The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/opencrypto/deflate.h

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    1 /*      $FreeBSD: releng/7.3/sys/opencrypto/deflate.h 201235 2009-12-29 23:30:16Z bz $  */
    2 /* $OpenBSD: deflate.h,v 1.3 2002/03/14 01:26:51 millert Exp $ */
    3 
    4 /*-
    5  * Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  *
   11  * 1. Redistributions of source code must retain the above copyright
   12  *   notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *   notice, this list of conditions and the following disclaimer in the
   15  *   documentation and/or other materials provided with the distribution.
   16  * 3. The name of the author may not be used to endorse or promote products
   17  *   derived from this software without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /*
   32  * Definition for the wrapper around the deflate compression 
   33  * algorithm used in /sys/crypto
   34  */
   35 
   36 #ifndef _CRYPTO_DEFLATE_H_
   37 #define _CRYPTO_DEFLATE_H_
   38 
   39 #include <net/zlib.h>
   40 
   41 #define Z_METHOD        8
   42 #define Z_MEMLEVEL      8
   43 #define MINCOMP         2       /* won't be used, but must be defined */
   44 #define ZBUF            10
   45 
   46 u_int32_t deflate_global(u_int8_t *, u_int32_t, int, u_int8_t **);
   47 void *z_alloc(void *, u_int, u_int);
   48 void z_free(void *, void *);
   49 
   50 /*
   51  * We are going to use a combined allocation to hold the metadata
   52  * from the struct immediately followed by the real application data.
   53  */
   54 struct deflate_buf {
   55         struct deflate_buf *next;
   56         uint32_t size;
   57         uint8_t data[];
   58 };
   59 
   60 #endif /* _CRYPTO_DEFLATE_H_ */

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