds If you say Y here, you will be able to mount extended format 11001da177e4SLinus Torvalds Macintosh-formatted hard drive partitions with full read-write access. 11011da177e4SLinus Torvalds 11021da177e4SLinus Torvalds This file system is often called HFS+ and was introduced with 11031da177e4SLinus Torvalds MacOS 8. It includes all Mac specific filesystem data such as 11041da177e4SLinus Torvalds data forks and creator codes, but it also has several UNIX 11051da177e4SLinus Torvalds style features such as file ownership and permissions. 11061da177e4SLinus Torvalds 11071da177e4SLinus Torvaldsconfig BEFS_FS 11081da177e4SLinus Torvalds tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 11099361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11101da177e4SLinus Torvalds select NLS 11111da177e4SLinus Torvalds help 11121da177e4SLinus Torvalds The BeOS File System (BeFS) is the native file system of Be, Inc's 11131da177e4SLinus Torvalds BeOS. Notable features include support for arbitrary attributes 11143cb2fcccSMatt LaPlante on files and directories, and database-like indices on selected 11151da177e4SLinus Torvalds attributes. (Also note that this driver doesn't make those features 11161da177e4SLinus Torvalds available at this time). It is a 64 bit filesystem, so it supports 111744c09201SMatt LaPlante extremely large volumes and files. 11181da177e4SLinus Torvalds 11191da177e4SLinus Torvalds If you use this filesystem, you should also say Y to at least one 11201da177e4SLinus Torvalds of the NLS (native language support) options below. 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds If you don't know what this is about, say N. 11231da177e4SLinus Torvalds 11241da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 11251da177e4SLinus Torvalds called befs. 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvaldsconfig BEFS_DEBUG 11281da177e4SLinus Torvalds bool "Debug BeFS" 11291da177e4SLinus Torvalds depends on BEFS_FS 11301da177e4SLinus Torvalds help 11311da177e4SLinus Torvalds If you say Y here, you can use the 'debug' mount option to enable 11321da177e4SLinus Torvalds debugging output from the driver. 11331da177e4SLinus Torvalds 11341da177e4SLinus Torvaldsconfig BFS_FS 11351da177e4SLinus Torvalds tristate "BFS file system support (EXPERIMENTAL)" 11369361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11371da177e4SLinus Torvalds help 11381da177e4SLinus Torvalds Boot File System (BFS) is a file system used under SCO UnixWare to 11391da177e4SLinus Torvalds allow the bootloader access to the kernel image and other important 11401da177e4SLinus Torvalds files during the boot process. It is usually mounted under /stand 11411da177e4SLinus Torvalds and corresponds to the slice marked as "STAND" in the UnixWare 11421da177e4SLinus Torvalds partition. You should say Y if you want to read or write the files 11431da177e4SLinus Torvalds on your /stand slice from within Linux. You then also need to say Y 11441da177e4SLinus Torvalds to "UnixWare slices support", below. More information about the BFS 11451da177e4SLinus Torvalds file system is contained in the file 11461da177e4SLinus Torvalds <file:Documentation/filesystems/bfs.txt>. 11471da177e4SLinus Torvalds 11481da177e4SLinus Torvalds If you don't know what this is about, say N. 11491da177e4SLinus Torvalds 11501da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 11511da177e4SLinus Torvalds bfs. Note that the file system of your root partition (the one 11521da177e4SLinus Torvalds containing the directory /) cannot be compiled as a module. 11531da177e4SLinus Torvalds 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvalds 11561da177e4SLinus Torvaldsconfig EFS_FS 11571da177e4SLinus Torvalds tristate "EFS file system support (read only) (EXPERIMENTAL)" 11589361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11591da177e4SLinus Torvalds help 11601da177e4SLinus Torvalds EFS is an older file system used for non-ISO9660 CD-ROMs and hard 11611da177e4SLinus Torvalds disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 11621da177e4SLinus Torvalds uses the XFS file system for hard disk partitions however). 11631da177e4SLinus Torvalds 11641da177e4SLinus Torvalds This implementation only offers read-only access. If you don't know 11651da177e4SLinus Torvalds what all this is about, it's safe to say N. For more information 11661da177e4SLinus Torvalds about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 11671da177e4SLinus Torvalds 11681da177e4SLinus Torvalds To compile the EFS file system support as a module, choose M here: the 11691da177e4SLinus Torvalds module will be called efs. 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvaldsconfig JFFS2_FS 11721da177e4SLinus Torvalds tristate "Journalling Flash File System v2 (JFFS2) support" 11731da177e4SLinus Torvalds select CRC32 11741da177e4SLinus Torvalds depends on MTD 11751da177e4SLinus Torvalds help 11761da177e4SLinus Torvalds JFFS2 is the second generation of the Journalling Flash File System 11771da177e4SLinus Torvalds for use on diskless embedded devices. It provides improved wear 11781da177e4SLinus Torvalds levelling, compression and support for hard links. You cannot use 11791da177e4SLinus Torvalds this on normal block devices, only on 'MTD' devices. 11801da177e4SLinus Torvalds 11811da177e4SLinus Torvalds Further information on the design and implementation of JFFS2 is 11821da177e4SLinus Torvalds available at <http://sources.redhat.com/jffs2/>. 11831da177e4SLinus Torvalds 11841da177e4SLinus Torvaldsconfig JFFS2_FS_DEBUG 11851da177e4SLinus Torvalds int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 11861da177e4SLinus Torvalds depends on JFFS2_FS 11871da177e4SLinus Torvalds default "0" 11881da177e4SLinus Torvalds help 11891da177e4SLinus Torvalds This controls the amount of debugging messages produced by the JFFS2 11901da177e4SLinus Torvalds code. Set it to zero for use in production systems. For evaluation, 11911da177e4SLinus Torvalds testing and debugging, it's advisable to set it to one. This will 11921da177e4SLinus Torvalds enable a few assertions and will print debugging messages at the 11931da177e4SLinus Torvalds KERN_DEBUG loglevel, where they won't normally be visible. Level 2 11941da177e4SLinus Torvalds is unlikely to be useful - it enables extra debugging in certain 11951da177e4SLinus Torvalds areas which at one point needed debugging, but when the bugs were 11961da177e4SLinus Torvalds located and fixed, the detailed messages were relegated to level 2. 11971da177e4SLinus Torvalds 11981da177e4SLinus Torvalds If reporting bugs, please try to have available a full dump of the 11991da177e4SLinus Torvalds messages at debug level 1 while the misbehaviour was occurring. 12001da177e4SLinus Torvalds 12012ba72cb7SDavid Woodhouseconfig JFFS2_FS_WRITEBUFFER 12022ba72cb7SDavid Woodhouse bool "JFFS2 write-buffering support" 1203aa98d7cfSKaiGai Kohei depends on JFFS2_FS 12042ba72cb7SDavid Woodhouse default y 12052ba72cb7SDavid Woodhouse help 12062ba72cb7SDavid Woodhouse This enables the write-buffering support in JFFS2. 12072ba72cb7SDavid Woodhouse 12082ba72cb7SDavid Woodhouse This functionality is required to support JFFS2 on the following 12092ba72cb7SDavid Woodhouse types of flash devices: 12102ba72cb7SDavid Woodhouse - NAND flash 12112ba72cb7SDavid Woodhouse - NOR flash with transparent ECC 12122ba72cb7SDavid Woodhouse - DataFlash 12132ba72cb7SDavid Woodhouse 1214a6bc432eSDavid Woodhouseconfig JFFS2_FS_WBUF_VERIFY 1215a6bc432eSDavid Woodhouse bool "Verify JFFS2 write-buffer reads" 1216a6bc432eSDavid Woodhouse depends on JFFS2_FS_WRITEBUFFER 1217a6bc432eSDavid Woodhouse default n 1218a6bc432eSDavid Woodhouse help 1219a6bc432eSDavid Woodhouse This causes JFFS2 to read back every page written through the 1220a6bc432eSDavid Woodhouse write-buffer, and check for errors. 