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 143*717d50e4SAndreas 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" 2231da177e4SLinus Torvalds depends on JBD 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 2321da177e4SLinus Torvalds with "echo N > /proc/sys/fs/jbd-debug", where N is a number between 2331da177e4SLinus Torvalds 1 and 5, the higher the number, the more debugging output is 2341da177e4SLinus Torvalds generated. To turn debugging off again, do 2351da177e4SLinus Torvalds "echo 0 > /proc/sys/fs/jbd-debug". 2361da177e4SLinus Torvalds 237dab291afSMingming Caoconfig JBD2 238dab291afSMingming Cao tristate 239dab291afSMingming Cao help 240dab291afSMingming Cao This is a generic journaling layer for block devices that support 241dab291afSMingming Cao both 32-bit and 64-bit block numbers. It is currently used by 242dab291afSMingming Cao the ext4dev/ext4 filesystem, but it could also be used to add 243dab291afSMingming Cao journal support to other file systems or block devices such 244dab291afSMingming Cao as RAID or LVM. 245dab291afSMingming Cao 246dab291afSMingming Cao If you are using ext4dev/ext4, you need to say Y here. If you are not 247dab291afSMingming Cao using ext4dev/ext4 then you will probably want to say N. 248dab291afSMingming Cao 249dab291afSMingming Cao To compile this device as a module, choose M here. The module will be 250dab291afSMingming Cao called jbd2. If you are compiling ext4dev/ext4 into the kernel, 251dab291afSMingming Cao you cannot compile this code as a module. 252dab291afSMingming Cao 253dab291afSMingming Caoconfig JBD2_DEBUG 254dab291afSMingming Cao bool "JBD2 (ext4dev/ext4) debugging support" 2550f49d5d0SJose R. Santos depends on JBD2 && DEBUG_FS 256dab291afSMingming Cao help 257dab291afSMingming Cao If you are using the ext4dev/ext4 journaled file system (or 258dab291afSMingming Cao potentially any other filesystem/device using JBD2), this option 259dab291afSMingming Cao allows you to enable debugging output while the system is running, 260dab291afSMingming Cao in order to help track down any problems you are having. 261dab291afSMingming Cao By default, the debugging output will be turned off. 262dab291afSMingming Cao 263dab291afSMingming Cao If you select Y here, then you will be able to turn on debugging 2640f49d5d0SJose R. Santos with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a 2650f49d5d0SJose R. Santos number between 1 and 5. The higher the number, the more debugging 2660f49d5d0SJose R. Santos output is generated. To turn debugging off again, do 2670f49d5d0SJose R. Santos "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug". 268dab291afSMingming Cao 2691da177e4SLinus Torvaldsconfig FS_MBCACHE 27002ea2104SMingming Cao# Meta block cache for Extended Attributes (ext2/ext3/ext4) 2711da177e4SLinus Torvalds tristate 27202ea2104SMingming Cao depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR 27302ea2104SMingming Cao default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y 27402ea2104SMingming Cao default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvaldsconfig REISERFS_FS 2771da177e4SLinus Torvalds tristate "Reiserfs support" 2781da177e4SLinus Torvalds help 2791da177e4SLinus Torvalds Stores not just filenames but the files themselves in a balanced 280cc2e2767SMatt LaPlante tree. Uses journalling. 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds Balanced trees are more efficient than traditional file system 2831da177e4SLinus Torvalds architectural foundations. 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds In general, ReiserFS is as fast as ext2, but is very efficient with 2861da177e4SLinus Torvalds large directories and small files. Additional patches are needed 2871da177e4SLinus Torvalds for NFS and quotas, please see <http://www.namesys.com/> for links. 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds It is more easily extended to have features currently found in 2901da177e4SLinus Torvalds database and keyword search systems than block allocation based file 2911da177e4SLinus Torvalds systems are. The next version will be so extended, and will support 2921da177e4SLinus Torvalds plugins consistent with our motto ``It takes more than a license to 2931da177e4SLinus Torvalds make source code open.'' 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds Read <http://www.namesys.com/> to learn more about reiserfs. 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com. 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds If you like it, you can pay us to add new features to it that you 3001da177e4SLinus Torvalds need, buy a support contract, or pay us to port it to another OS. 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvaldsconfig REISERFS_CHECK 3031da177e4SLinus Torvalds bool "Enable reiserfs debug mode" 3041da177e4SLinus Torvalds depends on REISERFS_FS 3051da177e4SLinus Torvalds help 3061da177e4SLinus Torvalds If you set this to Y, then ReiserFS will perform every check it can 3071da177e4SLinus Torvalds possibly imagine of its internal consistency throughout its 3081da177e4SLinus Torvalds operation. It will also go substantially slower. More than once we 3091da177e4SLinus Torvalds have forgotten that this was on, and then gone despondent over the 3101da177e4SLinus Torvalds latest benchmarks.:-) Use of this option allows our team to go all 3111da177e4SLinus Torvalds out in checking for consistency when debugging without fear of its 3121da177e4SLinus Torvalds effect on end users. If you are on the verge of sending in a bug 3131da177e4SLinus Torvalds report, say Y and you might get a useful error message. Almost 3141da177e4SLinus Torvalds everyone should say N. 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvaldsconfig REISERFS_PROC_INFO 3171da177e4SLinus Torvalds bool "Stats in /proc/fs/reiserfs" 318880ebdc5SRandy Dunlap depends on REISERFS_FS && PROC_FS 3191da177e4SLinus Torvalds help 3201da177e4SLinus Torvalds Create under /proc/fs/reiserfs a hierarchy of files, displaying 3211da177e4SLinus Torvalds various ReiserFS statistics and internal data at the expense of 3221da177e4SLinus Torvalds making your kernel or module slightly larger (+8 KB). This also 3231da177e4SLinus Torvalds increases the amount of kernel memory required for each mount. 3241da177e4SLinus Torvalds Almost everyone but ReiserFS developers and people fine-tuning 3251da177e4SLinus Torvalds reiserfs or tracing problems should say N. 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvaldsconfig REISERFS_FS_XATTR 3281da177e4SLinus Torvalds bool "ReiserFS extended attributes" 3291da177e4SLinus Torvalds depends on REISERFS_FS 3301da177e4SLinus Torvalds help 3311da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 3321da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 3331da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds If unsure, say N. 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvaldsconfig REISERFS_FS_POSIX_ACL 3381da177e4SLinus Torvalds bool "ReiserFS POSIX Access Control Lists" 3391da177e4SLinus Torvalds depends on REISERFS_FS_XATTR 340b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 3411da177e4SLinus Torvalds help 3421da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 3431da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 3461da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvaldsconfig REISERFS_FS_SECURITY 3511da177e4SLinus Torvalds bool "ReiserFS Security Labels" 3521da177e4SLinus Torvalds depends on REISERFS_FS_XATTR 3531da177e4SLinus Torvalds help 3541da177e4SLinus Torvalds Security labels support alternative access control models 3551da177e4SLinus Torvalds implemented by security modules like SELinux. This option 3561da177e4SLinus Torvalds enables an extended attribute handler for file security 3571da177e4SLinus Torvalds labels in the ReiserFS filesystem. 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds If you are not using a security module that requires using 3601da177e4SLinus Torvalds extended attributes for file security labels, say N. 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvaldsconfig JFS_FS 3631da177e4SLinus Torvalds tristate "JFS filesystem support" 3641da177e4SLinus Torvalds select NLS 3651da177e4SLinus Torvalds help 3661da177e4SLinus Torvalds This is a port of IBM's Journaled Filesystem . More information is 3671da177e4SLinus Torvalds available in the file <file:Documentation/filesystems/jfs.txt>. 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds If you do not intend to use the JFS filesystem, say N. 3701da177e4SLinus Torvalds 3711da177e4SLinus Torvaldsconfig JFS_POSIX_ACL 3721da177e4SLinus Torvalds bool "JFS POSIX Access Control Lists" 3731da177e4SLinus Torvalds depends on JFS_FS 374b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 3751da177e4SLinus Torvalds help 3761da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 3771da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 3801da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvaldsconfig JFS_SECURITY 3851da177e4SLinus Torvalds bool "JFS Security Labels" 3861da177e4SLinus Torvalds depends on JFS_FS 3871da177e4SLinus Torvalds help 3881da177e4SLinus Torvalds Security labels support alternative access control models 3891da177e4SLinus Torvalds implemented by security modules like SELinux. This option 3901da177e4SLinus Torvalds enables an extended attribute handler for file security 3911da177e4SLinus Torvalds labels in the jfs filesystem. 3921da177e4SLinus Torvalds 3931da177e4SLinus Torvalds If you are not using a security module that requires using 3941da177e4SLinus Torvalds extended attributes for file security labels, say N. 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvaldsconfig JFS_DEBUG 3971da177e4SLinus Torvalds bool "JFS debugging" 3981da177e4SLinus Torvalds depends on JFS_FS 3991da177e4SLinus Torvalds help 4001da177e4SLinus Torvalds If you are experiencing any problems with the JFS filesystem, say 4011da177e4SLinus Torvalds Y here. This will result in additional debugging messages to be 4021da177e4SLinus Torvalds written to the system log. Under normal circumstances, this 4031da177e4SLinus Torvalds results in very little overhead. 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvaldsconfig JFS_STATISTICS 4061da177e4SLinus Torvalds bool "JFS statistics" 4071da177e4SLinus Torvalds depends on JFS_FS 4081da177e4SLinus Torvalds help 4091da177e4SLinus Torvalds Enabling this option will cause statistics from the JFS file system 4101da177e4SLinus Torvalds to be made available to the user in the /proc/fs/jfs/ directory. 4111da177e4SLinus Torvalds 4121da177e4SLinus Torvaldsconfig FS_POSIX_ACL 4131da177e4SLinus Torvalds# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs) 4141da177e4SLinus Torvalds# 4151da177e4SLinus Torvalds# NOTE: you can implement Posix ACLs without these helpers (XFS does). 4161da177e4SLinus Torvalds# Never use this symbol for ifdefs. 4171da177e4SLinus Torvalds# 4181da177e4SLinus Torvalds bool 419b84c2157SAndreas Gruenbacher default n 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvaldssource "fs/xfs/Kconfig" 422f7825dcfSDavid Teiglandsource "fs/gfs2/Kconfig" 4231da177e4SLinus Torvalds 424b4e40a51SMark Fashehconfig OCFS2_FS 42502ed8416SMark Fasheh tristate "OCFS2 file system support" 42602ed8416SMark Fasheh depends on NET && SYSFS 427b4e40a51SMark Fasheh select CONFIGFS_FS 428b4e40a51SMark Fasheh select JBD 429b4e40a51SMark Fasheh select CRC32 430b4e40a51SMark Fasheh help 431b4e40a51SMark Fasheh OCFS2 is a general purpose extent based shared disk cluster file 432b4e40a51SMark Fasheh system with many similarities to ext3. It supports 64 bit inode 433b4e40a51SMark Fasheh numbers, and has automatically extending metadata groups which may 434b4e40a51SMark Fasheh also make it attractive for non-clustered use. 435b4e40a51SMark Fasheh 436b4e40a51SMark Fasheh You'll want to install the ocfs2-tools package in order to at least 437b4e40a51SMark Fasheh get "mount.ocfs2". 438b4e40a51SMark Fasheh 439b4e40a51SMark Fasheh Project web page: http://oss.oracle.com/projects/ocfs2 440b4e40a51SMark Fasheh Tools web page: http://oss.oracle.com/projects/ocfs2-tools 441b4e40a51SMark Fasheh OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/ 442b4e40a51SMark Fasheh 443b4e40a51SMark Fasheh Note: Features which OCFS2 does not support yet: 444b4e40a51SMark Fasheh - extended attributes 445b4e40a51SMark Fasheh - quotas 446b4e40a51SMark Fasheh - cluster aware flock 447b4e40a51SMark Fasheh - Directory change notification (F_NOTIFY) 448b4e40a51SMark Fasheh - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease) 449b4e40a51SMark Fasheh - POSIX ACLs 450b4e40a51SMark Fasheh - readpages / writepages (not user visible) 451b4e40a51SMark Fasheh 4522b388c67SJoel Beckerconfig OCFS2_DEBUG_MASKLOG 4532b388c67SJoel Becker bool "OCFS2 logging support" 4542b388c67SJoel Becker depends on OCFS2_FS 4552b388c67SJoel Becker default y 4562b388c67SJoel Becker help 4572b388c67SJoel Becker The ocfs2 filesystem has an extensive logging system. The system 4582b388c67SJoel Becker allows selection of events to log via files in /sys/o2cb/logmask/. 4592b388c67SJoel Becker This option will enlarge your kernel, but it allows debugging of 4602b388c67SJoel Becker ocfs2 filesystem issues. 4612b388c67SJoel Becker 4621da177e4SLinus Torvaldsconfig MINIX_FS 4631da177e4SLinus Torvalds tristate "Minix fs support" 4641da177e4SLinus Torvalds help 4651da177e4SLinus Torvalds Minix is a simple operating system used in many classes about OS's. 4661da177e4SLinus Torvalds The minix file system (method to organize files on a hard disk 4671da177e4SLinus Torvalds partition or a floppy disk) was the original file system for Linux, 4681da177e4SLinus Torvalds but has been superseded by the second extended file system ext2fs. 4691da177e4SLinus Torvalds You don't want to use the minix file system on your hard disk 4701da177e4SLinus Torvalds because of certain built-in restrictions, but it is sometimes found 4711da177e4SLinus Torvalds on older Linux floppy disks. This option will enlarge your kernel 4721da177e4SLinus Torvalds by about 28 KB. If unsure, say N. 4731da177e4SLinus Torvalds 4741da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 4751da177e4SLinus Torvalds module will be called minix. Note that the file system of your root 4761da177e4SLinus Torvalds partition (the one containing the directory /) cannot be compiled as 4771da177e4SLinus Torvalds a module. 