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 13902ea2104SMingming Caoconfig EXT4DEV_FS 14002ea2104SMingming Cao tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)" 14102ea2104SMingming Cao depends on EXPERIMENTAL 142dab291afSMingming Cao select JBD2 143717d50e4SAndreas Dilger select CRC16 14402ea2104SMingming Cao help 14502ea2104SMingming Cao Ext4dev is a predecessor filesystem of the next generation 14602ea2104SMingming Cao extended fs ext4, based on ext3 filesystem code. It will be 14702ea2104SMingming Cao renamed ext4 fs later, once ext4dev is mature and stabilized. 14802ea2104SMingming Cao 14902ea2104SMingming Cao Unlike the change from ext2 filesystem to ext3 filesystem, 15002ea2104SMingming Cao the on-disk format of ext4dev is not the same as ext3 any more: 15102ea2104SMingming Cao it is based on extent maps and it supports 48-bit physical block 15202ea2104SMingming Cao numbers. These combined on-disk format changes will allow 15302ea2104SMingming Cao ext4dev/ext4 to handle more than 16 TB filesystem volumes -- 15402ea2104SMingming Cao a hard limit that ext3 cannot overcome without changing the 15502ea2104SMingming Cao on-disk format. 15602ea2104SMingming Cao 15702ea2104SMingming Cao Other than extent maps and 48-bit block numbers, ext4dev also is 15802ea2104SMingming Cao likely to have other new features such as persistent preallocation, 15902ea2104SMingming Cao high resolution time stamps, and larger file support etc. These 16002ea2104SMingming Cao features will be added to ext4dev gradually. 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 16702ea2104SMingming Caoconfig EXT4DEV_FS_XATTR 16802ea2104SMingming Cao bool "Ext4dev extended attributes" 16902ea2104SMingming Cao depends on EXT4DEV_FS 17002ea2104SMingming Cao default y 17102ea2104SMingming Cao help 17202ea2104SMingming Cao Extended attributes are name:value pairs associated with inodes by 17302ea2104SMingming Cao the kernel or by users (see the attr(5) manual page, or visit 17402ea2104SMingming Cao <http://acl.bestbits.at/> for details). 17502ea2104SMingming Cao 17602ea2104SMingming Cao If unsure, say N. 17702ea2104SMingming Cao 17802ea2104SMingming Cao You need this for POSIX ACL support on ext4dev/ext4. 17902ea2104SMingming Cao 18002ea2104SMingming Caoconfig EXT4DEV_FS_POSIX_ACL 18102ea2104SMingming Cao bool "Ext4dev POSIX Access Control Lists" 18202ea2104SMingming Cao depends on EXT4DEV_FS_XATTR 18302ea2104SMingming Cao select FS_POSIX_ACL 18402ea2104SMingming Cao help 18502ea2104SMingming Cao POSIX Access Control Lists (ACLs) support permissions for users and 18602ea2104SMingming Cao groups beyond the owner/group/world scheme. 18702ea2104SMingming Cao 18802ea2104SMingming Cao To learn more about Access Control Lists, visit the POSIX ACLs for 18902ea2104SMingming Cao Linux website <http://acl.bestbits.at/>. 19002ea2104SMingming Cao 19102ea2104SMingming Cao If you don't know what Access Control Lists are, say N 19202ea2104SMingming Cao 19302ea2104SMingming Caoconfig EXT4DEV_FS_SECURITY 19402ea2104SMingming Cao bool "Ext4dev Security Labels" 19502ea2104SMingming Cao depends on EXT4DEV_FS_XATTR 19602ea2104SMingming Cao help 19702ea2104SMingming Cao Security labels support alternative access control models 19802ea2104SMingming Cao implemented by security modules like SELinux. This option 19902ea2104SMingming Cao enables an extended attribute handler for file security 20002ea2104SMingming Cao labels in the ext4dev/ext4 filesystem. 20102ea2104SMingming Cao 20202ea2104SMingming Cao If you are not using a security module that requires using 20302ea2104SMingming Cao extended attributes for file security labels, say N. 20402ea2104SMingming Cao 2051da177e4SLinus Torvaldsconfig JBD 2061da177e4SLinus Torvalds tristate 2071da177e4SLinus Torvalds help 208cc2e2767SMatt LaPlante This is a generic journalling layer for block devices. It is 209b4e40a51SMark Fasheh currently used by the ext3 and OCFS2 file systems, but it could 210b4e40a51SMark Fasheh also be used to add journal support to other file systems or block 211b4e40a51SMark Fasheh devices such as RAID or LVM. 2121da177e4SLinus Torvalds 213b4e40a51SMark Fasheh If you are using the ext3 or OCFS2 file systems, you need to 214b4e40a51SMark Fasheh say Y here. If you are not using ext3 OCFS2 then you will probably 215b4e40a51SMark Fasheh want to say N. 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds To compile this device as a module, choose M here: the module will be 218b4e40a51SMark Fasheh called jbd. If you are compiling ext3 or OCFS2 into the kernel, 219b4e40a51SMark Fasheh you cannot compile this code as a module. 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvaldsconfig JBD_DEBUG 2221da177e4SLinus Torvalds bool "JBD (ext3) debugging support" 223c2a9159cSJose R. Santos depends on JBD && DEBUG_FS 2241da177e4SLinus Torvalds help 2251da177e4SLinus Torvalds If you are using the ext3 journaled file system (or potentially any 2261da177e4SLinus Torvalds other file system/device using JBD), this option allows you to 2271da177e4SLinus Torvalds enable debugging output while the system is running, in order to 2281da177e4SLinus Torvalds help track down any problems you are having. By default the 2291da177e4SLinus Torvalds debugging output will be turned off. 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds If you select Y here, then you will be able to turn on debugging 232c2a9159cSJose R. Santos with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a 233c2a9159cSJose R. Santos number between 1 and 5, the higher the number, the more debugging 234c2a9159cSJose R. Santos output is generated. To turn debugging off again, do 235c2a9159cSJose R. Santos "echo 0 > /sys/kernel/debug/jbd/jbd-debug". 2361da177e4SLinus Torvalds 237dab291afSMingming Caoconfig JBD2 238dab291afSMingming Cao tristate 239818d276cSGirish Shilamkar select CRC32 240dab291afSMingming Cao help 241dab291afSMingming Cao This is a generic journaling layer for block devices that support 242dab291afSMingming Cao both 32-bit and 64-bit block numbers. It is currently used by 243dab291afSMingming Cao the ext4dev/ext4 filesystem, but it could also be used to add 244dab291afSMingming Cao journal support to other file systems or block devices such 245dab291afSMingming Cao as RAID or LVM. 246dab291afSMingming Cao 247dab291afSMingming Cao If you are using ext4dev/ext4, you need to say Y here. If you are not 248dab291afSMingming Cao using ext4dev/ext4 then you will probably want to say N. 249dab291afSMingming Cao 250dab291afSMingming Cao To compile this device as a module, choose M here. The module will be 251dab291afSMingming Cao called jbd2. If you are compiling ext4dev/ext4 into the kernel, 252dab291afSMingming Cao you cannot compile this code as a module. 253dab291afSMingming Cao 254dab291afSMingming Caoconfig JBD2_DEBUG 255dab291afSMingming Cao bool "JBD2 (ext4dev/ext4) debugging support" 2560f49d5d0SJose R. Santos depends on JBD2 && DEBUG_FS 257dab291afSMingming Cao help 258dab291afSMingming Cao If you are using the ext4dev/ext4 journaled file system (or 259dab291afSMingming Cao potentially any other filesystem/device using JBD2), this option 260dab291afSMingming Cao allows you to enable debugging output while the system is running, 261dab291afSMingming Cao in order to help track down any problems you are having. 262dab291afSMingming Cao By default, the debugging output will be turned off. 263dab291afSMingming Cao 264dab291afSMingming Cao If you select Y here, then you will be able to turn on debugging 2650f49d5d0SJose R. Santos with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a 2660f49d5d0SJose R. Santos number between 1 and 5. The higher the number, the more debugging 2670f49d5d0SJose R. Santos output is generated. To turn debugging off again, do 2680f49d5d0SJose R. Santos "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug". 269dab291afSMingming Cao 2701da177e4SLinus Torvaldsconfig FS_MBCACHE 27102ea2104SMingming Cao# Meta block cache for Extended Attributes (ext2/ext3/ext4) 2721da177e4SLinus Torvalds tristate 27302ea2104SMingming Cao depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR 27402ea2104SMingming Cao default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y 27502ea2104SMingming Cao default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvaldsconfig REISERFS_FS 2781da177e4SLinus Torvalds tristate "Reiserfs support" 2791da177e4SLinus Torvalds help 2801da177e4SLinus Torvalds Stores not just filenames but the files themselves in a balanced 281cc2e2767SMatt LaPlante tree. Uses journalling. 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvalds Balanced trees are more efficient than traditional file system 2841da177e4SLinus Torvalds architectural foundations. 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds In general, ReiserFS is as fast as ext2, but is very efficient with 2871da177e4SLinus Torvalds large directories and small files. Additional patches are needed 2881da177e4SLinus Torvalds for NFS and quotas, please see <http://www.namesys.com/> for links. 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds It is more easily extended to have features currently found in 2911da177e4SLinus Torvalds database and keyword search systems than block allocation based file 2921da177e4SLinus Torvalds systems are. The next version will be so extended, and will support 2931da177e4SLinus Torvalds plugins consistent with our motto ``It takes more than a license to 2941da177e4SLinus Torvalds make source code open.'' 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds Read <http://www.namesys.com/> to learn more about reiserfs. 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds If you like it, you can pay us to add new features to it that you 3011da177e4SLinus Torvalds need, buy a support contract, or pay us to port it to another OS. 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvaldsconfig REISERFS_CHECK 3041da177e4SLinus Torvalds bool "Enable reiserfs debug mode" 3051da177e4SLinus Torvalds depends on REISERFS_FS 3061da177e4SLinus Torvalds help 3071da177e4SLinus Torvalds If you set this to Y, then ReiserFS will perform every check it can 3081da177e4SLinus Torvalds possibly imagine of its internal consistency throughout its 3091da177e4SLinus Torvalds operation. It will also go substantially slower. More than once we 3101da177e4SLinus Torvalds have forgotten that this was on, and then gone despondent over the 3111da177e4SLinus Torvalds latest benchmarks.:-) Use of this option allows our team to go all 3121da177e4SLinus Torvalds out in checking for consistency when debugging without fear of its 3131da177e4SLinus Torvalds effect on end users. If you are on the verge of sending in a bug 3141da177e4SLinus Torvalds report, say Y and you might get a useful error message. Almost 3151da177e4SLinus Torvalds everyone should say N. 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvaldsconfig REISERFS_PROC_INFO 3181da177e4SLinus Torvalds bool "Stats in /proc/fs/reiserfs" 319880ebdc5SRandy Dunlap depends on REISERFS_FS && PROC_FS 3201da177e4SLinus Torvalds help 3211da177e4SLinus Torvalds Create under /proc/fs/reiserfs a hierarchy of files, displaying 3221da177e4SLinus Torvalds various ReiserFS statistics and internal data at the expense of 3231da177e4SLinus Torvalds making your kernel or module slightly larger (+8 KB). This also 3241da177e4SLinus Torvalds increases the amount of kernel memory required for each mount. 3251da177e4SLinus Torvalds Almost everyone but ReiserFS developers and people fine-tuning 3261da177e4SLinus Torvalds reiserfs or tracing problems should say N. 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvaldsconfig REISERFS_FS_XATTR 3291da177e4SLinus Torvalds bool "ReiserFS extended attributes" 3301da177e4SLinus Torvalds depends on REISERFS_FS 3311da177e4SLinus Torvalds help 3321da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 3331da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 3341da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 3351da177e4SLinus Torvalds 3361da177e4SLinus Torvalds If unsure, say N. 3371da177e4SLinus Torvalds 3381da177e4SLinus Torvaldsconfig REISERFS_FS_POSIX_ACL 3391da177e4SLinus Torvalds bool "ReiserFS POSIX Access Control Lists" 3401da177e4SLinus Torvalds depends on REISERFS_FS_XATTR 341b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 3421da177e4SLinus Torvalds help 3431da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 3441da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 3471da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvaldsconfig REISERFS_FS_SECURITY 3521da177e4SLinus Torvalds bool "ReiserFS Security Labels" 3531da177e4SLinus Torvalds depends on REISERFS_FS_XATTR 3541da177e4SLinus Torvalds help 3551da177e4SLinus Torvalds Security labels support alternative access control models 3561da177e4SLinus Torvalds implemented by security modules like SELinux. This option 3571da177e4SLinus Torvalds enables an extended attribute handler for file security 3581da177e4SLinus Torvalds labels in the ReiserFS filesystem. 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds If you are not using a security module that requires using 3611da177e4SLinus Torvalds extended attributes for file security labels, say N. 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvaldsconfig JFS_FS 3641da177e4SLinus Torvalds tristate "JFS filesystem support" 3651da177e4SLinus Torvalds select NLS 3661da177e4SLinus Torvalds help 3671da177e4SLinus Torvalds This is a port of IBM's Journaled Filesystem . More information is 3681da177e4SLinus Torvalds available in the file <file:Documentation/filesystems/jfs.txt>. 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds If you do not intend to use the JFS filesystem, say N. 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvaldsconfig JFS_POSIX_ACL 3731da177e4SLinus Torvalds bool "JFS POSIX Access Control Lists" 3741da177e4SLinus Torvalds depends on JFS_FS 375b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 3761da177e4SLinus Torvalds help 3771da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 3781da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 3811da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvaldsconfig JFS_SECURITY 3861da177e4SLinus Torvalds bool "JFS Security Labels" 3871da177e4SLinus Torvalds depends on JFS_FS 3881da177e4SLinus Torvalds help 3891da177e4SLinus Torvalds Security labels support alternative access control models 3901da177e4SLinus Torvalds implemented by security modules like SELinux. This option 3911da177e4SLinus Torvalds enables an extended attribute handler for file security 3921da177e4SLinus Torvalds labels in the jfs filesystem. 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds If you are not using a security module that requires using 3951da177e4SLinus Torvalds extended attributes for file security labels, say N. 