[deliverable/linux.git] / arch / powerpc / boot / gunzip_util.h

/*
 * Decompression convenience functions
 *
 * Copyright 2007 David Gibson, IBM Corporation.
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */
#ifndef _PPC_BOOT_GUNZIP_UTIL_H_
#define _PPC_BOOT_GUNZIP_UTIL_H_

#include "zlib.h"

/* scratch space for gunzip; 46912 is from zlib_inflate_workspacesize() */
#define GUNZIP_SCRATCH_SIZE	46912

struct gunzip_state {
	z_stream s;
	char scratch[46912];
};

void gunzip_start(struct gunzip_state *state, void *src, int srclen);
int gunzip_partial(struct gunzip_state *state, void *dst, int dstlen);
void gunzip_exactly(struct gunzip_state *state, void *dst, int len);
void gunzip_discard(struct gunzip_state *state, int len);
int gunzip_finish(struct gunzip_state *state, void *dst, int len);

#endif /* _PPC_BOOT_GUNZIP_UTIL_H_ */
Commit	Line	Data
ad9d2716 DG	1	/*
	2	* Decompression convenience functions
	3	*
	4	* Copyright 2007 David Gibson, IBM Corporation.
	5	*
	6	* This file is licensed under the terms of the GNU General Public
	7	* License version 2. This program is licensed "as is" without any
	8	* warranty of any kind, whether express or implied.
	9	*/
	10	#ifndef _PPC_BOOT_GUNZIP_UTIL_H_
	11	#define _PPC_BOOT_GUNZIP_UTIL_H_
	12
	13	#include "zlib.h"
	14
	15	/* scratch space for gunzip; 46912 is from zlib_inflate_workspacesize() */
	16	#define GUNZIP_SCRATCH_SIZE 46912
	17
	18	struct gunzip_state {
	19	z_stream s;
	20	char scratch[46912];
	21	};
	22
	23	void gunzip_start(struct gunzip_state state, void src, int srclen);
	24	int gunzip_partial(struct gunzip_state state, void dst, int dstlen);
	25	void gunzip_exactly(struct gunzip_state state, void dst, int len);
	26	void gunzip_discard(struct gunzip_state *state, int len);
	27	int gunzip_finish(struct gunzip_state state, void dst, int len);
	28
	29	#endif /* _PPC_BOOT_GUNZIP_UTIL_H_ */
	30