1221a6bc432eSDavid Woodhouse 12222ba72cb7SDavid Woodhouseconfig JFFS2_SUMMARY 12232ba72cb7SDavid Woodhouse bool "JFFS2 summary support (EXPERIMENTAL)" 12242ba72cb7SDavid Woodhouse depends on JFFS2_FS && EXPERIMENTAL 12252ba72cb7SDavid Woodhouse default n 12262ba72cb7SDavid Woodhouse help 12272ba72cb7SDavid Woodhouse This feature makes it possible to use summary information 12282ba72cb7SDavid Woodhouse for faster filesystem mount. 12292ba72cb7SDavid Woodhouse 12302ba72cb7SDavid Woodhouse The summary information can be inserted into a filesystem image 12312ba72cb7SDavid Woodhouse by the utility 'sumtool'. 12322ba72cb7SDavid Woodhouse 12332ba72cb7SDavid Woodhouse If unsure, say 'N'. 12342ba72cb7SDavid Woodhouse 12352ba72cb7SDavid Woodhouseconfig JFFS2_FS_XATTR 12362ba72cb7SDavid Woodhouse bool "JFFS2 XATTR support (EXPERIMENTAL)" 123704510deeSKaiGai Kohei depends on JFFS2_FS && EXPERIMENTAL 1238aa98d7cfSKaiGai Kohei default n 1239aa98d7cfSKaiGai Kohei help 1240aa98d7cfSKaiGai Kohei Extended attributes are name:value pairs associated with inodes by 1241aa98d7cfSKaiGai Kohei the kernel or by users (see the attr(5) manual page, or visit 1242aa98d7cfSKaiGai Kohei <http://acl.bestbits.at/> for details). 1243aa98d7cfSKaiGai Kohei 1244aa98d7cfSKaiGai Kohei If unsure, say N. 1245aa98d7cfSKaiGai Kohei 1246aa98d7cfSKaiGai Koheiconfig JFFS2_FS_POSIX_ACL 1247aa98d7cfSKaiGai Kohei bool "JFFS2 POSIX Access Control Lists" 1248aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1249aa98d7cfSKaiGai Kohei default y 1250aa98d7cfSKaiGai Kohei select FS_POSIX_ACL 1251aa98d7cfSKaiGai Kohei help 1252aa98d7cfSKaiGai Kohei Posix Access Control Lists (ACLs) support permissions for users and 1253aa98d7cfSKaiGai Kohei groups beyond the owner/group/world scheme. 1254aa98d7cfSKaiGai Kohei 1255aa98d7cfSKaiGai Kohei To learn more about Access Control Lists, visit the Posix ACLs for 1256aa98d7cfSKaiGai Kohei Linux website <http://acl.bestbits.at/>. 1257aa98d7cfSKaiGai Kohei 1258aa98d7cfSKaiGai Kohei If you don't know what Access Control Lists are, say N 1259aa98d7cfSKaiGai Kohei 1260aa98d7cfSKaiGai Koheiconfig JFFS2_FS_SECURITY 1261aa98d7cfSKaiGai Kohei bool "JFFS2 Security Labels" 1262aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1263aa98d7cfSKaiGai Kohei default y 1264aa98d7cfSKaiGai Kohei help 1265aa98d7cfSKaiGai Kohei Security labels support alternative access control models 1266aa98d7cfSKaiGai Kohei implemented by security modules like SELinux. This option 1267aa98d7cfSKaiGai Kohei enables an extended attribute handler for file security 1268aa98d7cfSKaiGai Kohei labels in the jffs2 filesystem. 1269aa98d7cfSKaiGai Kohei 1270aa98d7cfSKaiGai Kohei If you are not using a security module that requires using 1271aa98d7cfSKaiGai Kohei extended attributes for file security labels, say N. 1272aa98d7cfSKaiGai Kohei 12731da177e4SLinus Torvaldsconfig JFFS2_COMPRESSION_OPTIONS 12741da177e4SLinus Torvalds bool "Advanced compression options for JFFS2" 12751da177e4SLinus Torvalds depends on JFFS2_FS 12761da177e4SLinus Torvalds default n 12771da177e4SLinus Torvalds help 12781da177e4SLinus Torvalds Enabling this option allows you to explicitly choose which 12791da177e4SLinus Torvalds compression modules, if any, are enabled in JFFS2. Removing 12809e2de407SUwe Kleine-König compressors can mean you cannot read existing file systems, 12811da177e4SLinus Torvalds and enabling experimental compressors can mean that you 12821da177e4SLinus Torvalds write a file system which cannot be read by a standard kernel. 12831da177e4SLinus Torvalds 12841da177e4SLinus Torvalds If unsure, you should _definitely_ say 'N'. 12851da177e4SLinus Torvalds 12861da177e4SLinus Torvaldsconfig JFFS2_ZLIB 12871da177e4SLinus Torvalds bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 12881da177e4SLinus Torvalds select ZLIB_INFLATE 12891da177e4SLinus Torvalds select ZLIB_DEFLATE 12901da177e4SLinus Torvalds depends on JFFS2_FS 12911da177e4SLinus Torvalds default y 12921da177e4SLinus Torvalds help 12931da177e4SLinus Torvalds Zlib is designed to be a free, general-purpose, legally unencumbered, 12941da177e4SLinus Torvalds lossless data-compression library for use on virtually any computer 12951da177e4SLinus Torvalds hardware and operating system. See <http://www.gzip.org/zlib/> for 12961da177e4SLinus Torvalds further information. 12971da177e4SLinus Torvalds 12981da177e4SLinus Torvalds Say 'Y' if unsure. 12991da177e4SLinus Torvalds 1300c799aca3SRichard Purdieconfig JFFS2_LZO 1301c799aca3SRichard Purdie bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS 1302c799aca3SRichard Purdie select LZO_COMPRESS 1303c799aca3SRichard Purdie select LZO_DECOMPRESS 1304c799aca3SRichard Purdie depends on JFFS2_FS 13053ca135e1SDavid Woodhouse default n 1306c799aca3SRichard Purdie help 1307c799aca3SRichard Purdie minilzo-based compression. Generally works better than Zlib. 1308c799aca3SRichard Purdie 13093ca135e1SDavid Woodhouse This feature was added in July, 2007. Say 'N' if you need 13103ca135e1SDavid Woodhouse compatibility with older bootloaders or kernels. 1311c799aca3SRichard Purdie 13121da177e4SLinus Torvaldsconfig JFFS2_RTIME 13131da177e4SLinus Torvalds bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 13141da177e4SLinus Torvalds depends on JFFS2_FS 13151da177e4SLinus Torvalds default y 13161da177e4SLinus Torvalds help 13171da177e4SLinus Torvalds Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 13181da177e4SLinus Torvalds 13191da177e4SLinus Torvaldsconfig JFFS2_RUBIN 13201da177e4SLinus Torvalds bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 13211da177e4SLinus Torvalds depends on JFFS2_FS 13221da177e4SLinus Torvalds default n 13231da177e4SLinus Torvalds help 13241da177e4SLinus Torvalds RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 13251da177e4SLinus Torvalds 13261da177e4SLinus Torvaldschoice 13271da177e4SLinus Torvalds prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 13281da177e4SLinus Torvalds default JFFS2_CMODE_PRIORITY 13291da177e4SLinus Torvalds depends on JFFS2_FS 13301da177e4SLinus Torvalds help 13311da177e4SLinus Torvalds You can set here the default compression mode of JFFS2 from 13321da177e4SLinus Torvalds the available compression modes. Don't touch if unsure. 13331da177e4SLinus Torvalds 13341da177e4SLinus Torvaldsconfig JFFS2_CMODE_NONE 13351da177e4SLinus Torvalds bool "no compression" 13361da177e4SLinus Torvalds help 13371da177e4SLinus Torvalds Uses no compression. 13381da177e4SLinus Torvalds 13391da177e4SLinus Torvaldsconfig JFFS2_CMODE_PRIORITY 13401da177e4SLinus Torvalds bool "priority" 13411da177e4SLinus Torvalds help 1342cc2e2767SMatt LaPlante Tries the compressors in a predefined order and chooses the first 13431da177e4SLinus Torvalds successful one. 13441da177e4SLinus Torvalds 13451da177e4SLinus Torvaldsconfig JFFS2_CMODE_SIZE 13461da177e4SLinus Torvalds bool "size (EXPERIMENTAL)" 13471da177e4SLinus Torvalds help 13481da177e4SLinus Torvalds Tries all compressors and chooses the one which has the smallest 13491da177e4SLinus Torvalds result. 13501da177e4SLinus Torvalds 13513b23c1f5SRichard Purdieconfig JFFS2_CMODE_FAVOURLZO 13523b23c1f5SRichard Purdie bool "Favour LZO" 13533b23c1f5SRichard Purdie help 13543b23c1f5SRichard Purdie Tries all compressors and chooses the one which has the smallest 13553b23c1f5SRichard Purdie result but gives some preference to LZO (which has faster 13563b23c1f5SRichard Purdie decompression) at the expense of size. 13573b23c1f5SRichard Purdie 13581da177e4SLinus Torvaldsendchoice 13591da177e4SLinus Torvalds 13600d7eff87SArtem Bityutskiy# UBIFS File system configuration 13610d7eff87SArtem Bityutskiysource "fs/ubifs/Kconfig" 13620d7eff87SArtem Bityutskiy 13631da177e4SLinus Torvaldsconfig CRAMFS 13641da177e4SLinus Torvalds tristate "Compressed ROM file system support (cramfs)" 13659361401eSDavid Howells depends on BLOCK 13661da177e4SLinus Torvalds select ZLIB_INFLATE 13671da177e4SLinus Torvalds help 13681da177e4SLinus Torvalds Saying Y here includes support for CramFs (Compressed ROM File 13691da177e4SLinus Torvalds System). CramFs is designed to be a simple, small, and compressed 13701da177e4SLinus Torvalds file system for ROM based embedded systems. CramFs is read-only, 13711da177e4SLinus Torvalds limited to 256MB file systems (with 16MB files), and doesn't support 13721da177e4SLinus Torvalds 16/32 bits uid/gid, hard links and timestamps. 