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvaldsconfig JFS_DEBUG 3981da177e4SLinus Torvalds bool "JFS debugging" 3991da177e4SLinus Torvalds depends on JFS_FS 4001da177e4SLinus Torvalds help 4011da177e4SLinus Torvalds If you are experiencing any problems with the JFS filesystem, say 4021da177e4SLinus Torvalds Y here. This will result in additional debugging messages to be 4031da177e4SLinus Torvalds written to the system log. Under normal circumstances, this 4041da177e4SLinus Torvalds results in very little overhead. 4051da177e4SLinus Torvalds 4061da177e4SLinus Torvaldsconfig JFS_STATISTICS 4071da177e4SLinus Torvalds bool "JFS statistics" 4081da177e4SLinus Torvalds depends on JFS_FS 4091da177e4SLinus Torvalds help 4101da177e4SLinus Torvalds Enabling this option will cause statistics from the JFS file system 4111da177e4SLinus Torvalds to be made available to the user in the /proc/fs/jfs/ directory. 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvaldsconfig FS_POSIX_ACL 4141da177e4SLinus Torvalds# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs) 4151da177e4SLinus Torvalds# 4161da177e4SLinus Torvalds# NOTE: you can implement Posix ACLs without these helpers (XFS does). 4171da177e4SLinus Torvalds# Never use this symbol for ifdefs. 4181da177e4SLinus Torvalds# 4191da177e4SLinus Torvalds bool 420b84c2157SAndreas Gruenbacher default n 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvaldssource "fs/xfs/Kconfig" 423f7825dcfSDavid Teiglandsource "fs/gfs2/Kconfig" 4241da177e4SLinus Torvalds 425b4e40a51SMark Fashehconfig OCFS2_FS 42602ed8416SMark Fasheh tristate "OCFS2 file system support" 42702ed8416SMark Fasheh depends on NET && SYSFS 428b4e40a51SMark Fasheh select CONFIGFS_FS 429b4e40a51SMark Fasheh select JBD 430b4e40a51SMark Fasheh select CRC32 431b4e40a51SMark Fasheh help 432b4e40a51SMark Fasheh OCFS2 is a general purpose extent based shared disk cluster file 433b4e40a51SMark Fasheh system with many similarities to ext3. It supports 64 bit inode 434b4e40a51SMark Fasheh numbers, and has automatically extending metadata groups which may 435b4e40a51SMark Fasheh also make it attractive for non-clustered use. 436b4e40a51SMark Fasheh 437b4e40a51SMark Fasheh You'll want to install the ocfs2-tools package in order to at least 438b4e40a51SMark Fasheh get "mount.ocfs2". 439b4e40a51SMark Fasheh 440b4e40a51SMark Fasheh Project web page: http://oss.oracle.com/projects/ocfs2 441b4e40a51SMark Fasheh Tools web page: http://oss.oracle.com/projects/ocfs2-tools 442b4e40a51SMark Fasheh OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/ 443b4e40a51SMark Fasheh 4441252c434SMark Fasheh For more information on OCFS2, see the file 4451252c434SMark Fasheh <file:Documentation/filesystems/ocfs2.txt>. 446b4e40a51SMark Fasheh 4472b388c67SJoel Beckerconfig OCFS2_DEBUG_MASKLOG 4482b388c67SJoel Becker bool "OCFS2 logging support" 4492b388c67SJoel Becker depends on OCFS2_FS 4502b388c67SJoel Becker default y 4512b388c67SJoel Becker help 4522b388c67SJoel Becker The ocfs2 filesystem has an extensive logging system. The system 4532b388c67SJoel Becker allows selection of events to log via files in /sys/o2cb/logmask/. 4542b388c67SJoel Becker This option will enlarge your kernel, but it allows debugging of 4552b388c67SJoel Becker ocfs2 filesystem issues. 4562b388c67SJoel Becker 4575a58c3efSJan Karaconfig OCFS2_DEBUG_FS 4585a58c3efSJan Kara bool "OCFS2 expensive checks" 4595a58c3efSJan Kara depends on OCFS2_FS 4605a58c3efSJan Kara default n 4615a58c3efSJan Kara help 4625a58c3efSJan Kara This option will enable expensive consistency checks. Enable 4635a58c3efSJan Kara this option for debugging only as it is likely to decrease 4645a58c3efSJan Kara performance of the filesystem. 4655a58c3efSJan Kara 4661da177e4SLinus Torvaldsconfig MINIX_FS 4671da177e4SLinus Torvalds tristate "Minix fs support" 4681da177e4SLinus Torvalds help 4691da177e4SLinus Torvalds Minix is a simple operating system used in many classes about OS's. 4701da177e4SLinus Torvalds The minix file system (method to organize files on a hard disk 4711da177e4SLinus Torvalds partition or a floppy disk) was the original file system for Linux, 4721da177e4SLinus Torvalds but has been superseded by the second extended file system ext2fs. 4731da177e4SLinus Torvalds You don't want to use the minix file system on your hard disk 4741da177e4SLinus Torvalds because of certain built-in restrictions, but it is sometimes found 4751da177e4SLinus Torvalds on older Linux floppy disks. This option will enlarge your kernel 4761da177e4SLinus Torvalds by about 28 KB. If unsure, say N. 4771da177e4SLinus Torvalds 4781da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 4791da177e4SLinus Torvalds module will be called minix. Note that the file system of your root 4801da177e4SLinus Torvalds partition (the one containing the directory /) cannot be compiled as 4811da177e4SLinus Torvalds a module. 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvaldsconfig ROMFS_FS 4841da177e4SLinus Torvalds tristate "ROM file system support" 4851da177e4SLinus Torvalds ---help--- 4861da177e4SLinus Torvalds This is a very small read-only file system mainly intended for 4871da177e4SLinus Torvalds initial ram disks of installation disks, but it could be used for 4881da177e4SLinus Torvalds other read-only media as well. Read 4891da177e4SLinus Torvalds <file:Documentation/filesystems/romfs.txt> for details. 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 4921da177e4SLinus Torvalds module will be called romfs. Note that the file system of your 4931da177e4SLinus Torvalds root partition (the one containing the directory /) cannot be a 4941da177e4SLinus Torvalds module. 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 4971da177e4SLinus Torvalds answer N. 4981da177e4SLinus Torvalds 4999361401eSDavid Howellsendif 5009361401eSDavid Howells 5010eeca283SRobert Loveconfig INOTIFY 5020eeca283SRobert Love bool "Inotify file change notification support" 5030eeca283SRobert Love default y 5040eeca283SRobert Love ---help--- 5052d9048e2SAmy Griffis Say Y here to enable inotify support. Inotify is a file change 5062d9048e2SAmy Griffis notification system and a replacement for dnotify. Inotify fixes 5072d9048e2SAmy Griffis numerous shortcomings in dnotify and introduces several new features 5082d9048e2SAmy Griffis including multiple file events, one-shot support, and unmount 5093de11748SRobert Love notification. 5103de11748SRobert Love 511e403149cSDirk Hohndel For more information, see <file:Documentation/filesystems/inotify.txt> 5120eeca283SRobert Love 5130eeca283SRobert Love If unsure, say Y. 5140eeca283SRobert Love 5152d9048e2SAmy Griffisconfig INOTIFY_USER 5162d9048e2SAmy Griffis bool "Inotify support for userspace" 5172d9048e2SAmy Griffis depends on INOTIFY 5182d9048e2SAmy Griffis default y 5192d9048e2SAmy Griffis ---help--- 5202d9048e2SAmy Griffis Say Y here to enable inotify support for userspace, including the 5212d9048e2SAmy Griffis associated system calls. Inotify allows monitoring of both files and 5222d9048e2SAmy Griffis directories via a single open fd. Events are read from the file 5232d9048e2SAmy Griffis descriptor, which is also select()- and poll()-able. 5242d9048e2SAmy Griffis 525e403149cSDirk Hohndel For more information, see <file:Documentation/filesystems/inotify.txt> 5262d9048e2SAmy Griffis 5272d9048e2SAmy Griffis If unsure, say Y. 5282d9048e2SAmy Griffis 5291da177e4SLinus Torvaldsconfig QUOTA 5301da177e4SLinus Torvalds bool "Quota support" 5311da177e4SLinus Torvalds help 5321da177e4SLinus Torvalds If you say Y here, you will be able to set per user limits for disk 5331da177e4SLinus Torvalds usage (also called disk quotas). Currently, it works for the 5341da177e4SLinus Torvalds ext2, ext3, and reiserfs file system. ext3 also supports journalled 5351da177e4SLinus Torvalds quotas for which you don't need to run quotacheck(8) after an unclean 536919532a5SAdrian Bunk shutdown. 537919532a5SAdrian Bunk For further details, read the Quota mini-HOWTO, available from 5381da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or the documentation provided 5391da177e4SLinus Torvalds with the quota tools. Probably the quota support is only useful for 5401da177e4SLinus Torvalds multi user systems. If unsure, say N. 5411da177e4SLinus Torvalds 5428e893469SJan Karaconfig QUOTA_NETLINK_INTERFACE 5438e893469SJan Kara bool "Report quota messages through netlink interface" 5448e893469SJan Kara depends on QUOTA && NET 5458e893469SJan Kara help 5468e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5478e893469SJan Kara hardlimit, etc.) will be reported through netlink interface. If unsure, 5488e893469SJan Kara say Y. 5498e893469SJan Kara 5508e893469SJan Karaconfig PRINT_QUOTA_WARNING 5518e893469SJan Kara bool "Print quota warnings to console (OBSOLETE)" 5528e893469SJan Kara depends on QUOTA 5538e893469SJan Kara default y 5548e893469SJan Kara help 5558e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5568e893469SJan Kara hardlimit, etc.) will be printed to the process' controlling terminal. 5578e893469SJan Kara Note that this behavior is currently deprecated and may go away in 5588e893469SJan Kara future. Please use notification via netlink socket instead. 5598e893469SJan Kara 5601da177e4SLinus Torvaldsconfig QFMT_V1 5611da177e4SLinus Torvalds tristate "Old quota format support" 5621da177e4SLinus Torvalds depends on QUOTA 5631da177e4SLinus Torvalds help 5641da177e4SLinus Torvalds This quota format was (is) used by kernels earlier than 2.4.22. If 5651da177e4SLinus Torvalds you have quota working and you don't want to convert to new quota 5661da177e4SLinus Torvalds format say Y here. 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvaldsconfig QFMT_V2 5691da177e4SLinus Torvalds tristate "Quota format v2 support" 5701da177e4SLinus Torvalds depends on QUOTA 5711da177e4SLinus Torvalds help 5721da177e4SLinus Torvalds This quota format allows using quotas with 32-bit UIDs/GIDs. If you 573919532a5SAdrian Bunk need this functionality say Y here. 5741da177e4SLinus Torvalds 5751da177e4SLinus Torvaldsconfig QUOTACTL 5761da177e4SLinus Torvalds bool 5771da177e4SLinus Torvalds depends on XFS_QUOTA || QUOTA 5781da177e4SLinus Torvalds default y 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvaldsconfig DNOTIFY 5817e341fa1SAdrian Bunk bool "Dnotify support" 5821da177e4SLinus Torvalds default y 5831da177e4SLinus Torvalds help 5841da177e4SLinus Torvalds Dnotify is a directory-based per-fd file change notification system 5851da177e4SLinus Torvalds that uses signals to communicate events to user-space. There exist 5861da177e4SLinus Torvalds superior alternatives, but some applications may still rely on 5871da177e4SLinus Torvalds dnotify. 5881da177e4SLinus Torvalds 5897e341fa1SAdrian Bunk If unsure, say Y. 5901da177e4SLinus Torvalds 5911da177e4SLinus Torvaldsconfig AUTOFS_FS 5921da177e4SLinus Torvalds tristate "Kernel automounter support" 5931da177e4SLinus Torvalds help 5941da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 5951da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 5961da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 5971da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds To use the automounter you need the user-space tools from the autofs 6001da177e4SLinus Torvalds package; you can find the location in <file:Documentation/Changes>. 6011da177e4SLinus Torvalds You also want to answer Y to "NFS file system support", below. 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds If you want to use the newer version of the automounter with more 6041da177e4SLinus Torvalds features, say N here and say Y to "Kernel automounter v4 support", 6051da177e4SLinus Torvalds below. 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6081da177e4SLinus Torvalds called autofs. 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network, you 6111da177e4SLinus Torvalds probably do not need an automounter, and can say N here. 6121da177e4SLinus Torvalds 6131da177e4SLinus Torvaldsconfig AUTOFS4_FS 6141da177e4SLinus Torvalds tristate "Kernel automounter version 4 support (also supports v3)" 6151da177e4SLinus Torvalds help 6161da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 6171da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 6181da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 6191da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds To use the automounter you need the user-space tools from 6221da177e4SLinus Torvalds <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 6231da177e4SLinus Torvalds want to answer Y to "NFS file system support", below. 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6261da177e4SLinus Torvalds called autofs4. You will need to add "alias autofs autofs4" to your 6271da177e4SLinus Torvalds modules configuration file. 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network or 6301da177e4SLinus Torvalds don't have a laptop which needs to dynamically reconfigure to the 6311da177e4SLinus Torvalds local network, you probably do not need an automounter, and can say 6321da177e4SLinus Torvalds N here. 6331da177e4SLinus Torvalds 63404578f17SMiklos Szerediconfig FUSE_FS 63504578f17SMiklos Szeredi tristate "Filesystem in Userspace support" 63604578f17SMiklos Szeredi help 63704578f17SMiklos Szeredi With FUSE it is possible to implement a fully functional filesystem 63804578f17SMiklos Szeredi in a userspace program. 63904578f17SMiklos Szeredi 64004578f17SMiklos Szeredi There's also companion library: libfuse. This library along with 64104578f17SMiklos Szeredi utilities is available from the FUSE homepage: 64204578f17SMiklos Szeredi <http://fuse.sourceforge.net/> 64304578f17SMiklos Szeredi 644909021eaSMiklos Szeredi See <file:Documentation/filesystems/fuse.txt> for more information. 645909021eaSMiklos Szeredi See <file:Documentation/Changes> for needed library/utility version. 646909021eaSMiklos Szeredi 64704578f17SMiklos Szeredi If you want to develop a userspace FS, or if you want to use 64804578f17SMiklos Szeredi a filesystem based on FUSE, answer Y or M. 64904578f17SMiklos Szeredi 650f2fbc6c2SRandy Dunlapconfig GENERIC_ACL 651f2fbc6c2SRandy Dunlap bool 652f2fbc6c2SRandy Dunlap select FS_POSIX_ACL 653f2fbc6c2SRandy Dunlap 6549361401eSDavid Howellsif BLOCK 6551da177e4SLinus Torvaldsmenu "CD-ROM/DVD Filesystems" 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvaldsconfig ISO9660_FS 6581da177e4SLinus Torvalds tristate "ISO 9660 CDROM file system support" 6591da177e4SLinus Torvalds help 6601da177e4SLinus Torvalds This is the standard file system used on CD-ROMs. It was previously 6611da177e4SLinus Torvalds known as "High Sierra File System" and is called "hsfs" on other 6621da177e4SLinus Torvalds Unix systems. The so-called Rock-Ridge extensions which allow for 6631da177e4SLinus Torvalds long Unix filenames and symbolic links are also supported by this 6641da177e4SLinus Torvalds driver. If you have a CD-ROM drive and want to do more with it than 6651da177e4SLinus Torvalds just listen to audio CDs and watch its LEDs, say Y (and read 6661da177e4SLinus Torvalds <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 6671da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>), thereby 6681da177e4SLinus Torvalds enlarging your kernel by about 27 KB; otherwise say N. 6691da177e4SLinus Torvalds 6701da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 6711da177e4SLinus Torvalds module will be called isofs. 