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvaldsconfig ROMFS_FS 4801da177e4SLinus Torvalds tristate "ROM file system support" 4811da177e4SLinus Torvalds ---help--- 4821da177e4SLinus Torvalds This is a very small read-only file system mainly intended for 4831da177e4SLinus Torvalds initial ram disks of installation disks, but it could be used for 4841da177e4SLinus Torvalds other read-only media as well. Read 4851da177e4SLinus Torvalds <file:Documentation/filesystems/romfs.txt> for details. 4861da177e4SLinus Torvalds 4871da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 4881da177e4SLinus Torvalds module will be called romfs. Note that the file system of your 4891da177e4SLinus Torvalds root partition (the one containing the directory /) cannot be a 4901da177e4SLinus Torvalds module. 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 4931da177e4SLinus Torvalds answer N. 4941da177e4SLinus Torvalds 4959361401eSDavid Howellsendif 4969361401eSDavid Howells 4970eeca283SRobert Loveconfig INOTIFY 4980eeca283SRobert Love bool "Inotify file change notification support" 4990eeca283SRobert Love default y 5000eeca283SRobert Love ---help--- 5012d9048e2SAmy Griffis Say Y here to enable inotify support. Inotify is a file change 5022d9048e2SAmy Griffis notification system and a replacement for dnotify. Inotify fixes 5032d9048e2SAmy Griffis numerous shortcomings in dnotify and introduces several new features 5042d9048e2SAmy Griffis including multiple file events, one-shot support, and unmount 5053de11748SRobert Love notification. 5063de11748SRobert Love 5073de11748SRobert Love For more information, see Documentation/filesystems/inotify.txt 5080eeca283SRobert Love 5090eeca283SRobert Love If unsure, say Y. 5100eeca283SRobert Love 5112d9048e2SAmy Griffisconfig INOTIFY_USER 5122d9048e2SAmy Griffis bool "Inotify support for userspace" 5132d9048e2SAmy Griffis depends on INOTIFY 5142d9048e2SAmy Griffis default y 5152d9048e2SAmy Griffis ---help--- 5162d9048e2SAmy Griffis Say Y here to enable inotify support for userspace, including the 5172d9048e2SAmy Griffis associated system calls. Inotify allows monitoring of both files and 5182d9048e2SAmy Griffis directories via a single open fd. Events are read from the file 5192d9048e2SAmy Griffis descriptor, which is also select()- and poll()-able. 5202d9048e2SAmy Griffis 5212d9048e2SAmy Griffis For more information, see Documentation/filesystems/inotify.txt 5222d9048e2SAmy Griffis 5232d9048e2SAmy Griffis If unsure, say Y. 5242d9048e2SAmy Griffis 5251da177e4SLinus Torvaldsconfig QUOTA 5261da177e4SLinus Torvalds bool "Quota support" 5271da177e4SLinus Torvalds help 5281da177e4SLinus Torvalds If you say Y here, you will be able to set per user limits for disk 5291da177e4SLinus Torvalds usage (also called disk quotas). Currently, it works for the 5301da177e4SLinus Torvalds ext2, ext3, and reiserfs file system. ext3 also supports journalled 5311da177e4SLinus Torvalds quotas for which you don't need to run quotacheck(8) after an unclean 532919532a5SAdrian Bunk shutdown. 533919532a5SAdrian Bunk For further details, read the Quota mini-HOWTO, available from 5341da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or the documentation provided 5351da177e4SLinus Torvalds with the quota tools. Probably the quota support is only useful for 5361da177e4SLinus Torvalds multi user systems. If unsure, say N. 5371da177e4SLinus Torvalds 5388e893469SJan Karaconfig QUOTA_NETLINK_INTERFACE 5398e893469SJan Kara bool "Report quota messages through netlink interface" 5408e893469SJan Kara depends on QUOTA && NET 5418e893469SJan Kara help 5428e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5438e893469SJan Kara hardlimit, etc.) will be reported through netlink interface. If unsure, 5448e893469SJan Kara say Y. 5458e893469SJan Kara 5468e893469SJan Karaconfig PRINT_QUOTA_WARNING 5478e893469SJan Kara bool "Print quota warnings to console (OBSOLETE)" 5488e893469SJan Kara depends on QUOTA 5498e893469SJan Kara default y 5508e893469SJan Kara help 5518e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5528e893469SJan Kara hardlimit, etc.) will be printed to the process' controlling terminal. 5538e893469SJan Kara Note that this behavior is currently deprecated and may go away in 5548e893469SJan Kara future. Please use notification via netlink socket instead. 5558e893469SJan Kara 5561da177e4SLinus Torvaldsconfig QFMT_V1 5571da177e4SLinus Torvalds tristate "Old quota format support" 5581da177e4SLinus Torvalds depends on QUOTA 5591da177e4SLinus Torvalds help 5601da177e4SLinus Torvalds This quota format was (is) used by kernels earlier than 2.4.22. If 5611da177e4SLinus Torvalds you have quota working and you don't want to convert to new quota 5621da177e4SLinus Torvalds format say Y here. 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvaldsconfig QFMT_V2 5651da177e4SLinus Torvalds tristate "Quota format v2 support" 5661da177e4SLinus Torvalds depends on QUOTA 5671da177e4SLinus Torvalds help 5681da177e4SLinus Torvalds This quota format allows using quotas with 32-bit UIDs/GIDs. If you 569919532a5SAdrian Bunk need this functionality say Y here. 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvaldsconfig QUOTACTL 5721da177e4SLinus Torvalds bool 5731da177e4SLinus Torvalds depends on XFS_QUOTA || QUOTA 5741da177e4SLinus Torvalds default y 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvaldsconfig DNOTIFY 5777e341fa1SAdrian Bunk bool "Dnotify support" 5781da177e4SLinus Torvalds default y 5791da177e4SLinus Torvalds help 5801da177e4SLinus Torvalds Dnotify is a directory-based per-fd file change notification system 5811da177e4SLinus Torvalds that uses signals to communicate events to user-space. There exist 5821da177e4SLinus Torvalds superior alternatives, but some applications may still rely on 5831da177e4SLinus Torvalds dnotify. 5841da177e4SLinus Torvalds 5857e341fa1SAdrian Bunk If unsure, say Y. 5861da177e4SLinus Torvalds 5871da177e4SLinus Torvaldsconfig AUTOFS_FS 5881da177e4SLinus Torvalds tristate "Kernel automounter support" 5891da177e4SLinus Torvalds help 5901da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 5911da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 5921da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 5931da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds To use the automounter you need the user-space tools from the autofs 5961da177e4SLinus Torvalds package; you can find the location in <file:Documentation/Changes>. 5971da177e4SLinus Torvalds You also want to answer Y to "NFS file system support", below. 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds If you want to use the newer version of the automounter with more 6001da177e4SLinus Torvalds features, say N here and say Y to "Kernel automounter v4 support", 6011da177e4SLinus Torvalds below. 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6041da177e4SLinus Torvalds called autofs. 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network, you 6071da177e4SLinus Torvalds probably do not need an automounter, and can say N here. 6081da177e4SLinus Torvalds 6091da177e4SLinus Torvaldsconfig AUTOFS4_FS 6101da177e4SLinus Torvalds tristate "Kernel automounter version 4 support (also supports v3)" 6111da177e4SLinus Torvalds help 6121da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 6131da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 6141da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 6151da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds To use the automounter you need the user-space tools from 6181da177e4SLinus Torvalds <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 6191da177e4SLinus Torvalds want to answer Y to "NFS file system support", below. 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6221da177e4SLinus Torvalds called autofs4. You will need to add "alias autofs autofs4" to your 6231da177e4SLinus Torvalds modules configuration file. 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network or 6261da177e4SLinus Torvalds don't have a laptop which needs to dynamically reconfigure to the 6271da177e4SLinus Torvalds local network, you probably do not need an automounter, and can say 6281da177e4SLinus Torvalds N here. 6291da177e4SLinus Torvalds 63004578f17SMiklos Szerediconfig FUSE_FS 63104578f17SMiklos Szeredi tristate "Filesystem in Userspace support" 63204578f17SMiklos Szeredi help 63304578f17SMiklos Szeredi With FUSE it is possible to implement a fully functional filesystem 63404578f17SMiklos Szeredi in a userspace program. 63504578f17SMiklos Szeredi 63604578f17SMiklos Szeredi There's also companion library: libfuse. This library along with 63704578f17SMiklos Szeredi utilities is available from the FUSE homepage: 63804578f17SMiklos Szeredi <http://fuse.sourceforge.net/> 63904578f17SMiklos Szeredi 640909021eaSMiklos Szeredi See <file:Documentation/filesystems/fuse.txt> for more information. 641909021eaSMiklos Szeredi See <file:Documentation/Changes> for needed library/utility version. 642909021eaSMiklos Szeredi 64304578f17SMiklos Szeredi If you want to develop a userspace FS, or if you want to use 64404578f17SMiklos Szeredi a filesystem based on FUSE, answer Y or M. 64504578f17SMiklos Szeredi 646f2fbc6c2SRandy Dunlapconfig GENERIC_ACL 647f2fbc6c2SRandy Dunlap bool 648f2fbc6c2SRandy Dunlap select FS_POSIX_ACL 649f2fbc6c2SRandy Dunlap 6509361401eSDavid Howellsif BLOCK 6511da177e4SLinus Torvaldsmenu "CD-ROM/DVD Filesystems" 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvaldsconfig ISO9660_FS 6541da177e4SLinus Torvalds tristate "ISO 9660 CDROM file system support" 6551da177e4SLinus Torvalds help 6561da177e4SLinus Torvalds This is the standard file system used on CD-ROMs. It was previously 6571da177e4SLinus Torvalds known as "High Sierra File System" and is called "hsfs" on other 6581da177e4SLinus Torvalds Unix systems. The so-called Rock-Ridge extensions which allow for 6591da177e4SLinus Torvalds long Unix filenames and symbolic links are also supported by this 6601da177e4SLinus Torvalds driver. If you have a CD-ROM drive and want to do more with it than 6611da177e4SLinus Torvalds just listen to audio CDs and watch its LEDs, say Y (and read 6621da177e4SLinus Torvalds <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 6631da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>), thereby 6641da177e4SLinus Torvalds enlarging your kernel by about 27 KB; otherwise say N. 6651da177e4SLinus Torvalds 6661da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 6671da177e4SLinus Torvalds module will be called isofs. 6681da177e4SLinus Torvalds 6691da177e4SLinus Torvaldsconfig JOLIET 6701da177e4SLinus Torvalds bool "Microsoft Joliet CDROM extensions" 6711da177e4SLinus Torvalds depends on ISO9660_FS 6721da177e4SLinus Torvalds select NLS 6731da177e4SLinus Torvalds help 6741da177e4SLinus Torvalds Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 6751da177e4SLinus Torvalds which allows for long filenames in unicode format (unicode is the 6761da177e4SLinus Torvalds new 16 bit character code, successor to ASCII, which encodes the 6771da177e4SLinus Torvalds characters of almost all languages of the world; see 6781da177e4SLinus Torvalds <http://www.unicode.org/> for more information). Say Y here if you 6791da177e4SLinus Torvalds want to be able to read Joliet CD-ROMs under Linux. 6801da177e4SLinus Torvalds 6811da177e4SLinus Torvaldsconfig ZISOFS 6821da177e4SLinus Torvalds bool "Transparent decompression extension" 6831da177e4SLinus Torvalds depends on ISO9660_FS 6841da177e4SLinus Torvalds select ZLIB_INFLATE 6851da177e4SLinus Torvalds help 6861da177e4SLinus Torvalds This is a Linux-specific extension to RockRidge which lets you store 6871da177e4SLinus Torvalds data in compressed form on a CD-ROM and have it transparently 6881da177e4SLinus Torvalds decompressed when the CD-ROM is accessed. See 6891da177e4SLinus Torvalds <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 6901da177e4SLinus Torvalds necessary to create such a filesystem. Say Y here if you want to be 6911da177e4SLinus Torvalds able to read such compressed CD-ROMs. 6921da177e4SLinus Torvalds 6931da177e4SLinus Torvaldsconfig UDF_FS 6941da177e4SLinus Torvalds tristate "UDF file system support" 6951da177e4SLinus Torvalds help 6961da177e4SLinus Torvalds This is the new file system used on some CD-ROMs and DVDs. Say Y if 6971da177e4SLinus Torvalds you intend to mount DVD discs or CDRW's written in packet mode, or 6981da177e4SLinus Torvalds if written to by other UDF utilities, such as DirectCD. 6991da177e4SLinus Torvalds Please read <file:Documentation/filesystems/udf.txt>. 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 7021da177e4SLinus Torvalds module will be called udf. 7031da177e4SLinus Torvalds 7041da177e4SLinus Torvalds If unsure, say N. 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvaldsconfig UDF_NLS 7071da177e4SLinus Torvalds bool 7081da177e4SLinus Torvalds default y 7091da177e4SLinus Torvalds depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvaldsendmenu 7129361401eSDavid Howellsendif 7131da177e4SLinus Torvalds 7149361401eSDavid Howellsif BLOCK 7151da177e4SLinus Torvaldsmenu "DOS/FAT/NT Filesystems" 7161da177e4SLinus Torvalds 7171da177e4SLinus Torvaldsconfig FAT_FS 7181da177e4SLinus Torvalds tristate 7191da177e4SLinus Torvalds select NLS 7201da177e4SLinus Torvalds help 7211da177e4SLinus Torvalds If you want to use one of the FAT-based file systems (the MS-DOS and 7221da177e4SLinus Torvalds VFAT (Windows 95) file systems), then you must say Y or M here 7231da177e4SLinus Torvalds to include FAT support. You will then be able to mount partitions or 7241da177e4SLinus Torvalds diskettes with FAT-based file systems and transparently access the 7251da177e4SLinus Torvalds files on them, i.e. MSDOS files will look and behave just like all 7261da177e4SLinus Torvalds other Unix files. 