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