From e7e19cd9d8cc0f54ca463c4aebf7c4ef5e4f84f8 Mon Sep 17 00:00:00 2001 From: Zhihao Cheng Date: Mon, 11 Nov 2024 16:36:32 +0800 Subject: ubifs-utils: Split common source files from mkfs.ubifs Split common source files into common dir from mkfs.ubifs, this is a preparation for importing libubifs(from linux kernel) to replace current UBIFS libs. Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer --- ubifs-utils/common/compr.h | 47 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 ubifs-utils/common/compr.h (limited to 'ubifs-utils/common/compr.h') diff --git a/ubifs-utils/common/compr.h b/ubifs-utils/common/compr.h new file mode 100644 index 0000000..d58c7c7 --- /dev/null +++ b/ubifs-utils/common/compr.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2008 Nokia Corporation. + * Copyright (C) 2008 University of Szeged, Hungary + * + * 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. + * + * This program 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 + * this program; if not, write to the Free Software Foundation, Inc., 51 + * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: Artem Bityutskiy + * Adrian Hunter + * Zoltan Sogor + */ + +#ifndef __UBIFS_COMPRESS_H__ +#define __UBIFS_COMPRESS_H__ + +/* + * Compressors may end-up with more data in the output buffer than in the input + * buffer. This constant defined the worst case factor, i.e. we assume that the + * output buffer may be at max. WORST_COMPR_FACTOR times larger than input + * buffer. + */ +#define WORST_COMPR_FACTOR 4 + +enum compression_type +{ + MKFS_UBIFS_COMPR_NONE, + MKFS_UBIFS_COMPR_LZO, + MKFS_UBIFS_COMPR_ZLIB, + MKFS_UBIFS_COMPR_ZSTD, +}; + +int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len, + int type); +int init_compression(void); +void destroy_compression(void); + +#endif -- cgit v1.2.3