1 files changed, 95 insertions, 0 deletions
diff --git a/src/btree/bt_conv.c b/src/btree/bt_conv.c
new file mode 100644
index 00000000..348ce5c2
--- /dev/null
+++ b/src/btree/bt_conv.c
@@ -0,0 +1,95 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 2012 Oracle and/or its affiliates.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+#include "dbinc/db_page.h"
+#include "dbinc/db_swap.h"
+#include "dbinc/btree.h"
+
+/*
+ * __bam_pgin --
+ *	Convert host-specific page layout from the host-independent format
+ *	stored on disk.
+ *
+ * PUBLIC: int __bam_pgin __P((DB *, db_pgno_t, void *, DBT *));
+ */
+int
+__bam_pgin(dbp, pg, pp, cookie)
+	DB *dbp;
+	db_pgno_t pg;
+	void *pp;
+	DBT *cookie;
+{
+	DB_PGINFO *pginfo;
+	PAGE *h;
+
+	pginfo = (DB_PGINFO *)cookie->data;
+	if (!F_ISSET(pginfo, DB_AM_SWAP))
+		return (0);
+
+	h = pp;
+	return (TYPE(h) == P_BTREEMETA ?  __bam_mswap(dbp->env, pp) :
+	    __db_byteswap(dbp, pg, pp, pginfo->db_pagesize, 1));
+}
+
+/*
+ * __bam_pgout --
+ *	Convert host-specific page layout to the host-independent format
+ *	stored on disk.
+ *
+ * PUBLIC: int __bam_pgout __P((DB *, db_pgno_t, void *, DBT *));
+ */
+int
+__bam_pgout(dbp, pg, pp, cookie)
+	DB *dbp;
+	db_pgno_t pg;
+	void *pp;
+	DBT *cookie;
+{
+	DB_PGINFO *pginfo;
+	PAGE *h;
+
+	pginfo = (DB_PGINFO *)cookie->data;
+	if (!F_ISSET(pginfo, DB_AM_SWAP))
+		return (0);
+
+	h = pp;
+	return (TYPE(h) == P_BTREEMETA ?  __bam_mswap(dbp->env, pp) :
+	    __db_byteswap(dbp, pg, pp, pginfo->db_pagesize, 0));
+}
+
+/*
+ * __bam_mswap --
+ *	Swap the bytes on the btree metadata page.
+ *
+ * PUBLIC: int __bam_mswap __P((ENV *, PAGE *));
+ */
+int
+__bam_mswap(env, pg)
+	ENV *env;
+	PAGE *pg;
+{
+	u_int8_t *p;
+
+	COMPQUIET(env, NULL);
+
+	__db_metaswap(pg);
+	p = (u_int8_t *)pg + sizeof(DBMETA);
+
+	p += sizeof(u_int32_t);	/* unused */
+	SWAP32(p);		/* minkey */
+	SWAP32(p);		/* re_len */
+	SWAP32(p);		/* re_pad */
+	SWAP32(p);		/* root */
+	p += 92 * sizeof(u_int32_t); /* unused */
+	SWAP32(p);		/* crypto_magic */
+
+	return (0);
+}