11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# File system configuration 31da177e4SLinus Torvalds# 41da177e4SLinus Torvalds 51da177e4SLinus Torvaldsmenu "File systems" 61da177e4SLinus Torvalds 79361401eSDavid Howellsif BLOCK 89361401eSDavid Howells 91da177e4SLinus Torvaldsconfig EXT2_FS 101da177e4SLinus Torvalds tristate "Second extended fs support" 111da177e4SLinus Torvalds help 121da177e4SLinus Torvalds Ext2 is a standard Linux file system for hard disks. 131da177e4SLinus Torvalds 141da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 15d23edbd3SJan Engelhardt module will be called ext2. 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds If unsure, say Y. 181da177e4SLinus Torvalds 191da177e4SLinus Torvaldsconfig EXT2_FS_XATTR 201da177e4SLinus Torvalds bool "Ext2 extended attributes" 211da177e4SLinus Torvalds depends on EXT2_FS 221da177e4SLinus Torvalds help 231da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 241da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 251da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds If unsure, say N. 281da177e4SLinus Torvalds 291da177e4SLinus Torvaldsconfig EXT2_FS_POSIX_ACL 301da177e4SLinus Torvalds bool "Ext2 POSIX Access Control Lists" 311da177e4SLinus Torvalds depends on EXT2_FS_XATTR 32b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 331da177e4SLinus Torvalds help 341da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 351da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 381da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 411da177e4SLinus Torvalds 421da177e4SLinus Torvaldsconfig EXT2_FS_SECURITY 431da177e4SLinus Torvalds bool "Ext2 Security Labels" 441da177e4SLinus Torvalds depends on EXT2_FS_XATTR 451da177e4SLinus Torvalds help 461da177e4SLinus Torvalds Security labels support alternative access control models 471da177e4SLinus Torvalds implemented by security modules like SELinux. This option 481da177e4SLinus Torvalds enables an extended attribute handler for file security 491da177e4SLinus Torvalds labels in the ext2 filesystem. 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds If you are not using a security module that requires using 521da177e4SLinus Torvalds extended attributes for file security labels, say N. 531da177e4SLinus Torvalds 546d79125bSCarsten Otteconfig EXT2_FS_XIP 556d79125bSCarsten Otte bool "Ext2 execute in place support" 560c426f26SAl Viro depends on EXT2_FS && MMU 576d79125bSCarsten Otte help 586d79125bSCarsten Otte Execute in place can be used on memory-backed block devices. If you 596d79125bSCarsten Otte enable this option, you can select to mount block devices which are 606d79125bSCarsten Otte capable of this feature without using the page cache. 616d79125bSCarsten Otte 626d79125bSCarsten Otte If you do not use a block device that is capable of using this, 636d79125bSCarsten Otte or if unsure, say N. 646d79125bSCarsten Otte 656d79125bSCarsten Otteconfig FS_XIP 666d79125bSCarsten Otte# execute in place 676d79125bSCarsten Otte bool 686d79125bSCarsten Otte depends on EXT2_FS_XIP 696d79125bSCarsten Otte default y 706d79125bSCarsten Otte 711da177e4SLinus Torvaldsconfig EXT3_FS 721da177e4SLinus Torvalds tristate "Ext3 journalling file system support" 73b4e40a51SMark Fasheh select JBD 741da177e4SLinus Torvalds help 75cc2e2767SMatt LaPlante This is the journalling version of the Second extended file system 761da177e4SLinus Torvalds (often called ext3), the de facto standard Linux file system 771da177e4SLinus Torvalds (method to organize files on a storage device) for hard disks. 781da177e4SLinus Torvalds 79cc2e2767SMatt LaPlante The journalling code included in this driver means you do not have 801da177e4SLinus Torvalds to run e2fsck (file system checker) on your file systems after a 811da177e4SLinus Torvalds crash. The journal keeps track of any changes that were being made 821da177e4SLinus Torvalds at the time the system crashed, and can ensure that your file system 831da177e4SLinus Torvalds is consistent without the need for a lengthy check. 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds Other than adding the journal to the file system, the on-disk format 861da177e4SLinus Torvalds of ext3 is identical to ext2. It is possible to freely switch 871da177e4SLinus Torvalds between using the ext3 driver and the ext2 driver, as long as the 881da177e4SLinus Torvalds file system has been cleanly unmounted, or e2fsck is run on the file 891da177e4SLinus Torvalds system. 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds To add a journal on an existing ext2 file system or change the 921da177e4SLinus Torvalds behavior of ext3 file systems, you can use the tune2fs utility ("man 931da177e4SLinus Torvalds tune2fs"). To modify attributes of files and directories on ext3 941da177e4SLinus Torvalds file systems, use chattr ("man chattr"). You need to be using 951da177e4SLinus Torvalds e2fsprogs version 1.20 or later in order to create ext3 journals 961da177e4SLinus Torvalds (available at <http://sourceforge.net/projects/e2fsprogs/>). 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 99d23edbd3SJan Engelhardt module will be called ext3. 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvaldsconfig EXT3_FS_XATTR 1021da177e4SLinus Torvalds bool "Ext3 extended attributes" 1031da177e4SLinus Torvalds depends on EXT3_FS 1041da177e4SLinus Torvalds default y 1051da177e4SLinus Torvalds help 1061da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 1071da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 1081da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds If unsure, say N. 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds You need this for POSIX ACL support on ext3. 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvaldsconfig EXT3_FS_POSIX_ACL 1151da177e4SLinus Torvalds bool "Ext3 POSIX Access Control Lists" 1161da177e4SLinus Torvalds depends on EXT3_FS_XATTR 117b84c2157SAndreas Gruenbacher select FS_POSIX_ACL 1181da177e4SLinus Torvalds help 1191da177e4SLinus Torvalds Posix Access Control Lists (ACLs) support permissions for users and 1201da177e4SLinus Torvalds groups beyond the owner/group/world scheme. 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds To learn more about Access Control Lists, visit the Posix ACLs for 1231da177e4SLinus Torvalds Linux website <http://acl.bestbits.at/>. 1241da177e4SLinus Torvalds 1251da177e4SLinus Torvalds If you don't know what Access Control Lists are, say N 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvaldsconfig EXT3_FS_SECURITY 1281da177e4SLinus Torvalds bool "Ext3 Security Labels" 1291da177e4SLinus Torvalds depends on EXT3_FS_XATTR 1301da177e4SLinus Torvalds help 1311da177e4SLinus Torvalds Security labels support alternative access control models 1321da177e4SLinus Torvalds implemented by security modules like SELinux. This option 1331da177e4SLinus Torvalds enables an extended attribute handler for file security 1341da177e4SLinus Torvalds labels in the ext3 filesystem. 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds If you are not using a security module that requires using 1371da177e4SLinus Torvalds extended attributes for file security labels, say N. 1381da177e4SLinus Torvalds 13902ea2104SMingming Caoconfig EXT4DEV_FS 14002ea2104SMingming Cao tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)" 14102ea2104SMingming Cao depends on EXPERIMENTAL 142dab291afSMingming Cao select JBD2 143717d50e4SAndreas Dilger select CRC16 14402ea2104SMingming Cao help 14502ea2104SMingming Cao Ext4dev is a predecessor filesystem of the next generation 14602ea2104SMingming Cao extended fs ext4, based on ext3 filesystem code. It will be 14702ea2104SMingming Cao renamed ext4 fs later, once ext4dev is mature and stabilized. 14802ea2104SMingming Cao 14902ea2104SMingming Cao Unlike the change from ext2 filesystem to ext3 filesystem, 15002ea2104SMingming Cao the on-disk format of ext4dev is not the same as ext3 any more: 15102ea2104SMingming Cao it is based on extent maps and it supports 48-bit physical block 15202ea2104SMingming Cao numbers. These combined on-disk format changes will allow 15302ea2104SMingming Cao ext4dev/ext4 to handle more than 16 TB filesystem volumes -- 15402ea2104SMingming Cao a hard limit that ext3 cannot overcome without changing the 15502ea2104SMingming Cao on-disk format. 15602ea2104SMingming Cao 15702ea2104SMingming Cao Other than extent maps and 48-bit block numbers, ext4dev also is 15802ea2104SMingming Cao likely to have other new features such as persistent preallocation, 15902ea2104SMingming Cao high resolution time stamps, and larger file support etc. These 16002ea2104SMingming Cao features will be added to ext4dev gradually. 16102ea2104SMingming Cao 16202ea2104SMingming Cao To compile this file system support as a module, choose M here. The 163d23edbd3SJan Engelhardt module will be called ext4dev. 16402ea2104SMingming Cao 16502ea2104SMingming Cao If unsure, say N. 16602ea2104SMingming Cao 16702ea2104SMingming Caoconfig EXT4DEV_FS_XATTR 16802ea2104SMingming Cao bool "Ext4dev extended attributes" 16902ea2104SMingming Cao depends on EXT4DEV_FS 17002ea2104SMingming Cao default y 17102ea2104SMingming Cao help 17202ea2104SMingming Cao Extended attributes are name:value pairs associated with inodes by 17302ea2104SMingming Cao the kernel or by users (see the attr(5) manual page, or visit 17402ea2104SMingming Cao <http://acl.bestbits.at/> for details). 17502ea2104SMingming Cao 17602ea2104SMingming Cao If unsure, say N. 17702ea2104SMingming Cao 17802ea2104SMingming Cao You need this for POSIX ACL support on ext4dev/ext4. 17902ea2104SMingming Cao 18002ea2104SMingming Caoconfig EXT4DEV_FS_POSIX_ACL 18102ea2104SMingming Cao bool "Ext4dev POSIX Access Control Lists" 18202ea2104SMingming Cao depends on EXT4DEV_FS_XATTR 18302ea2104SMingming Cao select FS_POSIX_ACL 18402ea2104SMingming Cao help 18502ea2104SMingming Cao POSIX Access Control Lists (ACLs) support permissions for users and 18602ea2104SMingming Cao groups beyond the owner/group/world scheme. 18702ea2104SMingming Cao 18802ea2104SMingming Cao To learn more about Access Control Lists, visit the POSIX ACLs for 18902ea2104SMingming Cao Linux website <http://acl.bestbits.at/>. 19002ea2104SMingming Cao 19102ea2104SMingming Cao If you don't know what Access Control Lists are, say N 19202ea2104SMingming Cao 19302ea2104SMingming Caoconfig EXT4DEV_FS_SECURITY 19402ea2104SMingming Cao bool "Ext4dev Security Labels" 19502ea2104SMingming Cao depends on EXT4DEV_FS_XATTR 19602ea2104SMingming Cao help 19702ea2104SMingming Cao Security labels support alternative access control models 19802ea2104SMingming Cao implemented by security modules like SELinux. This option 19902ea2104SMingming Cao enables an extended attribute handler for file security 20002ea2104SMingming Cao labels in the ext4dev/ext4 filesystem. 20102ea2104SMingming Cao 20202ea2104SMingming Cao If you are not using a security module that requires using 20302ea2104SMingming Cao extended attributes for file security labels, say N. 20402ea2104SMingming Cao 2051da177e4SLinus Torvaldsconfig JBD 2061da177e4SLinus Torvalds tristate 2071da177e4SLinus Torvalds help 208cc2e2767SMatt LaPlante This is a generic journalling layer for block devices. It is 209b4e40a51SMark Fasheh currently used by the ext3 and OCFS2 file systems, but it could 210b4e40a51SMark Fasheh also be used to add journal support to other file systems or block 211b4e40a51SMark Fasheh devices such as RAID or LVM. 2121da177e4SLinus Torvalds 213b4e40a51SMark Fasheh If you are using the ext3 or OCFS2 file systems, you need to 214b4e40a51SMark Fasheh say Y here. If you are not using ext3 OCFS2 then you will probably 215b4e40a51SMark Fasheh want to say N. 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds To compile this device as a module, choose M here: the module will be 218b4e40a51SMark Fasheh called jbd. If you are compiling ext3 or OCFS2 into the kernel, 219b4e40a51SMark Fasheh you cannot compile this code as a module. 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvaldsconfig JBD_DEBUG 2221da177e4SLinus Torvalds bool "JBD (ext3) debugging support" 223c2a9159cSJose R. Santos depends on JBD && DEBUG_FS 2241da177e4SLinus Torvalds help 2251da177e4SLinus Torvalds If you are using the ext3 journaled file system (or potentially any 2261da177e4SLinus Torvalds other file system/device using JBD), this option allows you to 2271da177e4SLinus Torvalds enable debugging output while the system is running, in order to 2281da177e4SLinus Torvalds help track down any problems you are having. By default the 2291da177e4SLinus Torvalds debugging output will be turned off. 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds If you select Y here, then you will be able to turn on debugging 232c2a9159cSJose R. Santos with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a 233c2a9159cSJose R. Santos number between 1 and 5, the higher the number, the more debugging 234c2a9159cSJose R. Santos output is generated. To turn debugging off again, do 235c2a9159cSJose R. Santos "echo 0 > /sys/kernel/debug/jbd/jbd-debug". 2361da177e4SLinus Torvalds 237dab291afSMingming Caoconfig JBD2 238dab291afSMingming Cao tristate 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 462*5a58c3efSJan Karaconfig OCFS2_DEBUG_FS 463*5a58c3efSJan Kara bool "OCFS2 expensive checks" 464*5a58c3efSJan Kara depends on OCFS2_FS 465*5a58c3efSJan Kara default n 466*5a58c3efSJan Kara help 467*5a58c3efSJan Kara This option will enable expensive consistency checks. Enable 468*5a58c3efSJan Kara this option for debugging only as it is likely to decrease 469*5a58c3efSJan Kara performance of the filesystem. 470*5a58c3efSJan Kara 4711da177e4SLinus Torvaldsconfig MINIX_FS 4721da177e4SLinus Torvalds tristate "Minix fs support" 4731da177e4SLinus Torvalds help 4741da177e4SLinus Torvalds Minix is a simple operating system used in many classes about OS's. 4751da177e4SLinus Torvalds The minix file system (method to organize files on a hard disk 4761da177e4SLinus Torvalds partition or a floppy disk) was the original file system for Linux, 4771da177e4SLinus Torvalds but has been superseded by the second extended file system ext2fs. 4781da177e4SLinus Torvalds You don't want to use the minix file system on your hard disk 4791da177e4SLinus Torvalds because of certain built-in restrictions, but it is sometimes found 4801da177e4SLinus Torvalds on older Linux floppy disks. This option will enlarge your kernel 4811da177e4SLinus Torvalds by about 28 KB. If unsure, say N. 