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvaldsconfig JOLIET 6741da177e4SLinus Torvalds bool "Microsoft Joliet CDROM extensions" 6751da177e4SLinus Torvalds depends on ISO9660_FS 6761da177e4SLinus Torvalds select NLS 6771da177e4SLinus Torvalds help 6781da177e4SLinus Torvalds Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 6791da177e4SLinus Torvalds which allows for long filenames in unicode format (unicode is the 6801da177e4SLinus Torvalds new 16 bit character code, successor to ASCII, which encodes the 6811da177e4SLinus Torvalds characters of almost all languages of the world; see 6821da177e4SLinus Torvalds <http://www.unicode.org/> for more information). Say Y here if you 6831da177e4SLinus Torvalds want to be able to read Joliet CD-ROMs under Linux. 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvaldsconfig ZISOFS 6861da177e4SLinus Torvalds bool "Transparent decompression extension" 6871da177e4SLinus Torvalds depends on ISO9660_FS 6881da177e4SLinus Torvalds select ZLIB_INFLATE 6891da177e4SLinus Torvalds help 6901da177e4SLinus Torvalds This is a Linux-specific extension to RockRidge which lets you store 6911da177e4SLinus Torvalds data in compressed form on a CD-ROM and have it transparently 6921da177e4SLinus Torvalds decompressed when the CD-ROM is accessed. See 6931da177e4SLinus Torvalds <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 6941da177e4SLinus Torvalds necessary to create such a filesystem. Say Y here if you want to be 6951da177e4SLinus Torvalds able to read such compressed CD-ROMs. 6961da177e4SLinus Torvalds 6971da177e4SLinus Torvaldsconfig UDF_FS 6981da177e4SLinus Torvalds tristate "UDF file system support" 6991da177e4SLinus Torvalds help 7001da177e4SLinus Torvalds This is the new file system used on some CD-ROMs and DVDs. Say Y if 7011da177e4SLinus Torvalds you intend to mount DVD discs or CDRW's written in packet mode, or 7021da177e4SLinus Torvalds if written to by other UDF utilities, such as DirectCD. 7031da177e4SLinus Torvalds Please read <file:Documentation/filesystems/udf.txt>. 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 7061da177e4SLinus Torvalds module will be called udf. 7071da177e4SLinus Torvalds 7081da177e4SLinus Torvalds If unsure, say N. 7091da177e4SLinus Torvalds 7101da177e4SLinus Torvaldsconfig UDF_NLS 7111da177e4SLinus Torvalds bool 7121da177e4SLinus Torvalds default y 7131da177e4SLinus Torvalds depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvaldsendmenu 7169361401eSDavid Howellsendif 7171da177e4SLinus Torvalds 7189361401eSDavid Howellsif BLOCK 7191da177e4SLinus Torvaldsmenu "DOS/FAT/NT Filesystems" 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvaldsconfig FAT_FS 7221da177e4SLinus Torvalds tristate 7231da177e4SLinus Torvalds select NLS 7241da177e4SLinus Torvalds help 7251da177e4SLinus Torvalds If you want to use one of the FAT-based file systems (the MS-DOS and 7261da177e4SLinus Torvalds VFAT (Windows 95) file systems), then you must say Y or M here 7271da177e4SLinus Torvalds to include FAT support. You will then be able to mount partitions or 7281da177e4SLinus Torvalds diskettes with FAT-based file systems and transparently access the 7291da177e4SLinus Torvalds files on them, i.e. MSDOS files will look and behave just like all 7301da177e4SLinus Torvalds other Unix files. 7311da177e4SLinus Torvalds 7321da177e4SLinus Torvalds This FAT support is not a file system in itself, it only provides 7331da177e4SLinus Torvalds the foundation for the other file systems. You will have to say Y or 7341da177e4SLinus Torvalds M to at least one of "MSDOS fs support" or "VFAT fs support" in 7351da177e4SLinus Torvalds order to make use of it. 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds Another way to read and write MSDOS floppies and hard drive 7381da177e4SLinus Torvalds partitions from within Linux (but not transparently) is with the 7391da177e4SLinus Torvalds mtools ("man mtools") program suite. You don't need to say Y here in 7401da177e4SLinus Torvalds order to do that. 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds If you need to move large files on floppies between a DOS and a 7431da177e4SLinus Torvalds Linux box, say Y here, mount the floppy under Linux with an MSDOS 7441da177e4SLinus Torvalds file system and use GNU tar's M option. GNU tar is a program 7451da177e4SLinus Torvalds available for Unix and DOS ("man tar" or "info tar"). 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds The FAT support will enlarge your kernel by about 37 KB. If unsure, 7481da177e4SLinus Torvalds say Y. 7491da177e4SLinus Torvalds 7501da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 7511da177e4SLinus Torvalds fat. Note that if you compile the FAT support as a module, you 7521da177e4SLinus Torvalds cannot compile any of the FAT-based file systems into the kernel 7531da177e4SLinus Torvalds -- they will have to be modules as well. 7541da177e4SLinus Torvalds 7551da177e4SLinus Torvaldsconfig MSDOS_FS 7561da177e4SLinus Torvalds tristate "MSDOS fs support" 7571da177e4SLinus Torvalds select FAT_FS 7581da177e4SLinus Torvalds help 7591da177e4SLinus Torvalds This allows you to mount MSDOS partitions of your hard drive (unless 7601da177e4SLinus Torvalds they are compressed; to access compressed MSDOS partitions under 7611da177e4SLinus Torvalds Linux, you can either use the DOS emulator DOSEMU, described in the 7621da177e4SLinus Torvalds DOSEMU-HOWTO, available from 7631da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 7641da177e4SLinus Torvalds <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 7651da177e4SLinus Torvalds intend to use dosemu with a non-compressed MSDOS partition, say Y 7661da177e4SLinus Torvalds here) and MSDOS floppies. This means that file access becomes 7671da177e4SLinus Torvalds transparent, i.e. the MSDOS files look and behave just like all 7681da177e4SLinus Torvalds other Unix files. 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds If you have Windows 95 or Windows NT installed on your MSDOS 7711da177e4SLinus Torvalds partitions, you should use the VFAT file system (say Y to "VFAT fs 7721da177e4SLinus Torvalds support" below), or you will not be able to see the long filenames 7731da177e4SLinus Torvalds generated by Windows 95 / Windows NT. 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds This option will enlarge your kernel by about 7 KB. If unsure, 7761da177e4SLinus Torvalds answer Y. This will only work if you said Y to "DOS FAT fs support" 7771da177e4SLinus Torvalds as well. To compile this as a module, choose M here: the module will 7781da177e4SLinus Torvalds be called msdos. 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvaldsconfig VFAT_FS 7811da177e4SLinus Torvalds tristate "VFAT (Windows-95) fs support" 7821da177e4SLinus Torvalds select FAT_FS 7831da177e4SLinus Torvalds help 7841da177e4SLinus Torvalds This option provides support for normal Windows file systems with 7851da177e4SLinus Torvalds long filenames. That includes non-compressed FAT-based file systems 7861da177e4SLinus Torvalds used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 7871da177e4SLinus Torvalds programs from the mtools package. 7881da177e4SLinus Torvalds 7891da177e4SLinus Torvalds The VFAT support enlarges your kernel by about 10 KB and it only 7901da177e4SLinus Torvalds works if you said Y to the "DOS FAT fs support" above. Please read 7911da177e4SLinus Torvalds the file <file:Documentation/filesystems/vfat.txt> for details. If 7921da177e4SLinus Torvalds unsure, say Y. 7931da177e4SLinus Torvalds 7941da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 7951da177e4SLinus Torvalds vfat. 7961da177e4SLinus Torvalds 7971da177e4SLinus Torvaldsconfig FAT_DEFAULT_CODEPAGE 7981da177e4SLinus Torvalds int "Default codepage for FAT" 7991da177e4SLinus Torvalds depends on MSDOS_FS || VFAT_FS 8001da177e4SLinus Torvalds default 437 8011da177e4SLinus Torvalds help 8021da177e4SLinus Torvalds This option should be set to the codepage of your FAT filesystems. 8031da177e4SLinus Torvalds It can be overridden with the "codepage" mount option. 8041da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvaldsconfig FAT_DEFAULT_IOCHARSET 8071da177e4SLinus Torvalds string "Default iocharset for FAT" 8081da177e4SLinus Torvalds depends on VFAT_FS 8091da177e4SLinus Torvalds default "iso8859-1" 8101da177e4SLinus Torvalds help 8111da177e4SLinus Torvalds Set this to the default input/output character set you'd 8121da177e4SLinus Torvalds like FAT to use. It should probably match the character set 8131da177e4SLinus Torvalds that most of your FAT filesystems use, and can be overridden 8141da177e4SLinus Torvalds with the "iocharset" mount option for FAT filesystems. 8151da177e4SLinus Torvalds Note that "utf8" is not recommended for FAT filesystems. 8161da177e4SLinus Torvalds If unsure, you shouldn't set "utf8" here. 8171da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8181da177e4SLinus Torvalds 8191da177e4SLinus Torvaldsconfig NTFS_FS 8201da177e4SLinus Torvalds tristate "NTFS file system support" 8211da177e4SLinus Torvalds select NLS 8221da177e4SLinus Torvalds help 8231da177e4SLinus Torvalds NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds Saying Y or M here enables read support. There is partial, but 8261da177e4SLinus Torvalds safe, write support available. For write support you must also 8271da177e4SLinus Torvalds say Y to "NTFS write support" below. 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds There are also a number of user-space tools available, called 8301da177e4SLinus Torvalds ntfsprogs. These include ntfsundelete and ntfsresize, that work 8311da177e4SLinus Torvalds without NTFS support enabled in the kernel. 8321da177e4SLinus Torvalds 8331da177e4SLinus Torvalds This is a rewrite from scratch of Linux NTFS support and replaced 8341da177e4SLinus Torvalds the old NTFS code starting with Linux 2.5.11. A backport to 8351da177e4SLinus Torvalds the Linux 2.4 kernel series is separately available as a patch 8361da177e4SLinus Torvalds from the project web site. 8371da177e4SLinus Torvalds 8381da177e4SLinus Torvalds For more information see <file:Documentation/filesystems/ntfs.txt> 8391da177e4SLinus Torvalds and <http://linux-ntfs.sourceforge.net/>. 8401da177e4SLinus Torvalds 8411da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 8421da177e4SLinus Torvalds module will be called ntfs. 8431da177e4SLinus Torvalds 8441da177e4SLinus Torvalds If you are not using Windows NT, 2000, XP or 2003 in addition to 8451da177e4SLinus Torvalds Linux on your computer it is safe to say N. 8461da177e4SLinus Torvalds 8471da177e4SLinus Torvaldsconfig NTFS_DEBUG 8481da177e4SLinus Torvalds bool "NTFS debugging support" 8491da177e4SLinus Torvalds depends on NTFS_FS 8501da177e4SLinus Torvalds help 8511da177e4SLinus Torvalds If you are experiencing any problems with the NTFS file system, say 8521da177e4SLinus Torvalds Y here. This will result in additional consistency checks to be 8531da177e4SLinus Torvalds performed by the driver as well as additional debugging messages to 8541da177e4SLinus Torvalds be written to the system log. Note that debugging messages are 8551da177e4SLinus Torvalds disabled by default. To enable them, supply the option debug_msgs=1 8561da177e4SLinus Torvalds at the kernel command line when booting the kernel or as an option 8571da177e4SLinus Torvalds to insmod when loading the ntfs module. Once the driver is active, 8581da177e4SLinus Torvalds you can enable debugging messages by doing (as root): 8591da177e4SLinus Torvalds echo 1 > /proc/sys/fs/ntfs-debug 8601da177e4SLinus Torvalds Replacing the "1" with "0" would disable debug messages. 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds If you leave debugging messages disabled, this results in little 8631da177e4SLinus Torvalds overhead, but enabling debug messages results in very significant 8641da177e4SLinus Torvalds slowdown of the system. 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds When reporting bugs, please try to have available a full dump of 8671da177e4SLinus Torvalds debugging messages while the misbehaviour was occurring. 8681da177e4SLinus Torvalds 8691da177e4SLinus Torvaldsconfig NTFS_RW 8701da177e4SLinus Torvalds bool "NTFS write support" 8711da177e4SLinus Torvalds depends on NTFS_FS 8721da177e4SLinus Torvalds help 8731da177e4SLinus Torvalds This enables the partial, but safe, write support in the NTFS driver. 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds The only supported operation is overwriting existing files, without 8761da177e4SLinus Torvalds changing the file length. No file or directory creation, deletion or 8771da177e4SLinus Torvalds renaming is possible. Note only non-resident files can be written to 8781da177e4SLinus Torvalds so you may find that some very small files (<500 bytes or so) cannot 8791da177e4SLinus Torvalds be written to. 8801da177e4SLinus Torvalds 8811da177e4SLinus Torvalds While we cannot guarantee that it will not damage any data, we have 8821da177e4SLinus Torvalds so far not received a single report where the driver would have 8831da177e4SLinus Torvalds damaged someones data so we assume it is perfectly safe to use. 8841da177e4SLinus Torvalds 8851da177e4SLinus Torvalds Note: While write support is safe in this version (a rewrite from 8861da177e4SLinus Torvalds scratch of the NTFS support), it should be noted that the old NTFS 8871da177e4SLinus Torvalds write support, included in Linux 2.5.10 and before (since 1997), 8881da177e4SLinus Torvalds is not safe. 8891da177e4SLinus Torvalds 8901da177e4SLinus Torvalds This is currently useful with TopologiLinux. TopologiLinux is run 8911da177e4SLinus Torvalds on top of any DOS/Microsoft Windows system without partitioning your 8921da177e4SLinus Torvalds hard disk. Unlike other Linux distributions TopologiLinux does not 8931da177e4SLinus Torvalds need its own partition. For more information see 8941da177e4SLinus Torvalds <http://topologi-linux.sourceforge.net/> 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds It is perfectly safe to say N here. 