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authorDongsheng Yang <yangds.fnst@cn.fujitsu.com>2015-10-31 11:12:01 +0800
committerBrian Norris <computersforpeace@gmail.com>2015-11-11 14:38:40 -0800
commit7d81790ced345585b1e647ca9d0f6678e7062fa4 (patch)
tree02f61270c7a0fff7bb6b2e28f247a3d2fd6ff490 /jffsX-utils/compr.h
parent344753f2aacb94d98ce238f81fc4a4b6ef6adea9 (diff)
mtd-utils: Restructure the mtd-utils source.
* There is no code modification in this commit, only moving * the files to proper place. The user tools looks a little messy as we place almost the all tools in the root directory of mtd-utils. To make it more clear, I propose to introduce the following structure for our source code. mtd-utils/ |-- lib |-- include |-- misc-utils |-- jffsX-utils |-- nand-utils |-- nor-utils |-- ubi-utils |-- ubifs-utils `-- tests Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'jffsX-utils/compr.h')
-rw-r--r--jffsX-utils/compr.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/jffsX-utils/compr.h b/jffsX-utils/compr.h
new file mode 100644
index 0000000..a21e935
--- /dev/null
+++ b/jffsX-utils/compr.h
@@ -0,0 +1,119 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
+ * University of Szeged, Hungary
+ *
+ * For licensing information, see the file 'LICENCE' in the
+ * jffs2 directory.
+ */
+
+#ifndef __JFFS2_COMPR_H__
+#define __JFFS2_COMPR_H__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "linux/jffs2.h"
+
+#define CONFIG_JFFS2_ZLIB
+#define CONFIG_JFFS2_RTIME
+#define CONFIG_JFFS2_LZO
+
+#define JFFS2_RUBINMIPS_PRIORITY 10
+#define JFFS2_DYNRUBIN_PRIORITY 20
+#define JFFS2_RTIME_PRIORITY 50
+#define JFFS2_ZLIB_PRIORITY 60
+#define JFFS2_LZO_PRIORITY 80
+
+#define JFFS2_COMPR_MODE_NONE 0
+#define JFFS2_COMPR_MODE_PRIORITY 1
+#define JFFS2_COMPR_MODE_SIZE 2
+#define JFFS2_COMPR_MODE_FAVOURLZO 3
+
+#define kmalloc(a,b) malloc(a)
+#define kfree(a) free(a)
+#ifndef GFP_KERNEL
+#define GFP_KERNEL 0
+#endif
+
+#define vmalloc(a) malloc(a)
+#define vfree(a) free(a)
+
+#define printk(...) fprintf(stderr,__VA_ARGS__)
+
+#define KERN_EMERG
+#define KERN_ALERT
+#define KERN_CRIT
+#define KERN_ERR
+#define KERN_WARNING
+#define KERN_NOTICE
+#define KERN_INFO
+#define KERN_DEBUG
+
+struct list_head {
+ struct list_head *next, *prev;
+};
+
+void jffs2_set_compression_mode(int mode);
+int jffs2_get_compression_mode(void);
+int jffs2_set_compression_mode_name(const char *mode_name);
+
+int jffs2_enable_compressor_name(const char *name);
+int jffs2_disable_compressor_name(const char *name);
+
+int jffs2_set_compressor_priority(const char *name, int priority);
+
+struct jffs2_compressor {
+ struct list_head list;
+ int priority; /* used by prirority comr. mode */
+ const char *name;
+ char compr; /* JFFS2_COMPR_XXX */
+ int (*compress)(unsigned char *data_in, unsigned char *cpage_out,
+ uint32_t *srclen, uint32_t *destlen);
+ int (*decompress)(unsigned char *cdata_in, unsigned char *data_out,
+ uint32_t cdatalen, uint32_t datalen);
+ int usecount;
+ int disabled; /* if seted the compressor won't compress */
+ unsigned char *compr_buf; /* used by size compr. mode */
+ uint32_t compr_buf_size; /* used by size compr. mode */
+ uint32_t stat_compr_orig_size;
+ uint32_t stat_compr_new_size;
+ uint32_t stat_compr_blocks;
+ uint32_t stat_decompr_blocks;
+};
+
+int jffs2_register_compressor(struct jffs2_compressor *comp);
+int jffs2_unregister_compressor(struct jffs2_compressor *comp);
+
+int jffs2_compressors_init(void);
+int jffs2_compressors_exit(void);
+
+uint16_t jffs2_compress(unsigned char *data_in, unsigned char **cpage_out,
+ uint32_t *datalen, uint32_t *cdatalen);
+
+/* If it is setted, a decompress will be called after every compress */
+void jffs2_compression_check_set(int yesno);
+int jffs2_compression_check_get(void);
+int jffs2_compression_check_errorcnt_get(void);
+
+char *jffs2_list_compressors(void);
+char *jffs2_stats(void);
+
+/* Compressor modules */
+
+/* These functions will be called by jffs2_compressors_init/exit */
+#ifdef CONFIG_JFFS2_ZLIB
+int jffs2_zlib_init(void);
+void jffs2_zlib_exit(void);
+#endif
+#ifdef CONFIG_JFFS2_RTIME
+int jffs2_rtime_init(void);
+void jffs2_rtime_exit(void);
+#endif
+#ifdef CONFIG_JFFS2_LZO
+int jffs2_lzo_init(void);
+void jffs2_lzo_exit(void);
+#endif
+
+#endif /* __JFFS2_COMPR_H__ */