tdb: don't use 'private' in headers.
[ccan] / ccan / tdb / check.c
index 53fb286613a3e829e8f2aa159109124c3e182503..4fbbb92c5a4ae62902d14b7ccffa697df0ccbde8 100644 (file)
@@ -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 && hdr.rwlocks != TDB_HASH_RWLOCK_MAGIC)
+               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)
@@ -303,7 +309,7 @@ static bool tdb_check_free_record(struct tdb_context *tdb,
 }
 
 /* Slow, but should be very rare. */
-static size_t dead_space(struct tdb_context *tdb, tdb_off_t off)
+size_t tdb_dead_space(struct tdb_context *tdb, tdb_off_t off)
 {
        size_t len;
 
@@ -401,7 +407,7 @@ int tdb_check(struct tdb_context *tdb,
                                found_recovery = true;
                                break;
                        }
-                       dead = dead_space(tdb, off);
+                       dead = tdb_dead_space(tdb, off);
                        if (dead < sizeof(rec))
                                goto corrupt;