7271da177e4SLinus Torvalds 7281da177e4SLinus Torvalds This FAT support is not a file system in itself, it only provides 7291da177e4SLinus Torvalds the foundation for the other file systems. You will have to say Y or 7301da177e4SLinus Torvalds M to at least one of "MSDOS fs support" or "VFAT fs support" in 7311da177e4SLinus Torvalds order to make use of it. 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds Another way to read and write MSDOS floppies and hard drive 7341da177e4SLinus Torvalds partitions from within Linux (but not transparently) is with the 7351da177e4SLinus Torvalds mtools ("man mtools") program suite. You don't need to say Y here in 7361da177e4SLinus Torvalds order to do that. 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds If you need to move large files on floppies between a DOS and a 7391da177e4SLinus Torvalds Linux box, say Y here, mount the floppy under Linux with an MSDOS 7401da177e4SLinus Torvalds file system and use GNU tar's M option. GNU tar is a program 7411da177e4SLinus Torvalds available for Unix and DOS ("man tar" or "info tar"). 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds The FAT support will enlarge your kernel by about 37 KB. If unsure, 7441da177e4SLinus Torvalds say Y. 7451da177e4SLinus Torvalds 7461da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 7471da177e4SLinus Torvalds fat. Note that if you compile the FAT support as a module, you 7481da177e4SLinus Torvalds cannot compile any of the FAT-based file systems into the kernel 7491da177e4SLinus Torvalds -- they will have to be modules as well. 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvaldsconfig MSDOS_FS 7521da177e4SLinus Torvalds tristate "MSDOS fs support" 7531da177e4SLinus Torvalds select FAT_FS 7541da177e4SLinus Torvalds help 7551da177e4SLinus Torvalds This allows you to mount MSDOS partitions of your hard drive (unless 7561da177e4SLinus Torvalds they are compressed; to access compressed MSDOS partitions under 7571da177e4SLinus Torvalds Linux, you can either use the DOS emulator DOSEMU, described in the 7581da177e4SLinus Torvalds DOSEMU-HOWTO, available from 7591da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 7601da177e4SLinus Torvalds <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 7611da177e4SLinus Torvalds intend to use dosemu with a non-compressed MSDOS partition, say Y 7621da177e4SLinus Torvalds here) and MSDOS floppies. This means that file access becomes 7631da177e4SLinus Torvalds transparent, i.e. the MSDOS files look and behave just like all 7641da177e4SLinus Torvalds other Unix files. 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds If you have Windows 95 or Windows NT installed on your MSDOS 7671da177e4SLinus Torvalds partitions, you should use the VFAT file system (say Y to "VFAT fs 7681da177e4SLinus Torvalds support" below), or you will not be able to see the long filenames 7691da177e4SLinus Torvalds generated by Windows 95 / Windows NT. 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds This option will enlarge your kernel by about 7 KB. If unsure, 7721da177e4SLinus Torvalds answer Y. This will only work if you said Y to "DOS FAT fs support" 7731da177e4SLinus Torvalds as well. To compile this as a module, choose M here: the module will 7741da177e4SLinus Torvalds be called msdos. 7751da177e4SLinus Torvalds 7761da177e4SLinus Torvaldsconfig VFAT_FS 7771da177e4SLinus Torvalds tristate "VFAT (Windows-95) fs support" 7781da177e4SLinus Torvalds select FAT_FS 7791da177e4SLinus Torvalds help 7801da177e4SLinus Torvalds This option provides support for normal Windows file systems with 7811da177e4SLinus Torvalds long filenames. That includes non-compressed FAT-based file systems 7821da177e4SLinus Torvalds used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 7831da177e4SLinus Torvalds programs from the mtools package. 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds The VFAT support enlarges your kernel by about 10 KB and it only 7861da177e4SLinus Torvalds works if you said Y to the "DOS FAT fs support" above. Please read 7871da177e4SLinus Torvalds the file <file:Documentation/filesystems/vfat.txt> for details. If 7881da177e4SLinus Torvalds unsure, say Y. 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 7911da177e4SLinus Torvalds vfat. 7921da177e4SLinus Torvalds 7931da177e4SLinus Torvaldsconfig FAT_DEFAULT_CODEPAGE 7941da177e4SLinus Torvalds int "Default codepage for FAT" 7951da177e4SLinus Torvalds depends on MSDOS_FS || VFAT_FS 7961da177e4SLinus Torvalds default 437 7971da177e4SLinus Torvalds help 7981da177e4SLinus Torvalds This option should be set to the codepage of your FAT filesystems. 7991da177e4SLinus Torvalds It can be overridden with the "codepage" mount option. 8001da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvaldsconfig FAT_DEFAULT_IOCHARSET 8031da177e4SLinus Torvalds string "Default iocharset for FAT" 8041da177e4SLinus Torvalds depends on VFAT_FS 8051da177e4SLinus Torvalds default "iso8859-1" 8061da177e4SLinus Torvalds help 8071da177e4SLinus Torvalds Set this to the default input/output character set you'd 8081da177e4SLinus Torvalds like FAT to use. It should probably match the character set 8091da177e4SLinus Torvalds that most of your FAT filesystems use, and can be overridden 8101da177e4SLinus Torvalds with the "iocharset" mount option for FAT filesystems. 8111da177e4SLinus Torvalds Note that "utf8" is not recommended for FAT filesystems. 8121da177e4SLinus Torvalds If unsure, you shouldn't set "utf8" here. 8131da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8141da177e4SLinus Torvalds 8151da177e4SLinus Torvaldsconfig NTFS_FS 8161da177e4SLinus Torvalds tristate "NTFS file system support" 8171da177e4SLinus Torvalds select NLS 8181da177e4SLinus Torvalds help 8191da177e4SLinus Torvalds NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds Saying Y or M here enables read support. There is partial, but 8221da177e4SLinus Torvalds safe, write support available. For write support you must also 8231da177e4SLinus Torvalds say Y to "NTFS write support" below. 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds There are also a number of user-space tools available, called 8261da177e4SLinus Torvalds ntfsprogs. These include ntfsundelete and ntfsresize, that work 8271da177e4SLinus Torvalds without NTFS support enabled in the kernel. 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds This is a rewrite from scratch of Linux NTFS support and replaced 8301da177e4SLinus Torvalds the old NTFS code starting with Linux 2.5.11. A backport to 8311da177e4SLinus Torvalds the Linux 2.4 kernel series is separately available as a patch 8321da177e4SLinus Torvalds from the project web site. 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds For more information see <file:Documentation/filesystems/ntfs.txt> 8351da177e4SLinus Torvalds and <http://linux-ntfs.sourceforge.net/>. 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 8381da177e4SLinus Torvalds module will be called ntfs. 8391da177e4SLinus Torvalds 8401da177e4SLinus Torvalds If you are not using Windows NT, 2000, XP or 2003 in addition to 8411da177e4SLinus Torvalds Linux on your computer it is safe to say N. 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvaldsconfig NTFS_DEBUG 8441da177e4SLinus Torvalds bool "NTFS debugging support" 8451da177e4SLinus Torvalds depends on NTFS_FS 8461da177e4SLinus Torvalds help 8471da177e4SLinus Torvalds If you are experiencing any problems with the NTFS file system, say 8481da177e4SLinus Torvalds Y here. This will result in additional consistency checks to be 8491da177e4SLinus Torvalds performed by the driver as well as additional debugging messages to 8501da177e4SLinus Torvalds be written to the system log. Note that debugging messages are 8511da177e4SLinus Torvalds disabled by default. To enable them, supply the option debug_msgs=1 8521da177e4SLinus Torvalds at the kernel command line when booting the kernel or as an option 8531da177e4SLinus Torvalds to insmod when loading the ntfs module. Once the driver is active, 8541da177e4SLinus Torvalds you can enable debugging messages by doing (as root): 8551da177e4SLinus Torvalds echo 1 > /proc/sys/fs/ntfs-debug 8561da177e4SLinus Torvalds Replacing the "1" with "0" would disable debug messages. 8571da177e4SLinus Torvalds 8581da177e4SLinus Torvalds If you leave debugging messages disabled, this results in little 8591da177e4SLinus Torvalds overhead, but enabling debug messages results in very significant 8601da177e4SLinus Torvalds slowdown of the system. 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds When reporting bugs, please try to have available a full dump of 8631da177e4SLinus Torvalds debugging messages while the misbehaviour was occurring. 8641da177e4SLinus Torvalds 8651da177e4SLinus Torvaldsconfig NTFS_RW 8661da177e4SLinus Torvalds bool "NTFS write support" 8671da177e4SLinus Torvalds depends on NTFS_FS 8681da177e4SLinus Torvalds help 8691da177e4SLinus Torvalds This enables the partial, but safe, write support in the NTFS driver. 8701da177e4SLinus Torvalds 8711da177e4SLinus Torvalds The only supported operation is overwriting existing files, without 8721da177e4SLinus Torvalds changing the file length. No file or directory creation, deletion or 8731da177e4SLinus Torvalds renaming is possible. Note only non-resident files can be written to 8741da177e4SLinus Torvalds so you may find that some very small files (<500 bytes or so) cannot 8751da177e4SLinus Torvalds be written to. 8761da177e4SLinus Torvalds 8771da177e4SLinus Torvalds While we cannot guarantee that it will not damage any data, we have 8781da177e4SLinus Torvalds so far not received a single report where the driver would have 8791da177e4SLinus Torvalds damaged someones data so we assume it is perfectly safe to use. 8801da177e4SLinus Torvalds 8811da177e4SLinus Torvalds Note: While write support is safe in this version (a rewrite from 8821da177e4SLinus Torvalds scratch of the NTFS support), it should be noted that the old NTFS 8831da177e4SLinus Torvalds write support, included in Linux 2.5.10 and before (since 1997), 8841da177e4SLinus Torvalds is not safe. 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds This is currently useful with TopologiLinux. TopologiLinux is run 8871da177e4SLinus Torvalds on top of any DOS/Microsoft Windows system without partitioning your 8881da177e4SLinus Torvalds hard disk. Unlike other Linux distributions TopologiLinux does not 8891da177e4SLinus Torvalds need its own partition. For more information see 8901da177e4SLinus Torvalds <http://topologi-linux.sourceforge.net/> 8911da177e4SLinus Torvalds 8921da177e4SLinus Torvalds It is perfectly safe to say N here. 8931da177e4SLinus Torvalds 8941da177e4SLinus Torvaldsendmenu 8959361401eSDavid Howellsendif 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvaldsmenu "Pseudo filesystems" 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvaldsconfig PROC_FS 90069755652SH. Peter Anvin bool "/proc file system support" if EMBEDDED 90169755652SH. Peter Anvin default y 9021da177e4SLinus Torvalds help 9031da177e4SLinus Torvalds This is a virtual file system providing information about the status 9041da177e4SLinus Torvalds of the system. "Virtual" means that it doesn't take up any space on 9051da177e4SLinus Torvalds your hard disk: the files are created on the fly by the kernel when 9061da177e4SLinus Torvalds you try to access them. Also, you cannot read the files with older 9071da177e4SLinus Torvalds version of the program less: you need to use more or cat. 9081da177e4SLinus Torvalds 9091da177e4SLinus Torvalds It's totally cool; for example, "cat /proc/interrupts" gives 9101da177e4SLinus Torvalds information about what the different IRQs are used for at the moment 9111da177e4SLinus Torvalds (there is a small number of Interrupt ReQuest lines in your computer 9121da177e4SLinus Torvalds that are used by the attached devices to gain the CPU's attention -- 9131da177e4SLinus Torvalds often a source of trouble if two devices are mistakenly configured 9141da177e4SLinus Torvalds to use the same IRQ). The program procinfo to display some 9151da177e4SLinus Torvalds information about your system gathered from the /proc file system. 9161da177e4SLinus Torvalds 9171da177e4SLinus Torvalds Before you can use the /proc file system, it has to be mounted, 9181da177e4SLinus Torvalds meaning it has to be given a location in the directory hierarchy. 9191da177e4SLinus Torvalds That location should be /proc. A command such as "mount -t proc proc 9201da177e4SLinus Torvalds /proc" or the equivalent line in /etc/fstab does the job. 9211da177e4SLinus Torvalds 9221da177e4SLinus Torvalds The /proc file system is explained in the file 9231da177e4SLinus Torvalds <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 9241da177e4SLinus Torvalds ("man 5 proc"). 9251da177e4SLinus Torvalds 9261da177e4SLinus Torvalds This option will enlarge your kernel by about 67 KB. Several 9271da177e4SLinus Torvalds programs depend on this, so everyone should say Y here. 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvaldsconfig PROC_KCORE 9301da177e4SLinus Torvalds bool "/proc/kcore support" if !ARM 9311da177e4SLinus Torvalds depends on PROC_FS && MMU 9321da177e4SLinus Torvalds 933666bfddbSVivek Goyalconfig PROC_VMCORE 934666bfddbSVivek Goyal bool "/proc/vmcore support (EXPERIMENTAL)" 93505970d47SManeesh Soni depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP 93668250ba5SVivek Goyal default y 937666bfddbSVivek Goyal help 938666bfddbSVivek Goyal Exports the dump image of crashed kernel in ELF format. 939666bfddbSVivek Goyal 940b89a8171SEric W. Biedermanconfig PROC_SYSCTL 941b89a8171SEric W. Biederman bool "Sysctl support (/proc/sys)" if EMBEDDED 942b89a8171SEric W. Biederman depends on PROC_FS 943b89a8171SEric W. Biederman select SYSCTL 944b89a8171SEric W. Biederman default y 945b89a8171SEric W. Biederman ---help--- 946b89a8171SEric W. Biederman The sysctl interface provides a means of dynamically changing 947b89a8171SEric W. Biederman certain kernel parameters and variables on the fly without requiring 948b89a8171SEric W. Biederman a recompile of the kernel or reboot of the system. The primary 949b89a8171SEric W. Biederman interface is through /proc/sys. If you say Y here a tree of 950b89a8171SEric W. Biederman modifiable sysctl entries will be generated beneath the 951b89a8171SEric W. Biederman /proc/sys directory. They are explained in the files 952b89a8171SEric W. Biederman in <file:Documentation/sysctl/>. Note that enabling this 953b89a8171SEric W. Biederman option will enlarge the kernel by at least 8 KB. 954b89a8171SEric W. Biederman 955b89a8171SEric W. Biederman As it is generally a good thing, you should say Y here unless 956b89a8171SEric W. Biederman building a kernel for install/rescue disks or your system is very 957b89a8171SEric W. Biederman limited in memory. 