include/sys/zmod.h

   1 /*
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://zfsonlinux.org/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23  *
  24  *
  25  *  z_compress_level/z_uncompress are nearly identical copies of the
  26  *  compress2/uncompress functions provided by the official zlib package
  27  *  available at http://zlib.net/.  The only changes made we to slightly
  28  *  adapt the functions called to match the linux kernel implementation
  29  *  of zlib.  The full zlib license follows:
  30  *
  31  *  zlib.h -- interface of the 'zlib' general purpose compression library
  32  *  version 1.2.5, April 19th, 2010
  33  *
  34  *  Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
  35  *
  36  *  This software is provided 'as-is', without any express or implied
  37  *  warranty.  In no event will the authors be held liable for any damages
  38  *  arising from the use of this software.
  39  *
  40  *  Permission is granted to anyone to use this software for any purpose,
  41  *  including commercial applications, and to alter it and redistribute it
  42  *  freely, subject to the following restrictions:
  43  *
  44  *  1. The origin of this software must not be misrepresented; you must not
  45  *     claim that you wrote the original software. If you use this software
  46  *     in a product, an acknowledgment in the product documentation would be
  47  *     appreciated but is not required.
  48  *  2. Altered source versions must be plainly marked as such, and must not be
  49  *     misrepresented as being the original software.
  50  *  3. This notice may not be removed or altered from any source distribution.
  51  *
  52  *  Jean-loup Gailly
  53  *  Mark Adler
  54  */
  55
  56 #ifndef _SPL_ZMOD_H
  57 #define _SPL_ZMOD_H
  58
  59 #include <sys/types.h>
  60 #include <linux/zlib.h>
  61
  62 extern int z_compress_level(void *dest, size_t *destLen, const void *source,
  63     size_t sourceLen, int level);
  64 extern int z_uncompress(void *dest, size_t *destLen, const void *source,
  65     size_t sourceLen);
  66
  67 int spl_zlib_init(void);
  68 void spl_zlib_fini(void);
  69
  70 #endif /* SPL_ZMOD_H */