13731da177e4SLinus Torvalds 13741da177e4SLinus Torvalds See <file:Documentation/filesystems/cramfs.txt> and 13751da177e4SLinus Torvalds <file:fs/cramfs/README> for further information. 13761da177e4SLinus Torvalds 13771da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 13781da177e4SLinus Torvalds cramfs. Note that the root file system (the one containing the 13791da177e4SLinus Torvalds directory /) cannot be compiled as a module. 13801da177e4SLinus Torvalds 13811da177e4SLinus Torvalds If unsure, say N. 13821da177e4SLinus Torvalds 13831da177e4SLinus Torvaldsconfig VXFS_FS 13841da177e4SLinus Torvalds tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 13859361401eSDavid Howells depends on BLOCK 13861da177e4SLinus Torvalds help 13871da177e4SLinus Torvalds FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 13881da177e4SLinus Torvalds file system format. VERITAS VxFS(TM) is the standard file system 13891da177e4SLinus Torvalds of SCO UnixWare (and possibly others) and optionally available 13901da177e4SLinus Torvalds for Sunsoft Solaris, HP-UX and many other operating systems. 13911da177e4SLinus Torvalds Currently only readonly access is supported. 13921da177e4SLinus Torvalds 13931da177e4SLinus Torvalds NOTE: the file system type as used by mount(1), mount(2) and 13941da177e4SLinus Torvalds fstab(5) is 'vxfs' as it describes the file system format, not 13951da177e4SLinus Torvalds the actual driver. 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 13981da177e4SLinus Torvalds called freevxfs. If unsure, say N. 13991da177e4SLinus Torvalds 140025fad945SRandy Dunlapconfig MINIX_FS 140125fad945SRandy Dunlap tristate "Minix file system support" 140225fad945SRandy Dunlap depends on BLOCK 140325fad945SRandy Dunlap help 140425fad945SRandy Dunlap Minix is a simple operating system used in many classes about OS's. 140525fad945SRandy Dunlap The minix file system (method to organize files on a hard disk 140625fad945SRandy Dunlap partition or a floppy disk) was the original file system for Linux, 140725fad945SRandy Dunlap but has been superseded by the second extended file system ext2fs. 140825fad945SRandy Dunlap You don't want to use the minix file system on your hard disk 140925fad945SRandy Dunlap because of certain built-in restrictions, but it is sometimes found 141025fad945SRandy Dunlap on older Linux floppy disks. This option will enlarge your kernel 141125fad945SRandy Dunlap by about 28 KB. If unsure, say N. 141225fad945SRandy Dunlap 141325fad945SRandy Dunlap To compile this file system support as a module, choose M here: the 141425fad945SRandy Dunlap module will be called minix. Note that the file system of your root 141525fad945SRandy Dunlap partition (the one containing the directory /) cannot be compiled as 141625fad945SRandy Dunlap a module. 141725fad945SRandy Dunlap 141863ca8ce2SBob Copelandconfig OMFS_FS 141963ca8ce2SBob Copeland tristate "SonicBlue Optimized MPEG File System support" 142063ca8ce2SBob Copeland depends on BLOCK 142163ca8ce2SBob Copeland select CRC_ITU_T 142263ca8ce2SBob Copeland help 142363ca8ce2SBob Copeland This is the proprietary file system used by the Rio Karma music 142463ca8ce2SBob Copeland player and ReplayTV DVR. Despite the name, this filesystem is not 142563ca8ce2SBob Copeland more efficient than a standard FS for MPEG files, in fact likely 142663ca8ce2SBob Copeland the opposite is true. Say Y if you have either of these devices 142763ca8ce2SBob Copeland and wish to mount its disk. 142863ca8ce2SBob Copeland 142963ca8ce2SBob Copeland To compile this file system support as a module, choose M here: the 143063ca8ce2SBob Copeland module will be called omfs. If unsure, say N. 14311da177e4SLinus Torvalds 14321da177e4SLinus Torvaldsconfig HPFS_FS 14331da177e4SLinus Torvalds tristate "OS/2 HPFS file system support" 14349361401eSDavid Howells depends on BLOCK 14351da177e4SLinus Torvalds help 14361da177e4SLinus Torvalds OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 14371da177e4SLinus Torvalds is the file system used for organizing files on OS/2 hard disk 14381da177e4SLinus Torvalds partitions. Say Y if you want to be able to read files from and 14391da177e4SLinus Torvalds write files to an OS/2 HPFS partition on your hard drive. OS/2 14401da177e4SLinus Torvalds floppies however are in regular MSDOS format, so you don't need this 14411da177e4SLinus Torvalds option in order to be able to read them. Read 14421da177e4SLinus Torvalds <file:Documentation/filesystems/hpfs.txt>. 14431da177e4SLinus Torvalds 14441da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14451da177e4SLinus Torvalds module will be called hpfs. If unsure, say N. 14461da177e4SLinus Torvalds 14471da177e4SLinus Torvalds 14481da177e4SLinus Torvaldsconfig QNX4FS_FS 14491da177e4SLinus Torvalds tristate "QNX4 file system support (read only)" 14509361401eSDavid Howells depends on BLOCK 14511da177e4SLinus Torvalds help 14521da177e4SLinus Torvalds This is the file system used by the real-time operating systems 14531da177e4SLinus Torvalds QNX 4 and QNX 6 (the latter is also called QNX RTP). 14541da177e4SLinus Torvalds Further information is available at <http://www.qnx.com/>. 14551da177e4SLinus Torvalds Say Y if you intend to mount QNX hard disks or floppies. 14561da177e4SLinus Torvalds Unless you say Y to "QNX4FS read-write support" below, you will 14571da177e4SLinus Torvalds only be able to read these file systems. 14581da177e4SLinus Torvalds 14591da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14601da177e4SLinus Torvalds module will be called qnx4. 14611da177e4SLinus Torvalds 14621da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 14631da177e4SLinus Torvalds answer N. 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvaldsconfig QNX4FS_RW 14661da177e4SLinus Torvalds bool "QNX4FS write support (DANGEROUS)" 14671da177e4SLinus Torvalds depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 14681da177e4SLinus Torvalds help 14691da177e4SLinus Torvalds Say Y if you want to test write support for QNX4 file systems. 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvalds It's currently broken, so for now: 14721da177e4SLinus Torvalds answer N. 14731da177e4SLinus Torvalds 147425fad945SRandy Dunlapconfig ROMFS_FS 147525fad945SRandy Dunlap tristate "ROM file system support" 147625fad945SRandy Dunlap depends on BLOCK 147725fad945SRandy Dunlap ---help--- 147825fad945SRandy Dunlap This is a very small read-only file system mainly intended for 147925fad945SRandy Dunlap initial ram disks of installation disks, but it could be used for 148025fad945SRandy Dunlap other read-only media as well. Read 148125fad945SRandy Dunlap <file:Documentation/filesystems/romfs.txt> for details. 148225fad945SRandy Dunlap 148325fad945SRandy Dunlap To compile this file system support as a module, choose M here: the 148425fad945SRandy Dunlap module will be called romfs. Note that the file system of your 148525fad945SRandy Dunlap root partition (the one containing the directory /) cannot be a 148625fad945SRandy Dunlap module. 148725fad945SRandy Dunlap 148825fad945SRandy Dunlap If you don't know whether you need it, then you don't need it: 148925fad945SRandy Dunlap answer N. 14901da177e4SLinus Torvalds 14911da177e4SLinus Torvalds 14921da177e4SLinus Torvaldsconfig SYSV_FS 14931da177e4SLinus Torvalds tristate "System V/Xenix/V7/Coherent file system support" 14949361401eSDavid Howells depends on BLOCK 14951da177e4SLinus Torvalds help 14961da177e4SLinus Torvalds SCO, Xenix and Coherent are commercial Unix systems for Intel 14971da177e4SLinus Torvalds machines, and Version 7 was used on the DEC PDP-11. Saying Y 14981da177e4SLinus Torvalds here would allow you to read from their floppies and hard disk 14991da177e4SLinus Torvalds partitions. 