1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
31 #include "kmod-setup.h"
33 typedef struct Kmodule {
35 const char *directory;
36 bool (*condition_fn)(void);
39 static const KModule kmod_table[] = {
40 { "autofs4", "/sys/class/misc/autofs", NULL } ,
41 { "ipv6", "/sys/module/ipv6", NULL },
42 { "unix", "/proc/net/unix", NULL } ,
45 #pragma GCC diagnostic push
46 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
47 static void systemd_kmod_log(void *data, int priority, const char *file, int line,
48 const char *fn, const char *format, va_list args)
50 /* library logging is enabled at debug only */
51 log_metav(LOG_DEBUG, file, line, fn, format, args);
53 #pragma GCC diagnostic pop
55 int kmod_setup(void) {
57 struct kmod_ctx *ctx = NULL;
58 struct kmod_module *mod;
61 for (i = 0; i < ELEMENTSOF(kmod_table); i += 2) {
62 if (kmod_table[i].condition_fn && !kmod_table[i].condition_fn())
65 if (access(kmod_table[i].directory, F_OK) >= 0)
68 log_debug("Your kernel apparently lacks built-in %s support. Might be a good idea to compile it in. "
69 "We'll now try to work around this by loading the module...",
73 ctx = kmod_new(NULL, NULL);
75 log_error("Failed to allocate memory for kmod");
79 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
80 kmod_load_resources(ctx);
83 err = kmod_module_new_from_name(ctx, kmod_table[i].name, &mod);
85 log_error("Failed to lookup module '%s'", kmod_table[i].name);
89 err = kmod_module_probe_insert_module(mod, KMOD_PROBE_APPLY_BLACKLIST, NULL, NULL, NULL, NULL);
91 log_info("Inserted module '%s'", kmod_module_get_name(mod));
92 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
93 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
95 log_error("Failed to insert module '%s'", kmod_module_get_name(mod));
97 kmod_module_unref(mod);