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 <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 284 deletions

diff --git a/ubifs-utils/mkfs.ubifs/compr.c b/ubifs-utils/mkfs.ubifs/compr.c
deleted file mode 100644
index e4324f3..0000000
--- a/ubifs-utils/mkfs.ubifs/compr.c
+++ /dev/null
@@ -1,284 +0,0 @@
-/*
- * 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
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-#ifdef WITH_LZO
-#include <lzo/lzo1x.h>
-#endif
-#include <linux/types.h>
-#ifdef WITH_ZSTD
-#include <zstd.h>
-#endif
-
-#ifdef WITH_ZLIB
-#define crc32 __zlib_crc32
-#include <zlib.h>
-#undef crc32
-#endif
-
-#include "compr.h"
-#include "mkfs.ubifs.h"
-
-static void *lzo_mem;
-static unsigned long long errcnt = 0;
-#ifdef WITH_LZO
-static struct ubifs_info *c = &info_;
-#endif
-
-#ifdef WITH_ZLIB
-#define DEFLATE_DEF_LEVEL     Z_DEFAULT_COMPRESSION
-#define DEFLATE_DEF_WINBITS   11
-#define DEFLATE_DEF_MEMLEVEL  8
-
-static int zlib_deflate(void *in_buf, size_t in_len, void *out_buf,
-			size_t *out_len)
-{
-	z_stream strm;
-
-	strm.zalloc = NULL;
-	strm.zfree = NULL;
-
-	/*
-	 * Match exactly the zlib parameters used by the Linux kernel crypto
-	 * API.
-	 */
-        if (deflateInit2(&strm, DEFLATE_DEF_LEVEL, Z_DEFLATED,
-			 -DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL,
-			 Z_DEFAULT_STRATEGY)) {
-		errcnt += 1;
-		return -1;
-	}
-
-	strm.next_in = in_buf;
-	strm.avail_in = in_len;
-	strm.total_in = 0;
-
-	strm.next_out = out_buf;
-	strm.avail_out = *out_len;
-	strm.total_out = 0;
-
-	if (deflate(&strm, Z_FINISH) != Z_STREAM_END) {
-		deflateEnd(&strm);
-		errcnt += 1;
-		return -1;
-	}
-
-	if (deflateEnd(&strm) != Z_OK) {
-		errcnt += 1;
-		return -1;
-	}
-
-	*out_len = strm.total_out;
-
-	return 0;
-}
-#endif
-
-#ifdef WITH_LZO
-static int lzo_compress(void *in_buf, size_t in_len, void *out_buf,
-			size_t *out_len)
-{
-	lzo_uint len;
-	int ret;
-
-	len = *out_len;
-	ret = lzo1x_999_compress(in_buf, in_len, out_buf, &len, lzo_mem);
-	*out_len = len;
-
-	if (ret != LZO_E_OK) {
-		errcnt += 1;
-		return -1;
-	}
-
-	return 0;
-}
-#endif
-
-#ifdef WITH_ZSTD
-static ZSTD_CCtx *zctx;
-
-static int zstd_compress(void *in_buf, size_t in_len, void *out_buf,
-			 size_t *out_len)
-{
-	size_t ret;
-
-	ret = ZSTD_compressCCtx(zctx, out_buf, *out_len, in_buf, in_len, 0);
-	if (ZSTD_isError(ret)) {
-		errcnt += 1;
-		return -1;
-	}
-	*out_len = ret;
-	return 0;
-}
-#endif
-
-static int no_compress(void *in_buf, size_t in_len, void *out_buf,
-		       size_t *out_len)
-{
-	memcpy(out_buf, in_buf, in_len);
-	*out_len = in_len;
-	return 0;
-}
-
-static char *zlib_buf;
-
-#if defined(WITH_LZO) && defined(WITH_ZLIB)
