Introduce small structures for recording directory tree checksums
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
lib/ext2fs/ext2_fs.h | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
index cdfc4a8..65d205a 100644
--- a/lib/ext2fs/ext2_fs.h
+++ b/lib/ext2fs/ext2_fs.h
@@ -241,6 +241,14 @@ struct ext2_dx_countlimit {
__u16 count;
};
+/*
+ * This goes at the end of each htree block. If you want to use the
+ * reserved field, you'll have to update the checksum code to include it.
+ */
+struct ext2_dx_tail {
+ __u32 reserved;
+ __u32 checksum; /* crc32c(uuid+inum+dxblock) */
+};
/*
* Macro-instructions used to manage group descriptors
--
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