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Diffstat (limited to 'include/spl/sys/zmod.h')
| -rw-r--r-- | include/spl/sys/zmod.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/include/spl/sys/zmod.h b/include/spl/sys/zmod.h new file mode 100644 index 000000000..95c1a3ed7 --- /dev/null +++ b/include/spl/sys/zmod.h @@ -0,0 +1,78 @@ +/* + * 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 <[email protected]>. + * UCRL-CODE-235197 + * + * This file is part of the SPL, Solaris Porting Layer. + * For details, see <http://zfsonlinux.org/>. + * + * 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> + +#ifdef HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE +#define spl_zlib_deflate_workspacesize(wb, ml) \ + zlib_deflate_workspacesize(wb, ml) +#else +#define spl_zlib_deflate_workspacesize(wb, ml) \ + zlib_deflate_workspacesize() +#endif /* HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE */ + +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 */ |