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authorJoel Becker <joel.becker@oracle.com>2008-12-11 15:04:14 -0800
committerMark Fasheh <mfasheh@suse.com>2009-01-05 08:40:34 -0800
commitd030cc978e9e636dc39ce9a9e8282d48698a3b30 (patch)
tree0d9053e2968eba3505c8333b96869b9d2a16cccc /fs
parentc175a518b4a1d514483abf61813ce5d855917164 (diff)
ocfs2: Validate superblock with checksum and ecc.
The superblock is read via a raw call. Validate it after we find it from its signature. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ocfs2/super.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 2eb657c3e7a..43ed11345b5 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -52,6 +52,7 @@
#include "ocfs1_fs_compat.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "export.h"
#include "extent_map.h"
@@ -1989,6 +1990,15 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
+ /* We have to do a raw check of the feature here */
+ if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
+ OCFS2_FEATURE_INCOMPAT_META_ECC) {
+ status = ocfs2_block_check_validate(bh->b_data,
+ bh->b_size,
+ &di->i_check);
+ if (status)
+ goto out;
+ }
status = -EINVAL;
if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
mlog(ML_ERROR, "found superblock with incorrect block "
@@ -2030,6 +2040,7 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
}
}
+out:
mlog_exit(status);
return status;
}