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 4841da177e4SLinus Torvalds module will be called minix. Note that the file system of your root 4851da177e4SLinus Torvalds partition (the one containing the directory /) cannot be compiled as 4861da177e4SLinus Torvalds a module. 4871da177e4SLinus Torvalds 4881da177e4SLinus Torvaldsconfig ROMFS_FS 4891da177e4SLinus Torvalds tristate "ROM file system support" 4901da177e4SLinus Torvalds ---help--- 4911da177e4SLinus Torvalds This is a very small read-only file system mainly intended for 4921da177e4SLinus Torvalds initial ram disks of installation disks, but it could be used for 4931da177e4SLinus Torvalds other read-only media as well. Read 4941da177e4SLinus Torvalds <file:Documentation/filesystems/romfs.txt> for details. 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 4971da177e4SLinus Torvalds module will be called romfs. Note that the file system of your 4981da177e4SLinus Torvalds root partition (the one containing the directory /) cannot be a 4991da177e4SLinus Torvalds module. 5001da177e4SLinus Torvalds 5011da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 5021da177e4SLinus Torvalds answer N. 5031da177e4SLinus Torvalds 5049361401eSDavid Howellsendif 5059361401eSDavid Howells 5060eeca283SRobert Loveconfig INOTIFY 5070eeca283SRobert Love bool "Inotify file change notification support" 5080eeca283SRobert Love default y 5090eeca283SRobert Love ---help--- 5102d9048e2SAmy Griffis Say Y here to enable inotify support. Inotify is a file change 5112d9048e2SAmy Griffis notification system and a replacement for dnotify. Inotify fixes 5122d9048e2SAmy Griffis numerous shortcomings in dnotify and introduces several new features 5132d9048e2SAmy Griffis including multiple file events, one-shot support, and unmount 5143de11748SRobert Love notification. 5153de11748SRobert Love 516e403149cSDirk Hohndel For more information, see <file:Documentation/filesystems/inotify.txt> 5170eeca283SRobert Love 5180eeca283SRobert Love If unsure, say Y. 5190eeca283SRobert Love 5202d9048e2SAmy Griffisconfig INOTIFY_USER 5212d9048e2SAmy Griffis bool "Inotify support for userspace" 5222d9048e2SAmy Griffis depends on INOTIFY 5232d9048e2SAmy Griffis default y 5242d9048e2SAmy Griffis ---help--- 5252d9048e2SAmy Griffis Say Y here to enable inotify support for userspace, including the 5262d9048e2SAmy Griffis associated system calls. Inotify allows monitoring of both files and 5272d9048e2SAmy Griffis directories via a single open fd. Events are read from the file 5282d9048e2SAmy Griffis descriptor, which is also select()- and poll()-able. 5292d9048e2SAmy Griffis 530e403149cSDirk Hohndel For more information, see <file:Documentation/filesystems/inotify.txt> 5312d9048e2SAmy Griffis 5322d9048e2SAmy Griffis If unsure, say Y. 5332d9048e2SAmy Griffis 5341da177e4SLinus Torvaldsconfig QUOTA 5351da177e4SLinus Torvalds bool "Quota support" 5361da177e4SLinus Torvalds help 5371da177e4SLinus Torvalds If you say Y here, you will be able to set per user limits for disk 5381da177e4SLinus Torvalds usage (also called disk quotas). Currently, it works for the 5391da177e4SLinus Torvalds ext2, ext3, and reiserfs file system. ext3 also supports journalled 5401da177e4SLinus Torvalds quotas for which you don't need to run quotacheck(8) after an unclean 541919532a5SAdrian Bunk shutdown. 542919532a5SAdrian Bunk For further details, read the Quota mini-HOWTO, available from 5431da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or the documentation provided 5441da177e4SLinus Torvalds with the quota tools. Probably the quota support is only useful for 5451da177e4SLinus Torvalds multi user systems. If unsure, say N. 5461da177e4SLinus Torvalds 5478e893469SJan Karaconfig QUOTA_NETLINK_INTERFACE 5488e893469SJan Kara bool "Report quota messages through netlink interface" 5498e893469SJan Kara depends on QUOTA && NET 5508e893469SJan Kara help 5518e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5528e893469SJan Kara hardlimit, etc.) will be reported through netlink interface. If unsure, 5538e893469SJan Kara say Y. 5548e893469SJan Kara 5558e893469SJan Karaconfig PRINT_QUOTA_WARNING 5568e893469SJan Kara bool "Print quota warnings to console (OBSOLETE)" 5578e893469SJan Kara depends on QUOTA 5588e893469SJan Kara default y 5598e893469SJan Kara help 5608e893469SJan Kara If you say Y here, quota warnings (about exceeding softlimit, reaching 5618e893469SJan Kara hardlimit, etc.) will be printed to the process' controlling terminal. 5628e893469SJan Kara Note that this behavior is currently deprecated and may go away in 5638e893469SJan Kara future. Please use notification via netlink socket instead. 5648e893469SJan Kara 5651da177e4SLinus Torvaldsconfig QFMT_V1 5661da177e4SLinus Torvalds tristate "Old quota format support" 5671da177e4SLinus Torvalds depends on QUOTA 5681da177e4SLinus Torvalds help 5691da177e4SLinus Torvalds This quota format was (is) used by kernels earlier than 2.4.22. If 5701da177e4SLinus Torvalds you have quota working and you don't want to convert to new quota 5711da177e4SLinus Torvalds format say Y here. 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvaldsconfig QFMT_V2 5741da177e4SLinus Torvalds tristate "Quota format v2 support" 5751da177e4SLinus Torvalds depends on QUOTA 5761da177e4SLinus Torvalds help 5771da177e4SLinus Torvalds This quota format allows using quotas with 32-bit UIDs/GIDs. If you 578919532a5SAdrian Bunk need this functionality say Y here. 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvaldsconfig QUOTACTL 5811da177e4SLinus Torvalds bool 5821da177e4SLinus Torvalds depends on XFS_QUOTA || QUOTA 5831da177e4SLinus Torvalds default y 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvaldsconfig DNOTIFY 5867e341fa1SAdrian Bunk bool "Dnotify support" 5871da177e4SLinus Torvalds default y 5881da177e4SLinus Torvalds help 5891da177e4SLinus Torvalds Dnotify is a directory-based per-fd file change notification system 5901da177e4SLinus Torvalds that uses signals to communicate events to user-space. There exist 5911da177e4SLinus Torvalds superior alternatives, but some applications may still rely on 5921da177e4SLinus Torvalds dnotify. 5931da177e4SLinus Torvalds 5947e341fa1SAdrian Bunk If unsure, say Y. 5951da177e4SLinus Torvalds 5961da177e4SLinus Torvaldsconfig AUTOFS_FS 5971da177e4SLinus Torvalds tristate "Kernel automounter support" 5981da177e4SLinus Torvalds help 5991da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 6001da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 6011da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 6021da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 6031da177e4SLinus Torvalds 6041da177e4SLinus Torvalds To use the automounter you need the user-space tools from the autofs 6051da177e4SLinus Torvalds package; you can find the location in <file:Documentation/Changes>. 6061da177e4SLinus Torvalds You also want to answer Y to "NFS file system support", below. 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds If you want to use the newer version of the automounter with more 6091da177e4SLinus Torvalds features, say N here and say Y to "Kernel automounter v4 support", 6101da177e4SLinus Torvalds below. 6111da177e4SLinus Torvalds 6121da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6131da177e4SLinus Torvalds called autofs. 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network, you 6161da177e4SLinus Torvalds probably do not need an automounter, and can say N here. 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvaldsconfig AUTOFS4_FS 6191da177e4SLinus Torvalds tristate "Kernel automounter version 4 support (also supports v3)" 6201da177e4SLinus Torvalds help 6211da177e4SLinus Torvalds The automounter is a tool to automatically mount remote file systems 6221da177e4SLinus Torvalds on demand. This implementation is partially kernel-based to reduce 6231da177e4SLinus Torvalds overhead in the already-mounted case; this is unlike the BSD 6241da177e4SLinus Torvalds automounter (amd), which is a pure user space daemon. 6251da177e4SLinus Torvalds 6261da177e4SLinus Torvalds To use the automounter you need the user-space tools from 6271da177e4SLinus Torvalds <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also 6281da177e4SLinus Torvalds want to answer Y to "NFS file system support", below. 6291da177e4SLinus Torvalds 6301da177e4SLinus Torvalds To compile this support as a module, choose M here: the module will be 6311da177e4SLinus Torvalds called autofs4. You will need to add "alias autofs autofs4" to your 6321da177e4SLinus Torvalds modules configuration file. 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds If you are not a part of a fairly large, distributed network or 6351da177e4SLinus Torvalds don't have a laptop which needs to dynamically reconfigure to the 6361da177e4SLinus Torvalds local network, you probably do not need an automounter, and can say 6371da177e4SLinus Torvalds N here. 6381da177e4SLinus Torvalds 63904578f17SMiklos Szerediconfig FUSE_FS 64004578f17SMiklos Szeredi tristate "Filesystem in Userspace support" 64104578f17SMiklos Szeredi help 64204578f17SMiklos Szeredi With FUSE it is possible to implement a fully functional filesystem 64304578f17SMiklos Szeredi in a userspace program. 64404578f17SMiklos Szeredi 64504578f17SMiklos Szeredi There's also companion library: libfuse. This library along with 64604578f17SMiklos Szeredi utilities is available from the FUSE homepage: 64704578f17SMiklos Szeredi <http://fuse.sourceforge.net/> 64804578f17SMiklos Szeredi 649909021eaSMiklos Szeredi See <file:Documentation/filesystems/fuse.txt> for more information. 650909021eaSMiklos Szeredi See <file:Documentation/Changes> for needed library/utility version. 651909021eaSMiklos Szeredi 65204578f17SMiklos Szeredi If you want to develop a userspace FS, or if you want to use 65304578f17SMiklos Szeredi a filesystem based on FUSE, answer Y or M. 65404578f17SMiklos Szeredi 655f2fbc6c2SRandy Dunlapconfig GENERIC_ACL 656f2fbc6c2SRandy Dunlap bool 657f2fbc6c2SRandy Dunlap select FS_POSIX_ACL 658f2fbc6c2SRandy Dunlap 6599361401eSDavid Howellsif BLOCK 6601da177e4SLinus Torvaldsmenu "CD-ROM/DVD Filesystems" 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvaldsconfig ISO9660_FS 6631da177e4SLinus Torvalds tristate "ISO 9660 CDROM file system support" 6641da177e4SLinus Torvalds help 6651da177e4SLinus Torvalds This is the standard file system used on CD-ROMs. It was previously 6661da177e4SLinus Torvalds known as "High Sierra File System" and is called "hsfs" on other 6671da177e4SLinus Torvalds Unix systems. The so-called Rock-Ridge extensions which allow for 6681da177e4SLinus Torvalds long Unix filenames and symbolic links are also supported by this 6691da177e4SLinus Torvalds driver. If you have a CD-ROM drive and want to do more with it than 6701da177e4SLinus Torvalds just listen to audio CDs and watch its LEDs, say Y (and read 6711da177e4SLinus Torvalds <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO, 6721da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>), thereby 6731da177e4SLinus Torvalds enlarging your kernel by about 27 KB; otherwise say N. 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 6761da177e4SLinus Torvalds module will be called isofs. 6771da177e4SLinus Torvalds 6781da177e4SLinus Torvaldsconfig JOLIET 6791da177e4SLinus Torvalds bool "Microsoft Joliet CDROM extensions" 6801da177e4SLinus Torvalds depends on ISO9660_FS 6811da177e4SLinus Torvalds select NLS 6821da177e4SLinus Torvalds help 6831da177e4SLinus Torvalds Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system 6841da177e4SLinus Torvalds which allows for long filenames in unicode format (unicode is the 6851da177e4SLinus Torvalds new 16 bit character code, successor to ASCII, which encodes the 6861da177e4SLinus Torvalds characters of almost all languages of the world; see 6871da177e4SLinus Torvalds <http://www.unicode.org/> for more information). Say Y here if you 6881da177e4SLinus Torvalds want to be able to read Joliet CD-ROMs under Linux. 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvaldsconfig ZISOFS 6911da177e4SLinus Torvalds bool "Transparent decompression extension" 6921da177e4SLinus Torvalds depends on ISO9660_FS 6931da177e4SLinus Torvalds select ZLIB_INFLATE 6941da177e4SLinus Torvalds help 6951da177e4SLinus Torvalds This is a Linux-specific extension to RockRidge which lets you store 6961da177e4SLinus Torvalds data in compressed form on a CD-ROM and have it transparently 6971da177e4SLinus Torvalds decompressed when the CD-ROM is accessed. See 6981da177e4SLinus Torvalds <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools 6991da177e4SLinus Torvalds necessary to create such a filesystem. Say Y here if you want to be 7001da177e4SLinus Torvalds able to read such compressed CD-ROMs. 7011da177e4SLinus Torvalds 7021da177e4SLinus Torvaldsconfig UDF_FS 7031da177e4SLinus Torvalds tristate "UDF file system support" 7041da177e4SLinus Torvalds help 7051da177e4SLinus Torvalds This is the new file system used on some CD-ROMs and DVDs. Say Y if 7061da177e4SLinus Torvalds you intend to mount DVD discs or CDRW's written in packet mode, or 7071da177e4SLinus Torvalds if written to by other UDF utilities, such as DirectCD. 7081da177e4SLinus Torvalds Please read <file:Documentation/filesystems/udf.txt>. 7091da177e4SLinus Torvalds 7101da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 7111da177e4SLinus Torvalds module will be called udf. 7121da177e4SLinus Torvalds 7131da177e4SLinus Torvalds If unsure, say N. 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvaldsconfig UDF_NLS 7161da177e4SLinus Torvalds bool 7171da177e4SLinus Torvalds default y 7181da177e4SLinus Torvalds depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y) 7191da177e4SLinus Torvalds 7201da177e4SLinus Torvaldsendmenu 7219361401eSDavid Howellsendif 7221da177e4SLinus Torvalds 7239361401eSDavid Howellsif BLOCK 7241da177e4SLinus Torvaldsmenu "DOS/FAT/NT Filesystems" 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvaldsconfig FAT_FS 7271da177e4SLinus Torvalds tristate 7281da177e4SLinus Torvalds select NLS 7291da177e4SLinus Torvalds help 7301da177e4SLinus Torvalds If you want to use one of the FAT-based file systems (the MS-DOS and 7311da177e4SLinus Torvalds VFAT (Windows 95) file systems), then you must say Y or M here 7321da177e4SLinus Torvalds to include FAT support. You will then be able to mount partitions or 7331da177e4SLinus Torvalds diskettes with FAT-based file systems and transparently access the 7341da177e4SLinus Torvalds files on them, i.e. MSDOS files will look and behave just like all 7351da177e4SLinus Torvalds other Unix files. 