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Diffstat (limited to 'fs/ubifs/Kconfig')
| -rw-r--r-- | fs/ubifs/Kconfig | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/fs/ubifs/Kconfig b/fs/ubifs/Kconfig new file mode 100644 index 000000000..45d3d207f --- /dev/null +++ b/fs/ubifs/Kconfig @@ -0,0 +1,101 @@ +# SPDX-License-Identifier: GPL-2.0-only +config UBIFS_FS + tristate "UBIFS file system support" + select CRC16 + select CRC32 + select CRYPTO if UBIFS_FS_ADVANCED_COMPR + select CRYPTO if UBIFS_FS_LZO + select CRYPTO if UBIFS_FS_ZLIB + select CRYPTO if UBIFS_FS_ZSTD + select CRYPTO_LZO if UBIFS_FS_LZO + select CRYPTO_DEFLATE if UBIFS_FS_ZLIB + select CRYPTO_ZSTD if UBIFS_FS_ZSTD + select CRYPTO_HASH_INFO + select UBIFS_FS_XATTR if FS_ENCRYPTION + select FS_ENCRYPTION_ALGS if FS_ENCRYPTION + depends on MTD_UBI + help + UBIFS is a file system for flash devices which works on top of UBI. + +if UBIFS_FS + +config UBIFS_FS_ADVANCED_COMPR + bool "Advanced compression options" + help + This option allows to explicitly choose which compressions, if any, + are enabled in UBIFS. Removing compressors means inability to read + existing file systems. + + If unsure, say 'N'. + +config UBIFS_FS_LZO + bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR + default y + help + LZO compressor is generally faster than zlib but compresses worse. + Say 'Y' if unsure. + +config UBIFS_FS_ZLIB + bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR + default y + help + Zlib compresses better than LZO but it is slower. Say 'Y' if unsure. + +config UBIFS_FS_ZSTD + bool "ZSTD compression support" if UBIFS_FS_ADVANCED_COMPR + depends on UBIFS_FS + default y + help + ZSTD compresses is a big win in speed over Zlib and + in compression ratio over LZO. Say 'Y' if unsure. + +config UBIFS_ATIME_SUPPORT + bool "Access time support" + default n + help + Originally UBIFS did not support atime, because it looked like a bad idea due + increased flash wear. This option adds atime support and it is disabled by default + to preserve the old behavior. If you enable this option, UBIFS starts updating atime, + which means that file-system read operations will cause writes (inode atime + updates). This may affect file-system performance and increase flash device wear, + so be careful. How often atime is updated depends on the selected strategy: + strictatime is the "heavy", relatime is "lighter", etc. + + If unsure, say 'N' + +config UBIFS_FS_XATTR + bool "UBIFS XATTR support" + default y + help + Saying Y here includes support for extended attributes (xattrs). + Xattrs are name:value pairs associated with inodes by + the kernel or by users (see the attr(5) manual page). + + If unsure, say Y. + +config UBIFS_FS_SECURITY + bool "UBIFS Security Labels" + depends on UBIFS_FS_XATTR + default y + help + Security labels provide an access control facility to support Linux + Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO + Linux. This option enables an extended attribute handler for file + security labels in the ubifs filesystem, so that it requires enabling + the extended attribute support in advance. + + If you are not using a security module, say N. + +config UBIFS_FS_AUTHENTICATION + bool "UBIFS authentication support" + select KEYS + select CRYPTO_HMAC + select SYSTEM_DATA_VERIFICATION + help + Enable authentication support for UBIFS. This feature offers protection + against offline changes for both data and metadata of the filesystem. + If you say yes here you should also select a hashing algorithm such as + sha256, these are not selected automatically since there are many + different options. + +endif # UBIFS_FS |