From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../generic/files/fs/yaffs2/yaffs_packedtags1.c    | 56 ++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c

(limited to 'target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c')

diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c
new file mode 100644
index 0000000..dd9a331
--- /dev/null
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c
@@ -0,0 +1,56 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "yaffs_packedtags1.h"
+#include "yportenv.h"
+
+static const u8 all_ff[20] = {
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff
+};
+
+void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
+		      const struct yaffs_ext_tags *t)
+{
+	pt->chunk_id = t->chunk_id;
+	pt->serial_number = t->serial_number;
+	pt->n_bytes = t->n_bytes;
+	pt->obj_id = t->obj_id;
+	pt->ecc = 0;
+	pt->deleted = (t->is_deleted) ? 0 : 1;
+	pt->unused_stuff = 0;
+	pt->should_be_ff = 0xffffffff;
+}
+
+void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
+			const struct yaffs_packed_tags1 *pt)
+{
+
+	if (memcmp(all_ff, pt, sizeof(struct yaffs_packed_tags1))) {
+		t->block_bad = 0;
+		if (pt->should_be_ff != 0xffffffff)
+			t->block_bad = 1;
+		t->chunk_used = 1;
+		t->obj_id = pt->obj_id;
+		t->chunk_id = pt->chunk_id;
+		t->n_bytes = pt->n_bytes;
+		t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+		t->is_deleted = (pt->deleted) ? 0 : 1;
+		t->serial_number = pt->serial_number;
+	} else {
+		memset(t, 0, sizeof(struct yaffs_ext_tags));
+	}
+}
-- 
cgit v1.2.3