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6da0b38f AD |
1 | config EXT3_FS |
2 | tristate "Ext3 journalling file system support" | |
3 | select JBD | |
4 | help | |
5 | This is the journalling version of the Second extended file system | |
6 | (often called ext3), the de facto standard Linux file system | |
7 | (method to organize files on a storage device) for hard disks. | |
8 | ||
9 | The journalling code included in this driver means you do not have | |
10 | to run e2fsck (file system checker) on your file systems after a | |
11 | crash. The journal keeps track of any changes that were being made | |
12 | at the time the system crashed, and can ensure that your file system | |
13 | is consistent without the need for a lengthy check. | |
14 | ||
15 | Other than adding the journal to the file system, the on-disk format | |
16 | of ext3 is identical to ext2. It is possible to freely switch | |
17 | between using the ext3 driver and the ext2 driver, as long as the | |
18 | file system has been cleanly unmounted, or e2fsck is run on the file | |
19 | system. | |
20 | ||
21 | To add a journal on an existing ext2 file system or change the | |
22 | behavior of ext3 file systems, you can use the tune2fs utility ("man | |
23 | tune2fs"). To modify attributes of files and directories on ext3 | |
24 | file systems, use chattr ("man chattr"). You need to be using | |
25 | e2fsprogs version 1.20 or later in order to create ext3 journals | |
26 | (available at <http://sourceforge.net/projects/e2fsprogs/>). | |
27 | ||
28 | To compile this file system support as a module, choose M here: the | |
29 | module will be called ext3. | |
30 | ||
31 | config EXT3_FS_XATTR | |
32 | bool "Ext3 extended attributes" | |
33 | depends on EXT3_FS | |
34 | default y | |
35 | help | |
36 | Extended attributes are name:value pairs associated with inodes by | |
37 | the kernel or by users (see the attr(5) manual page, or visit | |
38 | <http://acl.bestbits.at/> for details). | |
39 | ||
40 | If unsure, say N. | |
41 | ||
42 | You need this for POSIX ACL support on ext3. | |
43 | ||
44 | config EXT3_FS_POSIX_ACL | |
45 | bool "Ext3 POSIX Access Control Lists" | |
46 | depends on EXT3_FS_XATTR | |
47 | select FS_POSIX_ACL | |
48 | help | |
49 | Posix Access Control Lists (ACLs) support permissions for users and | |
50 | groups beyond the owner/group/world scheme. | |
51 | ||
52 | To learn more about Access Control Lists, visit the Posix ACLs for | |
53 | Linux website <http://acl.bestbits.at/>. | |
54 | ||
55 | If you don't know what Access Control Lists are, say N | |
56 | ||
57 | config EXT3_FS_SECURITY | |
58 | bool "Ext3 Security Labels" | |
59 | depends on EXT3_FS_XATTR | |
60 | help | |
61 | Security labels support alternative access control models | |
62 | implemented by security modules like SELinux. This option | |
63 | enables an extended attribute handler for file security | |
64 | labels in the ext3 filesystem. | |
65 | ||
66 | If you are not using a security module that requires using | |
67 | extended attributes for file security labels, say N. |