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/suballoc.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'fs/ocfs2/suballoc.c') diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index 226fe21f2608..78755766c329 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -35,6 +35,7 @@ #include "ocfs2.h" #include "alloc.h" +#include "blockcheck.h" #include "dlmglue.h" #include "inode.h" #include "journal.h" @@ -250,8 +251,18 @@ int ocfs2_check_group_descriptor(struct super_block *sb, struct buffer_head *bh) { int rc; + struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; + + BUG_ON(!buffer_uptodate(bh)); - rc = ocfs2_validate_gd_self(sb, bh, 1); + /* + * 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, &gd->bg_check); + if (!rc) + rc = ocfs2_validate_gd_self(sb, bh, 1); if (!rc) rc = ocfs2_validate_gd_parent(sb, di, bh, 1); @@ -261,9 +272,27 @@ int ocfs2_check_group_descriptor(struct super_block *sb, static int ocfs2_validate_group_descriptor(struct super_block *sb, struct buffer_head *bh) { + int rc; + struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; + mlog(0, "Validating group descriptor %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, &gd->bg_check); + if (rc) + return rc; + + /* + * Errors after here are fatal. + */ + return ocfs2_validate_gd_self(sb, bh, 0); } -- cgit v1.2.1