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| author | Joel Becker <joel.becker@oracle.com> | 2008-10-17 23:55:01 +0200 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2009-01-05 17:40:31 +0100 |
| commit | d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208 (patch) | |
| tree | ce38de666096f571f4b1754e898729cf2d9eb435 /fs/ocfs2/alloc.c | |
| parent | ocfs2: Add a validation hook for quota block reads. (diff) | |
| download | linux-d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208.tar.xz linux-d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208.zip | |
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 <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/alloc.c')
| -rw-r--r-- | fs/ocfs2/alloc.c | 17 |
1 files changed, 17 insertions, 0 deletions
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", |