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds This FAT support is not a file system in itself, it only provides 7381da177e4SLinus Torvalds the foundation for the other file systems. You will have to say Y or 7391da177e4SLinus Torvalds M to at least one of "MSDOS fs support" or "VFAT fs support" in 7401da177e4SLinus Torvalds order to make use of it. 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds Another way to read and write MSDOS floppies and hard drive 7431da177e4SLinus Torvalds partitions from within Linux (but not transparently) is with the 7441da177e4SLinus Torvalds mtools ("man mtools") program suite. You don't need to say Y here in 7451da177e4SLinus Torvalds order to do that. 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds If you need to move large files on floppies between a DOS and a 7481da177e4SLinus Torvalds Linux box, say Y here, mount the floppy under Linux with an MSDOS 7491da177e4SLinus Torvalds file system and use GNU tar's M option. GNU tar is a program 7501da177e4SLinus Torvalds available for Unix and DOS ("man tar" or "info tar"). 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds The FAT support will enlarge your kernel by about 37 KB. If unsure, 7531da177e4SLinus Torvalds say Y. 7541da177e4SLinus Torvalds 7551da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 7561da177e4SLinus Torvalds fat. Note that if you compile the FAT support as a module, you 7571da177e4SLinus Torvalds cannot compile any of the FAT-based file systems into the kernel 7581da177e4SLinus Torvalds -- they will have to be modules as well. 7591da177e4SLinus Torvalds 7601da177e4SLinus Torvaldsconfig MSDOS_FS 7611da177e4SLinus Torvalds tristate "MSDOS fs support" 7621da177e4SLinus Torvalds select FAT_FS 7631da177e4SLinus Torvalds help 7641da177e4SLinus Torvalds This allows you to mount MSDOS partitions of your hard drive (unless 7651da177e4SLinus Torvalds they are compressed; to access compressed MSDOS partitions under 7661da177e4SLinus Torvalds Linux, you can either use the DOS emulator DOSEMU, described in the 7671da177e4SLinus Torvalds DOSEMU-HOWTO, available from 7681da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in 7691da177e4SLinus Torvalds <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you 7701da177e4SLinus Torvalds intend to use dosemu with a non-compressed MSDOS partition, say Y 7711da177e4SLinus Torvalds here) and MSDOS floppies. This means that file access becomes 7721da177e4SLinus Torvalds transparent, i.e. the MSDOS files look and behave just like all 7731da177e4SLinus Torvalds other Unix files. 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds If you have Windows 95 or Windows NT installed on your MSDOS 7761da177e4SLinus Torvalds partitions, you should use the VFAT file system (say Y to "VFAT fs 7771da177e4SLinus Torvalds support" below), or you will not be able to see the long filenames 7781da177e4SLinus Torvalds generated by Windows 95 / Windows NT. 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds This option will enlarge your kernel by about 7 KB. If unsure, 7811da177e4SLinus Torvalds answer Y. This will only work if you said Y to "DOS FAT fs support" 7821da177e4SLinus Torvalds as well. To compile this as a module, choose M here: the module will 7831da177e4SLinus Torvalds be called msdos. 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvaldsconfig VFAT_FS 7861da177e4SLinus Torvalds tristate "VFAT (Windows-95) fs support" 7871da177e4SLinus Torvalds select FAT_FS 7881da177e4SLinus Torvalds help 7891da177e4SLinus Torvalds This option provides support for normal Windows file systems with 7901da177e4SLinus Torvalds long filenames. That includes non-compressed FAT-based file systems 7911da177e4SLinus Torvalds used by Windows 95, Windows 98, Windows NT 4.0, and the Unix 7921da177e4SLinus Torvalds programs from the mtools package. 7931da177e4SLinus Torvalds 7941da177e4SLinus Torvalds The VFAT support enlarges your kernel by about 10 KB and it only 7951da177e4SLinus Torvalds works if you said Y to the "DOS FAT fs support" above. Please read 7961da177e4SLinus Torvalds the file <file:Documentation/filesystems/vfat.txt> for details. If 7971da177e4SLinus Torvalds unsure, say Y. 7981da177e4SLinus Torvalds 7991da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 8001da177e4SLinus Torvalds vfat. 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvaldsconfig FAT_DEFAULT_CODEPAGE 8031da177e4SLinus Torvalds int "Default codepage for FAT" 8041da177e4SLinus Torvalds depends on MSDOS_FS || VFAT_FS 8051da177e4SLinus Torvalds default 437 8061da177e4SLinus Torvalds help 8071da177e4SLinus Torvalds This option should be set to the codepage of your FAT filesystems. 8081da177e4SLinus Torvalds It can be overridden with the "codepage" mount option. 8091da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8101da177e4SLinus Torvalds 8111da177e4SLinus Torvaldsconfig FAT_DEFAULT_IOCHARSET 8121da177e4SLinus Torvalds string "Default iocharset for FAT" 8131da177e4SLinus Torvalds depends on VFAT_FS 8141da177e4SLinus Torvalds default "iso8859-1" 8151da177e4SLinus Torvalds help 8161da177e4SLinus Torvalds Set this to the default input/output character set you'd 8171da177e4SLinus Torvalds like FAT to use. It should probably match the character set 8181da177e4SLinus Torvalds that most of your FAT filesystems use, and can be overridden 8191da177e4SLinus Torvalds with the "iocharset" mount option for FAT filesystems. 8201da177e4SLinus Torvalds Note that "utf8" is not recommended for FAT filesystems. 8211da177e4SLinus Torvalds If unsure, you shouldn't set "utf8" here. 8221da177e4SLinus Torvalds See <file:Documentation/filesystems/vfat.txt> for more information. 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvaldsconfig NTFS_FS 8251da177e4SLinus Torvalds tristate "NTFS file system support" 8261da177e4SLinus Torvalds select NLS 8271da177e4SLinus Torvalds help 8281da177e4SLinus Torvalds NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds Saying Y or M here enables read support. There is partial, but 8311da177e4SLinus Torvalds safe, write support available. For write support you must also 8321da177e4SLinus Torvalds say Y to "NTFS write support" below. 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds There are also a number of user-space tools available, called 8351da177e4SLinus Torvalds ntfsprogs. These include ntfsundelete and ntfsresize, that work 8361da177e4SLinus Torvalds without NTFS support enabled in the kernel. 8371da177e4SLinus Torvalds 8381da177e4SLinus Torvalds This is a rewrite from scratch of Linux NTFS support and replaced 8391da177e4SLinus Torvalds the old NTFS code starting with Linux 2.5.11. A backport to 8401da177e4SLinus Torvalds the Linux 2.4 kernel series is separately available as a patch 8411da177e4SLinus Torvalds from the project web site. 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds For more information see <file:Documentation/filesystems/ntfs.txt> 8441da177e4SLinus Torvalds and <http://linux-ntfs.sourceforge.net/>. 8451da177e4SLinus Torvalds 8461da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 8471da177e4SLinus Torvalds module will be called ntfs. 8481da177e4SLinus Torvalds 8491da177e4SLinus Torvalds If you are not using Windows NT, 2000, XP or 2003 in addition to 8501da177e4SLinus Torvalds Linux on your computer it is safe to say N. 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvaldsconfig NTFS_DEBUG 8531da177e4SLinus Torvalds bool "NTFS debugging support" 8541da177e4SLinus Torvalds depends on NTFS_FS 8551da177e4SLinus Torvalds help 8561da177e4SLinus Torvalds If you are experiencing any problems with the NTFS file system, say 8571da177e4SLinus Torvalds Y here. This will result in additional consistency checks to be 8581da177e4SLinus Torvalds performed by the driver as well as additional debugging messages to 8591da177e4SLinus Torvalds be written to the system log. Note that debugging messages are 8601da177e4SLinus Torvalds disabled by default. To enable them, supply the option debug_msgs=1 8611da177e4SLinus Torvalds at the kernel command line when booting the kernel or as an option 8621da177e4SLinus Torvalds to insmod when loading the ntfs module. Once the driver is active, 8631da177e4SLinus Torvalds you can enable debugging messages by doing (as root): 8641da177e4SLinus Torvalds echo 1 > /proc/sys/fs/ntfs-debug 8651da177e4SLinus Torvalds Replacing the "1" with "0" would disable debug messages. 8661da177e4SLinus Torvalds 8671da177e4SLinus Torvalds If you leave debugging messages disabled, this results in little 8681da177e4SLinus Torvalds overhead, but enabling debug messages results in very significant 8691da177e4SLinus Torvalds slowdown of the system. 8701da177e4SLinus Torvalds 8711da177e4SLinus Torvalds When reporting bugs, please try to have available a full dump of 8721da177e4SLinus Torvalds debugging messages while the misbehaviour was occurring. 8731da177e4SLinus Torvalds 8741da177e4SLinus Torvaldsconfig NTFS_RW 8751da177e4SLinus Torvalds bool "NTFS write support" 8761da177e4SLinus Torvalds depends on NTFS_FS 8771da177e4SLinus Torvalds help 8781da177e4SLinus Torvalds This enables the partial, but safe, write support in the NTFS driver. 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds The only supported operation is overwriting existing files, without 8811da177e4SLinus Torvalds changing the file length. No file or directory creation, deletion or 8821da177e4SLinus Torvalds renaming is possible. Note only non-resident files can be written to 8831da177e4SLinus Torvalds so you may find that some very small files (<500 bytes or so) cannot 8841da177e4SLinus Torvalds be written to. 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds While we cannot guarantee that it will not damage any data, we have 8871da177e4SLinus Torvalds so far not received a single report where the driver would have 8881da177e4SLinus Torvalds damaged someones data so we assume it is perfectly safe to use. 8891da177e4SLinus Torvalds 8901da177e4SLinus Torvalds Note: While write support is safe in this version (a rewrite from 8911da177e4SLinus Torvalds scratch of the NTFS support), it should be noted that the old NTFS 8921da177e4SLinus Torvalds write support, included in Linux 2.5.10 and before (since 1997), 8931da177e4SLinus Torvalds is not safe. 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds This is currently useful with TopologiLinux. TopologiLinux is run 8961da177e4SLinus Torvalds on top of any DOS/Microsoft Windows system without partitioning your 8971da177e4SLinus Torvalds hard disk. Unlike other Linux distributions TopologiLinux does not 8981da177e4SLinus Torvalds need its own partition. For more information see 8991da177e4SLinus Torvalds <http://topologi-linux.sourceforge.net/> 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds It is perfectly safe to say N here. 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvaldsendmenu 9049361401eSDavid Howellsendif 9051da177e4SLinus Torvalds 9061da177e4SLinus Torvaldsmenu "Pseudo filesystems" 9071da177e4SLinus Torvalds 9081da177e4SLinus Torvaldsconfig PROC_FS 90969755652SH. Peter Anvin bool "/proc file system support" if EMBEDDED 91069755652SH. Peter Anvin default y 9111da177e4SLinus Torvalds help 9121da177e4SLinus Torvalds This is a virtual file system providing information about the status 9131da177e4SLinus Torvalds of the system. "Virtual" means that it doesn't take up any space on 9141da177e4SLinus Torvalds your hard disk: the files are created on the fly by the kernel when 9151da177e4SLinus Torvalds you try to access them. Also, you cannot read the files with older 9161da177e4SLinus Torvalds version of the program less: you need to use more or cat. 9171da177e4SLinus Torvalds 9181da177e4SLinus Torvalds It's totally cool; for example, "cat /proc/interrupts" gives 9191da177e4SLinus Torvalds information about what the different IRQs are used for at the moment 9201da177e4SLinus Torvalds (there is a small number of Interrupt ReQuest lines in your computer 9211da177e4SLinus Torvalds that are used by the attached devices to gain the CPU's attention -- 9221da177e4SLinus Torvalds often a source of trouble if two devices are mistakenly configured 9231da177e4SLinus Torvalds to use the same IRQ). The program procinfo to display some 9241da177e4SLinus Torvalds information about your system gathered from the /proc file system. 9251da177e4SLinus Torvalds 9261da177e4SLinus Torvalds Before you can use the /proc file system, it has to be mounted, 9271da177e4SLinus Torvalds meaning it has to be given a location in the directory hierarchy. 9281da177e4SLinus Torvalds That location should be /proc. A command such as "mount -t proc proc 9291da177e4SLinus Torvalds /proc" or the equivalent line in /etc/fstab does the job. 9301da177e4SLinus Torvalds 9311da177e4SLinus Torvalds The /proc file system is explained in the file 9321da177e4SLinus Torvalds <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage 9331da177e4SLinus Torvalds ("man 5 proc"). 9341da177e4SLinus Torvalds 9351da177e4SLinus Torvalds This option will enlarge your kernel by about 67 KB. Several 9361da177e4SLinus Torvalds programs depend on this, so everyone should say Y here. 9371da177e4SLinus Torvalds 9381da177e4SLinus Torvaldsconfig PROC_KCORE 9391da177e4SLinus Torvalds bool "/proc/kcore support" if !ARM 9401da177e4SLinus Torvalds depends on PROC_FS && MMU 9411da177e4SLinus Torvalds 942666bfddbSVivek Goyalconfig PROC_VMCORE 943666bfddbSVivek Goyal bool "/proc/vmcore support (EXPERIMENTAL)" 94405970d47SManeesh Soni depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP 94568250ba5SVivek Goyal default y 946666bfddbSVivek Goyal help 947666bfddbSVivek Goyal Exports the dump image of crashed kernel in ELF format. 