120 lines
3.3 KiB
C
Executable File
120 lines
3.3 KiB
C
Executable File
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright (C) 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
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* University of Szeged, Hungary
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*
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* For licensing information, see the file 'LICENCE' in the
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* jffs2 directory.
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*/
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#ifndef __JFFS2_COMPR_H__
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#define __JFFS2_COMPR_H__
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "linux/jffs2.h"
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#define CONFIG_JFFS2_ZLIB
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#define CONFIG_JFFS2_RTIME
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#define CONFIG_JFFS2_LZO
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#define JFFS2_RUBINMIPS_PRIORITY 10
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#define JFFS2_DYNRUBIN_PRIORITY 20
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#define JFFS2_RTIME_PRIORITY 50
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#define JFFS2_ZLIB_PRIORITY 60
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#define JFFS2_LZO_PRIORITY 80
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#define JFFS2_COMPR_MODE_NONE 0
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#define JFFS2_COMPR_MODE_PRIORITY 1
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#define JFFS2_COMPR_MODE_SIZE 2
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#define JFFS2_COMPR_MODE_FAVOURLZO 3
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#define kmalloc(a,b) malloc(a)
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#define kfree(a) free(a)
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#ifndef GFP_KERNEL
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#define GFP_KERNEL 0
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#endif
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#define vmalloc(a) malloc(a)
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#define vfree(a) free(a)
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#define printk(...) fprintf(stderr,__VA_ARGS__)
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#define KERN_EMERG
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#define KERN_ALERT
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#define KERN_CRIT
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#define KERN_ERR
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#define KERN_WARNING
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#define KERN_NOTICE
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#define KERN_INFO
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#define KERN_DEBUG
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struct list_head {
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struct list_head *next, *prev;
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};
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void jffs2_set_compression_mode(int mode);
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int jffs2_get_compression_mode(void);
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int jffs2_set_compression_mode_name(const char *mode_name);
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int jffs2_enable_compressor_name(const char *name);
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int jffs2_disable_compressor_name(const char *name);
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int jffs2_set_compressor_priority(const char *name, int priority);
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struct jffs2_compressor {
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struct list_head list;
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int priority; /* used by prirority comr. mode */
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const char *name;
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char compr; /* JFFS2_COMPR_XXX */
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int (*compress)(unsigned char *data_in, unsigned char *cpage_out,
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uint32_t *srclen, uint32_t *destlen);
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int (*decompress)(unsigned char *cdata_in, unsigned char *data_out,
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uint32_t cdatalen, uint32_t datalen);
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int usecount;
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int disabled; /* if seted the compressor won't compress */
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unsigned char *compr_buf; /* used by size compr. mode */
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uint32_t compr_buf_size; /* used by size compr. mode */
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uint32_t stat_compr_orig_size;
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uint32_t stat_compr_new_size;
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uint32_t stat_compr_blocks;
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uint32_t stat_decompr_blocks;
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};
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int jffs2_register_compressor(struct jffs2_compressor *comp);
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int jffs2_unregister_compressor(struct jffs2_compressor *comp);
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int jffs2_compressors_init(void);
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int jffs2_compressors_exit(void);
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uint16_t jffs2_compress(unsigned char *data_in, unsigned char **cpage_out,
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uint32_t *datalen, uint32_t *cdatalen);
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/* If it is setted, a decompress will be called after every compress */
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void jffs2_compression_check_set(int yesno);
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int jffs2_compression_check_get(void);
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int jffs2_compression_check_errorcnt_get(void);
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char *jffs2_list_compressors(void);
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char *jffs2_stats(void);
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/* Compressor modules */
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/* These functions will be called by jffs2_compressors_init/exit */
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#ifdef CONFIG_JFFS2_ZLIB
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int jffs2_zlib_init(void);
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void jffs2_zlib_exit(void);
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#endif
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#ifdef CONFIG_JFFS2_RTIME
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int jffs2_rtime_init(void);
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void jffs2_rtime_exit(void);
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#endif
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#ifdef CONFIG_JFFS2_LZO
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int jffs2_lzo_init(void);
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void jffs2_lzo_exit(void);
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#endif
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#endif /* __JFFS2_COMPR_H__ */
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