1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*
* ethertap device for MacOSX.
*
* Kext definition (it is a mach kmod really...)
*/
/*
* Copyright (c) 2011 Mattias Nissler <mattias.nissler@gmx.de>
*
* 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.
* 3. The name of the author may not be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "tap.h"
#include "mem.h"
extern "C" {
#include <sys/param.h>
#include <mach/kmod.h>
static tap_manager *mgr;
/*
* start function. called when the kext gets loaded.
*/
static kern_return_t tap_module_start(struct kmod_info *ki, void *data)
{
mem_initialize(TAP_FAMILY_NAME);
/* initialize locking */
if (!tt_lock::initialize())
return KMOD_RETURN_FAILURE;
/* create a tap manager that will handle the rest */
mgr = new tap_manager();
if (mgr != NULL) {
if (mgr->initialize(TAP_IF_COUNT, (char *) TAP_FAMILY_NAME))
return KMOD_RETURN_SUCCESS;
delete mgr;
mgr = NULL;
/* clean up locking */
tt_lock::shutdown();
}
return KMOD_RETURN_FAILURE;
}
/*
* stop function. called when the kext should be unloaded. unloading can be prevented by
* returning failure
*/
static kern_return_t tap_module_stop(struct kmod_info *ki, void *data)
{
if (mgr != NULL) {
if (!mgr->shutdown())
return KMOD_RETURN_FAILURE;
delete mgr;
mgr = NULL;
}
/* clean up locking */
tt_lock::shutdown();
mem_shutdown();
return KMOD_RETURN_SUCCESS;
}
KMOD_DECL(tap, TAP_KEXT_VERSION)
}
|