948666bfddbSVivek Goyal 949b89a8171SEric W. Biedermanconfig PROC_SYSCTL 950b89a8171SEric W. Biederman bool "Sysctl support (/proc/sys)" if EMBEDDED 951b89a8171SEric W. Biederman depends on PROC_FS 952b89a8171SEric W. Biederman select SYSCTL 953b89a8171SEric W. Biederman default y 954b89a8171SEric W. Biederman ---help--- 955b89a8171SEric W. Biederman The sysctl interface provides a means of dynamically changing 956b89a8171SEric W. Biederman certain kernel parameters and variables on the fly without requiring 957b89a8171SEric W. Biederman a recompile of the kernel or reboot of the system. The primary 958b89a8171SEric W. Biederman interface is through /proc/sys. If you say Y here a tree of 959b89a8171SEric W. Biederman modifiable sysctl entries will be generated beneath the 960b89a8171SEric W. Biederman /proc/sys directory. They are explained in the files 961b89a8171SEric W. Biederman in <file:Documentation/sysctl/>. Note that enabling this 962b89a8171SEric W. Biederman option will enlarge the kernel by at least 8 KB. 963b89a8171SEric W. Biederman 964b89a8171SEric W. Biederman As it is generally a good thing, you should say Y here unless 965b89a8171SEric W. Biederman building a kernel for install/rescue disks or your system is very 966b89a8171SEric W. Biederman limited in memory. 967b89a8171SEric W. Biederman 9681da177e4SLinus Torvaldsconfig SYSFS 9691da177e4SLinus Torvalds bool "sysfs file system support" if EMBEDDED 9701da177e4SLinus Torvalds default y 9711da177e4SLinus Torvalds help 9721da177e4SLinus Torvalds The sysfs filesystem is a virtual filesystem that the kernel uses to 9731da177e4SLinus Torvalds export internal kernel objects, their attributes, and their 9741da177e4SLinus Torvalds relationships to one another. 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds Users can use sysfs to ascertain useful information about the running 9771da177e4SLinus Torvalds kernel, such as the devices the kernel has discovered on each bus and 9781da177e4SLinus Torvalds which driver each is bound to. sysfs can also be used to tune devices 9791da177e4SLinus Torvalds and other kernel subsystems. 9801da177e4SLinus Torvalds 9811da177e4SLinus Torvalds Some system agents rely on the information in sysfs to operate. 9821da177e4SLinus Torvalds /sbin/hotplug uses device and object attributes in sysfs to assist in 98303a67a46SJan Engelhardt delegating policy decisions, like persistently naming devices. 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds sysfs is currently used by the block subsystem to mount the root 9861da177e4SLinus Torvalds partition. If sysfs is disabled you must specify the boot device on 9871da177e4SLinus Torvalds the kernel boot command line via its major and minor numbers. For 9881da177e4SLinus Torvalds example, "root=03:01" for /dev/hda1. 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds Designers of embedded systems may wish to say N here to conserve space. 9911da177e4SLinus Torvalds 9921da177e4SLinus Torvaldsconfig TMPFS 9931da177e4SLinus Torvalds bool "Virtual memory file system support (former shm fs)" 9941da177e4SLinus Torvalds help 9951da177e4SLinus Torvalds Tmpfs is a file system which keeps all files in virtual memory. 9961da177e4SLinus Torvalds 9971da177e4SLinus Torvalds Everything in tmpfs is temporary in the sense that no files will be 9981da177e4SLinus Torvalds created on your hard drive. The files live in memory and swap 9991da177e4SLinus Torvalds space. If you unmount a tmpfs instance, everything stored therein is 10001da177e4SLinus Torvalds lost. 10011da177e4SLinus Torvalds 10021da177e4SLinus Torvalds See <file:Documentation/filesystems/tmpfs.txt> for details. 10031da177e4SLinus Torvalds 100439f0247dSAndreas Gruenbacherconfig TMPFS_POSIX_ACL 100539f0247dSAndreas Gruenbacher bool "Tmpfs POSIX Access Control Lists" 100639f0247dSAndreas Gruenbacher depends on TMPFS 100739f0247dSAndreas Gruenbacher select GENERIC_ACL 100839f0247dSAndreas Gruenbacher help 100939f0247dSAndreas Gruenbacher POSIX Access Control Lists (ACLs) support permissions for users and 101039f0247dSAndreas Gruenbacher groups beyond the owner/group/world scheme. 101139f0247dSAndreas Gruenbacher 101239f0247dSAndreas Gruenbacher To learn more about Access Control Lists, visit the POSIX ACLs for 101339f0247dSAndreas Gruenbacher Linux website <http://acl.bestbits.at/>. 101439f0247dSAndreas Gruenbacher 101539f0247dSAndreas Gruenbacher If you don't know what Access Control Lists are, say N. 101639f0247dSAndreas Gruenbacher 10171da177e4SLinus Torvaldsconfig HUGETLBFS 10181da177e4SLinus Torvalds bool "HugeTLB file system support" 1019dd950587SPaul Mundt depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN 1020dda27d1aSArthur Othieno help 1021dda27d1aSArthur Othieno hugetlbfs is a filesystem backing for HugeTLB pages, based on 1022dda27d1aSArthur Othieno ramfs. For architectures that support it, say Y here and read 1023dda27d1aSArthur Othieno <file:Documentation/vm/hugetlbpage.txt> for details. 1024dda27d1aSArthur Othieno 1025dda27d1aSArthur Othieno If unsure, say N. 10261da177e4SLinus Torvalds 10271da177e4SLinus Torvaldsconfig HUGETLB_PAGE 10281da177e4SLinus Torvalds def_bool HUGETLBFS 10291da177e4SLinus Torvalds 10307063fbf2SJoel Beckerconfig CONFIGFS_FS 10317063fbf2SJoel Becker tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)" 103265714b91SAdrian Bunk depends on SYSFS && EXPERIMENTAL 10337063fbf2SJoel Becker help 10347063fbf2SJoel Becker configfs is a ram-based filesystem that provides the converse 10357063fbf2SJoel Becker of sysfs's functionality. Where sysfs is a filesystem-based 10367063fbf2SJoel Becker view of kernel objects, configfs is a filesystem-based manager 10377063fbf2SJoel Becker of kernel objects, or config_items. 10387063fbf2SJoel Becker 10397063fbf2SJoel Becker Both sysfs and configfs can and should exist together on the 10407063fbf2SJoel Becker same system. One is not a replacement for the other. 10417063fbf2SJoel Becker 10421da177e4SLinus Torvaldsendmenu 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvaldsmenu "Miscellaneous filesystems" 10451da177e4SLinus Torvalds 10461da177e4SLinus Torvaldsconfig ADFS_FS 10471da177e4SLinus Torvalds tristate "ADFS file system support (EXPERIMENTAL)" 10489361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10491da177e4SLinus Torvalds help 10501da177e4SLinus Torvalds The Acorn Disc Filing System is the standard file system of the 10511da177e4SLinus Torvalds RiscOS operating system which runs on Acorn's ARM-based Risc PC 10521da177e4SLinus Torvalds systems and the Acorn Archimedes range of machines. If you say Y 10531da177e4SLinus Torvalds here, Linux will be able to read from ADFS partitions on hard drives 10541da177e4SLinus Torvalds and from ADFS-formatted floppy discs. If you also want to be able to 10551da177e4SLinus Torvalds write to those devices, say Y to "ADFS write support" below. 10561da177e4SLinus Torvalds 10571da177e4SLinus Torvalds The ADFS partition should be the first partition (i.e., 10581da177e4SLinus Torvalds /dev/[hs]d?1) on each of your drives. Please read the file 10591da177e4SLinus Torvalds <file:Documentation/filesystems/adfs.txt> for further details. 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvalds To compile this code as a module, choose M here: the module will be 10621da177e4SLinus Torvalds called adfs. 10631da177e4SLinus Torvalds 10641da177e4SLinus Torvalds If unsure, say N. 10651da177e4SLinus Torvalds 10661da177e4SLinus Torvaldsconfig ADFS_FS_RW 10671da177e4SLinus Torvalds bool "ADFS write support (DANGEROUS)" 10681da177e4SLinus Torvalds depends on ADFS_FS 10691da177e4SLinus Torvalds help 10701da177e4SLinus Torvalds If you say Y here, you will be able to write to ADFS partitions on 10711da177e4SLinus Torvalds hard drives and ADFS-formatted floppy disks. This is experimental 10721da177e4SLinus Torvalds codes, so if you're unsure, say N. 10731da177e4SLinus Torvalds 10741da177e4SLinus Torvaldsconfig AFFS_FS 10751da177e4SLinus Torvalds tristate "Amiga FFS file system support (EXPERIMENTAL)" 10769361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 10771da177e4SLinus Torvalds help 10781da177e4SLinus Torvalds The Fast File System (FFS) is the common file system used on hard 10791da177e4SLinus Torvalds disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y 10801da177e4SLinus Torvalds if you want to be able to read and write files from and to an Amiga 10811da177e4SLinus Torvalds FFS partition on your hard drive. Amiga floppies however cannot be 10821da177e4SLinus Torvalds read with this driver due to an incompatibility of the floppy 10831da177e4SLinus Torvalds controller used in an Amiga and the standard floppy controller in 10841da177e4SLinus Torvalds PCs and workstations. Read <file:Documentation/filesystems/affs.txt> 10851da177e4SLinus Torvalds and <file:fs/affs/Changes>. 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds With this driver you can also mount disk files used by Bernd 10881da177e4SLinus Torvalds Schmidt's Un*X Amiga Emulator 10891da177e4SLinus Torvalds (<http://www.freiburg.linux.de/~uae/>). 10901da177e4SLinus Torvalds If you want to do this, you will also need to say Y or M to "Loop 10911da177e4SLinus Torvalds device support", above. 10921da177e4SLinus Torvalds 10931da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 10941da177e4SLinus Torvalds module will be called affs. If unsure, say N. 10951da177e4SLinus Torvalds 1096237fead6SMichael Halcrowconfig ECRYPT_FS 1097237fead6SMichael Halcrow tristate "eCrypt filesystem layer support (EXPERIMENTAL)" 109888b4a07eSMichael Halcrow depends on EXPERIMENTAL && KEYS && CRYPTO && NET 1099237fead6SMichael Halcrow help 1100237fead6SMichael Halcrow Encrypted filesystem that operates on the VFS layer. See 1101e403149cSDirk Hohndel <file:Documentation/filesystems/ecryptfs.txt> to learn more about 1102237fead6SMichael Halcrow eCryptfs. Userspace components are required and can be 1103237fead6SMichael Halcrow obtained from <http://ecryptfs.sf.net>. 1104237fead6SMichael Halcrow 1105237fead6SMichael Halcrow To compile this file system support as a module, choose M here: the 1106237fead6SMichael Halcrow module will be called ecryptfs. 1107237fead6SMichael Halcrow 11081da177e4SLinus Torvaldsconfig HFS_FS 11091da177e4SLinus Torvalds tristate "Apple Macintosh file system support (EXPERIMENTAL)" 11109361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 1111878129a3SLennert Buytenhek select NLS 11121da177e4SLinus Torvalds help 11131da177e4SLinus Torvalds If you say Y here, you will be able to mount Macintosh-formatted 11141da177e4SLinus Torvalds floppy disks and hard drive partitions with full read-write access. 11151da177e4SLinus Torvalds Please read <file:fs/hfs/HFS.txt> to learn about the available mount 11161da177e4SLinus Torvalds options. 11171da177e4SLinus Torvalds 11181da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 11191da177e4SLinus Torvalds module will be called hfs. 11201da177e4SLinus Torvalds 11211da177e4SLinus Torvaldsconfig HFSPLUS_FS 11221da177e4SLinus Torvalds tristate "Apple Extended HFS file system support" 11239361401eSDavid Howells depends on BLOCK 11241da177e4SLinus Torvalds select NLS 11251da177e4SLinus Torvalds select NLS_UTF8 11261da177e4SLinus Torvalds help 11271da177e4SLinus Torvalds If you say Y here, you will be able to mount extended format 11281da177e4SLinus Torvalds Macintosh-formatted hard drive partitions with full read-write access. 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvalds This file system is often called HFS+ and was introduced with 11311da177e4SLinus Torvalds MacOS 8. It includes all Mac specific filesystem data such as 11321da177e4SLinus Torvalds data forks and creator codes, but it also has several UNIX 11331da177e4SLinus Torvalds style features such as file ownership and permissions. 11341da177e4SLinus Torvalds 11351da177e4SLinus Torvaldsconfig BEFS_FS 11361da177e4SLinus Torvalds tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)" 11379361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11381da177e4SLinus Torvalds select NLS 11391da177e4SLinus Torvalds help 11401da177e4SLinus Torvalds The BeOS File System (BeFS) is the native file system of Be, Inc's 11411da177e4SLinus Torvalds BeOS. Notable features include support for arbitrary attributes 11423cb2fcccSMatt LaPlante on files and directories, and database-like indices on selected 11431da177e4SLinus Torvalds attributes. (Also note that this driver doesn't make those features 11441da177e4SLinus Torvalds available at this time). It is a 64 bit filesystem, so it supports 114544c09201SMatt LaPlante extremely large volumes and files. 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds If you use this filesystem, you should also say Y to at least one 11481da177e4SLinus Torvalds of the NLS (native language support) options below. 11491da177e4SLinus Torvalds 11501da177e4SLinus Torvalds If you don't know what this is about, say N. 11511da177e4SLinus Torvalds 11521da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 11531da177e4SLinus Torvalds called befs. 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvaldsconfig BEFS_DEBUG 11561da177e4SLinus Torvalds bool "Debug BeFS" 11571da177e4SLinus Torvalds depends on BEFS_FS 11581da177e4SLinus Torvalds help 11591da177e4SLinus Torvalds If you say Y here, you can use the 'debug' mount option to enable 11601da177e4SLinus Torvalds debugging output from the driver. 11611da177e4SLinus Torvalds 11621da177e4SLinus Torvaldsconfig BFS_FS 11631da177e4SLinus Torvalds tristate "BFS file system support (EXPERIMENTAL)" 11649361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11651da177e4SLinus Torvalds help 11661da177e4SLinus Torvalds Boot File System (BFS) is a file system used under SCO UnixWare to 11671da177e4SLinus Torvalds allow the bootloader access to the kernel image and other important 11681da177e4SLinus Torvalds files during the boot process. It is usually mounted under /stand 11691da177e4SLinus Torvalds and corresponds to the slice marked as "STAND" in the UnixWare 11701da177e4SLinus Torvalds partition. You should say Y if you want to read or write the files 11711da177e4SLinus Torvalds on your /stand slice from within Linux. You then also need to say Y 11721da177e4SLinus Torvalds to "UnixWare slices support", below. More information about the BFS 11731da177e4SLinus Torvalds file system is contained in the file 11741da177e4SLinus Torvalds <file:Documentation/filesystems/bfs.txt>. 11751da177e4SLinus Torvalds 11761da177e4SLinus Torvalds If you don't know what this is about, say N. 11771da177e4SLinus Torvalds 11781da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 11791da177e4SLinus Torvalds bfs. Note that the file system of your root partition (the one 11801da177e4SLinus Torvalds containing the directory /) cannot be compiled as a module. 