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-rw-r--r--compr_lzo.c135
1 files changed, 0 insertions, 135 deletions
diff --git a/compr_lzo.c b/compr_lzo.c
deleted file mode 100644
index d2e2afc..0000000
--- a/compr_lzo.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * JFFS2 LZO Compression Interface.
- *
- * Copyright (C) 2007 Nokia Corporation. All rights reserved.
- *
- * Author: Richard Purdie <rpurdie@openedhand.com>
- *
- * 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
- *
- */
-
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-
-#ifndef WITHOUT_LZO
-#include <asm/types.h>
-#include <linux/jffs2.h>
-#include <lzo/lzo1x.h>
-#include "compr.h"
-
-extern int page_size;
-
-static void *lzo_mem;
-static void *lzo_compress_buf;
-
-/*
- * Note about LZO compression.
- *
- * We want to use the _999_ compression routine which gives better compression
- * rates at the expense of time. Decompression time is unaffected. We might as
- * well use the standard lzo library routines for this but they will overflow
- * the destination buffer since they don't check the destination size.
- *
- * We therefore compress to a temporary buffer and copy if it will fit.
- *
- */
-static int jffs2_lzo_cmpr(unsigned char *data_in, unsigned char *cpage_out,
- uint32_t *sourcelen, uint32_t *dstlen)
-{
- lzo_uint compress_size;
- int ret;
-
- ret = lzo1x_999_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem);
-
- if (ret != LZO_E_OK)
- return -1;
-
- if (compress_size > *dstlen)
- return -1;
-
- memcpy(cpage_out, lzo_compress_buf, compress_size);
- *dstlen = compress_size;
-
- return 0;
-}
-
-static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
- uint32_t srclen, uint32_t destlen)
-{
- int ret;
- lzo_uint dl;
-
- ret = lzo1x_decompress_safe(data_in,srclen,cpage_out,&dl,NULL);
-
- if (ret != LZO_E_OK || dl != destlen)
- return -1;
-
- return 0;
-}
-
-static struct jffs2_compressor jffs2_lzo_comp = {
- .priority = JFFS2_LZO_PRIORITY,
- .name = "lzo",
- .compr = JFFS2_COMPR_LZO,
- .compress = &jffs2_lzo_cmpr,
- .decompress = &jffs2_lzo_decompress,
- .disabled = 1,
-};
-
-int jffs2_lzo_init(void)
-{
- int ret;
-
- lzo_mem = malloc(LZO1X_999_MEM_COMPRESS);
- if (!lzo_mem)
- return -1;
-
- /* Worse case LZO compression size from their FAQ */
- lzo_compress_buf = malloc(page_size + (page_size / 16) + 64 + 3);
- if (!lzo_compress_buf) {
- free(lzo_mem);
- return -1;
- }
-
- ret = jffs2_register_compressor(&jffs2_lzo_comp);
- if (ret < 0) {
- free(lzo_compress_buf);
- free(lzo_mem);
- }
-
- return ret;
-}
-
-void jffs2_lzo_exit(void)
-{
- jffs2_unregister_compressor(&jffs2_lzo_comp);
- free(lzo_compress_buf);
- free(lzo_mem);
-}
-
-#else
-
-int jffs2_lzo_init(void)
-{
- return 0;
-}
-
-void jffs2_lzo_exit(void)
-{
-}
-
-#endif