1/* infutil.h -- types and macros common to blocks and codes 2 * Copyright (C) 1995-1998 Mark Adler 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6/* WARNING: this file should *not* be used by applications. It is 7 part of the implementation of the compression library and is 8 subject to change. Applications should only use zlib.h. 9 */ 10 11#ifndef _INFUTIL_H 12#define _INFUTIL_H 13 14#include <linux/zlib.h> 15#ifdef CONFIG_ZLIB_DFLTCC 16#include "../zlib_dfltcc/dfltcc.h" 17#include <asm/page.h> 18#endif 19 20/* memory allocation for inflation */ 21 22struct inflate_workspace { 23 struct inflate_state inflate_state; 24#ifdef CONFIG_ZLIB_DFLTCC 25 struct dfltcc_state dfltcc_state; 26 unsigned char working_window[(1 << MAX_WBITS) + PAGE_SIZE]; 27#else 28 unsigned char working_window[(1 << MAX_WBITS)]; 29#endif 30}; 31 32#ifdef CONFIG_ZLIB_DFLTCC 33/* dfltcc_state must be doubleword aligned for DFLTCC call */ 34static_assert(offsetof(struct inflate_workspace, dfltcc_state) % 8 == 0); 35#endif 36 37#define WS(strm) ((struct inflate_workspace *)(strm->workspace)) 38 39#endif 40