/* * 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__ */