11811da177e4SLinus Torvalds 11821da177e4SLinus Torvalds 11831da177e4SLinus Torvalds 11841da177e4SLinus Torvaldsconfig EFS_FS 11851da177e4SLinus Torvalds tristate "EFS file system support (read only) (EXPERIMENTAL)" 11869361401eSDavid Howells depends on BLOCK && EXPERIMENTAL 11871da177e4SLinus Torvalds help 11881da177e4SLinus Torvalds EFS is an older file system used for non-ISO9660 CD-ROMs and hard 11891da177e4SLinus Torvalds disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer 11901da177e4SLinus Torvalds uses the XFS file system for hard disk partitions however). 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvalds This implementation only offers read-only access. If you don't know 11931da177e4SLinus Torvalds what all this is about, it's safe to say N. For more information 11941da177e4SLinus Torvalds about EFS see its home page at <http://aeschi.ch.eu.org/efs/>. 11951da177e4SLinus Torvalds 11961da177e4SLinus Torvalds To compile the EFS file system support as a module, choose M here: the 11971da177e4SLinus Torvalds module will be called efs. 11981da177e4SLinus Torvalds 11991da177e4SLinus Torvaldsconfig JFFS2_FS 12001da177e4SLinus Torvalds tristate "Journalling Flash File System v2 (JFFS2) support" 12011da177e4SLinus Torvalds select CRC32 12021da177e4SLinus Torvalds depends on MTD 12031da177e4SLinus Torvalds help 12041da177e4SLinus Torvalds JFFS2 is the second generation of the Journalling Flash File System 12051da177e4SLinus Torvalds for use on diskless embedded devices. It provides improved wear 12061da177e4SLinus Torvalds levelling, compression and support for hard links. You cannot use 12071da177e4SLinus Torvalds this on normal block devices, only on 'MTD' devices. 12081da177e4SLinus Torvalds 12091da177e4SLinus Torvalds Further information on the design and implementation of JFFS2 is 12101da177e4SLinus Torvalds available at <http://sources.redhat.com/jffs2/>. 12111da177e4SLinus Torvalds 12121da177e4SLinus Torvaldsconfig JFFS2_FS_DEBUG 12131da177e4SLinus Torvalds int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)" 12141da177e4SLinus Torvalds depends on JFFS2_FS 12151da177e4SLinus Torvalds default "0" 12161da177e4SLinus Torvalds help 12171da177e4SLinus Torvalds This controls the amount of debugging messages produced by the JFFS2 12181da177e4SLinus Torvalds code. Set it to zero for use in production systems. For evaluation, 12191da177e4SLinus Torvalds testing and debugging, it's advisable to set it to one. This will 12201da177e4SLinus Torvalds enable a few assertions and will print debugging messages at the 12211da177e4SLinus Torvalds KERN_DEBUG loglevel, where they won't normally be visible. Level 2 12221da177e4SLinus Torvalds is unlikely to be useful - it enables extra debugging in certain 12231da177e4SLinus Torvalds areas which at one point needed debugging, but when the bugs were 12241da177e4SLinus Torvalds located and fixed, the detailed messages were relegated to level 2. 12251da177e4SLinus Torvalds 12261da177e4SLinus Torvalds If reporting bugs, please try to have available a full dump of the 12271da177e4SLinus Torvalds messages at debug level 1 while the misbehaviour was occurring. 12281da177e4SLinus Torvalds 12292ba72cb7SDavid Woodhouseconfig JFFS2_FS_WRITEBUFFER 12302ba72cb7SDavid Woodhouse bool "JFFS2 write-buffering support" 1231aa98d7cfSKaiGai Kohei depends on JFFS2_FS 12322ba72cb7SDavid Woodhouse default y 12332ba72cb7SDavid Woodhouse help 12342ba72cb7SDavid Woodhouse This enables the write-buffering support in JFFS2. 12352ba72cb7SDavid Woodhouse 12362ba72cb7SDavid Woodhouse This functionality is required to support JFFS2 on the following 12372ba72cb7SDavid Woodhouse types of flash devices: 12382ba72cb7SDavid Woodhouse - NAND flash 12392ba72cb7SDavid Woodhouse - NOR flash with transparent ECC 12402ba72cb7SDavid Woodhouse - DataFlash 12412ba72cb7SDavid Woodhouse 1242a6bc432eSDavid Woodhouseconfig JFFS2_FS_WBUF_VERIFY 1243a6bc432eSDavid Woodhouse bool "Verify JFFS2 write-buffer reads" 1244a6bc432eSDavid Woodhouse depends on JFFS2_FS_WRITEBUFFER 1245a6bc432eSDavid Woodhouse default n 1246a6bc432eSDavid Woodhouse help 1247a6bc432eSDavid Woodhouse This causes JFFS2 to read back every page written through the 1248a6bc432eSDavid Woodhouse write-buffer, and check for errors. 1249a6bc432eSDavid Woodhouse 12502ba72cb7SDavid Woodhouseconfig JFFS2_SUMMARY 12512ba72cb7SDavid Woodhouse bool "JFFS2 summary support (EXPERIMENTAL)" 12522ba72cb7SDavid Woodhouse depends on JFFS2_FS && EXPERIMENTAL 12532ba72cb7SDavid Woodhouse default n 12542ba72cb7SDavid Woodhouse help 12552ba72cb7SDavid Woodhouse This feature makes it possible to use summary information 12562ba72cb7SDavid Woodhouse for faster filesystem mount. 12572ba72cb7SDavid Woodhouse 12582ba72cb7SDavid Woodhouse The summary information can be inserted into a filesystem image 12592ba72cb7SDavid Woodhouse by the utility 'sumtool'. 12602ba72cb7SDavid Woodhouse 12612ba72cb7SDavid Woodhouse If unsure, say 'N'. 12622ba72cb7SDavid Woodhouse 12632ba72cb7SDavid Woodhouseconfig JFFS2_FS_XATTR 12642ba72cb7SDavid Woodhouse bool "JFFS2 XATTR support (EXPERIMENTAL)" 126504510deeSKaiGai Kohei depends on JFFS2_FS && EXPERIMENTAL 1266aa98d7cfSKaiGai Kohei default n 1267aa98d7cfSKaiGai Kohei help 1268aa98d7cfSKaiGai Kohei Extended attributes are name:value pairs associated with inodes by 1269aa98d7cfSKaiGai Kohei the kernel or by users (see the attr(5) manual page, or visit 1270aa98d7cfSKaiGai Kohei <http://acl.bestbits.at/> for details). 1271aa98d7cfSKaiGai Kohei 1272aa98d7cfSKaiGai Kohei If unsure, say N. 1273aa98d7cfSKaiGai Kohei 1274aa98d7cfSKaiGai Koheiconfig JFFS2_FS_POSIX_ACL 1275aa98d7cfSKaiGai Kohei bool "JFFS2 POSIX Access Control Lists" 1276aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1277aa98d7cfSKaiGai Kohei default y 1278aa98d7cfSKaiGai Kohei select FS_POSIX_ACL 1279aa98d7cfSKaiGai Kohei help 1280aa98d7cfSKaiGai Kohei Posix Access Control Lists (ACLs) support permissions for users and 1281aa98d7cfSKaiGai Kohei groups beyond the owner/group/world scheme. 1282aa98d7cfSKaiGai Kohei 1283aa98d7cfSKaiGai Kohei To learn more about Access Control Lists, visit the Posix ACLs for 1284aa98d7cfSKaiGai Kohei Linux website <http://acl.bestbits.at/>. 1285aa98d7cfSKaiGai Kohei 1286aa98d7cfSKaiGai Kohei If you don't know what Access Control Lists are, say N 1287aa98d7cfSKaiGai Kohei 1288aa98d7cfSKaiGai Koheiconfig JFFS2_FS_SECURITY 1289aa98d7cfSKaiGai Kohei bool "JFFS2 Security Labels" 1290aa98d7cfSKaiGai Kohei depends on JFFS2_FS_XATTR 1291aa98d7cfSKaiGai Kohei default y 1292aa98d7cfSKaiGai Kohei help 1293aa98d7cfSKaiGai Kohei Security labels support alternative access control models 1294aa98d7cfSKaiGai Kohei implemented by security modules like SELinux. This option 1295aa98d7cfSKaiGai Kohei enables an extended attribute handler for file security 1296aa98d7cfSKaiGai Kohei labels in the jffs2 filesystem. 1297aa98d7cfSKaiGai Kohei 1298aa98d7cfSKaiGai Kohei If you are not using a security module that requires using 1299aa98d7cfSKaiGai Kohei extended attributes for file security labels, say N. 1300aa98d7cfSKaiGai Kohei 13011da177e4SLinus Torvaldsconfig JFFS2_COMPRESSION_OPTIONS 13021da177e4SLinus Torvalds bool "Advanced compression options for JFFS2" 13031da177e4SLinus Torvalds depends on JFFS2_FS 13041da177e4SLinus Torvalds default n 13051da177e4SLinus Torvalds help 13061da177e4SLinus Torvalds Enabling this option allows you to explicitly choose which 13071da177e4SLinus Torvalds compression modules, if any, are enabled in JFFS2. Removing 13081da177e4SLinus Torvalds compressors and mean you cannot read existing file systems, 13091da177e4SLinus Torvalds and enabling experimental compressors can mean that you 13101da177e4SLinus Torvalds write a file system which cannot be read by a standard kernel. 13111da177e4SLinus Torvalds 13121da177e4SLinus Torvalds If unsure, you should _definitely_ say 'N'. 13131da177e4SLinus Torvalds 13141da177e4SLinus Torvaldsconfig JFFS2_ZLIB 13151da177e4SLinus Torvalds bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS 13161da177e4SLinus Torvalds select ZLIB_INFLATE 13171da177e4SLinus Torvalds select ZLIB_DEFLATE 13181da177e4SLinus Torvalds depends on JFFS2_FS 13191da177e4SLinus Torvalds default y 13201da177e4SLinus Torvalds help 13211da177e4SLinus Torvalds Zlib is designed to be a free, general-purpose, legally unencumbered, 13221da177e4SLinus Torvalds lossless data-compression library for use on virtually any computer 13231da177e4SLinus Torvalds hardware and operating system. See <http://www.gzip.org/zlib/> for 13241da177e4SLinus Torvalds further information. 13251da177e4SLinus Torvalds 13261da177e4SLinus Torvalds Say 'Y' if unsure. 13271da177e4SLinus Torvalds 1328c799aca3SRichard Purdieconfig JFFS2_LZO 1329c799aca3SRichard Purdie bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS 1330c799aca3SRichard Purdie select LZO_COMPRESS 1331c799aca3SRichard Purdie select LZO_DECOMPRESS 1332c799aca3SRichard Purdie depends on JFFS2_FS 13333ca135e1SDavid Woodhouse default n 1334c799aca3SRichard Purdie help 1335c799aca3SRichard Purdie minilzo-based compression. Generally works better than Zlib. 1336c799aca3SRichard Purdie 13373ca135e1SDavid Woodhouse This feature was added in July, 2007. Say 'N' if you need 13383ca135e1SDavid Woodhouse compatibility with older bootloaders or kernels. 1339c799aca3SRichard Purdie 13401da177e4SLinus Torvaldsconfig JFFS2_RTIME 13411da177e4SLinus Torvalds bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS 13421da177e4SLinus Torvalds depends on JFFS2_FS 13431da177e4SLinus Torvalds default y 13441da177e4SLinus Torvalds help 13451da177e4SLinus Torvalds Rtime does manage to recompress already-compressed data. Say 'Y' if unsure. 13461da177e4SLinus Torvalds 13471da177e4SLinus Torvaldsconfig JFFS2_RUBIN 13481da177e4SLinus Torvalds bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS 13491da177e4SLinus Torvalds depends on JFFS2_FS 13501da177e4SLinus Torvalds default n 13511da177e4SLinus Torvalds help 13521da177e4SLinus Torvalds RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure. 13531da177e4SLinus Torvalds 13541da177e4SLinus Torvaldschoice 13551da177e4SLinus Torvalds prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS 13561da177e4SLinus Torvalds default JFFS2_CMODE_PRIORITY 13571da177e4SLinus Torvalds depends on JFFS2_FS 13581da177e4SLinus Torvalds help 13591da177e4SLinus Torvalds You can set here the default compression mode of JFFS2 from 13601da177e4SLinus Torvalds the available compression modes. Don't touch if unsure. 13611da177e4SLinus Torvalds 13621da177e4SLinus Torvaldsconfig JFFS2_CMODE_NONE 13631da177e4SLinus Torvalds bool "no compression" 13641da177e4SLinus Torvalds help 13651da177e4SLinus Torvalds Uses no compression. 13661da177e4SLinus Torvalds 13671da177e4SLinus Torvaldsconfig JFFS2_CMODE_PRIORITY 13681da177e4SLinus Torvalds bool "priority" 13691da177e4SLinus Torvalds help 1370cc2e2767SMatt LaPlante Tries the compressors in a predefined order and chooses the first 13711da177e4SLinus Torvalds successful one. 13721da177e4SLinus Torvalds 13731da177e4SLinus Torvaldsconfig JFFS2_CMODE_SIZE 13741da177e4SLinus Torvalds bool "size (EXPERIMENTAL)" 13751da177e4SLinus Torvalds help 13761da177e4SLinus Torvalds Tries all compressors and chooses the one which has the smallest 13771da177e4SLinus Torvalds result. 13781da177e4SLinus Torvalds 13793b23c1f5SRichard Purdieconfig JFFS2_CMODE_FAVOURLZO 13803b23c1f5SRichard Purdie bool "Favour LZO" 13813b23c1f5SRichard Purdie help 13823b23c1f5SRichard Purdie Tries all compressors and chooses the one which has the smallest 13833b23c1f5SRichard Purdie result but gives some preference to LZO (which has faster 13843b23c1f5SRichard Purdie decompression) at the expense of size. 13853b23c1f5SRichard Purdie 13861da177e4SLinus Torvaldsendchoice 13871da177e4SLinus Torvalds 13881da177e4SLinus Torvaldsconfig CRAMFS 13891da177e4SLinus Torvalds tristate "Compressed ROM file system support (cramfs)" 13909361401eSDavid Howells depends on BLOCK 13911da177e4SLinus Torvalds select ZLIB_INFLATE 13921da177e4SLinus Torvalds help 13931da177e4SLinus Torvalds Saying Y here includes support for CramFs (Compressed ROM File 13941da177e4SLinus Torvalds System). CramFs is designed to be a simple, small, and compressed 13951da177e4SLinus Torvalds file system for ROM based embedded systems. CramFs is read-only, 13961da177e4SLinus Torvalds limited to 256MB file systems (with 16MB files), and doesn't support 13971da177e4SLinus Torvalds 16/32 bits uid/gid, hard links and timestamps. 13981da177e4SLinus Torvalds 13991da177e4SLinus Torvalds See <file:Documentation/filesystems/cramfs.txt> and 14001da177e4SLinus Torvalds <file:fs/cramfs/README> for further information. 14011da177e4SLinus Torvalds 14021da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 14031da177e4SLinus Torvalds cramfs. Note that the root file system (the one containing the 14041da177e4SLinus Torvalds directory /) cannot be compiled as a module. 14051da177e4SLinus Torvalds 14061da177e4SLinus Torvalds If unsure, say N. 14071da177e4SLinus Torvalds 14081da177e4SLinus Torvaldsconfig VXFS_FS 14091da177e4SLinus Torvalds tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" 14109361401eSDavid Howells depends on BLOCK 14111da177e4SLinus Torvalds help 14121da177e4SLinus Torvalds FreeVxFS is a file system driver that support the VERITAS VxFS(TM) 14131da177e4SLinus Torvalds file system format. VERITAS VxFS(TM) is the standard file system 14141da177e4SLinus Torvalds of SCO UnixWare (and possibly others) and optionally available 14151da177e4SLinus Torvalds for Sunsoft Solaris, HP-UX and many other operating systems. 14161da177e4SLinus Torvalds Currently only readonly access is supported. 14171da177e4SLinus Torvalds 14181da177e4SLinus Torvalds NOTE: the file system type as used by mount(1), mount(2) and 14191da177e4SLinus Torvalds fstab(5) is 'vxfs' as it describes the file system format, not 14201da177e4SLinus Torvalds the actual driver. 