1 # SPDX-License-Identifier: GPL-2.0-only
4 tristate "EROFS filesystem support"
9 EROFS (Enhanced Read-Only File System) is a lightweight
10 read-only file system with modern designs (eg. page-sized
11 blocks, inline xattrs/data, etc.) for scenarios which need
12 high-performance read-only requirements, e.g. Android OS
13 for mobile phones and LIVECDs.
15 It also provides fixed-sized output compression support,
16 which improves storage density, keeps relatively higher
17 compression ratios, which is more useful to achieve high
18 performance for embedded devices with limited memory.
23 bool "EROFS debugging feature"
26 Print debugging messages and enable more BUG_ONs which check
27 filesystem consistency and find potential issues aggressively,
28 which can be used for Android eng build, for example.
33 bool "EROFS extended attributes"
37 Extended attributes are name:value pairs associated with inodes by
38 the kernel or by users (see the attr(5) manual page, or visit
39 <http://acl.bestbits.at/> for details).
43 config EROFS_FS_POSIX_ACL
44 bool "EROFS Access Control Lists"
45 depends on EROFS_FS_XATTR
49 Posix Access Control Lists (ACLs) support permissions for users and
50 groups beyond the owner/group/world scheme.
52 To learn more about Access Control Lists, visit the POSIX ACLs for
53 Linux website <http://acl.bestbits.at/>.
55 If you don't know what Access Control Lists are, say N.
57 config EROFS_FS_SECURITY
58 bool "EROFS Security Labels"
59 depends on EROFS_FS_XATTR
62 Security labels provide an access control facility to support Linux
63 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
64 Linux. This option enables an extended attribute handler for file
65 security labels in the erofs filesystem, so that it requires enabling
66 the extended attribute support in advance.
68 If you are not using a security module, say N.
71 bool "EROFS Data Compression Support"
76 Enable fixed-sized output compression for EROFS.
78 If you don't want to enable compression feature, say N.