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvaldsendmenu 8999361401eSDavid Howellsendif 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvaldsmenu "Pseudo filesystems" 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvaldsconfig PROC_FS 90469755652SH. Peter Anvin bool "/proc file system support" if EMBEDDED 90569755652SH. Peter Anvin default y 9061da177e4SLinus Torvalds help 9071da177e4SLinus Torvalds This is a virtual file system providing information about the status 9081da177e4SLinus Torvalds of the system. "Virtual" means that it doesn't take up any space on 9091da177e4SLinus Torvalds your hard disk: the files are created on the fly by the kernel when 9101da177e4SLinus Torvalds you try to access them. Also, you cannot read the files with older 9111da177e4SLinus Torvalds version of the program less: you need to use more or cat. 9121da177e4SLinus Torvalds 9131da177e4SLinus Torvalds It's totally cool; for example, "cat /proc/interrupts" gives 9141da177e4SLinus Torvalds information about what the different IRQs are used for at the moment 9151da177e4SLinus Torvalds (there is a small number of Interrupt ReQuest lines in your computer 9161da177e4SLinus Torvalds that are used by the attached devices to gain the CPU's attention -- 9171da177e4SLinus Torvalds often a source of trouble if two devices are mistakenly configured 9181da177e4SLinus Torvalds to use the same IRQ). The program procinfo to display some 9191da177e4SLinus Torvalds information about your system gathered from the /proc file system. 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds Before you can use the /proc file system, it has to be mounted, 9221da177e4SLinus Torvalds meaning it has to be given a location in the directory hierarchy. 9231da177e4SLinus Torvalds That location should be /proc. A command such as "mount -t proc proc 9241da177e4SLinus Torvalds /proc" or the equivalent line in /etc/fstab does the job. 9251da177e4SLinus Torvalds 9261da177e4SLinus Torvalds The /proc file system is explained in the file 9271da177e4SLinus Torvalds <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 9281da177e4SLinus Torvalds ("man 5 proc"). 9291da177e4SLinus Torvalds 9301da177e4SLinus Torvalds This option will enlarge your kernel by about 67 KB. Several 9311da177e4SLinus Torvalds programs depend on this, so everyone should say Y here. 9321da177e4SLinus Torvalds 9331da177e4SLinus Torvaldsconfig PROC_KCORE 9341da177e4SLinus Torvalds bool "/proc/kcore support" if !ARM 9351da177e4SLinus Torvalds depends on PROC_FS && MMU 9361da177e4SLinus Torvalds 937666bfddbSVivek Goyalconfig PROC_VMCORE 938666bfddbSVivek Goyal bool "/proc/vmcore support (EXPERIMENTAL)" 93905970d47SManeesh Soni depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP 94068250ba5SVivek Goyal default y 941666bfddbSVivek Goyal help 942666bfddbSVivek Goyal Exports the dump image of crashed kernel in ELF format. 943666bfddbSVivek Goyal 944b89a8171SEric W. Biedermanconfig PROC_SYSCTL 945b89a8171SEric W. Biederman bool "Sysctl support (/proc/sys)" if EMBEDDED 946b89a8171SEric W. Biederman depends on PROC_FS 947b89a8171SEric W. Biederman select SYSCTL 948b89a8171SEric W. Biederman default y 949b89a8171SEric W. Biederman ---help--- 950b89a8171SEric W. Biederman The sysctl interface provides a means of dynamically changing 951b89a8171SEric W. Biederman certain kernel parameters and variables on the fly without requiring 952b89a8171SEric W. Biederman a recompile of the kernel or reboot of the system. The primary 953b89a8171SEric W. Biederman interface is through /proc/sys. If you say Y here a tree of 954b89a8171SEric W. Biederman modifiable sysctl entries will be generated beneath the 955b89a8171SEric W. Biederman /proc/sys directory. They are explained in the files 956b89a8171SEric W. Biederman in <file:Documentation/sysctl/>. Note that enabling this 957b89a8171SEric W. Biederman option will enlarge the kernel by at least 8 KB. 958b89a8171SEric W. Biederman 959b89a8171SEric W. Biederman As it is generally a good thing, you should say Y here unless 960b89a8171SEric W. Biederman building a kernel for install/rescue disks or your system is very 961b89a8171SEric W. Biederman limited in memory. 962b89a8171SEric W. Biederman 9631da177e4SLinus Torvaldsconfig SYSFS 9641da177e4SLinus Torvalds bool "sysfs file system support" if EMBEDDED 9651da177e4SLinus Torvalds default y 9661da177e4SLinus Torvalds help 9671da177e4SLinus Torvalds The sysfs filesystem is a virtual filesystem that the kernel uses to 9681da177e4SLinus Torvalds export internal kernel objects, their attributes, and their 9691da177e4SLinus Torvalds relationships to one another. 9701da177e4SLinus Torvalds 9711da177e4SLinus Torvalds Users can use sysfs to ascertain useful information about the running 9721da177e4SLinus Torvalds kernel, such as the devices the kernel has discovered on each bus and 9731da177e4SLinus Torvalds which driver each is bound to. sysfs can also be used to tune devices 9741da177e4SLinus Torvalds and other kernel subsystems. 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds Some system agents rely on the information in sysfs to operate. 9771da177e4SLinus Torvalds /sbin/hotplug uses device and object attributes in sysfs to assist in 97803a67a46SJan Engelhardt delegating policy decisions, like persistently naming devices. 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvalds sysfs is currently used by the block subsystem to mount the root 9811da177e4SLinus Torvalds partition. If sysfs is disabled you must specify the boot device on 9821da177e4SLinus Torvalds the kernel boot command line via its major and minor numbers. For 9831da177e4SLinus Torvalds example, "root=03:01" for /dev/hda1. 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds Designers of embedded systems may wish to say N here to conserve space. 9861da177e4SLinus Torvalds 9871da177e4SLinus Torvaldsconfig TMPFS 9881da177e4SLinus Torvalds bool "Virtual memory file system support (former shm fs)" 9891da177e4SLinus Torvalds help 9901da177e4SLinus Torvalds Tmpfs is a file system which keeps all files in virtual memory. 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvalds Everything in tmpfs is temporary in the sense that no files will be 9931da177e4SLinus Torvalds created on your hard drive. The files live in memory and swap 9941da177e4SLinus Torvalds space. If you unmount a tmpfs instance, everything stored therein is 9951da177e4SLinus Torvalds lost. 9961da177e4SLinus Torvalds 9971da177e4SLinus Torvalds See <file:Documentation/filesystems/tmpfs.txt> for details. 9981da177e4SLinus Torvalds 99939f0247dSAndreas Gruenbacherconfig TMPFS_POSIX_ACL 100039f0247dSAndreas Gruenbacher bool "Tmpfs POSIX Access Control Lists" 100139f0247dSAndreas Gruenbacher depends on TMPFS 100239f0247dSAndreas Gruenbacher select GENERIC_ACL 100339f0247dSAndreas Gruenbacher help 100439f0247dSAndreas Gruenbacher POSIX Access Control Lists (ACLs) support permissions for users and 100539f0247dSAndreas Gruenbacher groups beyond the owner/group/world scheme. 100639f0247dSAndreas Gruenbacher 100739f0247dSAndreas Gruenbacher To learn more about Access Control Lists, visit the POSIX ACLs for 100839f0247dSAndreas Gruenbacher Linux website <http://acl.bestbits.at/>. 100939f0247dSAndreas Gruenbacher 101039f0247dSAndreas Gruenbacher If you don't know what Access Control Lists are, say N. 101139f0247dSAndreas Gruenbacher 10121da177e4SLinus Torvaldsconfig HUGETLBFS 10131da177e4SLinus Torvalds bool "HugeTLB file system support" 1014dd950587SPaul Mundt depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN 1015dda27d1aSArthur Othieno help 1016dda27d1aSArthur Othieno hugetlbfs is a filesystem backing for HugeTLB pages, based on 1017dda27d1aSArthur Othieno ramfs. For architectures that support it, say Y here and read 1018dda27d1aSArthur Othieno <file:Documentation/vm/hugetlbpage.txt> for details. 1019dda27d1aSArthur Othieno 1020dda27d1aSArthur Othieno If unsure, say N. 10211da177e4SLinus Torvalds 10221da177e4SLinus Torvaldsconfig HUGETLB_PAGE 10231da177e4SLinus Torvalds def_bool HUGETLBFS 10241da177e4SLinus Torvalds 10257063fbf2SJoel Beckerconfig CONFIGFS_FS 102602ac0499SJoel Becker tristate "Userspace-driven configuration filesystem" 102702ac0499SJoel Becker depends on SYSFS 10287063fbf2SJoel Becker help 10297063fbf2SJoel Becker configfs is a ram-based filesystem that provides the converse 10307063fbf2SJoel Becker of sysfs's functionality. Where sysfs is a filesystem-based 10317063fbf2SJoel Becker view of kernel objects, configfs is a filesystem-based manager 10327063fbf2SJoel Becker of kernel objects, or config_items. 10337063fbf2SJoel Becker 10347063fbf2SJoel Becker Both sysfs and configfs can and should exist together on the 10357063fbf2SJoel Becker same system. One is not a replacement for the other. 10367063fbf2SJoel Becker 10371da177e4SLinus Torvaldsendmenu 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvaldsmenu "Miscellaneous filesystems" 10401da177e4SLinus Torvalds 10411da177e4SLinus Torvaldsconfig ADFS_FS 10421da177e4SLinus Torvalds tristate "ADFS file system support (EXPERIMENTAL)" 10439361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10441da177e4SLinus Torvalds help 10451da177e4SLinus Torvalds The Acorn Disc Filing System is the standard file system of the 10461da177e4SLinus Torvalds RiscOS operating system which runs on Acorn's ARM-based Risc PC 10471da177e4SLinus Torvalds systems and the Acorn Archimedes range of machines. If you say Y 10481da177e4SLinus Torvalds here, Linux will be able to read from ADFS partitions on hard drives 10491da177e4SLinus Torvalds and from ADFS-formatted floppy discs. If you also want to be able to 10501da177e4SLinus Torvalds write to those devices, say Y to "ADFS write support" below. 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds The ADFS partition should be the first partition (i.e., 10531da177e4SLinus Torvalds /dev/[hs]d?1) on each of your drives. Please read the file 10541da177e4SLinus Torvalds <file:Documentation/filesystems/adfs.txt> for further details. 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds To compile this code as a module, choose M here: the module will be 10571da177e4SLinus Torvalds called adfs. 10581da177e4SLinus Torvalds 10591da177e4SLinus Torvalds If unsure, say N. 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvaldsconfig ADFS_FS_RW 10621da177e4SLinus Torvalds bool "ADFS write support (DANGEROUS)" 10631da177e4SLinus Torvalds depends on ADFS_FS 10641da177e4SLinus Torvalds help 10651da177e4SLinus Torvalds If you say Y here, you will be able to write to ADFS partitions on 10661da177e4SLinus Torvalds hard drives and ADFS-formatted floppy disks. This is experimental 10671da177e4SLinus Torvalds codes, so if you're unsure, say N. 10681da177e4SLinus Torvalds 10691da177e4SLinus Torvaldsconfig AFFS_FS 10701da177e4SLinus Torvalds tristate "Amiga FFS file system support (EXPERIMENTAL)" 10719361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10721da177e4SLinus Torvalds help 10731da177e4SLinus Torvalds The Fast File System (FFS) is the common file system used on hard 10741da177e4SLinus Torvalds disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 10751da177e4SLinus Torvalds if you want to be able to read and write files from and to an Amiga 10761da177e4SLinus Torvalds FFS partition on your hard drive. Amiga floppies however cannot be 10771da177e4SLinus Torvalds read with this driver due to an incompatibility of the floppy 10781da177e4SLinus Torvalds controller used in an Amiga and the standard floppy controller in 10791da177e4SLinus Torvalds PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 10801da177e4SLinus Torvalds and <file:fs/affs/Changes>. 10811da177e4SLinus Torvalds 10821da177e4SLinus Torvalds With this driver you can also mount disk files used by Bernd 10831da177e4SLinus Torvalds Schmidt's Un*X Amiga Emulator 10841da177e4SLinus Torvalds (<http://www.freiburg.linux.de/~uae/>). 10851da177e4SLinus Torvalds If you want to do this, you will also need to say Y or M to "Loop 10861da177e4SLinus Torvalds device support", above. 10871da177e4SLinus Torvalds 10881da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 10891da177e4SLinus Torvalds module will be called affs. If unsure, say N. 10901da177e4SLinus Torvalds 1091237fead6SMichael Halcrowconfig ECRYPT_FS 1092237fead6SMichael Halcrow tristate "eCrypt filesystem layer support (EXPERIMENTAL)" 109388b4a07eSMichael Halcrow depends on EXPERIMENTAL && KEYS && CRYPTO && NET 1094237fead6SMichael Halcrow help 1095237fead6SMichael Halcrow Encrypted filesystem that operates on the VFS layer. See 1096e403149cSDirk Hohndel <file:Documentation/filesystems/ecryptfs.txt> to learn more about 1097237fead6SMichael Halcrow eCryptfs. Userspace components are required and can be 1098237fead6SMichael Halcrow obtained from <http://ecryptfs.sf.net>. 1099237fead6SMichael Halcrow 1100237fead6SMichael Halcrow To compile this file system support as a module, choose M here: the 1101237fead6SMichael Halcrow module will be called ecryptfs. 1102237fead6SMichael Halcrow 11031da177e4SLinus Torvaldsconfig HFS_FS 11041da177e4SLinus Torvalds tristate "Apple Macintosh file system support (EXPERIMENTAL)" 11059361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 1106878129a3SLennert Buytenhek select NLS 11071da177e4SLinus Torvalds help 11081da177e4SLinus Torvalds If you say Y here, you will be able to mount Macintosh-formatted 11091da177e4SLinus Torvalds floppy disks and hard drive partitions with full read-write access. 1110889c94a1SJohann Felix Soden Please read <file:Documentation/filesystems/hfs.txt> to learn about 1111889c94a1SJohann Felix Soden the available mount options. 11121da177e4SLinus Torvalds 11131da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 11141da177e4SLinus Torvalds module will be called hfs. 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvaldsconfig HFSPLUS_FS 11171da177e4SLinus Torvalds tristate "Apple Extended HFS file system support" 11189361401eSDavid Howells depends on BLOCK 11191da177e4SLinus Torvalds select NLS 11201da177e4SLinus Torvalds select NLS_UTF8 11211da177e4SLinus Torvalds help 11221da177e4SLinus Torvalds If you say Y here, you will be able to mount extended format 11231da177e4SLinus Torvalds Macintosh-formatted hard drive partitions with full read-write access. 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds This file system is often called HFS+ and was introduced with 11261da177e4SLinus Torvalds MacOS 8. It includes all Mac specific filesystem data such as 11271da177e4SLinus Torvalds data forks and creator codes, but it also has several UNIX 11281da177e4SLinus Torvalds style features such as file ownership and permissions. 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvaldsconfig BEFS_FS 11311da177e4SLinus Torvalds tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 11329361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11331da177e4SLinus Torvalds select NLS 11341da177e4SLinus Torvalds help 11351da177e4SLinus Torvalds The BeOS File System (BeFS) is the native file system of Be, Inc's 11361da177e4SLinus Torvalds BeOS. Notable features include support for arbitrary attributes 11373cb2fcccSMatt LaPlante on files and directories, and database-like indices on selected 11381da177e4SLinus Torvalds attributes. (Also note that this driver doesn't make those features 11391da177e4SLinus Torvalds available at this time). It is a 64 bit filesystem, so it supports 114044c09201SMatt LaPlante extremely large volumes and files. 