port generic and ixp4xx kernel patches to 2.6.27 (compiles except for iptables, but...

[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / files-2.6.27 / fs / yaffs2 / yaffs_packedtags1.c

diff --git a/target/linux/generic-2.6/files-2.6.27/fs/yaffs2/yaffs_packedtags1.c b/target/linux/generic-2.6/files-2.6.27/fs/yaffs2/yaffs_packedtags1.c
new file mode 100644 (file)
index 0000000..f480bf1
--- /dev/null
+++ b/target/linux/generic-2.6/files-2.6.27/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));
+
+       }
+}