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be 14231da177e4SLinus Torvalds called freevxfs. If unsure, say N. 14241da177e4SLinus Torvalds 14251da177e4SLinus Torvalds 14261da177e4SLinus Torvaldsconfig HPFS_FS 14271da177e4SLinus Torvalds tristate "OS/2 HPFS file system support" 14289361401eSDavid Howells depends on BLOCK 14291da177e4SLinus Torvalds help 14301da177e4SLinus Torvalds OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS 14311da177e4SLinus Torvalds is the file system used for organizing files on OS/2 hard disk 14321da177e4SLinus Torvalds partitions. Say Y if you want to be able to read files from and 14331da177e4SLinus Torvalds write files to an OS/2 HPFS partition on your hard drive. OS/2 14341da177e4SLinus Torvalds floppies however are in regular MSDOS format, so you don't need this 14351da177e4SLinus Torvalds option in order to be able to read them. Read 14361da177e4SLinus Torvalds <file:Documentation/filesystems/hpfs.txt>. 14371da177e4SLinus Torvalds 14381da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14391da177e4SLinus Torvalds module will be called hpfs. If unsure, say N. 14401da177e4SLinus Torvalds 14411da177e4SLinus Torvalds 14421da177e4SLinus Torvalds 14431da177e4SLinus Torvaldsconfig QNX4FS_FS 14441da177e4SLinus Torvalds tristate "QNX4 file system support (read only)" 14459361401eSDavid Howells depends on BLOCK 14461da177e4SLinus Torvalds help 14471da177e4SLinus Torvalds This is the file system used by the real-time operating systems 14481da177e4SLinus Torvalds QNX 4 and QNX 6 (the latter is also called QNX RTP). 14491da177e4SLinus Torvalds Further information is available at <http://www.qnx.com/>. 14501da177e4SLinus Torvalds Say Y if you intend to mount QNX hard disks or floppies. 14511da177e4SLinus Torvalds Unless you say Y to "QNX4FS read-write support" below, you will 14521da177e4SLinus Torvalds only be able to read these file systems. 14531da177e4SLinus Torvalds 14541da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 14551da177e4SLinus Torvalds module will be called qnx4. 14561da177e4SLinus Torvalds 14571da177e4SLinus Torvalds If you don't know whether you need it, then you don't need it: 14581da177e4SLinus Torvalds answer N. 14591da177e4SLinus Torvalds 14601da177e4SLinus Torvaldsconfig QNX4FS_RW 14611da177e4SLinus Torvalds bool "QNX4FS write support (DANGEROUS)" 14621da177e4SLinus Torvalds depends on QNX4FS_FS && EXPERIMENTAL && BROKEN 14631da177e4SLinus Torvalds help 14641da177e4SLinus Torvalds Say Y if you want to test write support for QNX4 file systems. 14651da177e4SLinus Torvalds 14661da177e4SLinus Torvalds It's currently broken, so for now: 14671da177e4SLinus Torvalds answer N. 14681da177e4SLinus Torvalds 14691da177e4SLinus Torvalds 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvaldsconfig SYSV_FS 14721da177e4SLinus Torvalds tristate "System V/Xenix/V7/Coherent file system support" 14739361401eSDavid Howells depends on BLOCK 14741da177e4SLinus Torvalds help 14751da177e4SLinus Torvalds SCO, Xenix and Coherent are commercial Unix systems for Intel 14761da177e4SLinus Torvalds machines, and Version 7 was used on the DEC PDP-11. Saying Y 14771da177e4SLinus Torvalds here would allow you to read from their floppies and hard disk 14781da177e4SLinus Torvalds partitions. 14791da177e4SLinus Torvalds 14801da177e4SLinus Torvalds If you have floppies or hard disk partitions like that, it is likely 14811da177e4SLinus Torvalds that they contain binaries from those other Unix systems; in order 1482cab00891SMatt LaPlante to run these binaries, you will want to install linux-abi which is 14831da177e4SLinus Torvalds a set of kernel modules that lets you run SCO, Xenix, Wyse, 14841da177e4SLinus Torvalds UnixWare, Dell Unix and System V programs under Linux. It is 14851da177e4SLinus Torvalds available via FTP (user: ftp) from 14861da177e4SLinus Torvalds <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>). 14871da177e4SLinus Torvalds NOTE: that will work only for binaries from Intel-based systems; 14881da177e4SLinus Torvalds PDP ones will have to wait until somebody ports Linux to -11 ;-) 14891da177e4SLinus Torvalds 14901da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 14911da177e4SLinus Torvalds network using NFS, you don't need the System V file system support 14921da177e4SLinus Torvalds (but you need NFS file system support obviously). 14931da177e4SLinus Torvalds 14941da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 14951da177e4SLinus Torvalds good portable way to transport files and directories between unixes 14961da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 14971da177e4SLinus Torvalds tar" or preferably "info tar"). Note also that this option has 14981da177e4SLinus Torvalds nothing whatsoever to do with the option "System V IPC". Read about 14991da177e4SLinus Torvalds the System V file system in 15001da177e4SLinus Torvalds <file:Documentation/filesystems/sysv-fs.txt>. 15011da177e4SLinus Torvalds Saying Y here will enlarge your kernel by about 27 KB. 15021da177e4SLinus Torvalds 15031da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 15041da177e4SLinus Torvalds sysv. 15051da177e4SLinus Torvalds 15061da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15071da177e4SLinus Torvalds 15081da177e4SLinus Torvalds 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvaldsconfig UFS_FS 15111da177e4SLinus Torvalds tristate "UFS file system support (read only)" 15129361401eSDavid Howells depends on BLOCK 15131da177e4SLinus Torvalds help 15141da177e4SLinus Torvalds BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, 15151da177e4SLinus Torvalds OpenBSD and NeXTstep) use a file system called UFS. Some System V 15161da177e4SLinus Torvalds Unixes can create and mount hard disk partitions and diskettes using 15171da177e4SLinus Torvalds this file system as well. Saying Y here will allow you to read from 15181da177e4SLinus Torvalds these partitions; if you also want to write to them, say Y to the 15191da177e4SLinus Torvalds experimental "UFS file system write support", below. Please read the 15201da177e4SLinus Torvalds file <file:Documentation/filesystems/ufs.txt> for more information. 15211da177e4SLinus Torvalds 15221da177e4SLinus Torvalds The recently released UFS2 variant (used in FreeBSD 5.x) is 15231da177e4SLinus Torvalds READ-ONLY supported. 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvalds If you only intend to mount files from some other Unix over the 15261da177e4SLinus Torvalds network using NFS, you don't need the UFS file system support (but 15271da177e4SLinus Torvalds you need NFS file system support obviously). 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds Note that this option is generally not needed for floppies, since a 15301da177e4SLinus Torvalds good portable way to transport files and directories between unixes 15311da177e4SLinus Torvalds (and even other operating systems) is given by the tar program ("man 15321da177e4SLinus Torvalds tar" or preferably "info tar"). 15331da177e4SLinus Torvalds 15341da177e4SLinus Torvalds When accessing NeXTstep files, you may need to convert them from the 15351da177e4SLinus Torvalds NeXT character set to the Latin1 character set; use the program 15361da177e4SLinus Torvalds recode ("info recode") for this purpose. 15371da177e4SLinus Torvalds 15381da177e4SLinus Torvalds To compile the UFS file system support as a module, choose M here: the 15391da177e4SLinus Torvalds module will be called ufs. 15401da177e4SLinus Torvalds 15411da177e4SLinus Torvalds If you haven't heard about all of this before, it's safe to say N. 15421da177e4SLinus Torvalds 15431da177e4SLinus Torvaldsconfig UFS_FS_WRITE 15441da177e4SLinus Torvalds bool "UFS file system write support (DANGEROUS)" 15455afb3145SEvgeniy Dushistov depends on UFS_FS && EXPERIMENTAL 15461da177e4SLinus Torvalds help 15471da177e4SLinus Torvalds Say Y here if you want to try writing to UFS partitions. This is 15481da177e4SLinus Torvalds experimental, so you should back up your UFS partitions beforehand. 15491da177e4SLinus Torvalds 1550abf5d15fSEvgeniy Dushistovconfig UFS_DEBUG 1551abf5d15fSEvgeniy Dushistov bool "UFS debugging" 1552abf5d15fSEvgeniy Dushistov depends on UFS_FS 1553abf5d15fSEvgeniy Dushistov help 1554abf5d15fSEvgeniy Dushistov If you are experiencing any problems with the UFS filesystem, say 1555abf5d15fSEvgeniy Dushistov Y here. This will result in _many_ additional debugging messages to be 1556abf5d15fSEvgeniy Dushistov written to the system log. 1557abf5d15fSEvgeniy Dushistov 15581da177e4SLinus Torvaldsendmenu 15591da177e4SLinus Torvalds 1560ea0985adSJan Engelhardtmenuconfig NETWORK_FILESYSTEMS 1561ea0985adSJan Engelhardt bool "Network File Systems" 1562ea0985adSJan Engelhardt default y 15631da177e4SLinus Torvalds depends on NET 1564ea0985adSJan Engelhardt ---help--- 1565ea0985adSJan Engelhardt Say Y here to get to see options for network filesystems and 1566ea0985adSJan Engelhardt filesystem-related networking code, such as NFS daemon and 1567ea0985adSJan Engelhardt RPCSEC security modules. 1568ea0985adSJan Engelhardt This option alone does not add any kernel code. 1569ea0985adSJan Engelhardt 1570ea0985adSJan Engelhardt If you say N, all options in this submenu will be skipped and 1571ea0985adSJan Engelhardt disabled; if unsure, say Y here. 1572ea0985adSJan Engelhardt 1573ea0985adSJan Engelhardtif NETWORK_FILESYSTEMS 15741da177e4SLinus Torvalds 15751da177e4SLinus Torvaldsconfig NFS_FS 15761da177e4SLinus Torvalds tristate "NFS file system support" 15771da177e4SLinus Torvalds depends on INET 15781da177e4SLinus Torvalds select LOCKD 15791da177e4SLinus Torvalds select SUNRPC 1580b7fa0554SAndreas Gruenbacher select NFS_ACL_SUPPORT if NFS_V3_ACL 15811da177e4SLinus Torvalds help 15821da177e4SLinus Torvalds If you are connected to some other (usually local) Unix computer 15831da177e4SLinus Torvalds (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing 15841da177e4SLinus Torvalds on that computer (the NFS server) using the Network File Sharing 15851da177e4SLinus Torvalds protocol, say Y. "Mounting files" means that the client can access 15861da177e4SLinus Torvalds the files with usual UNIX commands as if they were sitting on the 15871da177e4SLinus Torvalds client's hard disk. For this to work, the server must run the 15881da177e4SLinus Torvalds programs nfsd and mountd (but does not need to have NFS file system 15891da177e4SLinus Torvalds support enabled in its kernel). NFS is explained in the Network 15901da177e4SLinus Torvalds Administrator's Guide, available from 15911da177e4SLinus Torvalds <http://www.tldp.org/docs.html#guide>, on its man page: "man 15921da177e4SLinus Torvalds nfs", and in the NFS-HOWTO. 15931da177e4SLinus Torvalds 15941da177e4SLinus Torvalds A superior but less widely used alternative to NFS is provided by 15951da177e4SLinus Torvalds the Coda file system; see "Coda file system support" below. 15961da177e4SLinus Torvalds 15971da177e4SLinus Torvalds If you say Y here, you should have said Y to TCP/IP networking also. 15981da177e4SLinus Torvalds This option would enlarge your kernel by about 27 KB. 15991da177e4SLinus Torvalds 16001da177e4SLinus Torvalds To compile this file system support as a module, choose M here: the 16011da177e4SLinus Torvalds module will be called nfs. 16021da177e4SLinus Torvalds 16031da177e4SLinus Torvalds If you are configuring a diskless machine which will mount its root 16041da177e4SLinus Torvalds file system over NFS at boot time, say Y here and to "Kernel 16051da177e4SLinus Torvalds level IP autoconfiguration" above and to "Root file system on NFS" 16061da177e4SLinus Torvalds below. You cannot compile this driver as a module in this case. 16071da177e4SLinus Torvalds There are two packages designed for booting diskless machines over 16081da177e4SLinus Torvalds the net: netboot, available from 16091da177e4SLinus Torvalds <http://ftp1.sourceforge.net/netboot/>, and Etherboot, 16101da177e4SLinus Torvalds available from <http://ftp1.sourceforge.net/etherboot/>. 16111da177e4SLinus Torvalds 16121da177e4SLinus Torvalds If you don't know what all this is about, say N. 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvaldsconfig NFS_V3 16151da177e4SLinus Torvalds bool "Provide NFSv3 client support" 16161da177e4SLinus Torvalds depends on NFS_FS 16171da177e4SLinus Torvalds help 16181da177e4SLinus Torvalds Say Y here if you want your NFS client to be able to speak version 16191da177e4SLinus Torvalds 3 of the NFS protocol. 16201da177e4SLinus Torvalds 16211da177e4SLinus Torvalds If unsure, say Y. 16221da177e4SLinus Torvalds 1623b7fa0554SAndreas Gruenbacherconfig NFS_V3_ACL 1624b7fa0554SAndreas Gruenbacher bool "Provide client support for the NFSv3 ACL protocol extension" 1625b7fa0554SAndreas Gruenbacher depends on NFS_V3 1626b7fa0554SAndreas Gruenbacher help 1627b7fa0554SAndreas Gruenbacher Implement the NFSv3 ACL protocol extension for manipulating POSIX 1628b7fa0554SAndreas Gruenbacher Access Control Lists. The server should also be compiled with 1629b7fa0554SAndreas Gruenbacher the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option. 1630b7fa0554SAndreas Gruenbacher 1631b7fa0554SAndreas Gruenbacher If unsure, say N. 1632b7fa0554SAndreas Gruenbacher 16331da177e4SLinus Torvaldsconfig NFS_V4 16341da177e4SLinus Torvalds bool "Provide NFSv4 client support (EXPERIMENTAL)" 16351da177e4SLinus Torvalds depends on NFS_FS && EXPERIMENTAL 16361da177e4SLinus Torvalds select RPCSEC_GSS_KRB5 16371da177e4SLinus Torvalds help 16381da177e4SLinus Torvalds Say Y here if you want your NFS client to be able to speak the newer 16391da177e4SLinus Torvalds version 4 of the NFS protocol. 16401da177e4SLinus Torvalds 16411da177e4SLinus Torvalds Note: Requires auxiliary userspace daemons which may be found on 16421da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 16431da177e4SLinus Torvalds 16441da177e4SLinus Torvalds If unsure, say N. 16451da177e4SLinus Torvalds 16461da177e4SLinus Torvaldsconfig NFS_DIRECTIO 1647026ed5c9SChuck Lever bool "Allow direct I/O on NFS files" 1648026ed5c9SChuck Lever depends on NFS_FS 16491da177e4SLinus Torvalds help 16501da177e4SLinus Torvalds This option enables applications to perform uncached I/O on files 16511da177e4SLinus Torvalds in NFS file systems using the O_DIRECT open() flag. When O_DIRECT 16521da177e4SLinus Torvalds is set for a file, its data is not cached in the system's page 16531da177e4SLinus Torvalds cache. Data is moved to and from user-level application buffers 16541da177e4SLinus Torvalds directly. Unlike local disk-based file systems, NFS O_DIRECT has 16551da177e4SLinus Torvalds no alignment restrictions. 