36ea3668b9
Extends the Opencrypto API to allow the destination buffer size to be specified when its not the same size as the input buffer (i.e. for operations like compress and decompress). The crypto_op and crypt_n_op structures gain a u_int dst_len field. The session_op structure gains a comp_alg field to specify a compression algorithm. Moved four ioctls to new ids; CIOCGSESSION, CIOCNGSESSION, CIOCCRYPT, and CIOCNCRYPTM. Added four backward compatible ioctls; OCIOCGSESSION, OCIOCNGSESSION, OCIOCCRYPT, and OCIOCNCRYPTM. Backward compatibility is maintained in ocryptodev.h and ocryptodev.c which implement the original ioctls and set dst_len and comp_alg to 0. Adds user-space access to compression features. Adds software gzip support (CRYPTO_GZIP_COMP). Adds the fast version of crc32 from zlib to libkern. This should be generally useful and provide a place to start normalizing the various crc32 routines in the kernel. The crc32 routine is used in this patch to support GZIP. With input and support from tls@NetBSD.org.
59 lines
2.2 KiB
C
59 lines
2.2 KiB
C
/* $NetBSD: deflate.h,v 1.6 2009/03/25 01:26:13 darran Exp $ */
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/* $FreeBSD: src/sys/opencrypto/deflate.h,v 1.1.2.1 2002/11/21 23:34:23 sam Exp $ */
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/* $OpenBSD: deflate.h,v 1.3 2002/03/14 01:26:51 millert Exp $ */
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/*
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* Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Definition for the wrapper around the deflate compression
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* algorithm used in /sys/crypto
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*/
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#ifndef _CRYPTO_DEFLATE_H_
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#define _CRYPTO_DEFLATE_H_
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#include <net/zlib.h>
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#define Z_METHOD 8
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#define Z_MEMLEVEL 8
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#define MINCOMP 2 /* won't be used, but must be defined */
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#define ZBUF 10
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u_int32_t deflate_global(u_int8_t *, u_int32_t, int, u_int8_t **);
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u_int32_t gzip_global(u_int8_t *, u_int32_t, int, u_int8_t **);
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void *z_alloc(void *, u_int, u_int);
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void z_free(void *, void *);
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struct deflate_buf {
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u_int8_t *out;
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u_int32_t size;
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int flag;
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};
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#endif /* _CRYPTO_DEFLATE_H_ */
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