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authorEric Biggers <ebiggers@google.com>2020-04-01 13:32:37 -0700
committerTheodore Ts'o <tytso@mit.edu>2020-04-10 11:23:12 -0400
commit950002f7ce619a3a5014f980eb02608cbae24f46 (patch)
tree1c4ef7962527e94902ca2d7c2ef53f4d6c58e7f8
parentb88883f78755f8bb4fdd8b060e82a253f21e2dfa (diff)
downloade2fsprogs-950002f7ce619a3a5014f980eb02608cbae24f46.tar.gz
tune2fs: prevent stable_inodes feature from being cleared
Similar to encrypt and verity, once the stable_inodes feature has been enabled there may be files anywhere on the filesystem that require this feature. Therefore, in general it's unsafe to allow clearing it. Don't allow tune2fs to do so. Like encrypt and verity, it can still be cleared with debugfs if someone really knows what they're doing. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-rw-r--r--misc/tune2fs.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index ca06c98b4..81f90cbf9 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -181,8 +181,7 @@ static __u32 clear_ok_features[3] = {
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_RESIZE_INODE |
EXT2_FEATURE_COMPAT_DIR_INDEX |
- EXT4_FEATURE_COMPAT_FAST_COMMIT |
- EXT4_FEATURE_COMPAT_STABLE_INODES,
+ EXT4_FEATURE_COMPAT_FAST_COMMIT,
/* Incompat */
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT4_FEATURE_INCOMPAT_FLEX_BG |