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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*-
* Copyright (c) 1997 Doug Rabson
* 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.
*
* $FreeBSD$
*/
#ifndef _SYS_MODULE_H_
#define _SYS_MODULE_H_
/*
* Module metadata types
*/
#define MDT_DEPEND 1 /* argument is a module name */
#define MDT_MODULE 2 /* module declaration */
#define MDT_VERSION 3 /* module version(s) */
#define MDT_STRUCT_VERSION 1 /* version of metadata structure */
#define MDT_SETNAME "modmetadata_set"
typedef enum modeventtype {
MOD_LOAD,
MOD_UNLOAD,
MOD_SHUTDOWN
} modeventtype_t;
typedef struct module *module_t;
typedef int (*modeventhand_t)(module_t mod, int /*modeventtype_t*/ what,
void *arg);
/*
* Struct for registering modules statically via SYSINIT.
*/
typedef struct moduledata {
char *name; /* module name */
modeventhand_t evhand; /* event handler */
void *priv; /* extra data */
} moduledata_t;
/*
* A module can use this to report module specific data to
* the user via kldstat(2).
*/
typedef union modspecific {
int intval;
u_int uintval;
long longval;
u_long ulongval;
} modspecific_t;
/*
* Module dependency declarartion
*/
struct mod_depend {
int md_ver_minimum;
int md_ver_preferred;
int md_ver_maximum;
};
/*
* Module version declaration
*/
struct mod_version {
int mv_version;
};
struct mod_metadata {
int md_version; /* structure version MDTV_* */
int md_type; /* type of entry MDT_* */
void *md_data; /* specific data */
char *md_cval; /* common string label */
};
#ifdef _KERNEL
#include <sys/linker_set.h>
#define MODULE_METADATA(uniquifier, type, data, cval) \
static struct mod_metadata _mod_metadata ## uniquifier = { \
MDT_STRUCT_VERSION, \
type, \
data, \
cval \
}; \
DATA_SET(modmetadata_set, _mod_metadata ## uniquifier)
#define MODULE_DEPEND(module, mdepend, vmin, vpref, vmax) \
static struct mod_depend _ ##module ## _depend_on_ ## mdepend = { \
vmin, \
vpref, \
vmax \
}; \
MODULE_METADATA(_md_ ##module ## _on_ ##mdepend, MDT_DEPEND, \
&_ ##module ## _depend_on_ ##mdepend, #mdepend)
#define DECLARE_MODULE(name, data, sub, order) \
MODULE_METADATA(_md_ ##name, MDT_MODULE, &data, #name); \
SYSINIT(name##module, sub, order, module_register_init, &data) \
struct __hack
#define MODULE_VERSION(module, version) \
static struct mod_version _ ## module ## _version = { \
version \
}; \
MODULE_METADATA(_ ## module ## _version, MDT_VERSION, \
& _ ## module ## _version, #module)
void module_register_init(const void *data);
struct linker_file;
int module_register(const struct moduledata *data, struct linker_file *lf);
module_t module_lookupbyname(const char *name);
module_t module_lookupbyid(int modid);
void module_reference(module_t mod);
void module_release(module_t mod);
int module_unload(module_t mod);
int module_getid(module_t mod);
module_t module_getfnext(module_t mod);
void module_setspecific(module_t mod, modspecific_t *datap);
#ifdef MOD_DEBUG
extern int mod_debug;
#define MOD_DEBUG_REFS 1
#define MOD_DPF(cat, args) \
do { \
if (mod_debug & MOD_DEBUG_##cat) printf args; \
} while (0)
#else
#define MOD_DPF(cat, args)
#endif
#endif /* _KERNEL */
#define MAXMODNAME 32
struct module_stat {
int version; /* set to sizeof(struct module_stat) */
char name[MAXMODNAME];
int refs;
int id;
modspecific_t data;
};
#ifndef _KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
int modnext(int modid);
int modfnext(int modid);
int modstat(int modid, struct module_stat* stat);
int modfind(const char *name);
__END_DECLS
#endif
#endif /* !_SYS_MODULE_H_ */
|
