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ce59a299cb
Add required zlib_deflate parts based on kernel zlib code in preparation to DASD dumper DFLTCC deflate exploitation. Omit inflate modules in order to minimize the dumper size (no decompression is required for the dumping). Adjust include statements leaving other code as is. Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* zconf.h -- configuration of the zlib compression library
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* Copyright (C) 1995-1998 Jean-loup Gailly.
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* @(#) $Id$ */
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#ifndef _ZCONF_H
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#define _ZCONF_H
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/* The memory requirements for deflate are (in bytes):
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(1 << (windowBits+2)) + (1 << (memLevel+9))
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that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
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plus a few kilobytes for small objects. For example, if you want to reduce
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the default memory requirements from 256K to 128K, compile with
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make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
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Of course this will generally degrade compression (there's no free lunch).
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The memory requirements for inflate are (in bytes) 1 << windowBits
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that is, 32K for windowBits=15 (default value) plus a few kilobytes
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for small objects.
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*/
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/* Maximum value for memLevel in deflateInit2 */
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#ifndef MAX_MEM_LEVEL
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# define MAX_MEM_LEVEL 8
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#endif
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/* Maximum value for windowBits in deflateInit2 and inflateInit2.
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* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
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* created by gzip. (Files created by minigzip can still be extracted by
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* gzip.)
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*/
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#ifndef MAX_WBITS
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# define MAX_WBITS 15 /* 32K LZ77 window */
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#endif
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/* default windowBits for decompression. MAX_WBITS is for compression only */
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#ifndef DEF_WBITS
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# define DEF_WBITS MAX_WBITS
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#endif
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/* default memLevel */
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#if MAX_MEM_LEVEL >= 8
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# define DEF_MEM_LEVEL 8
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#else
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# define DEF_MEM_LEVEL MAX_MEM_LEVEL
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#endif
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/* Type declarations */
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typedef unsigned char Byte; /* 8 bits */
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typedef unsigned int uInt; /* 16 bits or more */
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typedef unsigned long uLong; /* 32 bits or more */
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typedef void *voidp;
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#endif /* _ZCONF_H */
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