1 /* SPDX-License-Identifier: GPL-2.0+ */
5 * Copyright (C) 2011-2012 Kay Sievers <kay@vrfy.org>
6 * Copyright (C) 2011 ProFUSION embedded systems
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
28 #include "module-util.h"
29 #include "string-util.h"
32 static struct kmod_ctx
*ctx
= NULL
;
34 static int load_module(struct udev
*udev
, const char *alias
) {
35 _cleanup_(kmod_module_unref_listp
) struct kmod_list
*list
= NULL
;
39 err
= kmod_module_new_from_lookup(ctx
, alias
, &list
);
44 log_debug("No module matches '%s'", alias
);
46 kmod_list_foreach(l
, list
) {
47 _cleanup_(kmod_module_unrefp
) struct kmod_module
*mod
= NULL
;
49 mod
= kmod_module_get_module(l
);
51 err
= kmod_module_probe_insert_module(mod
, KMOD_PROBE_APPLY_BLACKLIST
, NULL
, NULL
, NULL
, NULL
);
52 if (err
== KMOD_PROBE_APPLY_BLACKLIST
)
53 log_debug("Module '%s' is blacklisted", kmod_module_get_name(mod
));
55 log_debug("Inserted '%s'", kmod_module_get_name(mod
));
57 log_debug("Failed to insert '%s'", kmod_module_get_name(mod
));
63 _printf_(6,0) static void udev_kmod_log(void *data
, int priority
, const char *file
, int line
, const char *fn
, const char *format
, va_list args
) {
64 log_internalv(priority
, 0, file
, line
, fn
, format
, args
);
67 static int builtin_kmod(struct udev_device
*dev
, int argc
, char *argv
[], bool test
) {
68 struct udev
*udev
= udev_device_get_udev(dev
);
74 if (argc
< 3 || !streq(argv
[1], "load")) {
75 log_error("expect: %s load <module>", argv
[0]);
79 for (i
= 2; argv
[i
]; i
++) {
80 log_debug("Execute '%s' '%s'", argv
[1], argv
[i
]);
81 load_module(udev
, argv
[i
]);
87 /* called at udev startup and reload */
88 static int builtin_kmod_init(struct udev
*udev
) {
92 ctx
= kmod_new(NULL
, NULL
);
96 log_debug("Load module index");
97 kmod_set_log_fn(ctx
, udev_kmod_log
, udev
);
98 kmod_load_resources(ctx
);
102 /* called on udev shutdown and reload request */
103 static void builtin_kmod_exit(struct udev
*udev
) {
104 log_debug("Unload module index");
105 ctx
= kmod_unref(ctx
);
108 /* called every couple of seconds during event activity; 'true' if config has changed */
109 static bool builtin_kmod_validate(struct udev
*udev
) {
110 log_debug("Validate module index");
113 return (kmod_validate_resources(ctx
) != KMOD_RESOURCES_OK
);
116 const struct udev_builtin udev_builtin_kmod
= {
119 .init
= builtin_kmod_init
,
120 .exit
= builtin_kmod_exit
,
121 .validate
= builtin_kmod_validate
,
122 .help
= "Kernel module loader",