g_uzip_lzma.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2004 Max Khon
    3  * Copyright (c) 2014 Juniper Networks, Inc.
    4  * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
    5  * Copyright (c) 2010-2012 Aleksandr Rybalko
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/types.h>
   34 #include <sys/malloc.h>
   35 #include <sys/systm.h>
   36 
   37 #include <contrib/xz-embedded/linux/include/linux/xz.h>
   38 
   39 #include <geom/uzip/g_uzip.h>
   40 #include <geom/uzip/g_uzip_dapi.h>
   41 #include <geom/uzip/g_uzip_lzma.h>
   42 
   43 struct g_uzip_lzma {
   44         struct g_uzip_dapi pub;
   45         uint32_t blksz;
   46         /* XZ decoder structs */
   47         struct xz_buf b;
   48         struct xz_dec *s;
   49 };
   50 
   51 static int g_uzip_lzma_nop(struct g_uzip_dapi *, const char *);
   52 
   53 static void
   54 g_uzip_lzma_free(struct g_uzip_dapi *lzpp)
   55 {
   56         struct g_uzip_lzma *lzp;
   57 
   58         lzp = (struct g_uzip_lzma *)lzpp->pvt;
   59         if (lzp->s != NULL) {
   60                 xz_dec_end(lzp->s);
   61                 lzp->s = NULL;
   62         }
   63 
   64         free(lzp, M_GEOM_UZIP);
   65 }
   66 
   67 static int
   68 g_uzip_lzma_decompress(struct g_uzip_dapi *lzpp, const char *gp_name,
   69     void *ibp, size_t ilen, void *obp)
   70 {
   71         struct g_uzip_lzma *lzp;
   72         int err;
   73 
   74         lzp = (struct g_uzip_lzma *)lzpp->pvt;
   75 
   76         lzp->b.in = ibp;
   77         lzp->b.out = obp;
   78         lzp->b.in_pos = lzp->b.out_pos = 0;
   79         lzp->b.in_size = ilen;
   80         lzp->b.out_size = lzp->blksz;
   81         err = (xz_dec_run(lzp->s, &lzp->b) != XZ_STREAM_END) ? 1 : 0;
   82         /* TODO decoder recovery, if needed */
   83         if (err != 0) {
   84                 printf("%s: ibp=%p, obp=%p, in_pos=%jd, out_pos=%jd, "
   85                     "in_size=%jd, out_size=%jd\n", __func__, ibp, obp,
   86                     (intmax_t)lzp->b.in_pos, (intmax_t)lzp->b.out_pos,
   87                     (intmax_t)lzp->b.in_size, (intmax_t)lzp->b.out_size);
   88         }
   89 
   90         return (err);
   91 }
   92 
   93 static int
   94 LZ4_compressBound(int isize)
   95 {
   96 
   97         return (isize + (isize / 255) + 16);
   98 }
   99 
  100 struct g_uzip_dapi *
  101 g_uzip_lzma_ctor(uint32_t blksz)
  102 {
  103         struct g_uzip_lzma *lzp;
  104 
  105         lzp = malloc(sizeof(struct g_uzip_lzma), M_GEOM_UZIP, M_WAITOK);
  106         lzp->s = xz_dec_init(XZ_SINGLE, 0);
  107         if (lzp->s == NULL) {
  108                 goto e1;
  109         }
  110         lzp->blksz = blksz;
  111         lzp->pub.max_blen = LZ4_compressBound(blksz);
  112         lzp->pub.decompress = &g_uzip_lzma_decompress;
  113         lzp->pub.free = &g_uzip_lzma_free;
  114         lzp->pub.rewind = &g_uzip_lzma_nop;
  115         lzp->pub.pvt = lzp;
  116         return (&lzp->pub);
  117 e1:
  118         free(lzp, M_GEOM_UZIP);
  119         return (NULL);
  120 }
  121 
  122 static int
  123 g_uzip_lzma_nop(struct g_uzip_dapi *zpp, const char *gp_name)
  124 {
  125 
  126         return (0);
  127 }

Cache object: 97dd1af949201541823cc1268c84f393

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/geom/uzip/g_uzip_lzma.c

FreeBSD/Linux Kernel Cross Reference
sys/geom/uzip/g_uzip_lzma.c