11411da177e4SLinus Torvalds 11421da177e4SLinus Torvalds If you use this filesystem, you should also say Y to at least one 11431da177e4SLinus Torvalds of the NLS (native language support) options below. 11441da177e4SLinus Torvalds 11451da177e4SLinus Torvalds If you don't know what this is about, say N. 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 11481da177e4SLinus Torvalds called befs. 11491da177e4SLinus Torvalds 11501da177e4SLinus Torvaldsconfig BEFS_DEBUG 11511da177e4SLinus Torvalds bool "Debug BeFS" 11521da177e4SLinus Torvalds depends on BEFS_FS 11531da177e4SLinus Torvalds help 11541da177e4SLinus Torvalds If you say Y here, you can use the 'debug' mount option to enable 11551da177e4SLinus Torvalds debugging output from the driver. 11561da177e4SLinus Torvalds 11571da177e4SLinus Torvaldsconfig BFS_FS 11581da177e4SLinus Torvalds tristate "BFS file system support (EXPERIMENTAL)" 11599361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11601da177e4SLinus Torvalds help 11611da177e4SLinus Torvalds Boot File System (BFS) is a file system used under SCO UnixWare to 11621da177e4SLinus Torvalds allow the bootloader access to the kernel image and other important 11631da177e4SLinus Torvalds files during the boot process. It is usually mounted under /stand 11641da177e4SLinus Torvalds and corresponds to the slice marked as "STAND" in the UnixWare 11651da177e4SLinus Torvalds partition. You should say Y if you want to read or write the files 11661da177e4SLinus Torvalds on your /stand slice from within Linux. You then also need to say Y 11671da177e4SLinus Torvalds to "UnixWare slices support", below. More information about the BFS 11681da177e4SLinus Torvalds file system is contained in the file 11691da177e4SLinus Torvalds <file:Documentation/filesystems/bfs.txt>. 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvalds If you don't know what this is about, say N. 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 11741da177e4SLinus Torvalds bfs. Note that the file system of your root partition (the one 11751da177e4SLinus Torvalds containing the directory /) cannot be compiled as a module. 11761da177e4SLinus Torvalds 11771da177e4SLinus Torvalds 11781da177e4SLinus Torvalds 11791da177e4SLinus Torvaldsconfig EFS_FS 11801da177e4SLinus Torvalds tristate "EFS file system support (read only) (EXPERIMENTAL)" 11819361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11821da177e4SLinus Torvalds help 11831da177e4SLinus Torvalds EFS is an older file system used for non-ISO9660 CD-ROMs and hard 11841da177e4SLinus Torvalds disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 11851da177e4SLinus Torvalds uses the XFS file system for hard disk partitions however). 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds This implementation only offers read-only access. If you don't know 11881da177e4SLinus Torvalds what all this is about, it's safe to say N. For more information 11891da177e4SLinus Torvalds about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 11901da177e4SLinus Torvalds 11911da177e4SLinus Torvalds To compile the EFS file system support as a module, choose M here: the 11921da177e4SLinus Torvalds module will be called efs. 11931da177e4SLinus Torvalds 11941da177e4SLinus Torvaldsconfig JFFS2_FS 11951da177e4SLinus Torvalds tristate "Journalling Flash File System v2 (JFFS2) support" 11961da177e4SLinus Torvalds select CRC32 11971da177e4SLinus Torvalds depends on MTD 11981da177e4SLinus Torvalds help 11991da177e4SLinus Torvalds JFFS2 is the second generation of the Journalling Flash File System 12001da177e4SLinus Torvalds for use on diskless embedded devices. It provides improved wear 12011da177e4SLinus Torvalds levelling, compression and support for hard links. You cannot use 12021da177e4SLinus Torvalds this on normal block devices, only on 'MTD' devices. 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds Further information on the design and implementation of JFFS2 is 12051da177e4SLinus Torvalds available at <http://sources.redhat.com/jffs2/>. 12061da177e4SLinus Torvalds 12071da177e4SLinus Torvaldsconfig JFFS2_FS_DEBUG 12081da177e4SLinus Torvalds int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 12091da177e4SLinus Torvalds depends on JFFS2_FS 12101da177e4SLinus Torvalds default "0" 12111da177e4SLinus Torvalds help 12121da177e4SLinus Torvalds This controls the amount of debugging messages produced by the JFFS2 12131da177e4SLinus Torvalds code. Set it to zero for use in production systems. For evaluation, 12141da177e4SLinus Torvalds testing and debugging, it's advisable to set it to one. This will 12151da177e4SLinus Torvalds enable a few assertions and will print debugging messages at the 12161da177e4SLinus Torvalds KERN_DEBUG loglevel, where they won't normally be visible. Level 2 12171da177e4SLinus Torvalds is unlikely to be useful - it enables extra debugging in certain 12181da177e4SLinus Torvalds areas which at one point needed debugging, but when the bugs were 12191da177e4SLinus Torvalds located and fixed, the detailed messages were relegated to level 2. 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds If reporting bugs, please try to have available a full dump of the 12221da177e4SLinus Torvalds messages at debug level 1 while the misbehaviour was occurring. 12231da177e4SLinus Torvalds 12242ba72cb7SDavid Woodhouseconfig JFFS2_FS_WRITEBUFFER 12252ba72cb7SDavid Woodhouse bool "JFFS2 write-buffering support" 1226aa98d7cfSKaiGai Kohei depends on JFFS2_FS 12272ba72cb7SDavid Woodhouse default y 12282ba72cb7SDavid Woodhouse help 12292ba72cb7SDavid Woodhouse This enables the write-buffering support in JFFS2. 12302ba72cb7SDavid Woodhouse 12312ba72cb7SDavid Woodhouse This functionality is required to support JFFS2 on the following 12322ba72cb7SDavid Woodhouse types of flash devices: 12332ba72cb7SDavid Woodhouse - NAND flash 12342ba72cb7SDavid Woodhouse - NOR flash with transparent ECC 12352ba72cb7SDavid Woodhouse - DataFlash 12362ba72cb7SDavid Woodhouse 1237a6bc432eSDavid Woodhouseconfig JFFS2_FS_WBUF_VERIFY 1238a6bc432eSDavid Woodhouse bool "Verify JFFS2 write-buffer reads" 1239a6bc432eSDavid Woodhouse depends on JFFS2_FS_WRITEBUFFER 1240a6bc432eSDavid Woodhouse default n 1241a6bc432eSDavid Woodhouse help 1242a6bc432eSDavid Woodhouse This causes JFFS2 to read back every page written through the 1243a6bc432eSDavid Woodhouse write-buffer, and check for errors. 1244a6bc432eSDavid Woodhouse 12452ba72cb7SDavid Woodhouseconfig JFFS2_SUMMARY 12462ba72cb7SDavid Woodhouse bool "JFFS2 summary support (EXPERIMENTAL)" 12472ba72cb7SDavid Woodhouse depends on JFFS2_FS && EXPERIMENTAL 12482ba72cb7SDavid Woodhouse default n 12492ba72cb7SDavid Woodhouse help 12502ba72cb7SDavid Woodhouse This feature makes it possible to use summary information 12512ba72cb7SDavid Woodhouse for faster filesystem mount. 12522ba72cb7SDavid Woodhouse 12532ba72cb7SDavid Woodhouse The summary information can be inserted into a filesystem image 12542ba72cb7SDavid Woodhouse by the utility 'sumtool'. 12552ba72cb7SDavid Woodhouse 12562ba72cb7SDavid Woodhouse If unsure, say 'N'. 12572ba72cb7SDavid Woodhouse 12582ba72cb7SDavid Woodhouseconfig JFFS2_FS_XATTR 12592ba72cb7SDavid Woodhouse bool "JFFS2 XATTR support (EXPERIMENTAL)" 126004510deeSKaiGai Kohei depends on JFFS2_FS && EXPERIMENTAL 1261aa98d7cfSKaiGai Kohei default n 1262aa98d7cfSKaiGai Kohei help 1263aa98d7cfSKaiGai Kohei Extended attributes are name:value pairs associated with inodes by 1264aa98d7cfSKaiGai Kohei the kernel or by users (see the attr(5) manual page, or visit 1265aa98d7cfSKaiGai Kohei <http://acl.bestbits.at/> for details). 1266aa98d7cfSKaiGai Kohei 1267aa98d7cfSKaiGai Kohei If unsure, say N. 1268aa98d7cfSKaiGai Kohei 1269aa98d7cfSKaiGai Koheiconfig JFFS2_FS_POSIX_ACL 1270aa98d7cfSKaiGai Kohei bool "JFFS2 POSIX Access Control Lists" 1271aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1272aa98d7cfSKaiGai Kohei default y 1273aa98d7cfSKaiGai Kohei select FS_POSIX_ACL 1274aa98d7cfSKaiGai Kohei help 1275aa98d7cfSKaiGai Kohei Posix Access Control Lists (ACLs) support permissions for users and 1276aa98d7cfSKaiGai Kohei groups beyond the owner/group/world scheme. 1277aa98d7cfSKaiGai Kohei 1278aa98d7cfSKaiGai Kohei To learn more about Access Control Lists, visit the Posix ACLs for 1279aa98d7cfSKaiGai Kohei Linux website <http://acl.bestbits.at/>. 1280aa98d7cfSKaiGai Kohei 1281aa98d7cfSKaiGai Kohei If you don't know what Access Control Lists are, say N 1282aa98d7cfSKaiGai Kohei 1283aa98d7cfSKaiGai Koheiconfig JFFS2_FS_SECURITY 1284aa98d7cfSKaiGai Kohei bool "JFFS2 Security Labels" 1285aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1286aa98d7cfSKaiGai Kohei default y 1287aa98d7cfSKaiGai Kohei help 1288aa98d7cfSKaiGai Kohei Security labels support alternative access control models 1289aa98d7cfSKaiGai Kohei implemented by security modules like SELinux. This option 1290aa98d7cfSKaiGai Kohei enables an extended attribute handler for file security 1291aa98d7cfSKaiGai Kohei labels in the jffs2 filesystem. 1292aa98d7cfSKaiGai Kohei 1293aa98d7cfSKaiGai Kohei If you are not using a security module that requires using 1294aa98d7cfSKaiGai Kohei extended attributes for file security labels, say N. 1295aa98d7cfSKaiGai Kohei 12961da177e4SLinus Torvaldsconfig JFFS2_COMPRESSION_OPTIONS 12971da177e4SLinus Torvalds bool "Advanced compression options for JFFS2" 12981da177e4SLinus Torvalds depends on JFFS2_FS 12991da177e4SLinus Torvalds default n 13001da177e4SLinus Torvalds help 13011da177e4SLinus Torvalds Enabling this option allows you to explicitly choose which 13021da177e4SLinus Torvalds compression modules, if any, are enabled in JFFS2. Removing 13039e2de407SUwe Kleine-König compressors can mean you cannot read existing file systems, 13041da177e4SLinus Torvalds and enabling experimental compressors can mean that you 13051da177e4SLinus Torvalds write a file system which cannot be read by a standard kernel. 13061da177e4SLinus Torvalds 13071da177e4SLinus Torvalds If unsure, you should _definitely_ say 'N'. 13081da177e4SLinus Torvalds 13091da177e4SLinus Torvaldsconfig JFFS2_ZLIB 13101da177e4SLinus Torvalds bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 13111da177e4SLinus Torvalds select ZLIB_INFLATE 13121da177e4SLinus Torvalds select ZLIB_DEFLATE 13131da177e4SLinus Torvalds depends on JFFS2_FS 13141da177e4SLinus Torvalds default y 13151da177e4SLinus Torvalds help 13161da177e4SLinus Torvalds Zlib is designed to be a free, general-purpose, legally unencumbered, 13171da177e4SLinus Torvalds lossless data-compression library for use on virtually any computer 13181da177e4SLinus Torvalds hardware and operating system. See <http://www.gzip.org/zlib/> for 13191da177e4SLinus Torvalds further information. 13201da177e4SLinus Torvalds 13211da177e4SLinus Torvalds Say 'Y' if unsure. 13221da177e4SLinus Torvalds 1323c799aca3SRichard Purdieconfig JFFS2_LZO 1324c799aca3SRichard Purdie bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS 1325c799aca3SRichard Purdie select LZO_COMPRESS 1326c799aca3SRichard Purdie select LZO_DECOMPRESS 1327c799aca3SRichard Purdie depends on JFFS2_FS 13283ca135e1SDavid Woodhouse default n 1329c799aca3SRichard Purdie help 1330c799aca3SRichard Purdie minilzo-based compression. Generally works better than Zlib. 1331c799aca3SRichard Purdie 13323ca135e1SDavid Woodhouse This feature was added in July, 2007. Say 'N' if you need 13333ca135e1SDavid Woodhouse compatibility with older bootloaders or kernels. 1334c799aca3SRichard Purdie 13351da177e4SLinus Torvaldsconfig JFFS2_RTIME 13361da177e4SLinus Torvalds bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 13371da177e4SLinus Torvalds depends on JFFS2_FS 13381da177e4SLinus Torvalds default y 13391da177e4SLinus Torvalds help 13401da177e4SLinus Torvalds Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 13411da177e4SLinus Torvalds 13421da177e4SLinus Torvaldsconfig JFFS2_RUBIN 13431da177e4SLinus Torvalds bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 13441da177e4SLinus Torvalds depends on JFFS2_FS 13451da177e4SLinus Torvalds default n 13461da177e4SLinus Torvalds help 13471da177e4SLinus Torvalds RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 13481da177e4SLinus Torvalds 13491da177e4SLinus Torvaldschoice 13501da177e4SLinus Torvalds prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 13511da177e4SLinus Torvalds default JFFS2_CMODE_PRIORITY 13521da177e4SLinus Torvalds depends on JFFS2_FS 13531da177e4SLinus Torvalds help 13541da177e4SLinus Torvalds You can set here the default compression mode of JFFS2 from 13551da177e4SLinus Torvalds the available compression modes. Don't touch if unsure. 13561da177e4SLinus Torvalds 13571da177e4SLinus Torvaldsconfig JFFS2_CMODE_NONE 13581da177e4SLinus Torvalds bool "no compression" 13591da177e4SLinus Torvalds help 13601da177e4SLinus Torvalds Uses no compression. 13611da177e4SLinus Torvalds 13621da177e4SLinus Torvaldsconfig JFFS2_CMODE_PRIORITY 13631da177e4SLinus Torvalds bool "priority" 13641da177e4SLinus Torvalds help 1365cc2e2767SMatt LaPlante Tries the compressors in a predefined order and chooses the first 13661da177e4SLinus Torvalds successful one. 13671da177e4SLinus Torvalds 13681da177e4SLinus Torvaldsconfig JFFS2_CMODE_SIZE 13691da177e4SLinus Torvalds bool "size (EXPERIMENTAL)" 13701da177e4SLinus Torvalds help 13711da177e4SLinus Torvalds Tries all compressors and chooses the one which has the smallest 13721da177e4SLinus Torvalds result. 13731da177e4SLinus Torvalds 13743b23c1f5SRichard Purdieconfig JFFS2_CMODE_FAVOURLZO 13753b23c1f5SRichard Purdie bool "Favour LZO" 13763b23c1f5SRichard Purdie help 13773b23c1f5SRichard Purdie Tries all compressors and chooses the one which has the smallest 13783b23c1f5SRichard Purdie result but gives some preference to LZO (which has faster 13793b23c1f5SRichard Purdie decompression) at the expense of size. 13803b23c1f5SRichard Purdie 13811da177e4SLinus Torvaldsendchoice 13821da177e4SLinus Torvalds 13831da177e4SLinus Torvaldsconfig CRAMFS 13841da177e4SLinus Torvalds tristate "Compressed ROM file system support (cramfs)" 13859361401eSDavid Howells depends on BLOCK 13861da177e4SLinus Torvalds select ZLIB_INFLATE 13871da177e4SLinus Torvalds help 13881da177e4SLinus Torvalds Saying Y here includes support for CramFs (Compressed ROM File 13891da177e4SLinus Torvalds System). CramFs is designed to be a simple, small, and compressed 13901da177e4SLinus Torvalds file system for ROM based embedded systems. CramFs is read-only, 13911da177e4SLinus Torvalds limited to 256MB file systems (with 16MB files), and doesn't support 13921da177e4SLinus Torvalds 16/32 bits uid/gid, hard links and timestamps. 13931da177e4SLinus Torvalds 13941da177e4SLinus Torvalds See <file:Documentation/filesystems/cramfs.txt> and 13951da177e4SLinus Torvalds <file:fs/cramfs/README> for further information. 