diff options
Diffstat (limited to 'fs/yaffs2/yaffs_packedtags2.h')
| -rw-r--r-- | fs/yaffs2/yaffs_packedtags2.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/yaffs2/yaffs_packedtags2.h b/fs/yaffs2/yaffs_packedtags2.h new file mode 100644 index 000000000000..598032601f78 --- /dev/null +++ b/fs/yaffs2/yaffs_packedtags2.h @@ -0,0 +1,50 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2018 Aleph One Ltd. + * + * 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 Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +/* This is used to pack YAFFS2 tags, not YAFFS1tags. */ + +#ifndef __YAFFS_PACKEDTAGS2_H__ +#define __YAFFS_PACKEDTAGS2_H__ + +#include "yaffs_guts.h" +#include "yaffs_ecc.h" + +struct yaffs_packed_tags2_tags_only { + unsigned seq_number; + unsigned obj_id; + unsigned chunk_id; + unsigned n_bytes; +}; + +struct yaffs_packed_tags2 { + struct yaffs_packed_tags2_tags_only t; + struct yaffs_ecc_other ecc; +}; + +/* Full packed tags with ECC, used for oob tags */ +void yaffs_pack_tags2(struct yaffs_dev *dev, + struct yaffs_packed_tags2 *pt, + const struct yaffs_ext_tags *t, int tags_ecc); +void yaffs_unpack_tags2(struct yaffs_dev *dev, + struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt, + int tags_ecc); + +/* Only the tags part (no ECC for use with inband tags */ +void yaffs_pack_tags2_tags_only(struct yaffs_dev *dev, + struct yaffs_packed_tags2_tags_only *pt, + const struct yaffs_ext_tags *t); +void yaffs_unpack_tags2_tags_only(struct yaffs_dev *dev, + struct yaffs_ext_tags *t, + struct yaffs_packed_tags2_tags_only *pt); +#endif |