958b89a8171SEric W. Biederman 9591da177e4SLinus Torvaldsconfig SYSFS 9601da177e4SLinus Torvalds bool "sysfs file system support" if EMBEDDED 9611da177e4SLinus Torvalds default y 9621da177e4SLinus Torvalds help 9631da177e4SLinus Torvalds The sysfs filesystem is a virtual filesystem that the kernel uses to 9641da177e4SLinus Torvalds export internal kernel objects, their attributes, and their 9651da177e4SLinus Torvalds relationships to one another. 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds Users can use sysfs to ascertain useful information about the running 9681da177e4SLinus Torvalds kernel, such as the devices the kernel has discovered on each bus and 9691da177e4SLinus Torvalds which driver each is bound to. sysfs can also be used to tune devices 9701da177e4SLinus Torvalds and other kernel subsystems. 9711da177e4SLinus Torvalds 9721da177e4SLinus Torvalds Some system agents rely on the information in sysfs to operate. 9731da177e4SLinus Torvalds /sbin/hotplug uses device and object attributes in sysfs to assist in 97403a67a46SJan Engelhardt delegating policy decisions, like persistently naming devices. 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds sysfs is currently used by the block subsystem to mount the root 9771da177e4SLinus Torvalds partition. If sysfs is disabled you must specify the boot device on 9781da177e4SLinus Torvalds the kernel boot command line via its major and minor numbers. For 9791da177e4SLinus Torvalds example, "root=03:01" for /dev/hda1. 9801da177e4SLinus Torvalds 9811da177e4SLinus Torvalds Designers of embedded systems may wish to say N here to conserve space. 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvaldsconfig TMPFS 9841da177e4SLinus Torvalds bool "Virtual memory file system support (former shm fs)" 9851da177e4SLinus Torvalds help 9861da177e4SLinus Torvalds Tmpfs is a file system which keeps all files in virtual memory. 9871da177e4SLinus Torvalds 9881da177e4SLinus Torvalds Everything in tmpfs is temporary in the sense that no files will be 9891da177e4SLinus Torvalds created on your hard drive. The files live in memory and swap 9901da177e4SLinus Torvalds space. If you unmount a tmpfs instance, everything stored therein is 9911da177e4SLinus Torvalds lost. 9921da177e4SLinus Torvalds 9931da177e4SLinus Torvalds See <file:Documentation/filesystems/tmpfs.txt> for details. 9941da177e4SLinus Torvalds 99539f0247dSAndreas Gruenbacherconfig TMPFS_POSIX_ACL 99639f0247dSAndreas Gruenbacher bool "Tmpfs POSIX Access Control Lists" 99739f0247dSAndreas Gruenbacher depends on TMPFS 99839f0247dSAndreas Gruenbacher select GENERIC_ACL 99939f0247dSAndreas Gruenbacher help 100039f0247dSAndreas Gruenbacher POSIX Access Control Lists (ACLs) support permissions for users and 100139f0247dSAndreas Gruenbacher groups beyond the owner/group/world scheme. 100239f0247dSAndreas Gruenbacher 100339f0247dSAndreas Gruenbacher To learn more about Access Control Lists, visit the POSIX ACLs for 100439f0247dSAndreas Gruenbacher Linux website <http://acl.bestbits.at/>. 100539f0247dSAndreas Gruenbacher 100639f0247dSAndreas Gruenbacher If you don't know what Access Control Lists are, say N. 100739f0247dSAndreas Gruenbacher 10081da177e4SLinus Torvaldsconfig HUGETLBFS 10091da177e4SLinus Torvalds bool "HugeTLB file system support" 1010dd950587SPaul Mundt depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN 1011dda27d1aSArthur Othieno help 1012dda27d1aSArthur Othieno hugetlbfs is a filesystem backing for HugeTLB pages, based on 1013dda27d1aSArthur Othieno ramfs. For architectures that support it, say Y here and read 1014dda27d1aSArthur Othieno <file:Documentation/vm/hugetlbpage.txt> for details. 1015dda27d1aSArthur Othieno 1016dda27d1aSArthur Othieno If unsure, say N. 10171da177e4SLinus Torvalds 10181da177e4SLinus Torvaldsconfig HUGETLB_PAGE 10191da177e4SLinus Torvalds def_bool HUGETLBFS 10201da177e4SLinus Torvalds 10217063fbf2SJoel Beckerconfig CONFIGFS_FS 10227063fbf2SJoel Becker tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)" 102365714b91SAdrian Bunk depends on SYSFS && EXPERIMENTAL 10247063fbf2SJoel Becker help 10257063fbf2SJoel Becker configfs is a ram-based filesystem that provides the converse 10267063fbf2SJoel Becker of sysfs's functionality. Where sysfs is a filesystem-based 10277063fbf2SJoel Becker view of kernel objects, configfs is a filesystem-based manager 10287063fbf2SJoel Becker of kernel objects, or config_items. 10297063fbf2SJoel Becker 10307063fbf2SJoel Becker Both sysfs and configfs can and should exist together on the 10317063fbf2SJoel Becker same system. One is not a replacement for the other. 10327063fbf2SJoel Becker 10331da177e4SLinus Torvaldsendmenu 10341da177e4SLinus Torvalds 10351da177e4SLinus Torvaldsmenu "Miscellaneous filesystems" 10361da177e4SLinus Torvalds 10371da177e4SLinus Torvaldsconfig ADFS_FS 10381da177e4SLinus Torvalds tristate "ADFS file system support (EXPERIMENTAL)" 10399361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10401da177e4SLinus Torvalds help 10411da177e4SLinus Torvalds The Acorn Disc Filing System is the standard file system of the 10421da177e4SLinus Torvalds RiscOS operating system which runs on Acorn's ARM-based Risc PC 10431da177e4SLinus Torvalds systems and the Acorn Archimedes range of machines. If you say Y 10441da177e4SLinus Torvalds here, Linux will be able to read from ADFS partitions on hard drives 10451da177e4SLinus Torvalds and from ADFS-formatted floppy discs. If you also want to be able to 10461da177e4SLinus Torvalds write to those devices, say Y to "ADFS write support" below. 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds The ADFS partition should be the first partition (i.e., 10491da177e4SLinus Torvalds /dev/[hs]d?1) on each of your drives. Please read the file 10501da177e4SLinus Torvalds <file:Documentation/filesystems/adfs.txt> for further details. 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds To compile this code as a module, choose M here: the module will be 10531da177e4SLinus Torvalds called adfs. 10541da177e4SLinus Torvalds 10551da177e4SLinus Torvalds If unsure, say N. 10561da177e4SLinus Torvalds 10571da177e4SLinus Torvaldsconfig ADFS_FS_RW 10581da177e4SLinus Torvalds bool "ADFS write support (DANGEROUS)" 10591da177e4SLinus Torvalds depends on ADFS_FS 10601da177e4SLinus Torvalds help 10611da177e4SLinus Torvalds If you say Y here, you will be able to write to ADFS partitions on 10621da177e4SLinus Torvalds hard drives and ADFS-formatted floppy disks. This is experimental 10631da177e4SLinus Torvalds codes, so if you're unsure, say N. 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvaldsconfig AFFS_FS 10661da177e4SLinus Torvalds tristate "Amiga FFS file system support (EXPERIMENTAL)" 10679361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10681da177e4SLinus Torvalds help 10691da177e4SLinus Torvalds The Fast File System (FFS) is the common file system used on hard 10701da177e4SLinus Torvalds disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 10711da177e4SLinus Torvalds if you want to be able to read and write files from and to an Amiga 10721da177e4SLinus Torvalds FFS partition on your hard drive. Amiga floppies however cannot be 10731da177e4SLinus Torvalds read with this driver due to an incompatibility of the floppy 10741da177e4SLinus Torvalds controller used in an Amiga and the standard floppy controller in 10751da177e4SLinus Torvalds PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 10761da177e4SLinus Torvalds and <file:fs/affs/Changes>. 10771da177e4SLinus Torvalds 10781da177e4SLinus Torvalds With this driver you can also mount disk files used by Bernd 10791da177e4SLinus Torvalds Schmidt's Un*X Amiga Emulator 10801da177e4SLinus Torvalds (<http://www.freiburg.linux.de/~uae/>). 10811da177e4SLinus Torvalds If you want to do this, you will also need to say Y or M to "Loop 10821da177e4SLinus Torvalds device support", above. 10831da177e4SLinus Torvalds 10841da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 10851da177e4SLinus Torvalds module will be called affs. If unsure, say N. 10861da177e4SLinus Torvalds 1087237fead6SMichael Halcrowconfig ECRYPT_FS 1088237fead6SMichael Halcrow tristate "eCrypt filesystem layer support (EXPERIMENTAL)" 108988b4a07eSMichael Halcrow depends on EXPERIMENTAL && KEYS && CRYPTO && NET 1090237fead6SMichael Halcrow help 1091237fead6SMichael Halcrow Encrypted filesystem that operates on the VFS layer. See 1092237fead6SMichael Halcrow <file:Documentation/ecryptfs.txt> to learn more about 1093237fead6SMichael Halcrow eCryptfs. Userspace components are required and can be 1094237fead6SMichael Halcrow obtained from <http://ecryptfs.sf.net>. 1095237fead6SMichael Halcrow 1096237fead6SMichael Halcrow To compile this file system support as a module, choose M here: the 1097237fead6SMichael Halcrow module will be called ecryptfs. 1098237fead6SMichael Halcrow 10991da177e4SLinus Torvaldsconfig HFS_FS 11001da177e4SLinus Torvalds tristate "Apple Macintosh file system support (EXPERIMENTAL)" 11019361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 1102878129a3SLennert Buytenhek select NLS 11031da177e4SLinus Torvalds help 11041da177e4SLinus Torvalds If you say Y here, you will be able to mount Macintosh-formatted 11051da177e4SLinus Torvalds floppy disks and hard drive partitions with full read-write access. 11061da177e4SLinus Torvalds Please read <file:fs/hfs/HFS.txt> to learn about the available mount 11071da177e4SLinus Torvalds options. 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 11101da177e4SLinus Torvalds module will be called hfs. 11111da177e4SLinus Torvalds 11121da177e4SLinus Torvaldsconfig HFSPLUS_FS 11131da177e4SLinus Torvalds tristate "Apple Extended HFS file system support" 11149361401eSDavid Howells depends on BLOCK 11151da177e4SLinus Torvalds select NLS 11161da177e4SLinus Torvalds select NLS_UTF8 11171da177e4SLinus Torvalds help 11181da177e4SLinus Torvalds If you say Y here, you will be able to mount extended format 11191da177e4SLinus Torvalds Macintosh-formatted hard drive partitions with full read-write access. 11201da177e4SLinus Torvalds 11211da177e4SLinus Torvalds This file system is often called HFS+ and was introduced with 11221da177e4SLinus Torvalds MacOS 8. It includes all Mac specific filesystem data such as 11231da177e4SLinus Torvalds data forks and creator codes, but it also has several UNIX 11241da177e4SLinus Torvalds style features such as file ownership and permissions. 11251da177e4SLinus Torvalds 11261da177e4SLinus Torvaldsconfig BEFS_FS 11271da177e4SLinus Torvalds tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 11289361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11291da177e4SLinus Torvalds select NLS 11301da177e4SLinus Torvalds help 11311da177e4SLinus Torvalds The BeOS File System (BeFS) is the native file system of Be, Inc's 11321da177e4SLinus Torvalds BeOS. Notable features include support for arbitrary attributes 11333cb2fcccSMatt LaPlante on files and directories, and database-like indices on selected 11341da177e4SLinus Torvalds attributes. (Also note that this driver doesn't make those features 11351da177e4SLinus Torvalds available at this time). It is a 64 bit filesystem, so it supports 113644c09201SMatt LaPlante extremely large volumes and files. 11371da177e4SLinus Torvalds 11381da177e4SLinus Torvalds If you use this filesystem, you should also say Y to at least one 11391da177e4SLinus Torvalds of the NLS (native language support) options below. 11401da177e4SLinus Torvalds 11411da177e4SLinus Torvalds If you don't know what this is about, say N. 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 11441da177e4SLinus Torvalds called befs. 11451da177e4SLinus Torvalds 11461da177e4SLinus Torvaldsconfig BEFS_DEBUG 11471da177e4SLinus Torvalds bool "Debug BeFS" 11481da177e4SLinus Torvalds depends on BEFS_FS 11491da177e4SLinus Torvalds help 11501da177e4SLinus Torvalds If you say Y here, you can use the 'debug' mount option to enable 11511da177e4SLinus Torvalds debugging output from the driver. 11521da177e4SLinus Torvalds 11531da177e4SLinus Torvaldsconfig BFS_FS 11541da177e4SLinus Torvalds tristate "BFS file system support (EXPERIMENTAL)" 11559361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11561da177e4SLinus Torvalds help 11571da177e4SLinus Torvalds Boot File System (BFS) is a file system used under SCO UnixWare to 11581da177e4SLinus Torvalds allow the bootloader access to the kernel image and other important 11591da177e4SLinus Torvalds files during the boot process. It is usually mounted under /stand 11601da177e4SLinus Torvalds and corresponds to the slice marked as "STAND" in the UnixWare 11611da177e4SLinus Torvalds partition. You should say Y if you want to read or write the files 11621da177e4SLinus Torvalds on your /stand slice from within Linux. You then also need to say Y 11631da177e4SLinus Torvalds to "UnixWare slices support", below. More information about the BFS 11641da177e4SLinus Torvalds file system is contained in the file 11651da177e4SLinus Torvalds <file:Documentation/filesystems/bfs.txt>. 11661da177e4SLinus Torvalds 11671da177e4SLinus Torvalds If you don't know what this is about, say N. 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 11701da177e4SLinus Torvalds bfs. Note that the file system of your root partition (the one 11711da177e4SLinus Torvalds containing the directory /) cannot be compiled as a module. 