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 13981da177e4SLinus Torvalds cramfs. Note that the root file system (the one containing the 13991da177e4SLinus Torvalds directory /) cannot be compiled as a module. 14001da177e4SLinus Torvalds 14011da177e4SLinus Torvalds If unsure, say N. 14021da177e4SLinus Torvalds 14031da177e4SLinus Torvaldsconfig VXFS_FS 14041da177e4SLinus Torvalds tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 14059361401eSDavid Howells depends on BLOCK 14061da177e4SLinus Torvalds help 14071da177e4SLinus Torvalds FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 14081da177e4SLinus Torvalds file system format. VERITAS VxFS(TM) is the standard file system 14091da177e4SLinus Torvalds of SCO UnixWare (and possibly others) and optionally available 14101da177e4SLinus Torvalds for Sunsoft Solaris, HP-UX and many other operating systems. 14111da177e4SLinus Torvalds Currently only readonly access is supported. 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvalds NOTE: the file system type as used by mount(1), mount(2) and 14141da177e4SLinus Torvalds fstab(5) is 'vxfs' as it describes the file system format, not 14151da177e4SLinus Torvalds the actual driver. 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 14181da177e4SLinus Torvalds called freevxfs. If unsure, say N. 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvalds 14211da177e4SLinus Torvaldsconfig HPFS_FS 14221da177e4SLinus Torvalds tristate "OS/2 HPFS file system support" 14239361401eSDavid Howells depends on BLOCK 14241da177e4SLinus Torvalds help 14251da177e4SLinus Torvalds OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 14261da177e4SLinus Torvalds is the file system used for organizing files on OS/2 hard disk 14271da177e4SLinus Torvalds partitions. Say Y if you want to be able to read files from and 14281da177e4SLinus Torvalds write files to an OS/2 HPFS partition on your hard drive. OS/2 14291da177e4SLinus Torvalds floppies however are in regular MSDOS format, so you don't need this 14301da177e4SLinus Torvalds option in order to be able to read them. Read 14311da177e4SLinus Torvalds <file:Documentation/filesystems/hpfs.txt>. 14321da177e4SLinus Torvalds 14331da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14341da177e4SLinus Torvalds module will be called hpfs. If unsure, say N. 14351da177e4SLinus Torvalds 14361da177e4SLinus Torvalds 14371da177e4SLinus Torvalds 14381da177e4SLinus Torvaldsconfig QNX4FS_FS 14391da177e4SLinus Torvalds tristate "QNX4 file system support (read only)" 14409361401eSDavid Howells depends on BLOCK 14411da177e4SLinus Torvalds help 14421da177e4SLinus Torvalds This is the file system used by the real-time operating systems 14431da177e4SLinus Torvalds QNX 4 and QNX 6 (the latter is also called QNX RTP). 14441da177e4SLinus Torvalds Further information is available at <http://www.qnx.com/>. 14451da177e4SLinus Torvalds Say Y if you intend to mount QNX hard disks or floppies. 14461da177e4SLinus Torvalds Unless you say Y to "QNX4FS read-write support" below, you will 14471da177e4SLinus Torvalds only be able to read these file systems. 14481da177e4SLinus Torvalds 14491da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14501da177e4SLinus Torvalds module will be called qnx4. 14511da177e4SLinus Torvalds 14521da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 14531da177e4SLinus Torvalds answer N. 14541da177e4SLinus Torvalds 14551da177e4SLinus Torvaldsconfig QNX4FS_RW 14561da177e4SLinus Torvalds bool "QNX4FS write support (DANGEROUS)" 14571da177e4SLinus Torvalds depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 14581da177e4SLinus Torvalds help 14591da177e4SLinus Torvalds Say Y if you want to test write support for QNX4 file systems. 14601da177e4SLinus Torvalds 14611da177e4SLinus Torvalds It's currently broken, so for now: 14621da177e4SLinus Torvalds answer N. 14631da177e4SLinus Torvalds 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvalds 14661da177e4SLinus Torvaldsconfig SYSV_FS 14671da177e4SLinus Torvalds tristate "System V/Xenix/V7/Coherent file system support" 14689361401eSDavid Howells depends on BLOCK 14691da177e4SLinus Torvalds help 14701da177e4SLinus Torvalds SCO, Xenix and Coherent are commercial Unix systems for Intel 14711da177e4SLinus Torvalds machines, and Version 7 was used on the DEC PDP-11. Saying Y 14721da177e4SLinus Torvalds here would allow you to read from their floppies and hard disk 14731da177e4SLinus Torvalds partitions. 14741da177e4SLinus Torvalds 14751da177e4SLinus Torvalds If you have floppies or hard disk partitions like that, it is likely 14761da177e4SLinus Torvalds that they contain binaries from those other Unix systems; in order 1477cab00891SMatt LaPlante to run these binaries, you will want to install linux-abi which is 14781da177e4SLinus Torvalds a set of kernel modules that lets you run SCO, Xenix, Wyse, 14791da177e4SLinus Torvalds UnixWare, Dell Unix and System V programs under Linux. It is 14801da177e4SLinus Torvalds available via FTP (user: ftp) from 14811da177e4SLinus Torvalds <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 14821da177e4SLinus Torvalds NOTE: that will work only for binaries from Intel-based systems; 14831da177e4SLinus Torvalds PDP ones will have to wait until somebody ports Linux to -11 ;-) 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 14861da177e4SLinus Torvalds network using NFS, you don't need the System V file system support 14871da177e4SLinus Torvalds (but you need NFS file system support obviously). 14881da177e4SLinus Torvalds 14891da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 14901da177e4SLinus Torvalds good portable way to transport files and directories between unixes 14911da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 14921da177e4SLinus Torvalds tar" or preferably "info tar"). Note also that this option has 14931da177e4SLinus Torvalds nothing whatsoever to do with the option "System V IPC". Read about 14941da177e4SLinus Torvalds the System V file system in 14951da177e4SLinus Torvalds <file:Documentation/filesystems/sysv-fs.txt>. 14961da177e4SLinus Torvalds Saying Y here will enlarge your kernel by about 27 KB. 14971da177e4SLinus Torvalds 14981da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 14991da177e4SLinus Torvalds sysv. 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15021da177e4SLinus Torvalds 15031da177e4SLinus Torvalds 15041da177e4SLinus Torvalds 15051da177e4SLinus Torvaldsconfig UFS_FS 15061da177e4SLinus Torvalds tristate "UFS file system support (read only)" 15079361401eSDavid Howells depends on BLOCK 15081da177e4SLinus Torvalds help 15091da177e4SLinus Torvalds BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 15101da177e4SLinus Torvalds OpenBSD and NeXTstep) use a file system called UFS. Some System V 15111da177e4SLinus Torvalds Unixes can create and mount hard disk partitions and diskettes using 15121da177e4SLinus Torvalds this file system as well. Saying Y here will allow you to read from 15131da177e4SLinus Torvalds these partitions; if you also want to write to them, say Y to the 15141da177e4SLinus Torvalds experimental "UFS file system write support", below. Please read the 15151da177e4SLinus Torvalds file <file:Documentation/filesystems/ufs.txt> for more information. 15161da177e4SLinus Torvalds 15171da177e4SLinus Torvalds The recently released UFS2 variant (used in FreeBSD 5.x) is 15181da177e4SLinus Torvalds READ-ONLY supported. 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 15211da177e4SLinus Torvalds network using NFS, you don't need the UFS file system support (but 15221da177e4SLinus Torvalds you need NFS file system support obviously). 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 15251da177e4SLinus Torvalds good portable way to transport files and directories between unixes 15261da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 15271da177e4SLinus Torvalds tar" or preferably "info tar"). 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds When accessing NeXTstep files, you may need to convert them from the 15301da177e4SLinus Torvalds NeXT character set to the Latin1 character set; use the program 15311da177e4SLinus Torvalds recode ("info recode") for this purpose. 15321da177e4SLinus Torvalds 15331da177e4SLinus Torvalds To compile the UFS file system support as a module, choose M here: the 15341da177e4SLinus Torvalds module will be called ufs. 15351da177e4SLinus Torvalds 15361da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15371da177e4SLinus Torvalds 15381da177e4SLinus Torvaldsconfig UFS_FS_WRITE 15391da177e4SLinus Torvalds bool "UFS file system write support (DANGEROUS)" 15405afb3145SEvgeniy Dushistov depends on UFS_FS && EXPERIMENTAL 15411da177e4SLinus Torvalds help 15421da177e4SLinus Torvalds Say Y here if you want to try writing to UFS partitions. This is 15431da177e4SLinus Torvalds experimental, so you should back up your UFS partitions beforehand. 15441da177e4SLinus Torvalds 1545abf5d15fSEvgeniy Dushistovconfig UFS_DEBUG 1546abf5d15fSEvgeniy Dushistov bool "UFS debugging" 1547abf5d15fSEvgeniy Dushistov depends on UFS_FS 1548abf5d15fSEvgeniy Dushistov help 1549abf5d15fSEvgeniy Dushistov If you are experiencing any problems with the UFS filesystem, say 1550abf5d15fSEvgeniy Dushistov Y here. This will result in _many_ additional debugging messages to be 1551abf5d15fSEvgeniy Dushistov written to the system log. 1552abf5d15fSEvgeniy Dushistov 15531da177e4SLinus Torvaldsendmenu 15541da177e4SLinus Torvalds 1555ea0985adSJan Engelhardtmenuconfig NETWORK_FILESYSTEMS 1556ea0985adSJan Engelhardt bool "Network File Systems" 1557ea0985adSJan Engelhardt default y 15581da177e4SLinus Torvalds depends on NET 1559ea0985adSJan Engelhardt ---help--- 1560ea0985adSJan Engelhardt Say Y here to get to see options for network filesystems and 1561ea0985adSJan Engelhardt filesystem-related networking code, such as NFS daemon and 1562ea0985adSJan Engelhardt RPCSEC security modules. 1563ea0985adSJan Engelhardt This option alone does not add any kernel code. 1564ea0985adSJan Engelhardt 1565ea0985adSJan Engelhardt If you say N, all options in this submenu will be skipped and 1566ea0985adSJan Engelhardt disabled; if unsure, say Y here. 1567ea0985adSJan Engelhardt 1568ea0985adSJan Engelhardtif NETWORK_FILESYSTEMS 15691da177e4SLinus Torvalds 15701da177e4SLinus Torvaldsconfig NFS_FS 15711da177e4SLinus Torvalds tristate "NFS file system support" 15721da177e4SLinus Torvalds depends on INET 15731da177e4SLinus Torvalds select LOCKD 15741da177e4SLinus Torvalds select SUNRPC 1575b7fa0554SAndreas Gruenbacher select NFS_ACL_SUPPORT if NFS_V3_ACL 15761da177e4SLinus Torvalds help 15771da177e4SLinus Torvalds If you are connected to some other (usually local) Unix computer 15781da177e4SLinus Torvalds (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 15791da177e4SLinus Torvalds on that computer (the NFS server) using the Network File Sharing 15801da177e4SLinus Torvalds protocol, say Y. "Mounting files" means that the client can access 15811da177e4SLinus Torvalds the files with usual UNIX commands as if they were sitting on the 15821da177e4SLinus Torvalds client's hard disk. For this to work, the server must run the 15831da177e4SLinus Torvalds programs nfsd and mountd (but does not need to have NFS file system 15841da177e4SLinus Torvalds support enabled in its kernel). NFS is explained in the Network 15851da177e4SLinus Torvalds Administrator's Guide, available from 15861da177e4SLinus Torvalds <http://www.tldp.org/docs.html#guide>, on its man page: "man 15871da177e4SLinus Torvalds nfs", and in the NFS-HOWTO. 15881da177e4SLinus Torvalds 15891da177e4SLinus Torvalds A superior but less widely used alternative to NFS is provided by 15901da177e4SLinus Torvalds the Coda file system; see "Coda file system support" below. 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvalds If you say Y here, you should have said Y to TCP/IP networking also. 15931da177e4SLinus Torvalds This option would enlarge your kernel by about 27 KB. 15941da177e4SLinus Torvalds 15951da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 15961da177e4SLinus Torvalds module will be called nfs. 15971da177e4SLinus Torvalds 15981da177e4SLinus Torvalds If you are configuring a diskless machine which will mount its root 15991da177e4SLinus Torvalds file system over NFS at boot time, say Y here and to "Kernel 16001da177e4SLinus Torvalds level IP autoconfiguration" above and to "Root file system on NFS" 16011da177e4SLinus Torvalds below. You cannot compile this driver as a module in this case. 16021da177e4SLinus Torvalds There are two packages designed for booting diskless machines over 16031da177e4SLinus Torvalds the net: netboot, available from 16041da177e4SLinus Torvalds <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 16051da177e4SLinus Torvalds available from <http://ftp1.sourceforge.net/etherboot/>. 16061da177e4SLinus Torvalds 16071da177e4SLinus Torvalds If you don't know what all this is about, say N. 16081da177e4SLinus Torvalds 16091da177e4SLinus Torvaldsconfig NFS_V3 16101da177e4SLinus Torvalds bool "Provide NFSv3 client support" 16111da177e4SLinus Torvalds depends on NFS_FS 16121da177e4SLinus Torvalds help 16131da177e4SLinus Torvalds Say Y here if you want your NFS client to be able to speak version 16141da177e4SLinus Torvalds 3 of the NFS protocol. 16151da177e4SLinus Torvalds 16161da177e4SLinus Torvalds If unsure, say Y. 16171da177e4SLinus Torvalds 1618b7fa0554SAndreas Gruenbacherconfig NFS_V3_ACL 1619b7fa0554SAndreas Gruenbacher bool "Provide client support for the NFSv3 ACL protocol extension" 1620b7fa0554SAndreas Gruenbacher depends on NFS_V3 1621b7fa0554SAndreas Gruenbacher help 1622b7fa0554SAndreas Gruenbacher Implement the NFSv3 ACL protocol extension for manipulating POSIX 1623b7fa0554SAndreas Gruenbacher Access Control Lists. The server should also be compiled with 1624b7fa0554SAndreas Gruenbacher the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1625b7fa0554SAndreas Gruenbacher 1626b7fa0554SAndreas Gruenbacher If unsure, say N. 1627b7fa0554SAndreas Gruenbacher 16281da177e4SLinus Torvaldsconfig NFS_V4 16291da177e4SLinus Torvalds bool "Provide NFSv4 client support (EXPERIMENTAL)" 16301da177e4SLinus Torvalds depends on NFS_FS && EXPERIMENTAL 16311da177e4SLinus Torvalds select RPCSEC_GSS_KRB5 16321da177e4SLinus Torvalds help 16331da177e4SLinus Torvalds Say Y here if you want your NFS client to be able to speak the newer 16341da177e4SLinus Torvalds version 4 of the NFS protocol. 16351da177e4SLinus Torvalds 16361da177e4SLinus Torvalds Note: Requires auxiliary userspace daemons which may be found on 16371da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 16381da177e4SLinus Torvalds 16391da177e4SLinus Torvalds If unsure, say N. 16401da177e4SLinus Torvalds 16411da177e4SLinus Torvaldsconfig NFS_DIRECTIO 1642026ed5c9SChuck Lever bool "Allow direct I/O on NFS files" 1643026ed5c9SChuck Lever depends on NFS_FS 16441da177e4SLinus Torvalds help 16451da177e4SLinus Torvalds This option enables applications to perform uncached I/O on files 16461da177e4SLinus Torvalds in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 16471da177e4SLinus Torvalds is set for a file, its data is not cached in the system's page 16481da177e4SLinus Torvalds cache. Data is moved to and from user-level application buffers 16491da177e4SLinus Torvalds directly. Unlike local disk-based file systems, NFS O_DIRECT has 16501da177e4SLinus Torvalds no alignment restrictions. 