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| author | Darrick J. Wong <djwong@us.ibm.com> | 2012-04-30 02:31:10 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-04-30 02:31:10 +0400 |
| commit | 814525f4df50a196464ce2c7abe91f693203060f (patch) | |
| tree | 221de5b0331240ff6bc99a2dd7c48460e1305075 /fs/ext4/ioctl.c | |
| parent | a9c4731780544d52b243bf46e4dd635c67fa9f84 (diff) | |
| download | linux-814525f4df50a196464ce2c7abe91f693203060f.tar.xz | |
ext4: calculate and verify inode checksums
This patch introduces to ext4 the ability to calculate and verify
inode checksums. This requires the use of a new ro compatibility flag
and some accompanying e2fsprogs patches to provide the relevant
features in tune2fs and e2fsck. The inode generation changes have
been integrated into this patch.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 6eee25591b81..feba55a225a6 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -152,6 +152,13 @@ flags_out: if (!inode_owner_or_capable(inode)) return -EPERM; + if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { + ext4_warning(sb, "Setting inode version is not " + "supported with metadata_csum enabled."); + return -ENOTTY; + } + err = mnt_want_write_file(filp); if (err) return err; |