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvaldsconfig EFS_FS 11761da177e4SLinus Torvalds tristate "EFS file system support (read only) (EXPERIMENTAL)" 11779361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11781da177e4SLinus Torvalds help 11791da177e4SLinus Torvalds EFS is an older file system used for non-ISO9660 CD-ROMs and hard 11801da177e4SLinus Torvalds disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 11811da177e4SLinus Torvalds uses the XFS file system for hard disk partitions however). 11821da177e4SLinus Torvalds 11831da177e4SLinus Torvalds This implementation only offers read-only access. If you don't know 11841da177e4SLinus Torvalds what all this is about, it's safe to say N. For more information 11851da177e4SLinus Torvalds about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds To compile the EFS file system support as a module, choose M here: the 11881da177e4SLinus Torvalds module will be called efs. 11891da177e4SLinus Torvalds 11901da177e4SLinus Torvaldsconfig JFFS2_FS 11911da177e4SLinus Torvalds tristate "Journalling Flash File System v2 (JFFS2) support" 11921da177e4SLinus Torvalds select CRC32 11931da177e4SLinus Torvalds depends on MTD 11941da177e4SLinus Torvalds help 11951da177e4SLinus Torvalds JFFS2 is the second generation of the Journalling Flash File System 11961da177e4SLinus Torvalds for use on diskless embedded devices. It provides improved wear 11971da177e4SLinus Torvalds levelling, compression and support for hard links. You cannot use 11981da177e4SLinus Torvalds this on normal block devices, only on 'MTD' devices. 11991da177e4SLinus Torvalds 12001da177e4SLinus Torvalds Further information on the design and implementation of JFFS2 is 12011da177e4SLinus Torvalds available at <http://sources.redhat.com/jffs2/>. 12021da177e4SLinus Torvalds 12031da177e4SLinus Torvaldsconfig JFFS2_FS_DEBUG 12041da177e4SLinus Torvalds int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 12051da177e4SLinus Torvalds depends on JFFS2_FS 12061da177e4SLinus Torvalds default "0" 12071da177e4SLinus Torvalds help 12081da177e4SLinus Torvalds This controls the amount of debugging messages produced by the JFFS2 12091da177e4SLinus Torvalds code. Set it to zero for use in production systems. For evaluation, 12101da177e4SLinus Torvalds testing and debugging, it's advisable to set it to one. This will 12111da177e4SLinus Torvalds enable a few assertions and will print debugging messages at the 12121da177e4SLinus Torvalds KERN_DEBUG loglevel, where they won't normally be visible. Level 2 12131da177e4SLinus Torvalds is unlikely to be useful - it enables extra debugging in certain 12141da177e4SLinus Torvalds areas which at one point needed debugging, but when the bugs were 12151da177e4SLinus Torvalds located and fixed, the detailed messages were relegated to level 2. 12161da177e4SLinus Torvalds 12171da177e4SLinus Torvalds If reporting bugs, please try to have available a full dump of the 12181da177e4SLinus Torvalds messages at debug level 1 while the misbehaviour was occurring. 12191da177e4SLinus Torvalds 12202ba72cb7SDavid Woodhouseconfig JFFS2_FS_WRITEBUFFER 12212ba72cb7SDavid Woodhouse bool "JFFS2 write-buffering support" 1222aa98d7cfSKaiGai Kohei depends on JFFS2_FS 12232ba72cb7SDavid Woodhouse default y 12242ba72cb7SDavid Woodhouse help 12252ba72cb7SDavid Woodhouse This enables the write-buffering support in JFFS2. 12262ba72cb7SDavid Woodhouse 12272ba72cb7SDavid Woodhouse This functionality is required to support JFFS2 on the following 12282ba72cb7SDavid Woodhouse types of flash devices: 12292ba72cb7SDavid Woodhouse - NAND flash 12302ba72cb7SDavid Woodhouse - NOR flash with transparent ECC 12312ba72cb7SDavid Woodhouse - DataFlash 12322ba72cb7SDavid Woodhouse 1233a6bc432eSDavid Woodhouseconfig JFFS2_FS_WBUF_VERIFY 1234a6bc432eSDavid Woodhouse bool "Verify JFFS2 write-buffer reads" 1235a6bc432eSDavid Woodhouse depends on JFFS2_FS_WRITEBUFFER 1236a6bc432eSDavid Woodhouse default n 1237a6bc432eSDavid Woodhouse help 1238a6bc432eSDavid Woodhouse This causes JFFS2 to read back every page written through the 1239a6bc432eSDavid Woodhouse write-buffer, and check for errors. 1240a6bc432eSDavid Woodhouse 12412ba72cb7SDavid Woodhouseconfig JFFS2_SUMMARY 12422ba72cb7SDavid Woodhouse bool "JFFS2 summary support (EXPERIMENTAL)" 12432ba72cb7SDavid Woodhouse depends on JFFS2_FS && EXPERIMENTAL 12442ba72cb7SDavid Woodhouse default n 12452ba72cb7SDavid Woodhouse help 12462ba72cb7SDavid Woodhouse This feature makes it possible to use summary information 12472ba72cb7SDavid Woodhouse for faster filesystem mount. 12482ba72cb7SDavid Woodhouse 12492ba72cb7SDavid Woodhouse The summary information can be inserted into a filesystem image 12502ba72cb7SDavid Woodhouse by the utility 'sumtool'. 12512ba72cb7SDavid Woodhouse 12522ba72cb7SDavid Woodhouse If unsure, say 'N'. 12532ba72cb7SDavid Woodhouse 12542ba72cb7SDavid Woodhouseconfig JFFS2_FS_XATTR 12552ba72cb7SDavid Woodhouse bool "JFFS2 XATTR support (EXPERIMENTAL)" 125604510deeSKaiGai Kohei depends on JFFS2_FS && EXPERIMENTAL 1257aa98d7cfSKaiGai Kohei default n 1258aa98d7cfSKaiGai Kohei help 1259aa98d7cfSKaiGai Kohei Extended attributes are name:value pairs associated with inodes by 1260aa98d7cfSKaiGai Kohei the kernel or by users (see the attr(5) manual page, or visit 1261aa98d7cfSKaiGai Kohei <http://acl.bestbits.at/> for details). 1262aa98d7cfSKaiGai Kohei 1263aa98d7cfSKaiGai Kohei If unsure, say N. 1264aa98d7cfSKaiGai Kohei 1265aa98d7cfSKaiGai Koheiconfig JFFS2_FS_POSIX_ACL 1266aa98d7cfSKaiGai Kohei bool "JFFS2 POSIX Access Control Lists" 1267aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1268aa98d7cfSKaiGai Kohei default y 1269aa98d7cfSKaiGai Kohei select FS_POSIX_ACL 1270aa98d7cfSKaiGai Kohei help 1271aa98d7cfSKaiGai Kohei Posix Access Control Lists (ACLs) support permissions for users and 1272aa98d7cfSKaiGai Kohei groups beyond the owner/group/world scheme. 1273aa98d7cfSKaiGai Kohei 1274aa98d7cfSKaiGai Kohei To learn more about Access Control Lists, visit the Posix ACLs for 1275aa98d7cfSKaiGai Kohei Linux website <http://acl.bestbits.at/>. 1276aa98d7cfSKaiGai Kohei 1277aa98d7cfSKaiGai Kohei If you don't know what Access Control Lists are, say N 1278aa98d7cfSKaiGai Kohei 1279aa98d7cfSKaiGai Koheiconfig JFFS2_FS_SECURITY 1280aa98d7cfSKaiGai Kohei bool "JFFS2 Security Labels" 1281aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1282aa98d7cfSKaiGai Kohei default y 1283aa98d7cfSKaiGai Kohei help 1284aa98d7cfSKaiGai Kohei Security labels support alternative access control models 1285aa98d7cfSKaiGai Kohei implemented by security modules like SELinux. This option 1286aa98d7cfSKaiGai Kohei enables an extended attribute handler for file security 1287aa98d7cfSKaiGai Kohei labels in the jffs2 filesystem. 1288aa98d7cfSKaiGai Kohei 1289aa98d7cfSKaiGai Kohei If you are not using a security module that requires using 1290aa98d7cfSKaiGai Kohei extended attributes for file security labels, say N. 1291aa98d7cfSKaiGai Kohei 12921da177e4SLinus Torvaldsconfig JFFS2_COMPRESSION_OPTIONS 12931da177e4SLinus Torvalds bool "Advanced compression options for JFFS2" 12941da177e4SLinus Torvalds depends on JFFS2_FS 12951da177e4SLinus Torvalds default n 12961da177e4SLinus Torvalds help 12971da177e4SLinus Torvalds Enabling this option allows you to explicitly choose which 12981da177e4SLinus Torvalds compression modules, if any, are enabled in JFFS2. Removing 12991da177e4SLinus Torvalds compressors and mean you cannot read existing file systems, 13001da177e4SLinus Torvalds and enabling experimental compressors can mean that you 13011da177e4SLinus Torvalds write a file system which cannot be read by a standard kernel. 13021da177e4SLinus Torvalds 13031da177e4SLinus Torvalds If unsure, you should _definitely_ say 'N'. 13041da177e4SLinus Torvalds 13051da177e4SLinus Torvaldsconfig JFFS2_ZLIB 13061da177e4SLinus Torvalds bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 13071da177e4SLinus Torvalds select ZLIB_INFLATE 13081da177e4SLinus Torvalds select ZLIB_DEFLATE 13091da177e4SLinus Torvalds depends on JFFS2_FS 13101da177e4SLinus Torvalds default y 13111da177e4SLinus Torvalds help 13121da177e4SLinus Torvalds Zlib is designed to be a free, general-purpose, legally unencumbered, 13131da177e4SLinus Torvalds lossless data-compression library for use on virtually any computer 13141da177e4SLinus Torvalds hardware and operating system. See <http://www.gzip.org/zlib/> for 13151da177e4SLinus Torvalds further information. 13161da177e4SLinus Torvalds 13171da177e4SLinus Torvalds Say 'Y' if unsure. 13181da177e4SLinus Torvalds 1319c799aca3SRichard Purdieconfig JFFS2_LZO 1320c799aca3SRichard Purdie bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS 1321c799aca3SRichard Purdie select LZO_COMPRESS 1322c799aca3SRichard Purdie select LZO_DECOMPRESS 1323c799aca3SRichard Purdie depends on JFFS2_FS 13243ca135e1SDavid Woodhouse default n 1325c799aca3SRichard Purdie help 1326c799aca3SRichard Purdie minilzo-based compression. Generally works better than Zlib. 1327c799aca3SRichard Purdie 13283ca135e1SDavid Woodhouse This feature was added in July, 2007. Say 'N' if you need 13293ca135e1SDavid Woodhouse compatibility with older bootloaders or kernels. 1330c799aca3SRichard Purdie 13311da177e4SLinus Torvaldsconfig JFFS2_RTIME 13321da177e4SLinus Torvalds bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 13331da177e4SLinus Torvalds depends on JFFS2_FS 13341da177e4SLinus Torvalds default y 13351da177e4SLinus Torvalds help 13361da177e4SLinus Torvalds Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 13371da177e4SLinus Torvalds 13381da177e4SLinus Torvaldsconfig JFFS2_RUBIN 13391da177e4SLinus Torvalds bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 13401da177e4SLinus Torvalds depends on JFFS2_FS 13411da177e4SLinus Torvalds default n 13421da177e4SLinus Torvalds help 13431da177e4SLinus Torvalds RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 13441da177e4SLinus Torvalds 13451da177e4SLinus Torvaldschoice 13461da177e4SLinus Torvalds prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 13471da177e4SLinus Torvalds default JFFS2_CMODE_PRIORITY 13481da177e4SLinus Torvalds depends on JFFS2_FS 13491da177e4SLinus Torvalds help 13501da177e4SLinus Torvalds You can set here the default compression mode of JFFS2 from 13511da177e4SLinus Torvalds the available compression modes. Don't touch if unsure. 13521da177e4SLinus Torvalds 13531da177e4SLinus Torvaldsconfig JFFS2_CMODE_NONE 13541da177e4SLinus Torvalds bool "no compression" 13551da177e4SLinus Torvalds help 13561da177e4SLinus Torvalds Uses no compression. 13571da177e4SLinus Torvalds 13581da177e4SLinus Torvaldsconfig JFFS2_CMODE_PRIORITY 13591da177e4SLinus Torvalds bool "priority" 13601da177e4SLinus Torvalds help 1361cc2e2767SMatt LaPlante Tries the compressors in a predefined order and chooses the first 13621da177e4SLinus Torvalds successful one. 13631da177e4SLinus Torvalds 13641da177e4SLinus Torvaldsconfig JFFS2_CMODE_SIZE 13651da177e4SLinus Torvalds bool "size (EXPERIMENTAL)" 13661da177e4SLinus Torvalds help 13671da177e4SLinus Torvalds Tries all compressors and chooses the one which has the smallest 13681da177e4SLinus Torvalds result. 13691da177e4SLinus Torvalds 13703b23c1f5SRichard Purdieconfig JFFS2_CMODE_FAVOURLZO 13713b23c1f5SRichard Purdie bool "Favour LZO" 13723b23c1f5SRichard Purdie help 13733b23c1f5SRichard Purdie Tries all compressors and chooses the one which has the smallest 13743b23c1f5SRichard Purdie result but gives some preference to LZO (which has faster 13753b23c1f5SRichard Purdie decompression) at the expense of size. 13763b23c1f5SRichard Purdie 13771da177e4SLinus Torvaldsendchoice 13781da177e4SLinus Torvalds 13791da177e4SLinus Torvaldsconfig CRAMFS 13801da177e4SLinus Torvalds tristate "Compressed ROM file system support (cramfs)" 13819361401eSDavid Howells depends on BLOCK 13821da177e4SLinus Torvalds select ZLIB_INFLATE 13831da177e4SLinus Torvalds help 13841da177e4SLinus Torvalds Saying Y here includes support for CramFs (Compressed ROM File 13851da177e4SLinus Torvalds System). CramFs is designed to be a simple, small, and compressed 13861da177e4SLinus Torvalds file system for ROM based embedded systems. CramFs is read-only, 13871da177e4SLinus Torvalds limited to 256MB file systems (with 16MB files), and doesn't support 13881da177e4SLinus Torvalds 16/32 bits uid/gid, hard links and timestamps. 13891da177e4SLinus Torvalds 13901da177e4SLinus Torvalds See <file:Documentation/filesystems/cramfs.txt> and 13911da177e4SLinus Torvalds <file:fs/cramfs/README> for further information. 13921da177e4SLinus Torvalds 13931da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 13941da177e4SLinus Torvalds cramfs. Note that the root file system (the one containing the 13951da177e4SLinus Torvalds directory /) cannot be compiled as a module. 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds If unsure, say N. 13981da177e4SLinus Torvalds 13991da177e4SLinus Torvaldsconfig VXFS_FS 14001da177e4SLinus Torvalds tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 14019361401eSDavid Howells depends on BLOCK 14021da177e4SLinus Torvalds help 14031da177e4SLinus Torvalds FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 14041da177e4SLinus Torvalds file system format. VERITAS VxFS(TM) is the standard file system 14051da177e4SLinus Torvalds of SCO UnixWare (and possibly others) and optionally available 14061da177e4SLinus Torvalds for Sunsoft Solaris, HP-UX and many other operating systems. 14071da177e4SLinus Torvalds Currently only readonly access is supported. 14081da177e4SLinus Torvalds 14091da177e4SLinus Torvalds NOTE: the file system type as used by mount(1), mount(2) and 14101da177e4SLinus Torvalds fstab(5) is 'vxfs' as it describes the file system format, not 14111da177e4SLinus Torvalds the actual driver. 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 14141da177e4SLinus Torvalds called freevxfs. If unsure, say N. 14151da177e4SLinus Torvalds 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvaldsconfig HPFS_FS 14181da177e4SLinus Torvalds tristate "OS/2 HPFS file system support" 14199361401eSDavid Howells depends on BLOCK 14201da177e4SLinus Torvalds help 14211da177e4SLinus Torvalds OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 14221da177e4SLinus Torvalds is the file system used for organizing files on OS/2 hard disk 14231da177e4SLinus Torvalds partitions. Say Y if you want to be able to read files from and 14241da177e4SLinus Torvalds write files to an OS/2 HPFS partition on your hard drive. OS/2 14251da177e4SLinus Torvalds floppies however are in regular MSDOS format, so you don't need this 14261da177e4SLinus Torvalds option in order to be able to read them. Read 14271da177e4SLinus Torvalds <file:Documentation/filesystems/hpfs.txt>. 