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authorDarrick J. Wong <djwong@us.ibm.com>2012-04-29 18:31:10 -0400
committerTheodore Ts'o <tytso@mit.edu>2012-04-29 18:31:10 -0400
commit814525f4df50a196464ce2c7abe91f693203060f (patch)
tree221de5b0331240ff6bc99a2dd7c48460e1305075 /fs/ext4/ioctl.c
parenta9c4731780544d52b243bf46e4dd635c67fa9f84 (diff)
downloadop-kernel-dev-814525f4df50a196464ce2c7abe91f693203060f.zip
op-kernel-dev-814525f4df50a196464ce2c7abe91f693203060f.tar.gz
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.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 6eee255..feba55a 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;
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