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds If you have floppies or hard disk partitions like that, it is likely 15021da177e4SLinus Torvalds that they contain binaries from those other Unix systems; in order 1503cab00891SMatt LaPlante to run these binaries, you will want to install linux-abi which is 15041da177e4SLinus Torvalds a set of kernel modules that lets you run SCO, Xenix, Wyse, 15051da177e4SLinus Torvalds UnixWare, Dell Unix and System V programs under Linux. It is 15061da177e4SLinus Torvalds available via FTP (user: ftp) from 15071da177e4SLinus Torvalds <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 15081da177e4SLinus Torvalds NOTE: that will work only for binaries from Intel-based systems; 15091da177e4SLinus Torvalds PDP ones will have to wait until somebody ports Linux to -11 ;-) 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 15121da177e4SLinus Torvalds network using NFS, you don't need the System V file system support 15131da177e4SLinus Torvalds (but you need NFS file system support obviously). 15141da177e4SLinus Torvalds 15151da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 15161da177e4SLinus Torvalds good portable way to transport files and directories between unixes 15171da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 15181da177e4SLinus Torvalds tar" or preferably "info tar"). Note also that this option has 15191da177e4SLinus Torvalds nothing whatsoever to do with the option "System V IPC". Read about 15201da177e4SLinus Torvalds the System V file system in 15211da177e4SLinus Torvalds <file:Documentation/filesystems/sysv-fs.txt>. 15221da177e4SLinus Torvalds Saying Y here will enlarge your kernel by about 27 KB. 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 15251da177e4SLinus Torvalds sysv. 15261da177e4SLinus Torvalds 15271da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds 15301da177e4SLinus Torvaldsconfig UFS_FS 15311da177e4SLinus Torvalds tristate "UFS file system support (read only)" 15329361401eSDavid Howells depends on BLOCK 15331da177e4SLinus Torvalds help 15341da177e4SLinus Torvalds BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 15351da177e4SLinus Torvalds OpenBSD and NeXTstep) use a file system called UFS. Some System V 15361da177e4SLinus Torvalds Unixes can create and mount hard disk partitions and diskettes using 15371da177e4SLinus Torvalds this file system as well. Saying Y here will allow you to read from 15381da177e4SLinus Torvalds these partitions; if you also want to write to them, say Y to the 15391da177e4SLinus Torvalds experimental "UFS file system write support", below. Please read the 15401da177e4SLinus Torvalds file <file:Documentation/filesystems/ufs.txt> for more information. 15411da177e4SLinus Torvalds 15421da177e4SLinus Torvalds The recently released UFS2 variant (used in FreeBSD 5.x) is 15431da177e4SLinus Torvalds READ-ONLY supported. 15441da177e4SLinus Torvalds 15451da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 15461da177e4SLinus Torvalds good portable way to transport files and directories between unixes 15471da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 15481da177e4SLinus Torvalds tar" or preferably "info tar"). 15491da177e4SLinus Torvalds 15501da177e4SLinus Torvalds When accessing NeXTstep files, you may need to convert them from the 15511da177e4SLinus Torvalds NeXT character set to the Latin1 character set; use the program 15521da177e4SLinus Torvalds recode ("info recode") for this purpose. 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvalds To compile the UFS file system support as a module, choose M here: the 15551da177e4SLinus Torvalds module will be called ufs. 15561da177e4SLinus Torvalds 15571da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15581da177e4SLinus Torvalds 15591da177e4SLinus Torvaldsconfig UFS_FS_WRITE 15601da177e4SLinus Torvalds bool "UFS file system write support (DANGEROUS)" 15615afb3145SEvgeniy Dushistov depends on UFS_FS && EXPERIMENTAL 15621da177e4SLinus Torvalds help 15631da177e4SLinus Torvalds Say Y here if you want to try writing to UFS partitions. This is 15641da177e4SLinus Torvalds experimental, so you should back up your UFS partitions beforehand. 15651da177e4SLinus Torvalds 1566abf5d15fSEvgeniy Dushistovconfig UFS_DEBUG 1567abf5d15fSEvgeniy Dushistov bool "UFS debugging" 1568abf5d15fSEvgeniy Dushistov depends on UFS_FS 1569abf5d15fSEvgeniy Dushistov help 1570abf5d15fSEvgeniy Dushistov If you are experiencing any problems with the UFS filesystem, say 1571abf5d15fSEvgeniy Dushistov Y here. This will result in _many_ additional debugging messages to be 1572abf5d15fSEvgeniy Dushistov written to the system log. 1573abf5d15fSEvgeniy Dushistov 15741da177e4SLinus Torvaldsendmenu 15751da177e4SLinus Torvalds 1576ea0985adSJan Engelhardtmenuconfig NETWORK_FILESYSTEMS 1577ea0985adSJan Engelhardt bool "Network File Systems" 1578ea0985adSJan Engelhardt default y 15791da177e4SLinus Torvalds depends on NET 1580ea0985adSJan Engelhardt ---help--- 1581ea0985adSJan Engelhardt Say Y here to get to see options for network filesystems and 1582ea0985adSJan Engelhardt filesystem-related networking code, such as NFS daemon and 1583ea0985adSJan Engelhardt RPCSEC security modules. 15846fb1bc10SChuck Lever 1585ea0985adSJan Engelhardt This option alone does not add any kernel code. 1586ea0985adSJan Engelhardt 1587ea0985adSJan Engelhardt If you say N, all options in this submenu will be skipped and 1588ea0985adSJan Engelhardt disabled; if unsure, say Y here. 1589ea0985adSJan Engelhardt 1590ea0985adSJan Engelhardtif NETWORK_FILESYSTEMS 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvaldsconfig NFS_FS 15936fb1bc10SChuck Lever tristate "NFS client support" 15941da177e4SLinus Torvalds depends on INET 15951da177e4SLinus Torvalds select LOCKD 15961da177e4SLinus Torvalds select SUNRPC 1597b7fa0554SAndreas Gruenbacher select NFS_ACL_SUPPORT if NFS_V3_ACL 15981da177e4SLinus Torvalds help 15996fb1bc10SChuck Lever Choose Y here if you want to access files residing on other 16006fb1bc10SChuck Lever computers using Sun's Network File System protocol. To compile 16016fb1bc10SChuck Lever this file system support as a module, choose M here: the module 16026fb1bc10SChuck Lever will be called nfs. 16031da177e4SLinus Torvalds 16046fb1bc10SChuck Lever To mount file systems exported by NFS servers, you also need to 16056fb1bc10SChuck Lever install the user space mount.nfs command which can be found in 16066fb1bc10SChuck Lever the Linux nfs-utils package, available from http://linux-nfs.org/. 16076fb1bc10SChuck Lever Information about using the mount command is available in the 16086fb1bc10SChuck Lever mount(8) man page. More detail about the Linux NFS client 16096fb1bc10SChuck Lever implementation is available via the nfs(5) man page. 16101da177e4SLinus Torvalds 16116fb1bc10SChuck Lever Below you can choose which versions of the NFS protocol are 16126fb1bc10SChuck Lever available in the kernel to mount NFS servers. Support for NFS 16136fb1bc10SChuck Lever version 2 (RFC 1094) is always available when NFS_FS is selected. 16141da177e4SLinus Torvalds 16156fb1bc10SChuck Lever To configure a system which mounts its root file system via NFS 16166fb1bc10SChuck Lever at boot time, say Y here, select "Kernel level IP 16176fb1bc10SChuck Lever autoconfiguration" in the NETWORK menu, and select "Root file 16186fb1bc10SChuck Lever system on NFS" below. You cannot compile this file system as a 16196fb1bc10SChuck Lever module in this case. 16201da177e4SLinus Torvalds 16216fb1bc10SChuck Lever If unsure, say N. 16221da177e4SLinus Torvalds 16231da177e4SLinus Torvaldsconfig NFS_V3 16246fb1bc10SChuck Lever bool "NFS client support for NFS version 3" 16251da177e4SLinus Torvalds depends on NFS_FS 16261da177e4SLinus Torvalds help 16276fb1bc10SChuck Lever This option enables support for version 3 of the NFS protocol 16286fb1bc10SChuck Lever (RFC 1813) in the kernel's NFS client. 