From d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208 Mon Sep 17 00:00:00 2001 From: Joel Becker Date: Fri, 17 Oct 2008 14:55:01 -0700 Subject: ocfs2: block read meta ecc. Add block check calls to the read_block validate functions. This is the almost all of the read-side checking of metaecc. xattr buckets are not checked yet. Writes are also unchecked, and so a read-write mount will quickly fail. Signed-off-by: Joel Becker Signed-off-by: Mark Fasheh --- fs/ocfs2/alloc.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'fs/ocfs2/alloc.c') diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 84a7bd4db5da..6b27f74bb346 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -37,6 +37,7 @@ #include "alloc.h" #include "aops.h" +#include "blockcheck.h" #include "dlmglue.h" #include "extent_map.h" #include "inode.h" @@ -682,12 +683,28 @@ struct ocfs2_merge_ctxt { static int ocfs2_validate_extent_block(struct super_block *sb, struct buffer_head *bh) { + int rc; struct ocfs2_extent_block *eb = (struct ocfs2_extent_block *)bh->b_data; mlog(0, "Validating extent block %llu\n", (unsigned long long)bh->b_blocknr); + BUG_ON(!buffer_uptodate(bh)); + + /* + * If the ecc fails, we return the error but otherwise + * leave the filesystem running. We know any error is + * local to this block. + */ + rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &eb->h_check); + if (rc) + return rc; + + /* + * Errors after here are fatal. + */ + if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) { ocfs2_error(sb, "Extent block #%llu has bad signature %.*s", -- cgit v1.2.3