[linux-mm-cc] [RFC] LZO de/compression support in kernel [1/5]

[Nitin Gupta]

This is the public interface for LZO de/compression.


Index: linux-cc/include/linux/lzo1x.h
===================================================================
--- /dev/null
+++ linux-cc/include/linux/lzo1x.h
@@ -0,0 +1,61 @@
+/* lzo1x.h -- public interface of the LZO1X compression algorithm
+
+   This file is part of the LZO real-time data compression library.
+
+   Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
+   Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   The LZO library 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.
+
+   The LZO library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the LZO library; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+   Markus F.X.J. Oberhumer
+   <markus at oberhumer.com>
+   http://www.oberhumer.com/opensource/lzo/
+
+
+   This file is modified version of lzo1x.h found in original LZO 2.02
+   code. Some additional changes have also been made to make it work
+   in kernel space.
+
+   Nitin Gupta
+   <nitingupta910 at gmail.com>
+ */
+
+#ifndef __LZO1X_H
+#define __LZO1X_H
+
+/* Size of temp buffer (workmem) required by lzo1x_compress */
+#define LZO1X_WORKMEM_SIZE	((size_t) (16384L * sizeof(unsigned char *)))
+
+/* LZO1X_1 compression */
+int
+lzo1x_compress(const unsigned char *src, size_t src_len,
+		unsigned char *dst, size_t *dst_len,
+		void *workmem);
+
+/* LZO1X_1 decompression */
+int
+lzo1x_decompress(const unsigned char *src, size_t src_len,
+		unsigned char *dst, size_t *dst_len);
+
+#endif