16291da177e4SLinus Torvalds 16301da177e4SLinus Torvalds If unsure, say Y. 16311da177e4SLinus Torvalds 1632b7fa0554SAndreas Gruenbacherconfig NFS_V3_ACL 16336fb1bc10SChuck Lever bool "NFS client support for the NFSv3 ACL protocol extension" 1634b7fa0554SAndreas Gruenbacher depends on NFS_V3 1635b7fa0554SAndreas Gruenbacher help 16366fb1bc10SChuck Lever Some NFS servers support an auxiliary NFSv3 ACL protocol that 16376fb1bc10SChuck Lever Sun added to Solaris but never became an official part of the 16386fb1bc10SChuck Lever NFS version 3 protocol. This protocol extension allows 16396fb1bc10SChuck Lever applications on NFS clients to manipulate POSIX Access Control 16406fb1bc10SChuck Lever Lists on files residing on NFS servers. NFS servers enforce 16416fb1bc10SChuck Lever ACLs on local files whether this protocol is available or not. 16426fb1bc10SChuck Lever 16436fb1bc10SChuck Lever Choose Y here if your NFS server supports the Solaris NFSv3 ACL 16446fb1bc10SChuck Lever protocol extension and you want your NFS client to allow 16456fb1bc10SChuck Lever applications to access and modify ACLs on files on the server. 16466fb1bc10SChuck Lever 16476fb1bc10SChuck Lever Most NFS servers don't support the Solaris NFSv3 ACL protocol 16486fb1bc10SChuck Lever extension. You can choose N here or specify the "noacl" mount 16496fb1bc10SChuck Lever option to prevent your NFS client from trying to use the NFSv3 16506fb1bc10SChuck Lever ACL protocol. 1651b7fa0554SAndreas Gruenbacher 1652b7fa0554SAndreas Gruenbacher If unsure, say N. 1653b7fa0554SAndreas Gruenbacher 16541da177e4SLinus Torvaldsconfig NFS_V4 16556fb1bc10SChuck Lever bool "NFS client support for NFS version 4 (EXPERIMENTAL)" 16561da177e4SLinus Torvalds depends on NFS_FS && EXPERIMENTAL 16571da177e4SLinus Torvalds select RPCSEC_GSS_KRB5 16581da177e4SLinus Torvalds help 16596fb1bc10SChuck Lever This option enables support for version 4 of the NFS protocol 16606fb1bc10SChuck Lever (RFC 3530) in the kernel's NFS client. 16611da177e4SLinus Torvalds 16626fb1bc10SChuck Lever To mount NFS servers using NFSv4, you also need to install user 16636fb1bc10SChuck Lever space programs which can be found in the Linux nfs-utils package, 16646fb1bc10SChuck Lever available from http://linux-nfs.org/. 16651da177e4SLinus Torvalds 16661da177e4SLinus Torvalds If unsure, say N. 16671da177e4SLinus Torvalds 16686fb1bc10SChuck Leverconfig ROOT_NFS 16696fb1bc10SChuck Lever bool "Root file system on NFS" 16706fb1bc10SChuck Lever depends on NFS_FS=y && IP_PNP 16716fb1bc10SChuck Lever help 16726fb1bc10SChuck Lever If you want your system to mount its root file system via NFS, 16736fb1bc10SChuck Lever choose Y here. This is common practice for managing systems 16746fb1bc10SChuck Lever without local permanent storage. For details, read 16756fb1bc10SChuck Lever <file:Documentation/filesystems/nfsroot.txt>. 16766fb1bc10SChuck Lever 16776fb1bc10SChuck Lever Most people say N here. 16786fb1bc10SChuck Lever 16791da177e4SLinus Torvaldsconfig NFSD 16801da177e4SLinus Torvalds tristate "NFS server support" 16811da177e4SLinus Torvalds depends on INET 16821da177e4SLinus Torvalds select LOCKD 16831da177e4SLinus Torvalds select SUNRPC 16841da177e4SLinus Torvalds select EXPORTFS 1685f05e15b5SHerbert Xu select NFS_ACL_SUPPORT if NFSD_V2_ACL 16861da177e4SLinus Torvalds help 1687d24455b5SChuck Lever Choose Y here if you want to allow other computers to access 1688d24455b5SChuck Lever files residing on this system using Sun's Network File System 1689d24455b5SChuck Lever protocol. To compile the NFS server support as a module, 1690d24455b5SChuck Lever choose M here: the module will be called nfsd. 16911da177e4SLinus Torvalds 1692d24455b5SChuck Lever You may choose to use a user-space NFS server instead, in which 1693d24455b5SChuck Lever case you can choose N here. 16941da177e4SLinus Torvalds 1695d24455b5SChuck Lever To export local file systems using NFS, you also need to install 1696d24455b5SChuck Lever user space programs which can be found in the Linux nfs-utils 1697d24455b5SChuck Lever package, available from http://linux-nfs.org/. More detail about 1698d24455b5SChuck Lever the Linux NFS server implementation is available via the 1699d24455b5SChuck Lever exports(5) man page. 17001da177e4SLinus Torvalds 1701d24455b5SChuck Lever Below you can choose which versions of the NFS protocol are 1702d24455b5SChuck Lever available to clients mounting the NFS server on this system. 1703d24455b5SChuck Lever Support for NFS version 2 (RFC 1094) is always available when 1704d24455b5SChuck Lever CONFIG_NFSD is selected. 17051da177e4SLinus Torvalds 1706d24455b5SChuck Lever If unsure, say N. 17071da177e4SLinus Torvalds 1708a257cdd0SAndreas Gruenbacherconfig NFSD_V2_ACL 1709a257cdd0SAndreas Gruenbacher bool 1710a257cdd0SAndreas Gruenbacher depends on NFSD 1711a257cdd0SAndreas Gruenbacher 17121da177e4SLinus Torvaldsconfig NFSD_V3 1713d24455b5SChuck Lever bool "NFS server support for NFS version 3" 17141da177e4SLinus Torvalds depends on NFSD 17151da177e4SLinus Torvalds help 1716d24455b5SChuck Lever This option enables support in your system's NFS server for 1717d24455b5SChuck Lever version 3 of the NFS protocol (RFC 1813). 1718d24455b5SChuck Lever 1719d24455b5SChuck Lever If unsure, say Y. 17201da177e4SLinus Torvalds 1721a257cdd0SAndreas Gruenbacherconfig NFSD_V3_ACL 1722d24455b5SChuck Lever bool "NFS server support for the NFSv3 ACL protocol extension" 1723a257cdd0SAndreas Gruenbacher depends on NFSD_V3 172478dd0992SChuck Lever select NFSD_V2_ACL 1725a257cdd0SAndreas Gruenbacher help 1726d24455b5SChuck Lever Solaris NFS servers support an auxiliary NFSv3 ACL protocol that 1727d24455b5SChuck Lever never became an official part of the NFS version 3 protocol. 1728d24455b5SChuck Lever This protocol extension allows applications on NFS clients to 1729d24455b5SChuck Lever manipulate POSIX Access Control Lists on files residing on NFS 1730d24455b5SChuck Lever servers. NFS servers enforce POSIX ACLs on local files whether 1731d24455b5SChuck Lever this protocol is available or not. 1732d24455b5SChuck Lever 1733d24455b5SChuck Lever This option enables support in your system's NFS server for the 1734d24455b5SChuck Lever NFSv3 ACL protocol extension allowing NFS clients to manipulate 1735d24455b5SChuck Lever POSIX ACLs on files exported by your system's NFS server. NFS 1736d24455b5SChuck Lever clients which support the Solaris NFSv3 ACL protocol can then 1737d24455b5SChuck Lever access and modify ACLs on your NFS server. 1738d24455b5SChuck Lever 1739d24455b5SChuck Lever To store ACLs on your NFS server, you also need to enable ACL- 1740d24455b5SChuck Lever related CONFIG options for your local file systems of choice. 1741d24455b5SChuck Lever 1742d24455b5SChuck Lever If unsure, say N. 1743a257cdd0SAndreas Gruenbacher 17441da177e4SLinus Torvaldsconfig NFSD_V4 1745d24455b5SChuck Lever bool "NFS server support for NFS version 4 (EXPERIMENTAL)" 17461a448fdbSChuck Lever depends on NFSD && PROC_FS && EXPERIMENTAL 17471a448fdbSChuck Lever select NFSD_V3 174889206955SChuck Lever select FS_POSIX_ACL 174942ed95c4SJ. Bruce Fields select RPCSEC_GSS_KRB5 17501da177e4SLinus Torvalds help 1751d24455b5SChuck Lever This option enables support in your system's NFS server for 1752d24455b5SChuck Lever version 4 of the NFS protocol (RFC 3530). 1753d24455b5SChuck Lever 1754d24455b5SChuck Lever To export files using NFSv4, you need to install additional user 1755d24455b5SChuck Lever space programs which can be found in the Linux nfs-utils package, 1756d24455b5SChuck Lever available from http://linux-nfs.org/. 