YAFFS2 import

Direct import of yaffs as a tarball as of 20071113 from their public
CVS-web at http://www.aleph1.co.uk/cgi-bin/viewcvs.cgi/yaffs2/

The code can also be imported on the command line with:
export CVSROOT=:pserver:anonymous@cvs.aleph1.co.uk:/home/aleph1/cvs cvs logon
(Hit return when asked for a password)
cvs checkout yaffs2

Signed-off-by: William Juul <william.juul@tandberg.com>
Signed-off-by: Stig Olsen <stig.olsen@tandberg.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/fs/yaffs2/yaffs_packedtags1.c b/fs/yaffs2/yaffs_packedtags1.c
new file mode 100644
index 0000000000..f480bf1df1
--- /dev/null
+++ b/fs/yaffs2/yaffs_packedtags1.c
@@ -0,0 +1,52 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 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"
+
+void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t)
+{
+	pt->chunkId = t->chunkId;
+	pt->serialNumber = t->serialNumber;
+	pt->byteCount = t->byteCount;
+	pt->objectId = t->objectId;
+	pt->ecc = 0;
+	pt->deleted = (t->chunkDeleted) ? 0 : 1;
+	pt->unusedStuff = 0;
+	pt->shouldBeFF = 0xFFFFFFFF;
+
+}
+
+void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt)
+{
+	static const __u8 allFF[] =
+	    { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+0xff };
+
+	if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
+		t->blockBad = 0;
+		if (pt->shouldBeFF != 0xFFFFFFFF) {
+			t->blockBad = 1;
+		}
+		t->chunkUsed = 1;
+		t->objectId = pt->objectId;
+		t->chunkId = pt->chunkId;
+		t->byteCount = pt->byteCount;
+		t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+		t->chunkDeleted = (pt->deleted) ? 0 : 1;
+		t->serialNumber = pt->serialNumber;
+	} else {
+		memset(t, 0, sizeof(yaffs_ExtendedTags));
+
+	}
+}