freebsd-dev/sys/dev/xz/xz_mod.c

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/*-
* Copyright (c) 2010-2012 Aleksandr Rybalko
* Copyright (c) 2019 Mellanox Technologies
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include "xz.h"
#include "xz_malloc.h"
/* Wraper for XZ decompressor memory pool */
static MALLOC_DEFINE(XZ_DEC, "XZ_DEC", "XZ decompressor data");
void *
xz_malloc(unsigned long size)
{
void *addr;
addr = malloc(size, XZ_DEC, M_NOWAIT);
return (addr);
}
void
xz_free(void *addr)
{
free(addr, XZ_DEC);
}
static int
xz_module_event_handler(module_t mod, int what, void *arg)
{
int error;
switch (what) {
case MOD_LOAD:
#if XZ_INTERNAL_CRC32
xz_crc32_init();
#endif
#if XZ_INTERNAL_CRC64
xz_crc64_init();
#endif
error = 0;
break;
case MOD_UNLOAD:
error = 0;
break;
default:
error = EOPNOTSUPP;
break;
}
return (error);
}
static moduledata_t xz_moduledata = {
"xz",
xz_module_event_handler,
NULL
};
DECLARE_MODULE(xz, xz_moduledata, SI_SUB_INIT_IF, SI_ORDER_ANY);
MODULE_VERSION(xz, 1);