16511da177e4SLinus Torvalds 16521da177e4SLinus Torvalds Unless your program is designed to use O_DIRECT properly, you are 16531da177e4SLinus Torvalds much better off allowing the NFS client to manage data caching for 16541da177e4SLinus Torvalds you. Misusing O_DIRECT can cause poor server performance or network 16551da177e4SLinus Torvalds storms. This kernel build option defaults OFF to avoid exposing 16561da177e4SLinus Torvalds system administrators unwittingly to a potentially hazardous 16571da177e4SLinus Torvalds feature. 16581da177e4SLinus Torvalds 16591da177e4SLinus Torvalds For more details on NFS O_DIRECT, see fs/nfs/direct.c. 16601da177e4SLinus Torvalds 16611da177e4SLinus Torvalds If unsure, say N. This reduces the size of the NFS client, and 16621da177e4SLinus Torvalds causes open() to return EINVAL if a file residing in NFS is 16631da177e4SLinus Torvalds opened with the O_DIRECT flag. 16641da177e4SLinus Torvalds 16651da177e4SLinus Torvaldsconfig NFSD 16661da177e4SLinus Torvalds tristate "NFS server support" 16671da177e4SLinus Torvalds depends on INET 16681da177e4SLinus Torvalds select LOCKD 16691da177e4SLinus Torvalds select SUNRPC 16701da177e4SLinus Torvalds select EXPORTFS 1671f05e15b5SHerbert Xu select NFSD_V2_ACL if NFSD_V3_ACL 1672f05e15b5SHerbert Xu select NFS_ACL_SUPPORT if NFSD_V2_ACL 1673f05e15b5SHerbert Xu select NFSD_TCP if NFSD_V4 1674f05e15b5SHerbert Xu select CRYPTO_MD5 if NFSD_V4 1675f05e15b5SHerbert Xu select CRYPTO if NFSD_V4 1676f05e15b5SHerbert Xu select FS_POSIX_ACL if NFSD_V4 1677*440bcc59SJ. Bruce Fields select PROC_FS if NFSD_V4 1678*440bcc59SJ. Bruce Fields select PROC_FS if SUNRPC_GSS 16791da177e4SLinus Torvalds help 16801da177e4SLinus Torvalds If you want your Linux box to act as an NFS *server*, so that other 16811da177e4SLinus Torvalds computers on your local network which support NFS can access certain 16821da177e4SLinus Torvalds directories on your box transparently, you have two options: you can 16831da177e4SLinus Torvalds use the self-contained user space program nfsd, in which case you 16841da177e4SLinus Torvalds should say N here, or you can say Y and use the kernel based NFS 16851da177e4SLinus Torvalds server. The advantage of the kernel based solution is that it is 16861da177e4SLinus Torvalds faster. 16871da177e4SLinus Torvalds 16881da177e4SLinus Torvalds In either case, you will need support software; the respective 16891da177e4SLinus Torvalds locations are given in the file <file:Documentation/Changes> in the 16901da177e4SLinus Torvalds NFS section. 16911da177e4SLinus Torvalds 16921da177e4SLinus Torvalds If you say Y here, you will get support for version 2 of the NFS 16931da177e4SLinus Torvalds protocol (NFSv2). If you also want NFSv3, say Y to the next question 16941da177e4SLinus Torvalds as well. 16951da177e4SLinus Torvalds 16961da177e4SLinus Torvalds Please read the NFS-HOWTO, available from 16971da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>. 16981da177e4SLinus Torvalds 16991da177e4SLinus Torvalds To compile the NFS server support as a module, choose M here: the 17001da177e4SLinus Torvalds module will be called nfsd. If unsure, say N. 17011da177e4SLinus Torvalds 1702a257cdd0SAndreas Gruenbacherconfig NFSD_V2_ACL 1703a257cdd0SAndreas Gruenbacher bool 1704a257cdd0SAndreas Gruenbacher depends on NFSD 1705a257cdd0SAndreas Gruenbacher 17061da177e4SLinus Torvaldsconfig NFSD_V3 17071da177e4SLinus Torvalds bool "Provide NFSv3 server support" 17081da177e4SLinus Torvalds depends on NFSD 17091da177e4SLinus Torvalds help 17101da177e4SLinus Torvalds If you would like to include the NFSv3 server as well as the NFSv2 17111da177e4SLinus Torvalds server, say Y here. If unsure, say Y. 17121da177e4SLinus Torvalds 1713a257cdd0SAndreas Gruenbacherconfig NFSD_V3_ACL 1714a257cdd0SAndreas Gruenbacher bool "Provide server support for the NFSv3 ACL protocol extension" 1715a257cdd0SAndreas Gruenbacher depends on NFSD_V3 1716a257cdd0SAndreas Gruenbacher help 1717a257cdd0SAndreas Gruenbacher Implement the NFSv3 ACL protocol extension for manipulating POSIX 1718a257cdd0SAndreas Gruenbacher Access Control Lists on exported file systems. NFS clients should 1719a257cdd0SAndreas Gruenbacher be compiled with the NFSv3 ACL protocol extension; see the 1720a257cdd0SAndreas Gruenbacher CONFIG_NFS_V3_ACL option. If unsure, say N. 1721a257cdd0SAndreas Gruenbacher 17221da177e4SLinus Torvaldsconfig NFSD_V4 17231da177e4SLinus Torvalds bool "Provide NFSv4 server support (EXPERIMENTAL)" 17248cd69e1bSTrond Myklebust depends on NFSD && NFSD_V3 && EXPERIMENTAL 172542ed95c4SJ. Bruce Fields select RPCSEC_GSS_KRB5 17261da177e4SLinus Torvalds help 17271da177e4SLinus Torvalds If you would like to include the NFSv4 server as well as the NFSv2 17281da177e4SLinus Torvalds and NFSv3 servers, say Y here. This feature is experimental, and 17291da177e4SLinus Torvalds should only be used if you are interested in helping to test NFSv4. 17301da177e4SLinus Torvalds If unsure, say N. 17311da177e4SLinus Torvalds 17321da177e4SLinus Torvaldsconfig NFSD_TCP 17331da177e4SLinus Torvalds bool "Provide NFS server over TCP support" 17341da177e4SLinus Torvalds depends on NFSD 17351da177e4SLinus Torvalds default y 17361da177e4SLinus Torvalds help 17371da177e4SLinus Torvalds If you want your NFS server to support TCP connections, say Y here. 17381da177e4SLinus Torvalds TCP connections usually perform better than the default UDP when 17391da177e4SLinus Torvalds the network is lossy or congested. If unsure, say Y. 17401da177e4SLinus Torvalds 17411da177e4SLinus Torvaldsconfig ROOT_NFS 17421da177e4SLinus Torvalds bool "Root file system on NFS" 17431da177e4SLinus Torvalds depends on NFS_FS=y && IP_PNP 17441da177e4SLinus Torvalds help 17451da177e4SLinus Torvalds If you want your Linux box to mount its whole root file system (the 17461da177e4SLinus Torvalds one containing the directory /) from some other computer over the 17471da177e4SLinus Torvalds net via NFS (presumably because your box doesn't have a hard disk), 17481da177e4SLinus Torvalds say Y. Read <file:Documentation/nfsroot.txt> for details. It is 17491da177e4SLinus Torvalds likely that in this case, you also want to say Y to "Kernel level IP 17501da177e4SLinus Torvalds autoconfiguration" so that your box can discover its network address 17511da177e4SLinus Torvalds at boot time. 17521da177e4SLinus Torvalds 17531da177e4SLinus Torvalds Most people say N here. 17541da177e4SLinus Torvalds 17551da177e4SLinus Torvaldsconfig LOCKD 17561da177e4SLinus Torvalds tristate 17571da177e4SLinus Torvalds 17581da177e4SLinus Torvaldsconfig LOCKD_V4 17591da177e4SLinus Torvalds bool 17601da177e4SLinus Torvalds depends on NFSD_V3 || NFS_V3 17611da177e4SLinus Torvalds default y 17621da177e4SLinus Torvalds 17631da177e4SLinus Torvaldsconfig EXPORTFS 17641da177e4SLinus Torvalds tristate 17651da177e4SLinus Torvalds 1766a257cdd0SAndreas Gruenbacherconfig NFS_ACL_SUPPORT 1767a257cdd0SAndreas Gruenbacher tristate 1768a257cdd0SAndreas Gruenbacher select FS_POSIX_ACL 1769a257cdd0SAndreas Gruenbacher 1770a257cdd0SAndreas Gruenbacherconfig NFS_COMMON 1771a257cdd0SAndreas Gruenbacher bool 1772a257cdd0SAndreas Gruenbacher depends on NFSD || NFS_FS 1773a257cdd0SAndreas Gruenbacher default y 1774a257cdd0SAndreas Gruenbacher 17751da177e4SLinus Torvaldsconfig SUNRPC 17761da177e4SLinus Torvalds tristate 17771da177e4SLinus Torvalds 17781da177e4SLinus Torvaldsconfig SUNRPC_GSS 17791da177e4SLinus Torvalds tristate 17801da177e4SLinus Torvalds 1781c3a57ed7S\"Talpey, Thomas\config SUNRPC_XPRT_RDMA 1782c3a57ed7S\"Talpey, Thomas\ tristate "RDMA transport for sunrpc (EXPERIMENTAL)" 1783113632d0S\"Talpey, Thomas\ depends on SUNRPC && INFINIBAND && EXPERIMENTAL 1784c3a57ed7S\"Talpey, Thomas\ default m 1785c3a57ed7S\"Talpey, Thomas\ help 1786c3a57ed7S\"Talpey, Thomas\ Adds a client RPC transport for supporting kernel NFS over RDMA 1787c3a57ed7S\"Talpey, Thomas\ mounts, including Infiniband and iWARP. Experimental. 1788c3a57ed7S\"Talpey, Thomas\ 178900a6e7bbSChuck Leverconfig SUNRPC_BIND34 179000a6e7bbSChuck Lever bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" 179100a6e7bbSChuck Lever depends on SUNRPC && EXPERIMENTAL 179200a6e7bbSChuck Lever help 179300a6e7bbSChuck Lever Provides kernel support for querying rpcbind servers via versions 3 179400a6e7bbSChuck Lever and 4 of the rpcbind protocol. The kernel automatically falls back 179500a6e7bbSChuck Lever to version 2 if a remote rpcbind service does not support versions 179600a6e7bbSChuck Lever 3 or 4. 179700a6e7bbSChuck Lever 179800a6e7bbSChuck Lever If unsure, say N to get traditional behavior (version 2 rpcbind 179900a6e7bbSChuck Lever requests only). 180000a6e7bbSChuck Lever 18011da177e4SLinus Torvaldsconfig RPCSEC_GSS_KRB5 18021da177e4SLinus Torvalds tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 18031da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18041da177e4SLinus Torvalds select SUNRPC_GSS 18051da177e4SLinus Torvalds select CRYPTO 18061da177e4SLinus Torvalds select CRYPTO_MD5 18071da177e4SLinus Torvalds select CRYPTO_DES 1808bcbaecbbSPatrick McHardy select CRYPTO_CBC 18091da177e4SLinus Torvalds help 18101da177e4SLinus Torvalds Provides for secure RPC calls by means of a gss-api 18111da177e4SLinus Torvalds mechanism based on Kerberos V5. This is required for 18121da177e4SLinus Torvalds NFSv4. 18131da177e4SLinus Torvalds 18141da177e4SLinus Torvalds Note: Requires an auxiliary userspace daemon which may be found on 18151da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 18161da177e4SLinus Torvalds 18171da177e4SLinus Torvalds If unsure, say N. 18181da177e4SLinus Torvalds 18191da177e4SLinus Torvaldsconfig RPCSEC_GSS_SPKM3 18201da177e4SLinus Torvalds tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 18211da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18221da177e4SLinus Torvalds select SUNRPC_GSS 18231da177e4SLinus Torvalds select CRYPTO 18241da177e4SLinus Torvalds select CRYPTO_MD5 18251da177e4SLinus Torvalds select CRYPTO_DES 1826df6db302SJ. Bruce Fields select CRYPTO_CAST5 1827bcbaecbbSPatrick McHardy select CRYPTO_CBC 18281da177e4SLinus Torvalds help 18291da177e4SLinus Torvalds Provides for secure RPC calls by means of a gss-api 18301da177e4SLinus Torvalds mechanism based on the SPKM3 public-key mechanism. 18311da177e4SLinus Torvalds 18321da177e4SLinus Torvalds Note: Requires an auxiliary userspace daemon which may be found on 18331da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 18341da177e4SLinus Torvalds 18351da177e4SLinus Torvalds If unsure, say N. 18361da177e4SLinus Torvalds 18371da177e4SLinus Torvaldsconfig SMB_FS 18381da177e4SLinus Torvalds tristate "SMB file system support (to mount Windows shares etc.)" 18391da177e4SLinus Torvalds depends on INET 18401da177e4SLinus Torvalds select NLS 18411da177e4SLinus Torvalds help 18421da177e4SLinus Torvalds SMB (Server Message Block) is the protocol Windows for Workgroups 18431da177e4SLinus Torvalds (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 18441da177e4SLinus Torvalds files and printers over local networks. Saying Y here allows you to 18451da177e4SLinus Torvalds mount their file systems (often called "shares" in this context) and 18461da177e4SLinus Torvalds access them just like any other Unix directory. Currently, this 18471da177e4SLinus Torvalds works only if the Windows machines use TCP/IP as the underlying 18481da177e4SLinus Torvalds transport protocol, and not NetBEUI. For details, read 18491da177e4SLinus Torvalds <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 18501da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>. 18511da177e4SLinus Torvalds 18521da177e4SLinus Torvalds Note: if you just want your box to act as an SMB *server* and make 18531da177e4SLinus Torvalds files and printing services available to Windows clients (which need 18541da177e4SLinus Torvalds to have a TCP/IP stack), you don't need to say Y here; you can use 18551da177e4SLinus Torvalds the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 18561da177e4SLinus Torvalds for that. 18571da177e4SLinus Torvalds 18581da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 18591da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds To compile the SMB support as a module, choose M here: the module will 18621da177e4SLinus Torvalds be called smbfs. Most people say N, however. 18631da177e4SLinus Torvalds 18641da177e4SLinus Torvaldsconfig SMB_NLS_DEFAULT 18651da177e4SLinus Torvalds bool "Use a default NLS" 18661da177e4SLinus Torvalds depends on SMB_FS 18671da177e4SLinus Torvalds help 18681da177e4SLinus Torvalds Enabling this will make smbfs use nls translations by default. You 18691da177e4SLinus Torvalds need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 18701da177e4SLinus Torvalds settings and you need to give the default nls for the SMB server as 18711da177e4SLinus Torvalds CONFIG_SMB_NLS_REMOTE. 18721da177e4SLinus Torvalds 18731da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18741da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18751da177e4SLinus Torvalds 18761da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 18771da177e4SLinus Torvalds 18781da177e4SLinus Torvaldsconfig SMB_NLS_REMOTE 18791da177e4SLinus Torvalds string "Default Remote NLS Option" 18801da177e4SLinus Torvalds depends on SMB_NLS_DEFAULT 18811da177e4SLinus Torvalds default "cp437" 18821da177e4SLinus Torvalds help 18831da177e4SLinus Torvalds This setting allows you to specify a default value for which 18841da177e4SLinus Torvalds codepage the server uses. If this field is left blank no 18851da177e4SLinus Torvalds translations will be done by default. The local codepage/charset 18861da177e4SLinus Torvalds default to CONFIG_NLS_DEFAULT. 