original_kernel/include/linux/decompress/unlzma.h

#ifndef DECOMPRESS_UNLZMA_H
#define DECOMPRESS_UNLZMA_H

int unlzma(unsigned char *, int,
	   int(*fill)(void*, unsigned int),
	   int(*flush)(void*, unsigned int),
	   unsigned char *output,
	   int *posp,
	   void(*error)(char *x)
	);

#endif