14281da177e4SLinus Torvalds 14291da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14301da177e4SLinus Torvalds module will be called hpfs. If unsure, say N. 14311da177e4SLinus Torvalds 14321da177e4SLinus Torvalds 14331da177e4SLinus Torvalds 14341da177e4SLinus Torvaldsconfig QNX4FS_FS 14351da177e4SLinus Torvalds tristate "QNX4 file system support (read only)" 14369361401eSDavid Howells depends on BLOCK 14371da177e4SLinus Torvalds help 14381da177e4SLinus Torvalds This is the file system used by the real-time operating systems 14391da177e4SLinus Torvalds QNX 4 and QNX 6 (the latter is also called QNX RTP). 14401da177e4SLinus Torvalds Further information is available at <http://www.qnx.com/>. 14411da177e4SLinus Torvalds Say Y if you intend to mount QNX hard disks or floppies. 14421da177e4SLinus Torvalds Unless you say Y to "QNX4FS read-write support" below, you will 14431da177e4SLinus Torvalds only be able to read these file systems. 14441da177e4SLinus Torvalds 14451da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14461da177e4SLinus Torvalds module will be called qnx4. 14471da177e4SLinus Torvalds 14481da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 14491da177e4SLinus Torvalds answer N. 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvaldsconfig QNX4FS_RW 14521da177e4SLinus Torvalds bool "QNX4FS write support (DANGEROUS)" 14531da177e4SLinus Torvalds depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 14541da177e4SLinus Torvalds help 14551da177e4SLinus Torvalds Say Y if you want to test write support for QNX4 file systems. 14561da177e4SLinus Torvalds 14571da177e4SLinus Torvalds It's currently broken, so for now: 14581da177e4SLinus Torvalds answer N. 14591da177e4SLinus Torvalds 14601da177e4SLinus Torvalds 14611da177e4SLinus Torvalds 14621da177e4SLinus Torvaldsconfig SYSV_FS 14631da177e4SLinus Torvalds tristate "System V/Xenix/V7/Coherent file system support" 14649361401eSDavid Howells depends on BLOCK 14651da177e4SLinus Torvalds help 14661da177e4SLinus Torvalds SCO, Xenix and Coherent are commercial Unix systems for Intel 14671da177e4SLinus Torvalds machines, and Version 7 was used on the DEC PDP-11. Saying Y 14681da177e4SLinus Torvalds here would allow you to read from their floppies and hard disk 14691da177e4SLinus Torvalds partitions. 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvalds If you have floppies or hard disk partitions like that, it is likely 14721da177e4SLinus Torvalds that they contain binaries from those other Unix systems; in order 1473cab00891SMatt LaPlante to run these binaries, you will want to install linux-abi which is 14741da177e4SLinus Torvalds a set of kernel modules that lets you run SCO, Xenix, Wyse, 14751da177e4SLinus Torvalds UnixWare, Dell Unix and System V programs under Linux. It is 14761da177e4SLinus Torvalds available via FTP (user: ftp) from 14771da177e4SLinus Torvalds <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 14781da177e4SLinus Torvalds NOTE: that will work only for binaries from Intel-based systems; 14791da177e4SLinus Torvalds PDP ones will have to wait until somebody ports Linux to -11 ;-) 14801da177e4SLinus Torvalds 14811da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 14821da177e4SLinus Torvalds network using NFS, you don't need the System V file system support 14831da177e4SLinus Torvalds (but you need NFS file system support obviously). 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 14861da177e4SLinus Torvalds good portable way to transport files and directories between unixes 14871da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 14881da177e4SLinus Torvalds tar" or preferably "info tar"). Note also that this option has 14891da177e4SLinus Torvalds nothing whatsoever to do with the option "System V IPC". Read about 14901da177e4SLinus Torvalds the System V file system in 14911da177e4SLinus Torvalds <file:Documentation/filesystems/sysv-fs.txt>. 14921da177e4SLinus Torvalds Saying Y here will enlarge your kernel by about 27 KB. 14931da177e4SLinus Torvalds 14941da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 14951da177e4SLinus Torvalds sysv. 14961da177e4SLinus Torvalds 14971da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvalds 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvaldsconfig UFS_FS 15021da177e4SLinus Torvalds tristate "UFS file system support (read only)" 15039361401eSDavid Howells depends on BLOCK 15041da177e4SLinus Torvalds help 15051da177e4SLinus Torvalds BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 15061da177e4SLinus Torvalds OpenBSD and NeXTstep) use a file system called UFS. Some System V 15071da177e4SLinus Torvalds Unixes can create and mount hard disk partitions and diskettes using 15081da177e4SLinus Torvalds this file system as well. Saying Y here will allow you to read from 15091da177e4SLinus Torvalds these partitions; if you also want to write to them, say Y to the 15101da177e4SLinus Torvalds experimental "UFS file system write support", below. Please read the 15111da177e4SLinus Torvalds file <file:Documentation/filesystems/ufs.txt> for more information. 15121da177e4SLinus Torvalds 15131da177e4SLinus Torvalds The recently released UFS2 variant (used in FreeBSD 5.x) is 15141da177e4SLinus Torvalds READ-ONLY supported. 15151da177e4SLinus Torvalds 15161da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 15171da177e4SLinus Torvalds network using NFS, you don't need the UFS file system support (but 15181da177e4SLinus Torvalds you need NFS file system support obviously). 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 15211da177e4SLinus Torvalds good portable way to transport files and directories between unixes 15221da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 15231da177e4SLinus Torvalds tar" or preferably "info tar"). 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvalds When accessing NeXTstep files, you may need to convert them from the 15261da177e4SLinus Torvalds NeXT character set to the Latin1 character set; use the program 15271da177e4SLinus Torvalds recode ("info recode") for this purpose. 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds To compile the UFS file system support as a module, choose M here: the 15301da177e4SLinus Torvalds module will be called ufs. 15311da177e4SLinus Torvalds 15321da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15331da177e4SLinus Torvalds 15341da177e4SLinus Torvaldsconfig UFS_FS_WRITE 15351da177e4SLinus Torvalds bool "UFS file system write support (DANGEROUS)" 15365afb3145SEvgeniy Dushistov depends on UFS_FS && EXPERIMENTAL 15371da177e4SLinus Torvalds help 15381da177e4SLinus Torvalds Say Y here if you want to try writing to UFS partitions. This is 15391da177e4SLinus Torvalds experimental, so you should back up your UFS partitions beforehand. 15401da177e4SLinus Torvalds 1541abf5d15fSEvgeniy Dushistovconfig UFS_DEBUG 1542abf5d15fSEvgeniy Dushistov bool "UFS debugging" 1543abf5d15fSEvgeniy Dushistov depends on UFS_FS 1544abf5d15fSEvgeniy Dushistov help 1545abf5d15fSEvgeniy Dushistov If you are experiencing any problems with the UFS filesystem, say 1546abf5d15fSEvgeniy Dushistov Y here. This will result in _many_ additional debugging messages to be 1547abf5d15fSEvgeniy Dushistov written to the system log. 1548abf5d15fSEvgeniy Dushistov 15491da177e4SLinus Torvaldsendmenu 15501da177e4SLinus Torvalds 1551ea0985adSJan Engelhardtmenuconfig NETWORK_FILESYSTEMS 1552ea0985adSJan Engelhardt bool "Network File Systems" 1553ea0985adSJan Engelhardt default y 15541da177e4SLinus Torvalds depends on NET 1555ea0985adSJan Engelhardt ---help--- 1556ea0985adSJan Engelhardt Say Y here to get to see options for network filesystems and 1557ea0985adSJan Engelhardt filesystem-related networking code, such as NFS daemon and 1558ea0985adSJan Engelhardt RPCSEC security modules. 1559ea0985adSJan Engelhardt This option alone does not add any kernel code. 1560ea0985adSJan Engelhardt 1561ea0985adSJan Engelhardt If you say N, all options in this submenu will be skipped and 1562ea0985adSJan Engelhardt disabled; if unsure, say Y here. 1563ea0985adSJan Engelhardt 1564ea0985adSJan Engelhardtif NETWORK_FILESYSTEMS 15651da177e4SLinus Torvalds 15661da177e4SLinus Torvaldsconfig NFS_FS 15671da177e4SLinus Torvalds tristate "NFS file system support" 15681da177e4SLinus Torvalds depends on INET 15691da177e4SLinus Torvalds select LOCKD 15701da177e4SLinus Torvalds select SUNRPC 1571b7fa0554SAndreas Gruenbacher select NFS_ACL_SUPPORT if NFS_V3_ACL 15721da177e4SLinus Torvalds help 15731da177e4SLinus Torvalds If you are connected to some other (usually local) Unix computer 15741da177e4SLinus Torvalds (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 15751da177e4SLinus Torvalds on that computer (the NFS server) using the Network File Sharing 15761da177e4SLinus Torvalds protocol, say Y. "Mounting files" means that the client can access 15771da177e4SLinus Torvalds the files with usual UNIX commands as if they were sitting on the 15781da177e4SLinus Torvalds client's hard disk. For this to work, the server must run the 15791da177e4SLinus Torvalds programs nfsd and mountd (but does not need to have NFS file system 15801da177e4SLinus Torvalds support enabled in its kernel). NFS is explained in the Network 15811da177e4SLinus Torvalds Administrator's Guide, available from 15821da177e4SLinus Torvalds <http://www.tldp.org/docs.html#guide>, on its man page: "man 15831da177e4SLinus Torvalds nfs", and in the NFS-HOWTO. 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvalds A superior but less widely used alternative to NFS is provided by 15861da177e4SLinus Torvalds the Coda file system; see "Coda file system support" below. 15871da177e4SLinus Torvalds 15881da177e4SLinus Torvalds If you say Y here, you should have said Y to TCP/IP networking also. 15891da177e4SLinus Torvalds This option would enlarge your kernel by about 27 KB. 15901da177e4SLinus Torvalds 15911da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 15921da177e4SLinus Torvalds module will be called nfs. 15931da177e4SLinus Torvalds 15941da177e4SLinus Torvalds If you are configuring a diskless machine which will mount its root 15951da177e4SLinus Torvalds file system over NFS at boot time, say Y here and to "Kernel 15961da177e4SLinus Torvalds level IP autoconfiguration" above and to "Root file system on NFS" 15971da177e4SLinus Torvalds below. You cannot compile this driver as a module in this case. 15981da177e4SLinus Torvalds There are two packages designed for booting diskless machines over 15991da177e4SLinus Torvalds the net: netboot, available from 16001da177e4SLinus Torvalds <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 16011da177e4SLinus Torvalds available from <http://ftp1.sourceforge.net/etherboot/>. 16021da177e4SLinus Torvalds 16031da177e4SLinus Torvalds If you don't know what all this is about, say N. 16041da177e4SLinus Torvalds 16051da177e4SLinus Torvaldsconfig NFS_V3 16061da177e4SLinus Torvalds bool "Provide NFSv3 client support" 16071da177e4SLinus Torvalds depends on NFS_FS 16081da177e4SLinus Torvalds help 16091da177e4SLinus Torvalds Say Y here if you want your NFS client to be able to speak version 16101da177e4SLinus Torvalds 3 of the NFS protocol. 16111da177e4SLinus Torvalds 16121da177e4SLinus Torvalds If unsure, say Y. 16131da177e4SLinus Torvalds 1614b7fa0554SAndreas Gruenbacherconfig NFS_V3_ACL 1615b7fa0554SAndreas Gruenbacher bool "Provide client support for the NFSv3 ACL protocol extension" 1616b7fa0554SAndreas Gruenbacher depends on NFS_V3 1617b7fa0554SAndreas Gruenbacher help 1618b7fa0554SAndreas Gruenbacher Implement the NFSv3 ACL protocol extension for manipulating POSIX 1619b7fa0554SAndreas Gruenbacher Access Control Lists. The server should also be compiled with 1620b7fa0554SAndreas Gruenbacher the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1621b7fa0554SAndreas Gruenbacher 1622b7fa0554SAndreas Gruenbacher If unsure, say N. 1623b7fa0554SAndreas Gruenbacher 16241da177e4SLinus Torvaldsconfig NFS_V4 16251da177e4SLinus Torvalds bool "Provide NFSv4 client support (EXPERIMENTAL)" 16261da177e4SLinus Torvalds depends on NFS_FS && EXPERIMENTAL 16271da177e4SLinus Torvalds select RPCSEC_GSS_KRB5 16281da177e4SLinus Torvalds help 16291da177e4SLinus Torvalds Say Y here if you want your NFS client to be able to speak the newer 16301da177e4SLinus Torvalds version 4 of the NFS protocol. 16311da177e4SLinus Torvalds 16321da177e4SLinus Torvalds Note: Requires auxiliary userspace daemons which may be found on 16331da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 16341da177e4SLinus Torvalds 16351da177e4SLinus Torvalds If unsure, say N. 16361da177e4SLinus Torvalds 16371da177e4SLinus Torvaldsconfig NFS_DIRECTIO 1638026ed5c9SChuck Lever bool "Allow direct I/O on NFS files" 1639026ed5c9SChuck Lever depends on NFS_FS 16401da177e4SLinus Torvalds help 16411da177e4SLinus Torvalds This option enables applications to perform uncached I/O on files 16421da177e4SLinus Torvalds in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 16431da177e4SLinus Torvalds is set for a file, its data is not cached in the system's page 16441da177e4SLinus Torvalds cache. Data is moved to and from user-level application buffers 16451da177e4SLinus Torvalds directly. Unlike local disk-based file systems, NFS O_DIRECT has 16461da177e4SLinus Torvalds no alignment restrictions. 16471da177e4SLinus Torvalds 16481da177e4SLinus Torvalds Unless your program is designed to use O_DIRECT properly, you are 16491da177e4SLinus Torvalds much better off allowing the NFS client to manage data caching for 16501da177e4SLinus Torvalds you. Misusing O_DIRECT can cause poor server performance or network 16511da177e4SLinus Torvalds storms. This kernel build option defaults OFF to avoid exposing 16521da177e4SLinus Torvalds system administrators unwittingly to a potentially hazardous 16531da177e4SLinus Torvalds feature. 