usr/src/uts/common/sys/zmod.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _ZMOD_H
  28 #define _ZMOD_H
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /*
  35  * zmod - RFC-1950-compatible decompression routines
  36  *
  37  * This file provides the public interfaces to zmod, an in-kernel RFC 1950
  38  * decompression library.  More information about the implementation of these
  39  * interfaces can be found in the usr/src/uts/common/zmod/ directory.
  40  */
  41
  42 #define Z_OK            0
  43 #define Z_STREAM_END    1
  44 #define Z_NEED_DICT     2
  45 #define Z_ERRNO         (-1)
  46 #define Z_STREAM_ERROR  (-2)
  47 #define Z_DATA_ERROR    (-3)
  48 #define Z_MEM_ERROR     (-4)
  49 #define Z_BUF_ERROR     (-5)
  50 #define Z_VERSION_ERROR (-6)
  51
  52 #define Z_NO_COMPRESSION        0
  53 #define Z_BEST_SPEED            1
  54 #define Z_BEST_COMPRESSION      9
  55 #define Z_DEFAULT_COMPRESSION   (-1)
  56
  57 extern int z_uncompress(void *, size_t *, const void *, size_t);
  58 extern int z_compress(void *, size_t *, const void *, size_t);
  59 extern int z_compress_level(void *, size_t *, const void *, size_t, int);
  60 extern const char *z_strerror(int);
  61
  62 #ifdef  __cplusplus
  63 }
  64 #endif
  65
  66 #endif  /* _ZMOD_H */