diff options
| -rw-r--r-- | fs/ntfs/inode.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index c2715521e562..7381a18cfadd 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -1192,6 +1192,15 @@ no_data_attr_special_case: vi->i_flags |= S_IMMUTABLE; /* + * System files such as $Bitmap and $MFT are maintained by the driver + * itself, and writing them from userspace corrupts the volume. + * Always make them immutable regardless of the sys_immutable option. + * Directories are skipped so the root and $Extend stay usable. + */ + if (ni->mft_no < FILE_first_user && S_ISREG(vi->i_mode)) + vi->i_flags |= S_IMMUTABLE; + + /* * The number of 512-byte blocks used on disk (for stat). This is in so * far inaccurate as it doesn't account for any named streams or other * special non-resident attributes, but that is how Windows works, too, |