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ocfs2: block read meta ecc.

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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 <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Joel Becker
2008-10-17 14:55:01 -07:00
committed by Mark Fasheh
parent 684ef27837
commit d6b32bbb3e
6 changed files with 101 additions and 4 deletions
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31
fs/ocfs2/suballoc.c
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@ -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;
rc = ocfs2_validate_gd_self(sb, bh, 1);
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)
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);
}