From 0e8cc8bd92257da2e1df88cbc985e166e472ce61 Mon Sep 17 00:00:00 2001 From: William Juul Date: Thu, 15 Nov 2007 11:13:05 +0100 Subject: 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 Signed-off-by: Stig Olsen --- fs/yaffs2/yaffs_packedtags1.c | 52 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 fs/yaffs2/yaffs_packedtags1.c (limited to 'fs/yaffs2/yaffs_packedtags1.c') 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 + * + * 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)); + + } +} -- cgit v1.2.1