-static int favor_lzo_compress(void *in_buf, size_t in_len, void *out_buf,
-			       size_t *out_len, int *type)
-{
-	int lzo_ret, zlib_ret;
-	size_t lzo_len, zlib_len;
-
-	lzo_len = zlib_len = *out_len;
-	lzo_ret = lzo_compress(in_buf, in_len, out_buf, &lzo_len);
-	zlib_ret = zlib_deflate(in_buf, in_len, zlib_buf, &zlib_len);
-
-	if (lzo_ret && zlib_ret)
-		/* Both compressors failed */
-		return -1;
-
-	if (!lzo_ret && !zlib_ret) {
-		double percent;
-
-		/* Both compressors succeeded */
-		if (lzo_len <= zlib_len )
-			goto select_lzo;
-
-		percent = (double)zlib_len / (double)lzo_len;
-		percent *= 100;
-		if (percent > 100 - c->favor_percent)
-			goto select_lzo;
-		goto select_zlib;
-	}
-
-	if (lzo_ret)
-		/* Only zlib compressor succeeded */
-		goto select_zlib;
-
-	/* Only LZO compressor succeeded */
-
-select_lzo:
-	*out_len = lzo_len;
-	*type = MKFS_UBIFS_COMPR_LZO;
-	return 0;
-
-select_zlib:
-	*out_len = zlib_len;
-	*type = MKFS_UBIFS_COMPR_ZLIB;
-	memcpy(out_buf, zlib_buf, zlib_len);
-	return 0;
-}
-#endif
-
-int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len,
-		  int type)
-{
-	int ret;
-
-	if (in_len < UBIFS_MIN_COMPR_LEN) {
-		no_compress(in_buf, in_len, out_buf, out_len);
-		return MKFS_UBIFS_COMPR_NONE;
-	}
-
-#if defined(WITH_LZO) && defined(WITH_ZLIB)
-	if (c->favor_lzo)
-		ret = favor_lzo_compress(in_buf, in_len, out_buf, out_len, &type);
-	else {
-#else
-	{
-#endif
-		switch (type) {
-#ifdef WITH_LZO
-		case MKFS_UBIFS_COMPR_LZO:
-			ret = lzo_compress(in_buf, in_len, out_buf, out_len);
-			break;
-#endif
-#ifdef WITH_ZLIB
-		case MKFS_UBIFS_COMPR_ZLIB:
-			ret = zlib_deflate(in_buf, in_len, out_buf, out_len);
-			break;
-#endif
-#ifdef WITH_ZSTD
-		case MKFS_UBIFS_COMPR_ZSTD:
-			ret = zstd_compress(in_buf, in_len, out_buf, out_len);
-			break;
-#endif
-		case MKFS_UBIFS_COMPR_NONE:
-			ret = 1;
-			break;
-		default:
-			errcnt += 1;
-			ret = 1;
-			break;
-		}
-	}
-	if (ret || *out_len >= in_len) {
-		no_compress(in_buf, in_len, out_buf, out_len);
-		return MKFS_UBIFS_COMPR_NONE;
-	}
-	return type;
-}
-
-int init_compression(void)
-{
-#ifndef WITH_LZO
-	lzo_mem = NULL;
-#else
-	lzo_mem = malloc(LZO1X_999_MEM_COMPRESS);
-	if (!lzo_mem)
-		return -1;
-#endif
-
-#ifndef WITH_ZLIB
-	zlib_buf = NULL;
-#else
-	zlib_buf = malloc(UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR);
-	if (!zlib_buf)
-		goto err;
-#endif
-
-#ifdef WITH_ZSTD
-	zctx = ZSTD_createCCtx();
-	if (!zctx)
-		goto err;
-#endif
-
-	return 0;
-err:
-	free(zlib_buf);
-	free(lzo_mem);
-	return -1;
-}
-
-void destroy_compression(void)
-{
-	free(zlib_buf);
-	free(lzo_mem);
-#ifdef WITH_ZSTD
-	ZSTD_freeCCtx(zctx);
-#endif
-	if (errcnt)
-		fprintf(stderr, "%llu compression errors occurred\n", errcnt);
-}