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
|
/*
* load kernel modules
*
* Copyright (C) 2011 Kay Sievers <kay.sievers@vrfy.org>
* Copyright (C) 2011 ProFUSION embedded systems
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <libkmod.h>
#include "udev.h"
static struct kmod_ctx *ctx;
static int load_module(struct udev *udev, const char *alias)
{
struct kmod_list *list = NULL;
struct kmod_list *l;
int err;
err = kmod_module_new_from_lookup(ctx, alias, &list);
if (err < 0)
return err;
if (list == NULL)
log_debug("no module matches '%s'\n", alias);
kmod_list_foreach(l, list) {
struct kmod_module *mod = kmod_module_get_module(l);
err = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL);
if (err == KMOD_PROBE_APPLY_BLACKLIST)
log_debug("module '%s' is blacklisted\n", kmod_module_get_name(mod));
else if (err == 0)
log_debug("inserted '%s'\n", kmod_module_get_name(mod));
else
log_debug("failed to insert '%s'\n", kmod_module_get_name(mod));
kmod_module_unref(mod);
}
kmod_module_unref_list(list);
return err;
}
static void udev_kmod_log(void *data, int priority, const char *file, int line,
const char *fn, const char *format, va_list args)
{
udev_main_log(data, priority, file, line, fn, format, args);
}
/* needs to re-instantiate the context after a reload */
static int builtin_kmod(struct udev_device *dev, int argc, char *argv[], bool test)
{
struct udev *udev = udev_device_get_udev(dev);
int i;
if (!ctx) {
ctx = kmod_new(NULL, NULL);
if (!ctx)
return -ENOMEM;
log_debug("load module index\n");
kmod_set_log_fn(ctx, udev_kmod_log, udev);
kmod_load_resources(ctx);
}
if (argc < 3 || strcmp(argv[1], "load")) {
log_error("expect: %s load <module>\n", argv[0]);
return EXIT_FAILURE;
}
for (i = 2; argv[i]; i++) {
log_debug("execute '%s' '%s'\n", argv[1], argv[i]);
load_module(udev, argv[i]);
}
return EXIT_SUCCESS;
}
/* called at udev startup */
static int builtin_kmod_init(struct udev *udev)
{
if (ctx)
return 0;
ctx = kmod_new(NULL, NULL);
if (!ctx)
return -ENOMEM;
log_debug("load module index\n");
kmod_set_log_fn(ctx, udev_kmod_log, udev);
kmod_load_resources(ctx);
return 0;
}
/* called on udev shutdown and reload request */
static void builtin_kmod_exit(struct udev *udev)
{
log_debug("unload module index\n");
ctx = kmod_unref(ctx);
}
/* called every couple of seconds during event activity; 'true' if config has changed */
static bool builtin_kmod_validate(struct udev *udev)
{
log_debug("validate module index\n");
if (kmod_validate_resources(ctx) != KMOD_RESOURCES_OK)
return true;
return false;
}
const struct udev_builtin udev_builtin_kmod = {
.name = "kmod",
.cmd = builtin_kmod,
.init = builtin_kmod_init,
.exit = builtin_kmod_exit,
.validate = builtin_kmod_validate,
.help = "kernel module loader",
.run_once = false,
};
|