1757d24455b5SChuck Lever 17581da177e4SLinus Torvalds If unsure, say N. 17591da177e4SLinus Torvalds 17601da177e4SLinus Torvaldsconfig LOCKD 17611da177e4SLinus Torvalds tristate 17621da177e4SLinus Torvalds 17631da177e4SLinus Torvaldsconfig LOCKD_V4 17641da177e4SLinus Torvalds bool 17651da177e4SLinus Torvalds depends on NFSD_V3 || NFS_V3 17661da177e4SLinus Torvalds default y 17671da177e4SLinus Torvalds 17681da177e4SLinus Torvaldsconfig EXPORTFS 17691da177e4SLinus Torvalds tristate 17701da177e4SLinus Torvalds 1771a257cdd0SAndreas Gruenbacherconfig NFS_ACL_SUPPORT 1772a257cdd0SAndreas Gruenbacher tristate 1773a257cdd0SAndreas Gruenbacher select FS_POSIX_ACL 1774a257cdd0SAndreas Gruenbacher 1775a257cdd0SAndreas Gruenbacherconfig NFS_COMMON 1776a257cdd0SAndreas Gruenbacher bool 1777a257cdd0SAndreas Gruenbacher depends on NFSD || NFS_FS 1778a257cdd0SAndreas Gruenbacher default y 1779a257cdd0SAndreas Gruenbacher 17801da177e4SLinus Torvaldsconfig SUNRPC 17811da177e4SLinus Torvalds tristate 17821da177e4SLinus Torvalds 17831da177e4SLinus Torvaldsconfig SUNRPC_GSS 17841da177e4SLinus Torvalds tristate 17851da177e4SLinus Torvalds 1786c3a57ed7S\"Talpey, Thomas\config SUNRPC_XPRT_RDMA 17873211e4ebSJames Lentini tristate 1788113632d0S\"Talpey, Thomas\ depends on SUNRPC && INFINIBAND && EXPERIMENTAL 17893211e4ebSJames Lentini default SUNRPC && INFINIBAND 1790327a299dSChuck Lever help 1791327a299dSChuck Lever This option enables an RPC client transport capability that 1792327a299dSChuck Lever allows the NFS client to mount servers via an RDMA-enabled 1793327a299dSChuck Lever transport. 1794327a299dSChuck Lever 1795327a299dSChuck Lever To compile RPC client RDMA transport support as a module, 1796327a299dSChuck Lever choose M here: the module will be called xprtrdma. 1797327a299dSChuck Lever 1798327a299dSChuck Lever If unsure, say N. 1799c3a57ed7S\"Talpey, Thomas\ 1800a26cfad6SChuck Leverconfig SUNRPC_REGISTER_V4 1801a26cfad6SChuck Lever bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)" 1802a26cfad6SChuck Lever depends on SUNRPC && EXPERIMENTAL 1803a26cfad6SChuck Lever default n 1804a26cfad6SChuck Lever help 1805a26cfad6SChuck Lever Sun added support for registering RPC services at an IPv6 1806a26cfad6SChuck Lever address by creating two new versions of the rpcbind protocol 1807a26cfad6SChuck Lever (RFC 1833). 1808a26cfad6SChuck Lever 1809a26cfad6SChuck Lever This option enables support in the kernel RPC server for 1810a26cfad6SChuck Lever registering kernel RPC services via version 4 of the rpcbind 1811a26cfad6SChuck Lever protocol. If you enable this option, you must run a portmapper 1812a26cfad6SChuck Lever daemon that supports rpcbind protocol version 4. 1813a26cfad6SChuck Lever 1814a26cfad6SChuck Lever Serving NFS over IPv6 from knfsd (the kernel's NFS server) 1815a26cfad6SChuck Lever requires that you enable this option and use a portmapper that 1816a26cfad6SChuck Lever supports rpcbind version 4. 1817a26cfad6SChuck Lever 1818a26cfad6SChuck Lever If unsure, say N to get traditional behavior (register kernel 1819a26cfad6SChuck Lever RPC services using only rpcbind version 2). Distributions 1820a26cfad6SChuck Lever using the legacy Linux portmapper daemon must say N here. 1821a26cfad6SChuck Lever 18221da177e4SLinus Torvaldsconfig RPCSEC_GSS_KRB5 18231da177e4SLinus Torvalds tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 18241da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18251da177e4SLinus Torvalds select SUNRPC_GSS 18261da177e4SLinus Torvalds select CRYPTO 18271da177e4SLinus Torvalds select CRYPTO_MD5 18281da177e4SLinus Torvalds select CRYPTO_DES 1829bcbaecbbSPatrick McHardy select CRYPTO_CBC 18301da177e4SLinus Torvalds help 1831327a299dSChuck Lever Choose Y here to enable Secure RPC using the Kerberos version 5 1832327a299dSChuck Lever GSS-API mechanism (RFC 1964). 18331da177e4SLinus Torvalds 1834327a299dSChuck Lever Secure RPC calls with Kerberos require an auxiliary user-space 1835327a299dSChuck Lever daemon which may be found in the Linux nfs-utils package 1836327a299dSChuck Lever available from http://linux-nfs.org/. In addition, user-space 1837327a299dSChuck Lever Kerberos support should be installed. 18381da177e4SLinus Torvalds 18391da177e4SLinus Torvalds If unsure, say N. 18401da177e4SLinus Torvalds 18411da177e4SLinus Torvaldsconfig RPCSEC_GSS_SPKM3 18421da177e4SLinus Torvalds tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 18431da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18441da177e4SLinus Torvalds select SUNRPC_GSS 18451da177e4SLinus Torvalds select CRYPTO 18461da177e4SLinus Torvalds select CRYPTO_MD5 18471da177e4SLinus Torvalds select CRYPTO_DES 1848df6db302SJ. Bruce Fields select CRYPTO_CAST5 1849bcbaecbbSPatrick McHardy select CRYPTO_CBC 18501da177e4SLinus Torvalds help 1851327a299dSChuck Lever Choose Y here to enable Secure RPC using the SPKM3 public key 1852327a299dSChuck Lever GSS-API mechansim (RFC 2025). 18531da177e4SLinus Torvalds 1854327a299dSChuck Lever Secure RPC calls with SPKM3 require an auxiliary userspace 1855327a299dSChuck Lever daemon which may be found in the Linux nfs-utils package 1856327a299dSChuck Lever available from http://linux-nfs.org/. 18571da177e4SLinus Torvalds 18581da177e4SLinus Torvalds If unsure, say N. 18591da177e4SLinus Torvalds 18601da177e4SLinus Torvaldsconfig SMB_FS 1861c7736339SAndrew Morton tristate "SMB file system support (OBSOLETE, please use CIFS)" 18621da177e4SLinus Torvalds depends on INET 18631da177e4SLinus Torvalds select NLS 18641da177e4SLinus Torvalds help 18651da177e4SLinus Torvalds SMB (Server Message Block) is the protocol Windows for Workgroups 18661da177e4SLinus Torvalds (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 18671da177e4SLinus Torvalds files and printers over local networks. Saying Y here allows you to 18681da177e4SLinus Torvalds mount their file systems (often called "shares" in this context) and 18691da177e4SLinus Torvalds access them just like any other Unix directory. Currently, this 18701da177e4SLinus Torvalds works only if the Windows machines use TCP/IP as the underlying 18711da177e4SLinus Torvalds transport protocol, and not NetBEUI. For details, read 18721da177e4SLinus Torvalds <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 18731da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>. 18741da177e4SLinus Torvalds 18751da177e4SLinus Torvalds Note: if you just want your box to act as an SMB *server* and make 18761da177e4SLinus Torvalds files and printing services available to Windows clients (which need 18771da177e4SLinus Torvalds to have a TCP/IP stack), you don't need to say Y here; you can use 18781da177e4SLinus Torvalds the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 18791da177e4SLinus Torvalds for that. 18801da177e4SLinus Torvalds 18811da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 18821da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 18831da177e4SLinus Torvalds 1884c7736339SAndrew Morton To compile the SMB support as a module, choose M here: 1885c7736339SAndrew Morton the module will be called smbfs. Most people say N, however. 18861da177e4SLinus Torvalds 18871da177e4SLinus Torvaldsconfig SMB_NLS_DEFAULT 18881da177e4SLinus Torvalds bool "Use a default NLS" 18891da177e4SLinus Torvalds depends on SMB_FS 18901da177e4SLinus Torvalds help 18911da177e4SLinus Torvalds Enabling this will make smbfs use nls translations by default. You 18921da177e4SLinus Torvalds need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 18931da177e4SLinus Torvalds settings and you need to give the default nls for the SMB server as 18941da177e4SLinus Torvalds CONFIG_SMB_NLS_REMOTE. 