FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/linux/spl/sys/zmod.h

     /*
      *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
      *  Copyright (C) 2007 The Regents of the University of California.
      *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
      *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
      *  UCRL-CODE-235197
      *
      *  This file is part of the SPL, Solaris Porting Layer.
      *
     *  The SPL is free software; you can redistribute it and/or modify it
     *  under the terms of the GNU General Public License as published by the
     *  Free Software Foundation; either version 2 of the License, or (at your
     *  option) any later version.
     *
     *  The SPL is distributed in the hope that it will be useful, but WITHOUT
     *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     *  for more details.
     *
     *  You should have received a copy of the GNU General Public License along
     *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
     *
     *
     *  z_compress_level/z_uncompress are nearly identical copies of the
     *  compress2/uncompress functions provided by the official zlib package
     *  available at http://zlib.net/.  The only changes made we to slightly
     *  adapt the functions called to match the linux kernel implementation
     *  of zlib.  The full zlib license follows:
     *
     *  zlib.h -- interface of the 'zlib' general purpose compression library
     *  version 1.2.5, April 19th, 2010
     *
     *  Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
     *
     *  This software is provided 'as-is', without any express or implied
     *  warranty.  In no event will the authors be held liable for any damages
     *  arising from the use of this software.
     *
     *  Permission is granted to anyone to use this software for any purpose,
     *  including commercial applications, and to alter it and redistribute it
     *  freely, subject to the following restrictions:
     *
     *  1. The origin of this software must not be misrepresented; you must not
     *     claim that you wrote the original software. If you use this software
     *     in a product, an acknowledgment in the product documentation would be
     *     appreciated but is not required.
     *  2. Altered source versions must be plainly marked as such, and must not be
     *     misrepresented as being the original software.
     *  3. This notice may not be removed or altered from any source distribution.
     *
     *  Jean-loup Gailly
     *  Mark Adler
     */
    
    #ifndef _SPL_ZMOD_H
    #define _SPL_ZMOD_H
    
    #include <sys/types.h>
    #include <linux/zlib.h>
    
    extern int z_compress_level(void *dest, size_t *destLen, const void *source,
        size_t sourceLen, int level);
    extern int z_uncompress(void *dest, size_t *destLen, const void *source,
        size_t sourceLen);
    
    int spl_zlib_init(void);
    void spl_zlib_fini(void);
    
    #endif /* SPL_ZMOD_H */

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