16541da177e4SLinus Torvalds 16551da177e4SLinus Torvalds For more details on NFS O_DIRECT, see fs/nfs/direct.c. 16561da177e4SLinus Torvalds 16571da177e4SLinus Torvalds If unsure, say N. This reduces the size of the NFS client, and 16581da177e4SLinus Torvalds causes open() to return EINVAL if a file residing in NFS is 16591da177e4SLinus Torvalds opened with the O_DIRECT flag. 16601da177e4SLinus Torvalds 16611da177e4SLinus Torvaldsconfig NFSD 16621da177e4SLinus Torvalds tristate "NFS server support" 16631da177e4SLinus Torvalds depends on INET 16641da177e4SLinus Torvalds select LOCKD 16651da177e4SLinus Torvalds select SUNRPC 16661da177e4SLinus Torvalds select EXPORTFS 1667f05e15b5SHerbert Xu select NFSD_V2_ACL if NFSD_V3_ACL 1668f05e15b5SHerbert Xu select NFS_ACL_SUPPORT if NFSD_V2_ACL 1669f05e15b5SHerbert Xu select NFSD_TCP if NFSD_V4 1670f05e15b5SHerbert Xu select CRYPTO_MD5 if NFSD_V4 1671f05e15b5SHerbert Xu select CRYPTO if NFSD_V4 1672f05e15b5SHerbert Xu select FS_POSIX_ACL if NFSD_V4 16731da177e4SLinus Torvalds help 16741da177e4SLinus Torvalds If you want your Linux box to act as an NFS *server*, so that other 16751da177e4SLinus Torvalds computers on your local network which support NFS can access certain 16761da177e4SLinus Torvalds directories on your box transparently, you have two options: you can 16771da177e4SLinus Torvalds use the self-contained user space program nfsd, in which case you 16781da177e4SLinus Torvalds should say N here, or you can say Y and use the kernel based NFS 16791da177e4SLinus Torvalds server. The advantage of the kernel based solution is that it is 16801da177e4SLinus Torvalds faster. 16811da177e4SLinus Torvalds 16821da177e4SLinus Torvalds In either case, you will need support software; the respective 16831da177e4SLinus Torvalds locations are given in the file <file:Documentation/Changes> in the 16841da177e4SLinus Torvalds NFS section. 16851da177e4SLinus Torvalds 16861da177e4SLinus Torvalds If you say Y here, you will get support for version 2 of the NFS 16871da177e4SLinus Torvalds protocol (NFSv2). If you also want NFSv3, say Y to the next question 16881da177e4SLinus Torvalds as well. 16891da177e4SLinus Torvalds 16901da177e4SLinus Torvalds Please read the NFS-HOWTO, available from 16911da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>. 16921da177e4SLinus Torvalds 16931da177e4SLinus Torvalds To compile the NFS server support as a module, choose M here: the 16941da177e4SLinus Torvalds module will be called nfsd. If unsure, say N. 16951da177e4SLinus Torvalds 1696a257cdd0SAndreas Gruenbacherconfig NFSD_V2_ACL 1697a257cdd0SAndreas Gruenbacher bool 1698a257cdd0SAndreas Gruenbacher depends on NFSD 1699a257cdd0SAndreas Gruenbacher 17001da177e4SLinus Torvaldsconfig NFSD_V3 17011da177e4SLinus Torvalds bool "Provide NFSv3 server support" 17021da177e4SLinus Torvalds depends on NFSD 17031da177e4SLinus Torvalds help 17041da177e4SLinus Torvalds If you would like to include the NFSv3 server as well as the NFSv2 17051da177e4SLinus Torvalds server, say Y here. If unsure, say Y. 17061da177e4SLinus Torvalds 1707a257cdd0SAndreas Gruenbacherconfig NFSD_V3_ACL 1708a257cdd0SAndreas Gruenbacher bool "Provide server support for the NFSv3 ACL protocol extension" 1709a257cdd0SAndreas Gruenbacher depends on NFSD_V3 1710a257cdd0SAndreas Gruenbacher help 1711a257cdd0SAndreas Gruenbacher Implement the NFSv3 ACL protocol extension for manipulating POSIX 1712a257cdd0SAndreas Gruenbacher Access Control Lists on exported file systems. NFS clients should 1713a257cdd0SAndreas Gruenbacher be compiled with the NFSv3 ACL protocol extension; see the 1714a257cdd0SAndreas Gruenbacher CONFIG_NFS_V3_ACL option. If unsure, say N. 1715a257cdd0SAndreas Gruenbacher 17161da177e4SLinus Torvaldsconfig NFSD_V4 17171da177e4SLinus Torvalds bool "Provide NFSv4 server support (EXPERIMENTAL)" 17188cd69e1bSTrond Myklebust depends on NFSD && NFSD_V3 && EXPERIMENTAL 171942ed95c4SJ. Bruce Fields select RPCSEC_GSS_KRB5 17201da177e4SLinus Torvalds help 17211da177e4SLinus Torvalds If you would like to include the NFSv4 server as well as the NFSv2 17221da177e4SLinus Torvalds and NFSv3 servers, say Y here. This feature is experimental, and 17231da177e4SLinus Torvalds should only be used if you are interested in helping to test NFSv4. 17241da177e4SLinus Torvalds If unsure, say N. 17251da177e4SLinus Torvalds 17261da177e4SLinus Torvaldsconfig NFSD_TCP 17271da177e4SLinus Torvalds bool "Provide NFS server over TCP support" 17281da177e4SLinus Torvalds depends on NFSD 17291da177e4SLinus Torvalds default y 17301da177e4SLinus Torvalds help 17311da177e4SLinus Torvalds If you want your NFS server to support TCP connections, say Y here. 17321da177e4SLinus Torvalds TCP connections usually perform better than the default UDP when 17331da177e4SLinus Torvalds the network is lossy or congested. If unsure, say Y. 17341da177e4SLinus Torvalds 17351da177e4SLinus Torvaldsconfig ROOT_NFS 17361da177e4SLinus Torvalds bool "Root file system on NFS" 17371da177e4SLinus Torvalds depends on NFS_FS=y && IP_PNP 17381da177e4SLinus Torvalds help 17391da177e4SLinus Torvalds If you want your Linux box to mount its whole root file system (the 17401da177e4SLinus Torvalds one containing the directory /) from some other computer over the 17411da177e4SLinus Torvalds net via NFS (presumably because your box doesn't have a hard disk), 17421da177e4SLinus Torvalds say Y. Read <file:Documentation/nfsroot.txt> for details. It is 17431da177e4SLinus Torvalds likely that in this case, you also want to say Y to "Kernel level IP 17441da177e4SLinus Torvalds autoconfiguration" so that your box can discover its network address 17451da177e4SLinus Torvalds at boot time. 17461da177e4SLinus Torvalds 17471da177e4SLinus Torvalds Most people say N here. 17481da177e4SLinus Torvalds 17491da177e4SLinus Torvaldsconfig LOCKD 17501da177e4SLinus Torvalds tristate 17511da177e4SLinus Torvalds 17521da177e4SLinus Torvaldsconfig LOCKD_V4 17531da177e4SLinus Torvalds bool 17541da177e4SLinus Torvalds depends on NFSD_V3 || NFS_V3 17551da177e4SLinus Torvalds default y 17561da177e4SLinus Torvalds 17571da177e4SLinus Torvaldsconfig EXPORTFS 17581da177e4SLinus Torvalds tristate 17591da177e4SLinus Torvalds 1760a257cdd0SAndreas Gruenbacherconfig NFS_ACL_SUPPORT 1761a257cdd0SAndreas Gruenbacher tristate 1762a257cdd0SAndreas Gruenbacher select FS_POSIX_ACL 1763a257cdd0SAndreas Gruenbacher 1764a257cdd0SAndreas Gruenbacherconfig NFS_COMMON 1765a257cdd0SAndreas Gruenbacher bool 1766a257cdd0SAndreas Gruenbacher depends on NFSD || NFS_FS 1767a257cdd0SAndreas Gruenbacher default y 1768a257cdd0SAndreas Gruenbacher 17691da177e4SLinus Torvaldsconfig SUNRPC 17701da177e4SLinus Torvalds tristate 17711da177e4SLinus Torvalds 17721da177e4SLinus Torvaldsconfig SUNRPC_GSS 17731da177e4SLinus Torvalds tristate 17741da177e4SLinus Torvalds 1775c3a57ed7S\"Talpey, Thomas\config SUNRPC_XPRT_RDMA 1776c3a57ed7S\"Talpey, Thomas\ tristate "RDMA transport for sunrpc (EXPERIMENTAL)" 1777113632d0S\"Talpey, Thomas\ depends on SUNRPC && INFINIBAND && EXPERIMENTAL 1778c3a57ed7S\"Talpey, Thomas\ default m 1779c3a57ed7S\"Talpey, Thomas\ help 1780c3a57ed7S\"Talpey, Thomas\ Adds a client RPC transport for supporting kernel NFS over RDMA 1781c3a57ed7S\"Talpey, Thomas\ mounts, including Infiniband and iWARP. Experimental. 1782c3a57ed7S\"Talpey, Thomas\ 178300a6e7bbSChuck Leverconfig SUNRPC_BIND34 178400a6e7bbSChuck Lever bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" 178500a6e7bbSChuck Lever depends on SUNRPC && EXPERIMENTAL 178600a6e7bbSChuck Lever help 178700a6e7bbSChuck Lever Provides kernel support for querying rpcbind servers via versions 3 178800a6e7bbSChuck Lever and 4 of the rpcbind protocol. The kernel automatically falls back 178900a6e7bbSChuck Lever to version 2 if a remote rpcbind service does not support versions 179000a6e7bbSChuck Lever 3 or 4. 179100a6e7bbSChuck Lever 179200a6e7bbSChuck Lever If unsure, say N to get traditional behavior (version 2 rpcbind 179300a6e7bbSChuck Lever requests only). 179400a6e7bbSChuck Lever 17951da177e4SLinus Torvaldsconfig RPCSEC_GSS_KRB5 17961da177e4SLinus Torvalds tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 17971da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 17981da177e4SLinus Torvalds select SUNRPC_GSS 17991da177e4SLinus Torvalds select CRYPTO 18001da177e4SLinus Torvalds select CRYPTO_MD5 18011da177e4SLinus Torvalds select CRYPTO_DES 1802bcbaecbbSPatrick McHardy select CRYPTO_CBC 18031da177e4SLinus Torvalds help 18041da177e4SLinus Torvalds Provides for secure RPC calls by means of a gss-api 18051da177e4SLinus Torvalds mechanism based on Kerberos V5. This is required for 18061da177e4SLinus Torvalds NFSv4. 18071da177e4SLinus Torvalds 18081da177e4SLinus Torvalds Note: Requires an auxiliary userspace daemon which may be found on 18091da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 18101da177e4SLinus Torvalds 18111da177e4SLinus Torvalds If unsure, say N. 18121da177e4SLinus Torvalds 18131da177e4SLinus Torvaldsconfig RPCSEC_GSS_SPKM3 18141da177e4SLinus Torvalds tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 18151da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18161da177e4SLinus Torvalds select SUNRPC_GSS 18171da177e4SLinus Torvalds select CRYPTO 18181da177e4SLinus Torvalds select CRYPTO_MD5 18191da177e4SLinus Torvalds select CRYPTO_DES 1820df6db302SJ. Bruce Fields select CRYPTO_CAST5 1821bcbaecbbSPatrick McHardy select CRYPTO_CBC 18221da177e4SLinus Torvalds help 18231da177e4SLinus Torvalds Provides for secure RPC calls by means of a gss-api 18241da177e4SLinus Torvalds mechanism based on the SPKM3 public-key mechanism. 18251da177e4SLinus Torvalds 18261da177e4SLinus Torvalds Note: Requires an auxiliary userspace daemon which may be found on 18271da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 18281da177e4SLinus Torvalds 18291da177e4SLinus Torvalds If unsure, say N. 18301da177e4SLinus Torvalds 18311da177e4SLinus Torvaldsconfig SMB_FS 18321da177e4SLinus Torvalds tristate "SMB file system support (to mount Windows shares etc.)" 18331da177e4SLinus Torvalds depends on INET 18341da177e4SLinus Torvalds select NLS 18351da177e4SLinus Torvalds help 18361da177e4SLinus Torvalds SMB (Server Message Block) is the protocol Windows for Workgroups 18371da177e4SLinus Torvalds (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 18381da177e4SLinus Torvalds files and printers over local networks. Saying Y here allows you to 18391da177e4SLinus Torvalds mount their file systems (often called "shares" in this context) and 18401da177e4SLinus Torvalds access them just like any other Unix directory. Currently, this 18411da177e4SLinus Torvalds works only if the Windows machines use TCP/IP as the underlying 18421da177e4SLinus Torvalds transport protocol, and not NetBEUI. For details, read 18431da177e4SLinus Torvalds <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 18441da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>. 18451da177e4SLinus Torvalds 18461da177e4SLinus Torvalds Note: if you just want your box to act as an SMB *server* and make 18471da177e4SLinus Torvalds files and printing services available to Windows clients (which need 18481da177e4SLinus Torvalds to have a TCP/IP stack), you don't need to say Y here; you can use 18491da177e4SLinus Torvalds the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 18501da177e4SLinus Torvalds for that. 18511da177e4SLinus Torvalds 18521da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 18531da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 18541da177e4SLinus Torvalds 18551da177e4SLinus Torvalds To compile the SMB support as a module, choose M here: the module will 18561da177e4SLinus Torvalds be called smbfs. Most people say N, however. 18571da177e4SLinus Torvalds 18581da177e4SLinus Torvaldsconfig SMB_NLS_DEFAULT 18591da177e4SLinus Torvalds bool "Use a default NLS" 18601da177e4SLinus Torvalds depends on SMB_FS 18611da177e4SLinus Torvalds help 18621da177e4SLinus Torvalds Enabling this will make smbfs use nls translations by default. You 18631da177e4SLinus Torvalds need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 18641da177e4SLinus Torvalds settings and you need to give the default nls for the SMB server as 18651da177e4SLinus Torvalds CONFIG_SMB_NLS_REMOTE. 18661da177e4SLinus Torvalds 18671da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18681da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18691da177e4SLinus Torvalds 18701da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 18711da177e4SLinus Torvalds 18721da177e4SLinus Torvaldsconfig SMB_NLS_REMOTE 18731da177e4SLinus Torvalds string "Default Remote NLS Option" 18741da177e4SLinus Torvalds depends on SMB_NLS_DEFAULT 18751da177e4SLinus Torvalds default "cp437" 18761da177e4SLinus Torvalds help 18771da177e4SLinus Torvalds This setting allows you to specify a default value for which 18781da177e4SLinus Torvalds codepage the server uses. If this field is left blank no 18791da177e4SLinus Torvalds translations will be done by default. The local codepage/charset 18801da177e4SLinus Torvalds default to CONFIG_NLS_DEFAULT. 18811da177e4SLinus Torvalds 18821da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18831da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18841da177e4SLinus Torvalds 18851da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 18861da177e4SLinus Torvalds 18871da177e4SLinus Torvaldsconfig CIFS 18881da177e4SLinus Torvalds tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 18891da177e4SLinus Torvalds depends on INET 18901da177e4SLinus Torvalds select NLS 18911da177e4SLinus Torvalds help 18921da177e4SLinus Torvalds This is the client VFS module for the Common Internet File System 18931da177e4SLinus Torvalds (CIFS) protocol which is the successor to the Server Message Block 18941da177e4SLinus Torvalds (SMB) protocol, the native file sharing mechanism for most early 18951da177e4SLinus Torvalds PC operating systems. The CIFS protocol is fully supported by 18961da177e4SLinus Torvalds file servers such as Windows 2000 (including Windows 2003, NT 4 18971da177e4SLinus Torvalds and Windows XP) as well by Samba (which provides excellent CIFS 1898ec58ef03SSteve French server support for Linux and many other operating systems). Limited 18998af18971SSteve French support for OS/2 and Windows ME and similar servers is provided as well. 19001da177e4SLinus Torvalds 19011da177e4SLinus Torvalds The intent of the cifs module is to provide an advanced 19021da177e4SLinus Torvalds network file system client for mounting to CIFS compliant servers, 19031da177e4SLinus Torvalds including support for dfs (hierarchical name space), secure per-user 19041da177e4SLinus Torvalds session establishment, safe distributed caching (oplock), optional 19058af18971SSteve French packet signing, Unicode and other internationalization improvements. 