Add a feature flag to enable metadata checksumming in e2fsprogs. Also add a
runtime flag to disable checksum verification; this flag will be used by
debugfs to salvage filesystems and tune2fs when resetting checksums.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
lib/blkid/probe.h | 1 +
lib/e2p/feature.c | 2 ++
lib/ext2fs/ext2_fs.h | 1 +
lib/ext2fs/ext2fs.h | 4 +++-
4 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/lib/blkid/probe.h b/lib/blkid/probe.h
index 37e80ef..d6809e1 100644
--- a/lib/blkid/probe.h
+++ b/lib/blkid/probe.h
@@ -110,6 +110,7 @@ struct ext2_super_block {
#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
#define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100
+#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
/* for s_feature_incompat */
#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
diff --git a/lib/e2p/feature.c b/lib/e2p/feature.c
index 16fba53..07b700d 100644
--- a/lib/e2p/feature.c
+++ b/lib/e2p/feature.c
@@ -59,6 +59,8 @@ static struct feature feature_list[] = {
"quota" },
{ E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_BIGALLOC,
"bigalloc"},
+ { E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM,
+ "metadata_csum"},
{ E2P_FEATURE_INCOMPAT, EXT2_FEATURE_INCOMPAT_COMPRESSION,
"compression" },
diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
index e342bf0..ae7662e 100644
--- a/lib/ext2fs/ext2_fs.h
+++ b/lib/ext2fs/ext2_fs.h
@@ -635,6 +635,7 @@ struct ext2_super_block {
#define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT 0x0080
#define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100
#define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200
+#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index b290a1f..e638169 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -195,6 +195,7 @@ typedef struct ext2_file *ext2_file_t;
#define EXT2_FLAG_64BITS 0x20000
#define EXT2_FLAG_PRINT_PROGRESS 0x40000
#define EXT2_FLAG_DIRECT_IO 0x80000
+#define EXT2_FLAG_IGNORE_CSUM_ERRORS 0x100000
/*
* Special flag in the ext2 inode i_flag field that means that this is
@@ -564,7 +565,8 @@ typedef struct ext2_icount *ext2_icount_t;
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|\
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
- EXT4_FEATURE_RO_COMPAT_BIGALLOC)
+ EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
/*
* These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed
--
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