16561da177e4SLinus Torvalds 16571da177e4SLinus Torvalds Unless your program is designed to use O_DIRECT properly, you are 16581da177e4SLinus Torvalds much better off allowing the NFS client to manage data caching for 16591da177e4SLinus Torvalds you. Misusing O_DIRECT can cause poor server performance or network 16601da177e4SLinus Torvalds storms. This kernel build option defaults OFF to avoid exposing 16611da177e4SLinus Torvalds system administrators unwittingly to a potentially hazardous 16621da177e4SLinus Torvalds feature. 16631da177e4SLinus Torvalds 16641da177e4SLinus Torvalds For more details on NFS O_DIRECT, see fs/nfs/direct.c. 16651da177e4SLinus Torvalds 16661da177e4SLinus Torvalds If unsure, say N. This reduces the size of the NFS client, and 16671da177e4SLinus Torvalds causes open() to return EINVAL if a file residing in NFS is 16681da177e4SLinus Torvalds opened with the O_DIRECT flag. 16691da177e4SLinus Torvalds 16701da177e4SLinus Torvaldsconfig NFSD 16711da177e4SLinus Torvalds tristate "NFS server support" 16721da177e4SLinus Torvalds depends on INET 16731da177e4SLinus Torvalds select LOCKD 16741da177e4SLinus Torvalds select SUNRPC 16751da177e4SLinus Torvalds select EXPORTFS 1676f05e15b5SHerbert Xu select NFSD_V2_ACL if NFSD_V3_ACL 1677f05e15b5SHerbert Xu select NFS_ACL_SUPPORT if NFSD_V2_ACL 1678f05e15b5SHerbert Xu select NFSD_TCP if NFSD_V4 1679f05e15b5SHerbert Xu select CRYPTO_MD5 if NFSD_V4 1680f05e15b5SHerbert Xu select CRYPTO if NFSD_V4 1681f05e15b5SHerbert Xu select FS_POSIX_ACL if NFSD_V4 16821da177e4SLinus Torvalds help 16831da177e4SLinus Torvalds If you want your Linux box to act as an NFS *server*, so that other 16841da177e4SLinus Torvalds computers on your local network which support NFS can access certain 16851da177e4SLinus Torvalds directories on your box transparently, you have two options: you can 16861da177e4SLinus Torvalds use the self-contained user space program nfsd, in which case you 16871da177e4SLinus Torvalds should say N here, or you can say Y and use the kernel based NFS 16881da177e4SLinus Torvalds server. The advantage of the kernel based solution is that it is 16891da177e4SLinus Torvalds faster. 16901da177e4SLinus Torvalds 16911da177e4SLinus Torvalds In either case, you will need support software; the respective 16921da177e4SLinus Torvalds locations are given in the file <file:Documentation/Changes> in the 16931da177e4SLinus Torvalds NFS section. 16941da177e4SLinus Torvalds 16951da177e4SLinus Torvalds If you say Y here, you will get support for version 2 of the NFS 16961da177e4SLinus Torvalds protocol (NFSv2). If you also want NFSv3, say Y to the next question 16971da177e4SLinus Torvalds as well. 16981da177e4SLinus Torvalds 16991da177e4SLinus Torvalds Please read the NFS-HOWTO, available from 17001da177e4SLinus Torvalds <http://www.tldp.org/docs.html#howto>. 17011da177e4SLinus Torvalds 17021da177e4SLinus Torvalds To compile the NFS server support as a module, choose M here: the 17031da177e4SLinus Torvalds module will be called nfsd. If unsure, say N. 17041da177e4SLinus Torvalds 1705a257cdd0SAndreas Gruenbacherconfig NFSD_V2_ACL 1706a257cdd0SAndreas Gruenbacher bool 1707a257cdd0SAndreas Gruenbacher depends on NFSD 1708a257cdd0SAndreas Gruenbacher 17091da177e4SLinus Torvaldsconfig NFSD_V3 17101da177e4SLinus Torvalds bool "Provide NFSv3 server support" 17111da177e4SLinus Torvalds depends on NFSD 17121da177e4SLinus Torvalds help 17131da177e4SLinus Torvalds If you would like to include the NFSv3 server as well as the NFSv2 17141da177e4SLinus Torvalds server, say Y here. If unsure, say Y. 17151da177e4SLinus Torvalds 1716a257cdd0SAndreas Gruenbacherconfig NFSD_V3_ACL 1717a257cdd0SAndreas Gruenbacher bool "Provide server support for the NFSv3 ACL protocol extension" 1718a257cdd0SAndreas Gruenbacher depends on NFSD_V3 1719a257cdd0SAndreas Gruenbacher help 1720a257cdd0SAndreas Gruenbacher Implement the NFSv3 ACL protocol extension for manipulating POSIX 1721a257cdd0SAndreas Gruenbacher Access Control Lists on exported file systems. NFS clients should 1722a257cdd0SAndreas Gruenbacher be compiled with the NFSv3 ACL protocol extension; see the 1723a257cdd0SAndreas Gruenbacher CONFIG_NFS_V3_ACL option. If unsure, say N. 1724a257cdd0SAndreas Gruenbacher 17251da177e4SLinus Torvaldsconfig NFSD_V4 17261da177e4SLinus Torvalds bool "Provide NFSv4 server support (EXPERIMENTAL)" 17278cd69e1bSTrond Myklebust depends on NFSD && NFSD_V3 && EXPERIMENTAL 172842ed95c4SJ. Bruce Fields select RPCSEC_GSS_KRB5 17291da177e4SLinus Torvalds help 17301da177e4SLinus Torvalds If you would like to include the NFSv4 server as well as the NFSv2 17311da177e4SLinus Torvalds and NFSv3 servers, say Y here. This feature is experimental, and 17321da177e4SLinus Torvalds should only be used if you are interested in helping to test NFSv4. 17331da177e4SLinus Torvalds If unsure, say N. 17341da177e4SLinus Torvalds 17351da177e4SLinus Torvaldsconfig NFSD_TCP 17361da177e4SLinus Torvalds bool "Provide NFS server over TCP support" 17371da177e4SLinus Torvalds depends on NFSD 17381da177e4SLinus Torvalds default y 17391da177e4SLinus Torvalds help 17401da177e4SLinus Torvalds If you want your NFS server to support TCP connections, say Y here. 17411da177e4SLinus Torvalds TCP connections usually perform better than the default UDP when 17421da177e4SLinus Torvalds the network is lossy or congested. If unsure, say Y. 17431da177e4SLinus Torvalds 17441da177e4SLinus Torvaldsconfig ROOT_NFS 17451da177e4SLinus Torvalds bool "Root file system on NFS" 17461da177e4SLinus Torvalds depends on NFS_FS=y && IP_PNP 17471da177e4SLinus Torvalds help 17481da177e4SLinus Torvalds If you want your Linux box to mount its whole root file system (the 17491da177e4SLinus Torvalds one containing the directory /) from some other computer over the 17501da177e4SLinus Torvalds net via NFS (presumably because your box doesn't have a hard disk), 17511da177e4SLinus Torvalds say Y. Read <file:Documentation/nfsroot.txt> for details. It is 17521da177e4SLinus Torvalds likely that in this case, you also want to say Y to "Kernel level IP 17531da177e4SLinus Torvalds autoconfiguration" so that your box can discover its network address 17541da177e4SLinus Torvalds at boot time. 17551da177e4SLinus Torvalds 17561da177e4SLinus Torvalds Most people say N here. 17571da177e4SLinus Torvalds 17581da177e4SLinus Torvaldsconfig LOCKD 17591da177e4SLinus Torvalds tristate 17601da177e4SLinus Torvalds 17611da177e4SLinus Torvaldsconfig LOCKD_V4 17621da177e4SLinus Torvalds bool 17631da177e4SLinus Torvalds depends on NFSD_V3 || NFS_V3 17641da177e4SLinus Torvalds default y 17651da177e4SLinus Torvalds 17661da177e4SLinus Torvaldsconfig EXPORTFS 17671da177e4SLinus Torvalds tristate 17681da177e4SLinus Torvalds 1769a257cdd0SAndreas Gruenbacherconfig NFS_ACL_SUPPORT 1770a257cdd0SAndreas Gruenbacher tristate 1771a257cdd0SAndreas Gruenbacher select FS_POSIX_ACL 1772a257cdd0SAndreas Gruenbacher 1773a257cdd0SAndreas Gruenbacherconfig NFS_COMMON 1774a257cdd0SAndreas Gruenbacher bool 1775a257cdd0SAndreas Gruenbacher depends on NFSD || NFS_FS 1776a257cdd0SAndreas Gruenbacher default y 1777a257cdd0SAndreas Gruenbacher 17781da177e4SLinus Torvaldsconfig SUNRPC 17791da177e4SLinus Torvalds tristate 17801da177e4SLinus Torvalds 17811da177e4SLinus Torvaldsconfig SUNRPC_GSS 17821da177e4SLinus Torvalds tristate 17831da177e4SLinus Torvalds 1784c3a57ed7S\"Talpey, Thomas\config SUNRPC_XPRT_RDMA 1785c3a57ed7S\"Talpey, Thomas\ tristate "RDMA transport for sunrpc (EXPERIMENTAL)" 1786113632d0S\"Talpey, Thomas\ depends on SUNRPC && INFINIBAND && EXPERIMENTAL 1787c3a57ed7S\"Talpey, Thomas\ default m 1788c3a57ed7S\"Talpey, Thomas\ help 1789c3a57ed7S\"Talpey, Thomas\ Adds a client RPC transport for supporting kernel NFS over RDMA 1790c3a57ed7S\"Talpey, Thomas\ mounts, including Infiniband and iWARP. Experimental. 1791c3a57ed7S\"Talpey, Thomas\ 179200a6e7bbSChuck Leverconfig SUNRPC_BIND34 179300a6e7bbSChuck Lever bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" 179400a6e7bbSChuck Lever depends on SUNRPC && EXPERIMENTAL 179500a6e7bbSChuck Lever help 179600a6e7bbSChuck Lever Provides kernel support for querying rpcbind servers via versions 3 179700a6e7bbSChuck Lever and 4 of the rpcbind protocol. The kernel automatically falls back 179800a6e7bbSChuck Lever to version 2 if a remote rpcbind service does not support versions 179900a6e7bbSChuck Lever 3 or 4. 180000a6e7bbSChuck Lever 180100a6e7bbSChuck Lever If unsure, say N to get traditional behavior (version 2 rpcbind 180200a6e7bbSChuck Lever requests only). 180300a6e7bbSChuck Lever 18041da177e4SLinus Torvaldsconfig RPCSEC_GSS_KRB5 18051da177e4SLinus Torvalds tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 18061da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18071da177e4SLinus Torvalds select SUNRPC_GSS 18081da177e4SLinus Torvalds select CRYPTO 18091da177e4SLinus Torvalds select CRYPTO_MD5 18101da177e4SLinus Torvalds select CRYPTO_DES 1811bcbaecbbSPatrick McHardy select CRYPTO_CBC 18121da177e4SLinus Torvalds help 18131da177e4SLinus Torvalds Provides for secure RPC calls by means of a gss-api 18141da177e4SLinus Torvalds mechanism based on Kerberos V5. This is required for 18151da177e4SLinus Torvalds NFSv4. 18161da177e4SLinus Torvalds 18171da177e4SLinus Torvalds Note: Requires an auxiliary userspace daemon which may be found on 18181da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 18191da177e4SLinus Torvalds 18201da177e4SLinus Torvalds If unsure, say N. 18211da177e4SLinus Torvalds 18221da177e4SLinus Torvaldsconfig RPCSEC_GSS_SPKM3 18231da177e4SLinus Torvalds tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)" 18241da177e4SLinus Torvalds depends on SUNRPC && EXPERIMENTAL 18251da177e4SLinus Torvalds select SUNRPC_GSS 18261da177e4SLinus Torvalds select CRYPTO 18271da177e4SLinus Torvalds select CRYPTO_MD5 18281da177e4SLinus Torvalds select CRYPTO_DES 1829df6db302SJ. Bruce Fields select CRYPTO_CAST5 1830bcbaecbbSPatrick McHardy select CRYPTO_CBC 18311da177e4SLinus Torvalds help 18321da177e4SLinus Torvalds Provides for secure RPC calls by means of a gss-api 18331da177e4SLinus Torvalds mechanism based on the SPKM3 public-key mechanism. 18341da177e4SLinus Torvalds 18351da177e4SLinus Torvalds Note: Requires an auxiliary userspace daemon which may be found on 18361da177e4SLinus Torvalds http://www.citi.umich.edu/projects/nfsv4/ 18371da177e4SLinus Torvalds 18381da177e4SLinus Torvalds If unsure, say N. 18391da177e4SLinus Torvalds 18401da177e4SLinus Torvaldsconfig SMB_FS 18411da177e4SLinus Torvalds tristate "SMB file system support (to mount Windows shares etc.)" 18421da177e4SLinus Torvalds depends on INET 18431da177e4SLinus Torvalds select NLS 18441da177e4SLinus Torvalds help 18451da177e4SLinus Torvalds SMB (Server Message Block) is the protocol Windows for Workgroups 18461da177e4SLinus Torvalds (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share 18471da177e4SLinus Torvalds files and printers over local networks. Saying Y here allows you to 18481da177e4SLinus Torvalds mount their file systems (often called "shares" in this context) and 18491da177e4SLinus Torvalds access them just like any other Unix directory. Currently, this 18501da177e4SLinus Torvalds works only if the Windows machines use TCP/IP as the underlying 18511da177e4SLinus Torvalds transport protocol, and not NetBEUI. For details, read 18521da177e4SLinus Torvalds <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO, 18531da177e4SLinus Torvalds available from <http://www.tldp.org/docs.html#howto>. 18541da177e4SLinus Torvalds 18551da177e4SLinus Torvalds Note: if you just want your box to act as an SMB *server* and make 18561da177e4SLinus Torvalds files and printing services available to Windows clients (which need 18571da177e4SLinus Torvalds to have a TCP/IP stack), you don't need to say Y here; you can use 18581da177e4SLinus Torvalds the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>) 18591da177e4SLinus Torvalds for that. 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 18621da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 18631da177e4SLinus Torvalds 18641da177e4SLinus Torvalds To compile the SMB support as a module, choose M here: the module will 18651da177e4SLinus Torvalds be called smbfs. Most people say N, however. 18661da177e4SLinus Torvalds 18671da177e4SLinus Torvaldsconfig SMB_NLS_DEFAULT 18681da177e4SLinus Torvalds bool "Use a default NLS" 18691da177e4SLinus Torvalds depends on SMB_FS 18701da177e4SLinus Torvalds help 18711da177e4SLinus Torvalds Enabling this will make smbfs use nls translations by default. You 18721da177e4SLinus Torvalds need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls 18731da177e4SLinus Torvalds settings and you need to give the default nls for the SMB server as 18741da177e4SLinus Torvalds CONFIG_SMB_NLS_REMOTE. 18751da177e4SLinus Torvalds 18761da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18771da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18781da177e4SLinus Torvalds 18791da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 18801da177e4SLinus Torvalds 18811da177e4SLinus Torvaldsconfig SMB_NLS_REMOTE 18821da177e4SLinus Torvalds string "Default Remote NLS Option" 18831da177e4SLinus Torvalds depends on SMB_NLS_DEFAULT 18841da177e4SLinus Torvalds default "cp437" 18851da177e4SLinus Torvalds help 18861da177e4SLinus Torvalds This setting allows you to specify a default value for which 18871da177e4SLinus Torvalds codepage the server uses. If this field is left blank no 18881da177e4SLinus Torvalds translations will be done by default. The local codepage/charset 18891da177e4SLinus Torvalds default to CONFIG_NLS_DEFAULT. 18901da177e4SLinus Torvalds 18911da177e4SLinus Torvalds The nls settings can be changed at mount time, if your smbmount 18921da177e4SLinus Torvalds supports that, using the codepage and iocharset parameters. 18931da177e4SLinus Torvalds 18941da177e4SLinus Torvalds smbmount from samba 2.2.0 or later supports this. 18951da177e4SLinus Torvalds 18961da177e4SLinus Torvaldsconfig CIFS 18971da177e4SLinus Torvalds tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)" 18981da177e4SLinus Torvalds depends on INET 18991da177e4SLinus Torvalds select NLS 19001da177e4SLinus Torvalds help 19011da177e4SLinus Torvalds This is the client VFS module for the Common Internet File System 19021da177e4SLinus Torvalds (CIFS) protocol which is the successor to the Server Message Block 19031da177e4SLinus Torvalds (SMB) protocol, the native file sharing mechanism for most early 19041da177e4SLinus Torvalds PC operating systems. The CIFS protocol is fully supported by 19051da177e4SLinus Torvalds file servers such as Windows 2000 (including Windows 2003, NT 4 19061da177e4SLinus Torvalds and Windows XP) as well by Samba (which provides excellent CIFS 1907ec58ef03SSteve French server support for Linux and many other operating systems). Limited 19088af18971SSteve French support for OS/2 and Windows ME and similar servers is provided as well. 19091da177e4SLinus Torvalds 19101da177e4SLinus Torvalds The intent of the cifs module is to provide an advanced 19111da177e4SLinus Torvalds network file system client for mounting to CIFS compliant servers, 19121da177e4SLinus Torvalds including support for dfs (hierarchical name space), secure per-user 19131da177e4SLinus Torvalds session establishment, safe distributed caching (oplock), optional 19148af18971SSteve French packet signing, Unicode and other internationalization improvements. 