19068af18971SSteve French If you need to mount to Samba or Windows from this machine, say Y. 19071da177e4SLinus Torvalds 19081da177e4SLinus Torvaldsconfig CIFS_STATS 19091da177e4SLinus Torvalds bool "CIFS statistics" 19101da177e4SLinus Torvalds depends on CIFS 19111da177e4SLinus Torvalds help 19121da177e4SLinus Torvalds Enabling this option will cause statistics for each server share 19131da177e4SLinus Torvalds mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 19141da177e4SLinus Torvalds 1915ec58ef03SSteve Frenchconfig CIFS_STATS2 19163979877eSSteve French bool "Extended statistics" 1917ec58ef03SSteve French depends on CIFS_STATS 1918ec58ef03SSteve French help 1919ec58ef03SSteve French Enabling this option will allow more detailed statistics on SMB 1920ec58ef03SSteve French request timing to be displayed in /proc/fs/cifs/DebugData and also 1921ec58ef03SSteve French allow optional logging of slow responses to dmesg (depending on the 1922ec58ef03SSteve French value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1923ec58ef03SSteve French These additional statistics may have a minor effect on performance 1924ec58ef03SSteve French and memory utilization. 1925ec58ef03SSteve French 1926ec58ef03SSteve French Unless you are a developer or are doing network performance analysis 1927ec58ef03SSteve French or tuning, say N. 1928ec58ef03SSteve French 19293979877eSSteve Frenchconfig CIFS_WEAK_PW_HASH 19303979877eSSteve French bool "Support legacy servers which use weaker LANMAN security" 19313979877eSSteve French depends on CIFS 19323979877eSSteve French help 19333979877eSSteve French Modern CIFS servers including Samba and most Windows versions 19343979877eSSteve French (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 19353979877eSSteve French security mechanisms. These hash the password more securely 19363979877eSSteve French than the mechanisms used in the older LANMAN version of the 19373979877eSSteve French SMB protocol needed to establish sessions with old SMB servers. 19383979877eSSteve French 19393979877eSSteve French Enabling this option allows the cifs module to mount to older 19403979877eSSteve French LANMAN based servers such as OS/2 and Windows 95, but such 19413979877eSSteve French mounts may be less secure than mounts using NTLM or more recent 19423979877eSSteve French security mechanisms if you are on a public network. Unless you 19433979877eSSteve French have a need to access old SMB servers (and are on a private 19443979877eSSteve French network) you probably want to say N. Even if this support 19453979877eSSteve French is enabled in the kernel build, they will not be used 19463979877eSSteve French automatically. At runtime LANMAN mounts are disabled but 19473979877eSSteve French can be set to required (or optional) either in 19483979877eSSteve French /proc/fs/cifs (see fs/cifs/README for more detail) or via an 19493979877eSSteve French option on the mount command. This support is disabled by 19503979877eSSteve French default in order to reduce the possibility of a downgrade 19513979877eSSteve French attack. 19523979877eSSteve French 19533979877eSSteve French If unsure, say N. 19543979877eSSteve French 19551da177e4SLinus Torvaldsconfig CIFS_XATTR 1956ec58ef03SSteve French bool "CIFS extended attributes" 19571da177e4SLinus Torvalds depends on CIFS 19581da177e4SLinus Torvalds help 19591da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 19601da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 19611da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). CIFS maps the name of 19621da177e4SLinus Torvalds extended attributes beginning with the user namespace prefix 19631da177e4SLinus Torvalds to SMB/CIFS EAs. EAs are stored on Windows servers without the 19641da177e4SLinus Torvalds user namespace prefix, but their names are seen by Linux cifs clients 19651da177e4SLinus Torvalds prefaced by the user namespace prefix. The system namespace 19661da177e4SLinus Torvalds (used by some filesystems to store ACLs) is not supported at 19671da177e4SLinus Torvalds this time. 19681da177e4SLinus Torvalds 19691da177e4SLinus Torvalds If unsure, say N. 19701da177e4SLinus Torvalds 19711da177e4SLinus Torvaldsconfig CIFS_POSIX 1972ec58ef03SSteve French bool "CIFS POSIX Extensions" 19731da177e4SLinus Torvalds depends on CIFS_XATTR 19741da177e4SLinus Torvalds help 19751da177e4SLinus Torvalds Enabling this option will cause the cifs client to attempt to 19761da177e4SLinus Torvalds negotiate a newer dialect with servers, such as Samba 3.0.5 19771da177e4SLinus Torvalds or later, that optionally can handle more POSIX like (rather 19781da177e4SLinus Torvalds than Windows like) file behavior. It also enables 19791da177e4SLinus Torvalds support for POSIX ACLs (getfacl and setfacl) to servers 19801da177e4SLinus Torvalds (such as Samba 3.10 and later) which can negotiate 19811da177e4SLinus Torvalds CIFS POSIX ACL support. If unsure, say N. 19821da177e4SLinus Torvalds 19833979877eSSteve Frenchconfig CIFS_DEBUG2 19843856a9d4SSteve French bool "Enable additional CIFS debugging routines" 19858ba10ab1SSteve French depends on CIFS 19863979877eSSteve French help 19873979877eSSteve French Enabling this option adds a few more debugging routines 19883979877eSSteve French to the cifs code which slightly increases the size of 19893979877eSSteve French the cifs module and can cause additional logging of debug 19903979877eSSteve French messages in some error paths, slowing performance. This 19913979877eSSteve French option can be turned off unless you are debugging 19923979877eSSteve French cifs problems. If unsure, say N. 19933979877eSSteve French 19941da177e4SLinus Torvaldsconfig CIFS_EXPERIMENTAL 19951da177e4SLinus Torvalds bool "CIFS Experimental Features (EXPERIMENTAL)" 1996cb9dbff9SSteve French depends on CIFS && EXPERIMENTAL 19971da177e4SLinus Torvalds help 1998ec58ef03SSteve French Enables cifs features under testing. These features are 19998af18971SSteve French experimental and currently include DFS support and directory 20008af18971SSteve French change notification ie fcntl(F_DNOTIFY), as well as the upcall 20018af18971SSteve French mechanism which will be used for Kerberos session negotiation 20028af18971SSteve French and uid remapping. Some of these features also may depend on 20038af18971SSteve French setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 20048af18971SSteve French (which is disabled by default). See the file fs/cifs/README 20058af18971SSteve French for more details. If unsure, say N. 20061da177e4SLinus Torvalds 2007a2653ebaSSteve Frenchconfig CIFS_UPCALL 20083979877eSSteve French bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)" 2009a2653ebaSSteve French depends on CIFS_EXPERIMENTAL 2010230a0395SAndrew Morton depends on CONNECTOR 2011a2653ebaSSteve French help 2012a2653ebaSSteve French Enables an upcall mechanism for CIFS which will be used to contact 2013a2653ebaSSteve French userspace helper utilities to provide SPNEGO packaged Kerberos 2014a2653ebaSSteve French tickets which are needed to mount to certain secure servers 20151b397f4fSSteve French (for which more secure Kerberos authentication is required). If 20161b397f4fSSteve French unsure, say N. 2017a2653ebaSSteve French 20181da177e4SLinus Torvaldsconfig NCP_FS 20191da177e4SLinus Torvalds tristate "NCP file system support (to mount NetWare volumes)" 20201da177e4SLinus Torvalds depends on IPX!=n || INET 20211da177e4SLinus Torvalds help 20221da177e4SLinus Torvalds NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 20231da177e4SLinus Torvalds used by Novell NetWare clients to talk to file servers. It is to 20241da177e4SLinus Torvalds IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 20251da177e4SLinus Torvalds to mount NetWare file server volumes and to access them just like 20261da177e4SLinus Torvalds any other Unix directory. For details, please read the file 20271da177e4SLinus Torvalds <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 20281da177e4SLinus Torvalds the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 20291da177e4SLinus Torvalds 20301da177e4SLinus Torvalds You do not have to say Y here if you want your Linux box to act as a 20311da177e4SLinus Torvalds file *server* for Novell NetWare clients. 20321da177e4SLinus Torvalds 20331da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 20341da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 20351da177e4SLinus Torvalds 20361da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 20371da177e4SLinus Torvalds ncpfs. Say N unless you are connected to a Novell network. 20381da177e4SLinus Torvalds 20391da177e4SLinus Torvaldssource "fs/ncpfs/Kconfig" 20401da177e4SLinus Torvalds 20411da177e4SLinus Torvaldsconfig CODA_FS 20421da177e4SLinus Torvalds tristate "Coda file system support (advanced network fs)" 20431da177e4SLinus Torvalds depends on INET 20441da177e4SLinus Torvalds help 20451da177e4SLinus Torvalds Coda is an advanced network file system, similar to NFS in that it 20461da177e4SLinus Torvalds enables you to mount file systems of a remote server and access them 20471da177e4SLinus Torvalds with regular Unix commands as if they were sitting on your hard 20481da177e4SLinus Torvalds disk. Coda has several advantages over NFS: support for 20491da177e4SLinus Torvalds disconnected operation (e.g. for laptops), read/write server 20501da177e4SLinus Torvalds replication, security model for authentication and encryption, 20511da177e4SLinus Torvalds persistent client caches and write back caching. 20521da177e4SLinus Torvalds 20531da177e4SLinus Torvalds If you say Y here, your Linux box will be able to act as a Coda 20541da177e4SLinus Torvalds *client*. You will need user level code as well, both for the 20551da177e4SLinus Torvalds client and server. Servers are currently user level, i.e. they need 20561da177e4SLinus Torvalds no kernel support. Please read 20571da177e4SLinus Torvalds <file:Documentation/filesystems/coda.txt> and check out the Coda 20581da177e4SLinus Torvalds home page <http://www.coda.cs.cmu.edu/>. 20591da177e4SLinus Torvalds 20601da177e4SLinus Torvalds To compile the coda client support as a module, choose M here: the 20611da177e4SLinus Torvalds module will be called coda. 20621da177e4SLinus Torvalds 20631da177e4SLinus Torvaldsconfig CODA_FS_OLD_API 20641da177e4SLinus Torvalds bool "Use 96-bit Coda file identifiers" 20651da177e4SLinus Torvalds depends on CODA_FS 20661da177e4SLinus Torvalds help 20671da177e4SLinus Torvalds A new kernel-userspace API had to be introduced for Coda v6.0 20681da177e4SLinus Torvalds to support larger 128-bit file identifiers as needed by the 20691da177e4SLinus Torvalds new realms implementation. 20701da177e4SLinus Torvalds 20711da177e4SLinus Torvalds However this new API is not backward compatible with older 20721da177e4SLinus Torvalds clients. If you really need to run the old Coda userspace 20731da177e4SLinus Torvalds cache manager then say Y. 20741da177e4SLinus Torvalds 20751da177e4SLinus Torvalds For most cases you probably want to say N. 20761da177e4SLinus Torvalds 20771da177e4SLinus Torvaldsconfig AFS_FS 207864aaa4f8SDavid Howells tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 20791da177e4SLinus Torvalds depends on INET && EXPERIMENTAL 208008e0e7c8SDavid Howells select AF_RXRPC 20811da177e4SLinus Torvalds help 20821da177e4SLinus Torvalds If you say Y here, you will get an experimental Andrew File System 20831da177e4SLinus Torvalds driver. It currently only supports unsecured read-only AFS access. 20841da177e4SLinus Torvalds 2085cc2e2767SMatt LaPlante See <file:Documentation/filesystems/afs.txt> for more information. 20861da177e4SLinus Torvalds 20871da177e4SLinus Torvalds If unsure, say N. 20881da177e4SLinus Torvalds 208908e0e7c8SDavid Howellsconfig AFS_DEBUG 209008e0e7c8SDavid Howells bool "AFS dynamic debugging" 209108e0e7c8SDavid Howells depends on AFS_FS 209208e0e7c8SDavid Howells help 209308e0e7c8SDavid Howells Say Y here to make runtime controllable debugging messages appear. 209408e0e7c8SDavid Howells 209508e0e7c8SDavid Howells See <file:Documentation/filesystems/afs.txt> for more information. 209608e0e7c8SDavid Howells 209708e0e7c8SDavid Howells If unsure, say N. 209808e0e7c8SDavid Howells 209993fa58cbSEric Van Hensbergenconfig 9P_FS 210093fa58cbSEric Van Hensbergen tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2101bd238fb4SLatchesar Ionkov depends on INET && NET_9P && EXPERIMENTAL 210293fa58cbSEric Van Hensbergen help 210393fa58cbSEric Van Hensbergen If you say Y here, you will get experimental support for 210493fa58cbSEric Van Hensbergen Plan 9 resource sharing via the 9P2000 protocol. 210593fa58cbSEric Van Hensbergen 210693fa58cbSEric Van Hensbergen See <http://v9fs.sf.net> for more information. 210793fa58cbSEric Van Hensbergen 210893fa58cbSEric Van Hensbergen If unsure, say N. 210993fa58cbSEric Van Hensbergen 2110ea0985adSJan Engelhardtendif # NETWORK_FILESYSTEMS 21111da177e4SLinus Torvalds 21129361401eSDavid Howellsif BLOCK 21131da177e4SLinus Torvaldsmenu "Partition Types" 21141da177e4SLinus Torvalds 21151da177e4SLinus Torvaldssource "fs/partitions/Kconfig" 21161da177e4SLinus Torvalds 21171da177e4SLinus Torvaldsendmenu 21189361401eSDavid Howellsendif 21191da177e4SLinus Torvalds 21201da177e4SLinus Torvaldssource "fs/nls/Kconfig" 2121e7fd4179SDavid Teiglandsource "fs/dlm/Kconfig" 21221da177e4SLinus Torvalds 21231da177e4SLinus Torvaldsendmenu 21241da177e4SLinus Torvalds 2125