1 # SPDX-License-Identifier: GPL-2.0-only <<
2 config UBIFS_FS 1 config UBIFS_FS
3 tristate "UBIFS file system support" 2 tristate "UBIFS file system support"
4 select CRC16 3 select CRC16
5 select CRC32 4 select CRC32
6 select CRYPTO if UBIFS_FS_ADVANCED_COM 5 select CRYPTO if UBIFS_FS_ADVANCED_COMPR
7 select CRYPTO if UBIFS_FS_LZO 6 select CRYPTO if UBIFS_FS_LZO
8 select CRYPTO if UBIFS_FS_ZLIB 7 select CRYPTO if UBIFS_FS_ZLIB
9 select CRYPTO if UBIFS_FS_ZSTD <<
10 select CRYPTO_LZO if UBIFS_FS_LZO 8 select CRYPTO_LZO if UBIFS_FS_LZO
11 select CRYPTO_DEFLATE if UBIFS_FS_ZLIB 9 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 10 depends on MTD_UBI
17 help 11 help
18 UBIFS is a file system for flash dev 12 UBIFS is a file system for flash devices which works on top of UBI.
19 13
20 if UBIFS_FS <<
21 <<
22 config UBIFS_FS_ADVANCED_COMPR 14 config UBIFS_FS_ADVANCED_COMPR
23 bool "Advanced compression options" 15 bool "Advanced compression options"
>> 16 depends on UBIFS_FS
24 help 17 help
25 This option allows to explicitly cho 18 This option allows to explicitly choose which compressions, if any,
26 are enabled in UBIFS. Removing compr 19 are enabled in UBIFS. Removing compressors means inability to read
27 existing file systems. 20 existing file systems.
28 21
29 If unsure, say 'N'. 22 If unsure, say 'N'.
30 23
31 config UBIFS_FS_LZO 24 config UBIFS_FS_LZO
32 bool "LZO compression support" if UBIF 25 bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
>> 26 depends on UBIFS_FS
33 default y 27 default y
34 help 28 help
35 LZO compressor is generally faster 29 LZO compressor is generally faster than zlib but compresses worse.
36 Say 'Y' if unsure. 30 Say 'Y' if unsure.
37 31
38 config UBIFS_FS_ZLIB 32 config UBIFS_FS_ZLIB
39 bool "ZLIB compression support" if UBI 33 bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
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 34 depends on UBIFS_FS
47 default y 35 default y
48 help 36 help
49 ZSTD compresses is a big win in spee !! 37 Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
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 <<
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