tdb: put example hashes into header, so we notice incorrect hash_fn.

[ccan] / ccan / tdb / check.c

diff --git a/ccan/tdb/check.c b/ccan/tdb/check.c
index 53fb286613a3e829e8f2aa159109124c3e182503..955f255484a720a08a07a9e33a1fde6b0036b49c 100644 (file)
--- a/ccan/tdb/check.c
+++ b/ccan/tdb/check.c
@@ -29,6 +29,7 @@
 static bool tdb_check_header(struct tdb_context *tdb, tdb_off_t *recovery)
 {
        struct tdb_header hdr;
+       uint32_t h1, h2;
 
        if (tdb->methods->tdb_read(tdb, 0, &hdr, sizeof(hdr), 0) == -1)
                return false;
@@ -39,7 +40,12 @@ static bool tdb_check_header(struct tdb_context *tdb, tdb_off_t *recovery)
        if (hdr.version != TDB_VERSION)
                goto corrupt;
 
-       if (hdr.hashcheck != hashcheck(tdb))
+       if (hdr.rwlocks != 0)
+               goto corrupt;
+
+       tdb_header_hash(tdb, &h1, &h2);
+       if (hdr.magic1_hash && hdr.magic2_hash &&
+           (hdr.magic1_hash != h1 || hdr.magic2_hash != h2))
                goto corrupt;
 
        if (hdr.hash_size == 0)