Patchwork [02/47] libext2fs: Add metadata checksum flag

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Submitter Darrick J. Wong
Date Oct. 8, 2011, 7:33 a.m.
Message ID <20111008073329.17888.70945.stgit@elm3c44.beaverton.ibm.com>
Download mbox | patch
Permalink /patch/118427/
State Superseded
Headers show

Comments

Darrick J. Wong - Oct. 8, 2011, 7:33 a.m.
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@us.ibm.com>
---
 lib/blkid/probe.h   |    1 +
 lib/ext2fs/ext2fs.h |    4 +++-
 2 files changed, 4 insertions(+), 1 deletions(-)



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Patch

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/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index b04b0d1..4a3e7af 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -199,6 +199,7 @@  typedef struct ext2_file *ext2_file_t;
 #define EXT2_FLAG_PRINT_PROGRESS	0x40000
 #define EXT2_FLAG_DIRECT_IO		0x80000
 #define EXT2_FLAG_SKIP_MMP		0x100000
+#define EXT2_FLAG_IGNORE_CSUM_ERRORS	0x200000
 
 /*
  * Special flag in the ext2 inode i_flag field that means that this is
@@ -584,7 +585,8 @@  typedef struct ext2_icount *ext2_icount_t;
 					 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|\
 					 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|\
 					 EXT4_FEATURE_RO_COMPAT_BIGALLOC|\
-					 EXT4_FEATURE_RO_COMPAT_QUOTA)
+					 EXT4_FEATURE_RO_COMPAT_QUOTA|\
+					 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
 
 /*
  * These features are only allowed if EXT2_FLAG_SOFTSUPP_FEATURES is passed