FreeBSD/Linux Kernel Cross Reference
sys/geom/uzip/g_uzip_cloop.h

     /*
      * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    /* CLOOP format and related constants */
    
    /*
     * Integer values (block size, number of blocks, offsets)
     * are stored in big-endian (network) order on disk.
     */
    
    #define CLOOP_MAGIC_LEN 128
    #define CLOOP_OFS_COMPR 0x0b
    #define CLOOP_OFS_VERSN (CLOOP_OFS_COMPR + 1)
    
    #define CLOOP_MAJVER_2  '2'
    #define CLOOP_MAJVER_3  '3'
    #define CLOOP_MAJVER_4  '4'
    
    #define CLOOP_COMP_LIBZ         'V'
    #define CLOOP_COMP_LIBZ_DDP     'v'
    #define CLOOP_COMP_LZMA         'L'
    #define CLOOP_COMP_LZMA_DDP     'l'
    #define CLOOP_COMP_ZSTD         'Z'
    #define CLOOP_COMP_ZSTD_DDP     'z'
    
    #define CLOOP_MINVER_LZMA       CLOOP_MAJVER_3
    #define CLOOP_MINVER_ZLIB       CLOOP_MAJVER_2
    #define CLOOP_MINVER_ZSTD       CLOOP_MAJVER_4
    
    #define CLOOP_MINVER_RELIABLE_LASTBLKSZ CLOOP_MAJVER_4
    
    struct cloop_header {
            char magic[CLOOP_MAGIC_LEN];    /* cloop magic */
            uint32_t blksz;                 /* block size */
            uint32_t nblocks;               /* number of blocks */
    };

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