1 # SPDX-License-Identifier: GPL-2.0-only
2 config UBIFS_FS
3 tristate "UBIFS file system support"
4 select CRC16
5 select CRC32
6 select CRYPTO if UBIFS_FS_ADVANCED_COM
7 select CRYPTO if UBIFS_FS_LZO
8 select CRYPTO if UBIFS_FS_ZLIB
9 select CRYPTO if UBIFS_FS_ZSTD
10 select CRYPTO_LZO if UBIFS_FS_LZO
11 select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
12 select CRYPTO_ZSTD if UBIFS_FS_ZSTD
13 select CRYPTO_HASH_INFO
14 select UBIFS_FS_XATTR if FS_ENCRYPTION
15 select FS_ENCRYPTION_ALGS if FS_ENCRYP
16 depends on MTD_UBI
17 help
18 UBIFS is a file system for flash dev
19
20 if UBIFS_FS
21
22 config UBIFS_FS_ADVANCED_COMPR
23 bool "Advanced compression options"
24 help
25 This option allows to explicitly cho
26 are enabled in UBIFS. Removing compr
27 existing file systems.
28
29 If unsure, say 'N'.
30
31 config UBIFS_FS_LZO
32 bool "LZO compression support" if UBIF
33 default y
34 help
35 LZO compressor is generally faster
36 Say 'Y' if unsure.
37
38 config UBIFS_FS_ZLIB
39 bool "ZLIB compression support" if UBI
40 default y
41 help
42 Zlib compresses better than LZO but
43
44 config UBIFS_FS_ZSTD
45 bool "ZSTD compression support" if UBI
46 depends on UBIFS_FS
47 default y
48 help
49 ZSTD compresses is a big win in spee
50 in compression ratio over LZO. Say '
51
52 config UBIFS_ATIME_SUPPORT
53 bool "Access time support"
54 default n
55 help
56 Originally UBIFS did not support ati
57 increased flash wear. This option ad
58 to preserve the old behavior. If you
59 which means that file-system read op
60 updates). This may affect file-syste
61 so be careful. How often atime is up
62 strictatime is the "heavy", relatime
63
64 If unsure, say 'N'
65
66 config UBIFS_FS_XATTR
67 bool "UBIFS XATTR support"
68 default y
69 help
70 Saying Y here includes support for e
71 Xattrs are name:value pairs associat
72 the kernel or by users (see the attr
73
74 If unsure, say Y.
75
76 config UBIFS_FS_SECURITY
77 bool "UBIFS Security Labels"
78 depends on UBIFS_FS_XATTR
79 default y
80 help
81 Security labels provide an access co
82 Security Models (LSMs) accepted by A
83 Linux. This option enables an extend
84 security labels in the ubifs filesys
85 the extended attribute support in ad
86
87 If you are not using a security modu
88
89 config UBIFS_FS_AUTHENTICATION
90 bool "UBIFS authentication support"
91 select KEYS
92 select CRYPTO_HMAC
93 select SYSTEM_DATA_VERIFICATION
94 help
95 Enable authentication support for UB
96 against offline changes for both dat
97 If you say yes here you should also
98 sha256, these are not selected autom
99 different options.
100
101 endif # UBIFS_FS
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.