19158af18971SSteve French If you need to mount to Samba or Windows from this machine, say Y. 19161da177e4SLinus Torvalds 19171da177e4SLinus Torvaldsconfig CIFS_STATS 19181da177e4SLinus Torvalds bool "CIFS statistics" 19191da177e4SLinus Torvalds depends on CIFS 19201da177e4SLinus Torvalds help 19211da177e4SLinus Torvalds Enabling this option will cause statistics for each server share 19221da177e4SLinus Torvalds mounted by the cifs client to be displayed in /proc/fs/cifs/Stats 19231da177e4SLinus Torvalds 1924ec58ef03SSteve Frenchconfig CIFS_STATS2 19253979877eSSteve French bool "Extended statistics" 1926ec58ef03SSteve French depends on CIFS_STATS 1927ec58ef03SSteve French help 1928ec58ef03SSteve French Enabling this option will allow more detailed statistics on SMB 1929ec58ef03SSteve French request timing to be displayed in /proc/fs/cifs/DebugData and also 1930ec58ef03SSteve French allow optional logging of slow responses to dmesg (depending on the 1931ec58ef03SSteve French value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details). 1932ec58ef03SSteve French These additional statistics may have a minor effect on performance 1933ec58ef03SSteve French and memory utilization. 1934ec58ef03SSteve French 1935ec58ef03SSteve French Unless you are a developer or are doing network performance analysis 1936ec58ef03SSteve French or tuning, say N. 1937ec58ef03SSteve French 19383979877eSSteve Frenchconfig CIFS_WEAK_PW_HASH 19393979877eSSteve French bool "Support legacy servers which use weaker LANMAN security" 19403979877eSSteve French depends on CIFS 19413979877eSSteve French help 19423979877eSSteve French Modern CIFS servers including Samba and most Windows versions 19433979877eSSteve French (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos) 19443979877eSSteve French security mechanisms. These hash the password more securely 19453979877eSSteve French than the mechanisms used in the older LANMAN version of the 19463979877eSSteve French SMB protocol needed to establish sessions with old SMB servers. 19473979877eSSteve French 19483979877eSSteve French Enabling this option allows the cifs module to mount to older 19493979877eSSteve French LANMAN based servers such as OS/2 and Windows 95, but such 19503979877eSSteve French mounts may be less secure than mounts using NTLM or more recent 19513979877eSSteve French security mechanisms if you are on a public network. Unless you 19523979877eSSteve French have a need to access old SMB servers (and are on a private 19533979877eSSteve French network) you probably want to say N. Even if this support 19543979877eSSteve French is enabled in the kernel build, they will not be used 19553979877eSSteve French automatically. At runtime LANMAN mounts are disabled but 19563979877eSSteve French can be set to required (or optional) either in 19573979877eSSteve French /proc/fs/cifs (see fs/cifs/README for more detail) or via an 19583979877eSSteve French option on the mount command. This support is disabled by 19593979877eSSteve French default in order to reduce the possibility of a downgrade 19603979877eSSteve French attack. 19613979877eSSteve French 19623979877eSSteve French If unsure, say N. 19633979877eSSteve French 19641da177e4SLinus Torvaldsconfig CIFS_XATTR 1965ec58ef03SSteve French bool "CIFS extended attributes" 19661da177e4SLinus Torvalds depends on CIFS 19671da177e4SLinus Torvalds help 19681da177e4SLinus Torvalds Extended attributes are name:value pairs associated with inodes by 19691da177e4SLinus Torvalds the kernel or by users (see the attr(5) manual page, or visit 19701da177e4SLinus Torvalds <http://acl.bestbits.at/> for details). CIFS maps the name of 19711da177e4SLinus Torvalds extended attributes beginning with the user namespace prefix 19721da177e4SLinus Torvalds to SMB/CIFS EAs. EAs are stored on Windows servers without the 19731da177e4SLinus Torvalds user namespace prefix, but their names are seen by Linux cifs clients 19741da177e4SLinus Torvalds prefaced by the user namespace prefix. The system namespace 19751da177e4SLinus Torvalds (used by some filesystems to store ACLs) is not supported at 19761da177e4SLinus Torvalds this time. 19771da177e4SLinus Torvalds 19781da177e4SLinus Torvalds If unsure, say N. 19791da177e4SLinus Torvalds 19801da177e4SLinus Torvaldsconfig CIFS_POSIX 1981ec58ef03SSteve French bool "CIFS POSIX Extensions" 19821da177e4SLinus Torvalds depends on CIFS_XATTR 19831da177e4SLinus Torvalds help 19841da177e4SLinus Torvalds Enabling this option will cause the cifs client to attempt to 19851da177e4SLinus Torvalds negotiate a newer dialect with servers, such as Samba 3.0.5 19861da177e4SLinus Torvalds or later, that optionally can handle more POSIX like (rather 19871da177e4SLinus Torvalds than Windows like) file behavior. It also enables 19881da177e4SLinus Torvalds support for POSIX ACLs (getfacl and setfacl) to servers 19891da177e4SLinus Torvalds (such as Samba 3.10 and later) which can negotiate 19901da177e4SLinus Torvalds CIFS POSIX ACL support. If unsure, say N. 19911da177e4SLinus Torvalds 19923979877eSSteve Frenchconfig CIFS_DEBUG2 19933856a9d4SSteve French bool "Enable additional CIFS debugging routines" 19948ba10ab1SSteve French depends on CIFS 19953979877eSSteve French help 19963979877eSSteve French Enabling this option adds a few more debugging routines 19973979877eSSteve French to the cifs code which slightly increases the size of 19983979877eSSteve French the cifs module and can cause additional logging of debug 19993979877eSSteve French messages in some error paths, slowing performance. This 20003979877eSSteve French option can be turned off unless you are debugging 20013979877eSSteve French cifs problems. If unsure, say N. 20023979877eSSteve French 20031da177e4SLinus Torvaldsconfig CIFS_EXPERIMENTAL 20041da177e4SLinus Torvalds bool "CIFS Experimental Features (EXPERIMENTAL)" 2005cb9dbff9SSteve French depends on CIFS && EXPERIMENTAL 20061da177e4SLinus Torvalds help 2007ec58ef03SSteve French Enables cifs features under testing. These features are 20088af18971SSteve French experimental and currently include DFS support and directory 20098af18971SSteve French change notification ie fcntl(F_DNOTIFY), as well as the upcall 20108af18971SSteve French mechanism which will be used for Kerberos session negotiation 20118af18971SSteve French and uid remapping. Some of these features also may depend on 20128af18971SSteve French setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental 20138af18971SSteve French (which is disabled by default). See the file fs/cifs/README 20148af18971SSteve French for more details. If unsure, say N. 20151da177e4SLinus Torvalds 2016a2653ebaSSteve Frenchconfig CIFS_UPCALL 20173979877eSSteve French bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)" 2018a2653ebaSSteve French depends on CIFS_EXPERIMENTAL 201909fe7ba7SJeff Layton depends on KEYS 2020a2653ebaSSteve French help 2021a2653ebaSSteve French Enables an upcall mechanism for CIFS which will be used to contact 2022a2653ebaSSteve French userspace helper utilities to provide SPNEGO packaged Kerberos 2023a2653ebaSSteve French tickets which are needed to mount to certain secure servers 20241b397f4fSSteve French (for which more secure Kerberos authentication is required). If 20251b397f4fSSteve French unsure, say N. 2026a2653ebaSSteve French 20271da177e4SLinus Torvaldsconfig NCP_FS 20281da177e4SLinus Torvalds tristate "NCP file system support (to mount NetWare volumes)" 20291da177e4SLinus Torvalds depends on IPX!=n || INET 20301da177e4SLinus Torvalds help 20311da177e4SLinus Torvalds NCP (NetWare Core Protocol) is a protocol that runs over IPX and is 20321da177e4SLinus Torvalds used by Novell NetWare clients to talk to file servers. It is to 20331da177e4SLinus Torvalds IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you 20341da177e4SLinus Torvalds to mount NetWare file server volumes and to access them just like 20351da177e4SLinus Torvalds any other Unix directory. For details, please read the file 20361da177e4SLinus Torvalds <file:Documentation/filesystems/ncpfs.txt> in the kernel source and 20371da177e4SLinus Torvalds the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>. 20381da177e4SLinus Torvalds 20391da177e4SLinus Torvalds You do not have to say Y here if you want your Linux box to act as a 20401da177e4SLinus Torvalds file *server* for Novell NetWare clients. 20411da177e4SLinus Torvalds 20421da177e4SLinus Torvalds General information about how to connect Linux, Windows machines and 20431da177e4SLinus Torvalds Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. 20441da177e4SLinus Torvalds 20451da177e4SLinus Torvalds To compile this as a module, choose M here: the module will be called 20461da177e4SLinus Torvalds ncpfs. Say N unless you are connected to a Novell network. 20471da177e4SLinus Torvalds 20481da177e4SLinus Torvaldssource "fs/ncpfs/Kconfig" 20491da177e4SLinus Torvalds 20501da177e4SLinus Torvaldsconfig CODA_FS 20511da177e4SLinus Torvalds tristate "Coda file system support (advanced network fs)" 20521da177e4SLinus Torvalds depends on INET 20531da177e4SLinus Torvalds help 20541da177e4SLinus Torvalds Coda is an advanced network file system, similar to NFS in that it 20551da177e4SLinus Torvalds enables you to mount file systems of a remote server and access them 20561da177e4SLinus Torvalds with regular Unix commands as if they were sitting on your hard 20571da177e4SLinus Torvalds disk. Coda has several advantages over NFS: support for 20581da177e4SLinus Torvalds disconnected operation (e.g. for laptops), read/write server 20591da177e4SLinus Torvalds replication, security model for authentication and encryption, 20601da177e4SLinus Torvalds persistent client caches and write back caching. 20611da177e4SLinus Torvalds 20621da177e4SLinus Torvalds If you say Y here, your Linux box will be able to act as a Coda 20631da177e4SLinus Torvalds *client*. You will need user level code as well, both for the 20641da177e4SLinus Torvalds client and server. Servers are currently user level, i.e. they need 20651da177e4SLinus Torvalds no kernel support. Please read 20661da177e4SLinus Torvalds <file:Documentation/filesystems/coda.txt> and check out the Coda 20671da177e4SLinus Torvalds home page <http://www.coda.cs.cmu.edu/>. 20681da177e4SLinus Torvalds 20691da177e4SLinus Torvalds To compile the coda client support as a module, choose M here: the 20701da177e4SLinus Torvalds module will be called coda. 20711da177e4SLinus Torvalds 20721da177e4SLinus Torvaldsconfig CODA_FS_OLD_API 20731da177e4SLinus Torvalds bool "Use 96-bit Coda file identifiers" 20741da177e4SLinus Torvalds depends on CODA_FS 20751da177e4SLinus Torvalds help 20761da177e4SLinus Torvalds A new kernel-userspace API had to be introduced for Coda v6.0 20771da177e4SLinus Torvalds to support larger 128-bit file identifiers as needed by the 20781da177e4SLinus Torvalds new realms implementation. 20791da177e4SLinus Torvalds 20801da177e4SLinus Torvalds However this new API is not backward compatible with older 20811da177e4SLinus Torvalds clients. If you really need to run the old Coda userspace 20821da177e4SLinus Torvalds cache manager then say Y. 20831da177e4SLinus Torvalds 20841da177e4SLinus Torvalds For most cases you probably want to say N. 20851da177e4SLinus Torvalds 20861da177e4SLinus Torvaldsconfig AFS_FS 208764aaa4f8SDavid Howells tristate "Andrew File System support (AFS) (EXPERIMENTAL)" 20881da177e4SLinus Torvalds depends on INET && EXPERIMENTAL 208908e0e7c8SDavid Howells select AF_RXRPC 20901da177e4SLinus Torvalds help 20911da177e4SLinus Torvalds If you say Y here, you will get an experimental Andrew File System 20921da177e4SLinus Torvalds driver. It currently only supports unsecured read-only AFS access. 20931da177e4SLinus Torvalds 2094cc2e2767SMatt LaPlante See <file:Documentation/filesystems/afs.txt> for more information. 20951da177e4SLinus Torvalds 20961da177e4SLinus Torvalds If unsure, say N. 20971da177e4SLinus Torvalds 209808e0e7c8SDavid Howellsconfig AFS_DEBUG 209908e0e7c8SDavid Howells bool "AFS dynamic debugging" 210008e0e7c8SDavid Howells depends on AFS_FS 210108e0e7c8SDavid Howells help 210208e0e7c8SDavid Howells Say Y here to make runtime controllable debugging messages appear. 210308e0e7c8SDavid Howells 210408e0e7c8SDavid Howells See <file:Documentation/filesystems/afs.txt> for more information. 210508e0e7c8SDavid Howells 210608e0e7c8SDavid Howells If unsure, say N. 210708e0e7c8SDavid Howells 210893fa58cbSEric Van Hensbergenconfig 9P_FS 210993fa58cbSEric Van Hensbergen tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)" 2110bd238fb4SLatchesar Ionkov depends on INET && NET_9P && EXPERIMENTAL 211193fa58cbSEric Van Hensbergen help 211293fa58cbSEric Van Hensbergen If you say Y here, you will get experimental support for 211393fa58cbSEric Van Hensbergen Plan 9 resource sharing via the 9P2000 protocol. 211493fa58cbSEric Van Hensbergen 211593fa58cbSEric Van Hensbergen See <http://v9fs.sf.net> for more information. 211693fa58cbSEric Van Hensbergen 211793fa58cbSEric Van Hensbergen If unsure, say N. 211893fa58cbSEric Van Hensbergen 2119ea0985adSJan Engelhardtendif # NETWORK_FILESYSTEMS 21201da177e4SLinus Torvalds 21219361401eSDavid Howellsif BLOCK 21221da177e4SLinus Torvaldsmenu "Partition Types" 21231da177e4SLinus Torvalds 21241da177e4SLinus Torvaldssource "fs/partitions/Kconfig" 21251da177e4SLinus Torvalds 21261da177e4SLinus Torvaldsendmenu 21279361401eSDavid Howellsendif 21281da177e4SLinus Torvalds 21291da177e4SLinus Torvaldssource "fs/nls/Kconfig" 2130e7fd4179SDavid Teiglandsource "fs/dlm/Kconfig" 21311da177e4SLinus Torvalds 21321da177e4SLinus Torvaldsendmenu 21331da177e4SLinus Torvalds 2134