18951da177e4SLinus Torvalds 18961da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18971da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18981da177e4SLinus Torvalds 18991da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 19001da177e4SLinus Torvalds 19011da177e4SLinus Torvaldsconfig SMB_NLS_REMOTE 19021da177e4SLinus Torvalds string "Default Remote NLS Option" 19031da177e4SLinus Torvalds depends on SMB_NLS_DEFAULT 19041da177e4SLinus Torvalds default "cp437" 19051da177e4SLinus Torvalds help 19061da177e4SLinus Torvalds This setting allows you to specify a default value for which 19071da177e4SLinus Torvalds codepage the server uses. If this field is left blank no 19081da177e4SLinus Torvalds translations will be done by default. The local codepage/charset 19091da177e4SLinus Torvalds default to CONFIG_NLS_DEFAULT. 19101da177e4SLinus Torvalds 19111da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 19121da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 19131da177e4SLinus Torvalds 19141da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 19151da177e4SLinus Torvalds 19161da177e4SLinus Torvaldsconfig CIFS 1917c7736339SAndrew Morton tristate "CIFS support (advanced network filesystem, SMBFS successor)" 19181da177e4SLinus Torvalds depends on INET 19191da177e4SLinus Torvalds select NLS 19201da177e4SLinus Torvalds help 19211da177e4SLinus Torvalds This is the client VFS module for the Common Internet File System 19221da177e4SLinus Torvalds (CIFS) protocol which is the successor to the Server Message Block 19231da177e4SLinus Torvalds (SMB) protocol, the native file sharing mechanism for most early 19241da177e4SLinus Torvalds PC operating systems. The CIFS protocol is fully supported by 19251da177e4SLinus Torvalds file servers such as Windows 2000 (including Windows 2003, NT 4 19261da177e4SLinus Torvalds and Windows XP) as well by Samba (which provides excellent CIFS 1927ec58ef03SSteve French server support for Linux and many other operating systems). Limited 19286103335dSSteve French support for OS/2 and Windows ME and similar servers is provided as 19296103335dSSteve French well. 19301da177e4SLinus Torvalds 19316103335dSSteve French The cifs module provides an advanced network file system 19326103335dSSteve French client for mounting to CIFS compliant servers. It includes 19336103335dSSteve French support for DFS (hierarchical name space), secure per-user 19346103335dSSteve French session establishment via Kerberos or NTLM or NTLMv2, 19356103335dSSteve French safe distributed caching (oplock), optional packet 19366103335dSSteve French signing, Unicode and other internationalization improvements. 19378af18971SSteve French If you need to mount to Samba or Windows from this machine, say Y. 19381da177e4SLinus Torvalds 19391da177e4SLinus Torvaldsconfig CIFS_STATS 19401da177e4SLinus Torvalds bool "CIFS statistics" 19411da177e4SLinus Torvalds depends on CIFS 19421da177e4SLinus Torvalds help 19431da177e4SLinus Torvalds Enabling this option will cause statistics for each server share 19441da177e4SLinus Torvalds mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 19451da177e4SLinus Torvalds 1946ec58ef03SSteve Frenchconfig CIFS_STATS2 19473979877eSSteve French bool "Extended statistics" 1948ec58ef03SSteve French depends on CIFS_STATS 1949ec58ef03SSteve French help 1950ec58ef03SSteve French Enabling this option will allow more detailed statistics on SMB 1951ec58ef03SSteve French request timing to be displayed in /proc/fs/cifs/DebugData and also 1952ec58ef03SSteve French allow optional logging of slow responses to dmesg (depending on the 1953ec58ef03SSteve French value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1954ec58ef03SSteve French These additional statistics may have a minor effect on performance 1955ec58ef03SSteve French and memory utilization. 1956ec58ef03SSteve French 1957ec58ef03SSteve French Unless you are a developer or are doing network performance analysis 1958ec58ef03SSteve French or tuning, say N. 1959ec58ef03SSteve French 19603979877eSSteve Frenchconfig CIFS_WEAK_PW_HASH 19613979877eSSteve French bool "Support legacy servers which use weaker LANMAN security" 19623979877eSSteve French depends on CIFS 19633979877eSSteve French help 19643979877eSSteve French Modern CIFS servers including Samba and most Windows versions 19653979877eSSteve French (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 19663979877eSSteve French security mechanisms. These hash the password more securely 19673979877eSSteve French than the mechanisms used in the older LANMAN version of the 19686103335dSSteve French SMB protocol but LANMAN based authentication is needed to 19696103335dSSteve French establish sessions with some old SMB servers. 19703979877eSSteve French 19713979877eSSteve French Enabling this option allows the cifs module to mount to older 19723979877eSSteve French LANMAN based servers such as OS/2 and Windows 95, but such 19733979877eSSteve French mounts may be less secure than mounts using NTLM or more recent 19743979877eSSteve French security mechanisms if you are on a public network. Unless you 19753979877eSSteve French have a need to access old SMB servers (and are on a private 19763979877eSSteve French network) you probably want to say N. Even if this support 19776103335dSSteve French is enabled in the kernel build, LANMAN authentication will not be 19786103335dSSteve French used automatically. At runtime LANMAN mounts are disabled but 19793979877eSSteve French can be set to required (or optional) either in 19803979877eSSteve French /proc/fs/cifs (see fs/cifs/README for more detail) or via an 19813979877eSSteve French option on the mount command. This support is disabled by 19823979877eSSteve French default in order to reduce the possibility of a downgrade 19833979877eSSteve French attack. 19843979877eSSteve French 19853979877eSSteve French If unsure, say N. 19863979877eSSteve French 198796c2a113SSteve Frenchconfig CIFS_UPCALL 198896c2a113SSteve French bool "Kerberos/SPNEGO advanced session setup" 198996c2a113SSteve French depends on CIFS && KEYS 199096c2a113SSteve French help 199196c2a113SSteve French Enables an upcall mechanism for CIFS which accesses 199296c2a113SSteve French userspace helper utilities to provide SPNEGO packaged (RFC 4178) 199396c2a113SSteve French Kerberos tickets which are needed to mount to certain secure servers 199496c2a113SSteve French (for which more secure Kerberos authentication is required). If 199596c2a113SSteve French unsure, say N. 199696c2a113SSteve French 19971da177e4SLinus Torvaldsconfig CIFS_XATTR 1998ec58ef03SSteve French bool "CIFS extended attributes" 19991da177e4SLinus Torvalds depends on CIFS 20001da177e4SLinus Torvalds help 20011da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 20021da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 20031da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). CIFS maps the name of 20041da177e4SLinus Torvalds extended attributes beginning with the user namespace prefix 20051da177e4SLinus Torvalds to SMB/CIFS EAs. EAs are stored on Windows servers without the 20061da177e4SLinus Torvalds user namespace prefix, but their names are seen by Linux cifs clients 20071da177e4SLinus Torvalds prefaced by the user namespace prefix. The system namespace 20081da177e4SLinus Torvalds (used by some filesystems to store ACLs) is not supported at 20091da177e4SLinus Torvalds this time. 20101da177e4SLinus Torvalds 20111da177e4SLinus Torvalds If unsure, say N. 20121da177e4SLinus Torvalds 20131da177e4SLinus Torvaldsconfig CIFS_POSIX 2014ec58ef03SSteve French bool "CIFS POSIX Extensions" 20151da177e4SLinus Torvalds depends on CIFS_XATTR 20161da177e4SLinus Torvalds help 20171da177e4SLinus Torvalds Enabling this option will cause the cifs client to attempt to 20181da177e4SLinus Torvalds negotiate a newer dialect with servers, such as Samba 3.0.5 20191da177e4SLinus Torvalds or later, that optionally can handle more POSIX like (rather 20201da177e4SLinus