18871da177e4SLinus Torvalds 18881da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18891da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18901da177e4SLinus Torvalds 18911da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 18921da177e4SLinus Torvalds 18931da177e4SLinus Torvaldsconfig CIFS 18941da177e4SLinus Torvalds tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 18951da177e4SLinus Torvalds depends on INET 18961da177e4SLinus Torvalds select NLS 18971da177e4SLinus Torvalds help 18981da177e4SLinus Torvalds This is the client VFS module for the Common Internet File System 18991da177e4SLinus Torvalds (CIFS) protocol which is the successor to the Server Message Block 19001da177e4SLinus Torvalds (SMB) protocol, the native file sharing mechanism for most early 19011da177e4SLinus Torvalds PC operating systems. The CIFS protocol is fully supported by 19021da177e4SLinus Torvalds file servers such as Windows 2000 (including Windows 2003, NT 4 19031da177e4SLinus Torvalds and Windows XP) as well by Samba (which provides excellent CIFS 1904ec58ef03SSteve French server support for Linux and many other operating systems). Limited 19056103335dSSteve French support for OS/2 and Windows ME and similar servers is provided as 19066103335dSSteve French well. 19071da177e4SLinus Torvalds 19086103335dSSteve French The cifs module provides an advanced network file system 19096103335dSSteve French client for mounting to CIFS compliant servers. It includes 19106103335dSSteve French support for DFS (hierarchical name space), secure per-user 19116103335dSSteve French session establishment via Kerberos or NTLM or NTLMv2, 19126103335dSSteve French safe distributed caching (oplock), optional packet 19136103335dSSteve French signing, Unicode and other internationalization improvements. 19148af18971SSteve French If you need to mount to Samba or Windows from this machine, say Y. 19151da177e4SLinus Torvalds 19161da177e4SLinus Torvaldsconfig CIFS_STATS 19171da177e4SLinus Torvalds bool "CIFS statistics" 19181da177e4SLinus Torvalds depends on CIFS 19191da177e4SLinus Torvalds help 19201da177e4SLinus Torvalds Enabling this option will cause statistics for each server share 19211da177e4SLinus Torvalds mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 19221da177e4SLinus Torvalds 1923ec58ef03SSteve Frenchconfig CIFS_STATS2 19243979877eSSteve French bool "Extended statistics" 1925ec58ef03SSteve French depends on CIFS_STATS 1926ec58ef03SSteve French help 1927ec58ef03SSteve French Enabling this option will allow more detailed statistics on SMB 1928ec58ef03SSteve French request timing to be displayed in /proc/fs/cifs/DebugData and also 1929ec58ef03SSteve French allow optional logging of slow responses to dmesg (depending on the 1930ec58ef03SSteve French value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1931ec58ef03SSteve French These additional statistics may have a minor effect on performance 1932ec58ef03SSteve French and memory utilization. 1933ec58ef03SSteve French 1934ec58ef03SSteve French Unless you are a developer or are doing network performance analysis 1935ec58ef03SSteve French or tuning, say N. 1936ec58ef03SSteve French 19373979877eSSteve Frenchconfig CIFS_WEAK_PW_HASH 19383979877eSSteve French bool "Support legacy servers which use weaker LANMAN security" 19393979877eSSteve French depends on CIFS 19403979877eSSteve French help 19413979877eSSteve French Modern CIFS servers including Samba and most Windows versions 19423979877eSSteve French (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 19433979877eSSteve French security mechanisms. These hash the password more securely 19443979877eSSteve French than the mechanisms used in the older LANMAN version of the 19456103335dSSteve French SMB protocol but LANMAN based authentication is needed to 19466103335dSSteve French establish sessions with some old SMB servers. 19473979877eSSteve French 19483979877eSSteve French Enabling this option allows the cifs module to mount to older 19493979877eSSteve French LANMAN based servers such as OS/2 and Windows 95, but such 19503979877eSSteve French mounts may be less secure than mounts using NTLM or more recent 19513979877eSSteve French security mechanisms if you are on a public network. Unless you 19523979877eSSteve French have a need to access old SMB servers (and are on a private 19533979877eSSteve French network) you probably want to say N. Even if this support 19546103335dSSteve French is enabled in the kernel build, LANMAN authentication will not be 19556103335dSSteve French used automatically. At runtime LANMAN mounts are disabled but 19563979877eSSteve French can be set to required (or optional) either in 19573979877eSSteve French /proc/fs/cifs (see fs/cifs/README for more detail) or via an 19583979877eSSteve French option on the mount command. This support is disabled by 19593979877eSSteve French default in order to reduce the possibility of a downgrade 19603979877eSSteve French attack. 19613979877eSSteve French 19623979877eSSteve French If unsure, say N. 19633979877eSSteve French 19641da177e4SLinus Torvaldsconfig CIFS_XATTR 1965ec58ef03SSteve French bool "CIFS extended attributes" 19661da177e4SLinus Torvalds depends on CIFS 19671da177e4SLinus Torvalds help 19681da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 19691da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 19701da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). CIFS maps the name of 19711da177e4SLinus Torvalds extended attributes beginning with the user namespace prefix 19721da177e4SLinus Torvalds to SMB/CIFS EAs. EAs are stored on Windows servers without the 19731da177e4SLinus Torvalds user namespace prefix, but their names are seen by Linux cifs clients 19741da177e4SLinus Torvalds prefaced by the user namespace prefix. The system namespace 19751da177e4SLinus Torvalds (used by some filesystems to store ACLs) is not supported at 19761da177e4SLinus Torvalds this time. 19771da177e4SLinus Torvalds 19781da177e4SLinus Torvalds If unsure, say N. 19791da177e4SLinus Torvalds 19801da177e4SLinus Torvaldsconfig CIFS_POSIX 1981ec58ef03SSteve French bool "CIFS POSIX Extensions" 19821da177e4SLinus Torvalds depends on CIFS_XATTR 19831da177e4SLinus Torvalds help 19841da177e4SLinus Torvalds Enabling this option will cause the cifs client to attempt to 19851da177e4SLinus Torvalds negotiate a newer dialect with servers, such as Samba 3.0.5 19861da177e4SLinus Torvalds or later, that optionally can handle more POSIX like (rather 19871da177e4SLinus Torvalds than Windows like) file behavior. It also enables 19881da177e4SLinus Torvalds support for POSIX ACLs (getfacl and setfacl) to servers 19891da177e4SLinus Torvalds (such as Samba 3.10 and later) which can negotiate 19901da177e4SLinus Torvalds CIFS POSIX ACL support. If unsure, say N. 19911da177e4SLinus Torvalds 19923979877eSSteve Frenchconfig CIFS_DEBUG2 19933856a9d4SSteve French bool "Enable additional CIFS debugging routines" 19948ba10ab1SSteve French depends on CIFS 19953979877eSSteve French help 19963979877eSSteve French Enabling this option adds a few more debugging routines 19973979877eSSteve French to the cifs code which slightly increases the size of 19983979877eSSteve French the cifs module and can cause additional logging of debug 19993979877eSSteve French messages in some error paths, slowing performance. This 20003979877eSSteve French option can be turned off unless you are debugging 20013979877eSSteve French cifs problems. If unsure, say N. 20023979877eSSteve French 20031da177e4SLinus Torvaldsconfig CIFS_EXPERIMENTAL 20041da177e4SLinus Torvalds bool "CIFS Experimental Features (EXPERIMENTAL)" 2005cb9dbff9SSteve French depends on CIFS && EXPERIMENTAL 20061da177e4SLinus Torvalds help 2007ec58ef03SSteve French Enables cifs features under testing. These features are 20088af18971SSteve French experimental and currently include DFS support and directory 20098af18971SSteve French change notification ie fcntl(F_DNOTIFY), as well as the upcall 20108af18971SSteve French mechanism which will be used for Kerberos session negotiation 20118af18971SSteve French and uid remapping. Some of these features also may depend on 20128af18971SSteve French setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 20138af18971SSteve French (which is disabled by default). See the file fs/cifs/README 20148af18971SSteve French for more details. If unsure, say N. 20151da177e4SLinus Torvalds 2016a2653ebaSSteve Frenchconfig CIFS_UPCALL 20173979877eSSteve French bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)" 2018a2653ebaSSteve French depends on CIFS_EXPERIMENTAL 201909fe7ba7SJeff Layton depends on KEYS 2020a2653ebaSSteve French help 20216103335dSSteve French Enables an upcall mechanism for CIFS which accesses 20226103335dSSteve French userspace helper utilities to provide SPNEGO packaged (RFC 4178) 20236103335dSSteve French Kerberos tickets which are needed to mount to certain secure servers 20241b397f4fSSteve French (for which more secure Kerberos authentication is required). If 20251b397f4fSSteve French unsure, say N. 2026a2653ebaSSteve French 20276103335dSSteve Frenchconfig CIFS_DFS_UPCALL 20286103335dSSteve French bool "DFS feature support (EXPERIMENTAL)" 20296103335dSSteve French depends on CIFS_EXPERIMENTAL 20306103335dSSteve French depends on KEYS 20316103335dSSteve French help 20326103335dSSteve French Enables an upcall mechanism for CIFS which contacts userspace 20336103335dSSteve French helper utilities to provide server name resolution (host names to 20346103335dSSteve French IP addresses) which is needed for implicit mounts of DFS junction 20356103335dSSteve French points. If unsure, say N. 20366103335dSSteve French 20371da177e4SLinus Torvaldsconfig NCP_FS 20381da177e4SLinus Torvalds tristate "NCP file system support (to mount NetWare volumes)" 20391da177e4SLinus Torvalds depends on IPX!=n || INET 20401da177e4SLinus Torvalds help 20411da177e4SLinus Torvalds NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 20421da177e4SLinus Torvalds used by Novell NetWare clients to talk to file servers. It is to 20431da177e4SLinus Torvalds IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 20441da177e4SLinus Torvalds to mount NetWare file server volumes and to access them just like 20451da177e4SLinus Torvalds any other Unix directory. For details, please read the file 20461da177e4SLinus Torvalds <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 20471da177e4SLinus Torvalds the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 20481da177e4SLinus Torvalds 20491da177e4SLinus Torvalds You do not have to say Y here if you want your Linux box to act as a 20501da177e4SLinus Torvalds file *server* for Novell NetWare clients. 20511da177e4SLinus Torvalds 20521da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 20531da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 20561da177e4SLinus Torvalds ncpfs. Say N unless you are connected to a Novell network. 20571da177e4SLinus Torvalds 20581da177e4SLinus Torvaldssource "fs/ncpfs/Kconfig" 20591da177e4SLinus Torvalds 20601da177e4SLinus Torvaldsconfig CODA_FS 20611da177e4SLinus Torvalds tristate "Coda file system support (advanced network fs)" 20621da177e4SLinus Torvalds depends on INET 20631da177e4SLinus Torvalds help 20641da177e4SLinus Torvalds Coda is an advanced network file system, similar to NFS in that it 20651da177e4SLinus Torvalds enables you to mount file systems of a remote server and access them 20661da177e4SLinus Torvalds with regular Unix commands as if they were sitting on your hard 20671da177e4SLinus Torvalds disk. Coda has several advantages over NFS: support for 20681da177e4SLinus Torvalds disconnected operation (e.g. for laptops), read/write server 20691da177e4SLinus Torvalds replication, security model for authentication and encryption, 20701da177e4SLinus Torvalds persistent client caches and write back caching. 20711da177e4SLinus Torvalds 20721da177e4SLinus Torvalds If you say Y here, your Linux box will be able to act as a Coda 20731da177e4SLinus Torvalds *client*. You will need user level code as well, both for the 20741da177e4SLinus Torvalds client and server. Servers are currently user level, i.e. they need 20751da177e4SLinus Torvalds no kernel support. Please read 20761da177e4SLinus Torvalds <file:Documentation/filesystems/coda.txt> and check out the Coda 20771da177e4SLinus Torvalds home page <http://www.coda.cs.cmu.edu/>. 20781da177e4SLinus Torvalds 20791da177e4SLinus Torvalds To compile the coda client support as a module, choose M here: the 20801da177e4SLinus Torvalds module will be called coda. 20811da177e4SLinus Torvalds 20821da177e4SLinus Torvaldsconfig CODA_FS_OLD_API 20831da177e4SLinus Torvalds bool "Use 96-bit Coda file identifiers" 20841da177e4SLinus Torvalds depends on CODA_FS 20851da177e4SLinus Torvalds help 20861da177e4SLinus Torvalds A new kernel-userspace API had to be introduced for Coda v6.0 20871da177e4SLinus Torvalds to support larger 128-bit file identifiers as needed by the 20881da177e4SLinus Torvalds new realms implementation. 20891da177e4SLinus Torvalds 20901da177e4SLinus Torvalds However this new API is not backward compatible with older 20911da177e4SLinus Torvalds clients. If you really need to run the old Coda userspace 20921da177e4SLinus Torvalds cache manager then say Y. 20931da177e4SLinus Torvalds 20941da177e4SLinus Torvalds For most cases you probably want to say N. 20951da177e4SLinus Torvalds 20961da177e4SLinus Torvaldsconfig AFS_FS 209764aaa4f8SDavid Howells tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 20981da177e4SLinus Torvalds depends on INET && EXPERIMENTAL 209908e0e7c8SDavid Howells select AF_RXRPC 21001da177e4SLinus Torvalds help 21011da177e4SLinus Torvalds If you say Y here, you will get an experimental Andrew File System 21021da177e4SLinus Torvalds driver. It currently only supports unsecured read-only AFS access. 21031da177e4SLinus Torvalds 2104cc2e2767SMatt LaPlante See <file:Documentation/filesystems/afs.txt> for more information. 21051da177e4SLinus Torvalds 21061da177e4SLinus Torvalds If unsure, say N. 21071da177e4SLinus Torvalds 210808e0e7c8SDavid Howellsconfig AFS_DEBUG 210908e0e7c8SDavid Howells bool "AFS dynamic debugging" 211008e0e7c8SDavid Howells depends on AFS_FS 211108e0e7c8SDavid Howells help 211208e0e7c8SDavid Howells Say Y here to make runtime controllable debugging messages appear. 211308e0e7c8SDavid Howells 211408e0e7c8SDavid Howells See <file:Documentation/filesystems/afs.txt> for more information. 211508e0e7c8SDavid Howells 211608e0e7c8SDavid Howells If unsure, say N. 211708e0e7c8SDavid Howells 211893fa58cbSEric Van Hensbergenconfig 9P_FS 211993fa58cbSEric Van Hensbergen tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2120bd238fb4SLatchesar Ionkov depends on INET && NET_9P && EXPERIMENTAL 212193fa58cbSEric Van Hensbergen help 212293fa58cbSEric Van Hensbergen If you say Y here, you will get experimental support for 212393fa58cbSEric Van Hensbergen Plan 9 resource sharing via the 9P2000 protocol. 212493fa58cbSEric Van Hensbergen 212593fa58cbSEric Van Hensbergen See <http://v9fs.sf.net> for more information. 212693fa58cbSEric Van Hensbergen 212793fa58cbSEric Van Hensbergen If unsure, say N. 212893fa58cbSEric Van Hensbergen 2129ea0985adSJan Engelhardtendif # NETWORK_FILESYSTEMS 21301da177e4SLinus Torvalds 21319361401eSDavid Howellsif BLOCK 21321da177e4SLinus Torvaldsmenu "Partition Types" 21331da177e4SLinus Torvalds 21341da177e4SLinus Torvaldssource "fs/partitions/Kconfig" 21351da177e4SLinus Torvalds 21361da177e4SLinus Torvaldsendmenu 21379361401eSDavid Howellsendif 21381da177e4SLinus Torvalds 21391da177e4SLinus Torvaldssource "fs/nls/Kconfig" 2140e7fd4179SDavid Teiglandsource "fs/dlm/Kconfig" 21411da177e4SLinus Torvalds 21421da177e4SLinus Torvaldsendmenu 2143