xz_mod.c

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    1 /*-
    2  * Copyright (c) 2010-2012 Aleksandr Rybalko
    3  * Copyright (c) 2019 Mellanox Technologies
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 #include <sys/malloc.h>
   32 #include <sys/kernel.h>
   33 #include <sys/module.h>
   34 #include "xz.h"
   35 #include "xz_malloc.h"
   36 
   37 /* Wraper for XZ decompressor memory pool */
   38 
   39 static MALLOC_DEFINE(XZ_DEC, "XZ_DEC", "XZ decompressor data");
   40 
   41 void *
   42 xz_malloc(unsigned long size)
   43 {
   44         void *addr;
   45 
   46         addr = malloc(size, XZ_DEC, M_NOWAIT);
   47         return (addr);
   48 }
   49 
   50 void
   51 xz_free(void *addr)
   52 {
   53 
   54         free(addr, XZ_DEC);
   55 }
   56 
   57 static int
   58 xz_module_event_handler(module_t mod, int what, void *arg)
   59 {
   60         int error;
   61 
   62         switch (what) {
   63         case MOD_LOAD:
   64 #if XZ_INTERNAL_CRC32
   65                 xz_crc32_init();
   66 #endif
   67 #if XZ_INTERNAL_CRC64
   68                 xz_crc64_init();
   69 #endif
   70                 error = 0;
   71                 break;
   72         case MOD_UNLOAD:
   73                 error = 0;
   74                 break;
   75         default:
   76                 error = EOPNOTSUPP;
   77                 break;
   78         }
   79 
   80         return (error);
   81 }
   82 
   83 static moduledata_t xz_moduledata = {
   84         "xz",
   85         xz_module_event_handler,
   86         NULL
   87 };
   88 
   89 DECLARE_MODULE(xz, xz_moduledata, SI_SUB_INIT_IF, SI_ORDER_ANY);
   90 MODULE_VERSION(xz, 1);

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FreeBSD/Linux Kernel Cross Reference sys/dev/xz/xz_mod.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/xz/xz_mod.c