Torvalds than Windows like) file behavior. It also enables 20211da177e4SLinus Torvalds support for POSIX ACLs (getfacl and setfacl) to servers 20221da177e4SLinus Torvalds (such as Samba 3.10 and later) which can negotiate 20231da177e4SLinus Torvalds CIFS POSIX ACL support. If unsure, say N. 20241da177e4SLinus Torvalds 20253979877eSSteve Frenchconfig CIFS_DEBUG2 20263856a9d4SSteve French bool "Enable additional CIFS debugging routines" 20278ba10ab1SSteve French depends on CIFS 20283979877eSSteve French help 20293979877eSSteve French Enabling this option adds a few more debugging routines 20303979877eSSteve French to the cifs code which slightly increases the size of 20313979877eSSteve French the cifs module and can cause additional logging of debug 20323979877eSSteve French messages in some error paths, slowing performance. This 20333979877eSSteve French option can be turned off unless you are debugging 20343979877eSSteve French cifs problems. If unsure, say N. 20353979877eSSteve French 20361da177e4SLinus Torvaldsconfig CIFS_EXPERIMENTAL 20371da177e4SLinus Torvalds bool "CIFS Experimental Features (EXPERIMENTAL)" 2038cb9dbff9SSteve French depends on CIFS && EXPERIMENTAL 20391da177e4SLinus Torvalds help 2040ec58ef03SSteve French Enables cifs features under testing. These features are 20418af18971SSteve French experimental and currently include DFS support and directory 20428af18971SSteve French change notification ie fcntl(F_DNOTIFY), as well as the upcall 20438af18971SSteve French mechanism which will be used for Kerberos session negotiation 20448af18971SSteve French and uid remapping. Some of these features also may depend on 20458af18971SSteve French setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 20468af18971SSteve French (which is disabled by default). See the file fs/cifs/README 20478af18971SSteve French for more details. If unsure, say N. 20481da177e4SLinus Torvalds 20496103335dSSteve Frenchconfig CIFS_DFS_UPCALL 20506103335dSSteve French bool "DFS feature support (EXPERIMENTAL)" 20516103335dSSteve French depends on CIFS_EXPERIMENTAL 20526103335dSSteve French depends on KEYS 20536103335dSSteve French help 20546103335dSSteve French Enables an upcall mechanism for CIFS which contacts userspace 20556103335dSSteve French helper utilities to provide server name resolution (host names to 20566103335dSSteve French IP addresses) which is needed for implicit mounts of DFS junction 20576103335dSSteve French points. If unsure, say N. 20586103335dSSteve French 20591da177e4SLinus Torvaldsconfig NCP_FS 20601da177e4SLinus Torvalds tristate "NCP file system support (to mount NetWare volumes)" 20611da177e4SLinus Torvalds depends on IPX!=n || INET 20621da177e4SLinus Torvalds help 20631da177e4SLinus Torvalds NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 20641da177e4SLinus Torvalds used by Novell NetWare clients to talk to file servers. It is to 20651da177e4SLinus Torvalds IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 20661da177e4SLinus Torvalds to mount NetWare file server volumes and to access them just like 20671da177e4SLinus Torvalds any other Unix directory. For details, please read the file 20681da177e4SLinus Torvalds <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 20691da177e4SLinus Torvalds the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 20701da177e4SLinus Torvalds 20711da177e4SLinus Torvalds You do not have to say Y here if you want your Linux box to act as a 20721da177e4SLinus Torvalds file *server* for Novell NetWare clients. 20731da177e4SLinus Torvalds 20741da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 20751da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 20761da177e4SLinus Torvalds 20771da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 20781da177e4SLinus Torvalds ncpfs. Say N unless you are connected to a Novell network. 20791da177e4SLinus Torvalds 20801da177e4SLinus Torvaldssource "fs/ncpfs/Kconfig" 20811da177e4SLinus Torvalds 20821da177e4SLinus Torvaldsconfig CODA_FS 20831da177e4SLinus Torvalds tristate "Coda file system support (advanced network fs)" 20841da177e4SLinus Torvalds depends on INET 20851da177e4SLinus Torvalds help 20861da177e4SLinus Torvalds Coda is an advanced network file system, similar to NFS in that it 20871da177e4SLinus Torvalds enables you to mount file systems of a remote server and access them 20881da177e4SLinus Torvalds with regular Unix commands as if they were sitting on your hard 20891da177e4SLinus Torvalds disk. Coda has several advantages over NFS: support for 20901da177e4SLinus Torvalds disconnected operation (e.g. for laptops), read/write server 20911da177e4SLinus Torvalds replication, security model for authentication and encryption, 20921da177e4SLinus Torvalds persistent client caches and write back caching. 20931da177e4SLinus Torvalds 20941da177e4SLinus Torvalds If you say Y here, your Linux box will be able to act as a Coda 20951da177e4SLinus Torvalds *client*. You will need user level code as well, both for the 20961da177e4SLinus Torvalds client and server. Servers are currently user level, i.e. they need 20971da177e4SLinus Torvalds no kernel support. Please read 20981da177e4SLinus Torvalds <file:Documentation/filesystems/coda.txt> and check out the Coda 20991da177e4SLinus Torvalds home page <http://www.coda.cs.cmu.edu/>. 21001da177e4SLinus Torvalds 21011da177e4SLinus Torvalds To compile the coda client support as a module, choose M here: the 21021da177e4SLinus Torvalds module will be called coda. 21031da177e4SLinus Torvalds 21041da177e4SLinus Torvaldsconfig AFS_FS 210564aaa4f8SDavid Howells tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 21061da177e4SLinus Torvalds depends on INET && EXPERIMENTAL 210708e0e7c8SDavid Howells select AF_RXRPC 21081da177e4SLinus Torvalds help 21091da177e4SLinus Torvalds If you say Y here, you will get an experimental Andrew File System 21101da177e4SLinus Torvalds driver. It currently only supports unsecured read-only AFS access. 21111da177e4SLinus Torvalds 2112cc2e2767SMatt LaPlante See <file:Documentation/filesystems/afs.txt> for more information. 21131da177e4SLinus Torvalds 21141da177e4SLinus Torvalds If unsure, say N. 21151da177e4SLinus Torvalds 211608e0e7c8SDavid Howellsconfig AFS_DEBUG 211708e0e7c8SDavid Howells bool "AFS dynamic debugging" 211808e0e7c8SDavid Howells depends on AFS_FS 211908e0e7c8SDavid Howells help 212008e0e7c8SDavid Howells Say Y here to make runtime controllable debugging messages appear. 212108e0e7c8SDavid Howells 212208e0e7c8SDavid Howells See <file:Documentation/filesystems/afs.txt> for more information. 212308e0e7c8SDavid Howells 212408e0e7c8SDavid Howells If unsure, say N. 212508e0e7c8SDavid Howells 212693fa58cbSEric Van Hensbergenconfig 9P_FS 212793fa58cbSEric Van Hensbergen tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2128bd238fb4SLatchesar Ionkov depends on INET && NET_9P && EXPERIMENTAL 212993fa58cbSEric Van Hensbergen help 213093fa58cbSEric Van Hensbergen If you say Y here, you will get experimental support for 213193fa58cbSEric Van Hensbergen Plan 9 resource sharing via the 9P2000 protocol. 213293fa58cbSEric Van Hensbergen 213393fa58cbSEric Van Hensbergen See <http://v9fs.sf.net> for more information. 213493fa58cbSEric Van Hensbergen 213593fa58cbSEric Van Hensbergen If unsure, say N. 213693fa58cbSEric Van Hensbergen 2137ea0985adSJan Engelhardtendif # NETWORK_FILESYSTEMS 21381da177e4SLinus Torvalds 21399361401eSDavid Howellsif BLOCK 21401da177e4SLinus Torvaldsmenu "Partition Types" 21411da177e4SLinus Torvalds 21421da177e4SLinus Torvaldssource "fs/partitions/Kconfig" 21431da177e4SLinus Torvalds 21441da177e4SLinus Torvaldsendmenu 21459361401eSDavid Howellsendif 21461da177e4SLinus Torvalds 21471da177e4SLinus Torvaldssource "fs/nls/Kconfig" 2148e7fd4179SDavid Teiglandsource "fs/dlm/Kconfig" 21491da177e4SLinus Torvalds 21501da177e4SLinus Torvaldsendmenu 2151