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/>.
34 #include "conf-files.h"
37 static char **arg_proc_cmdline_modules = NULL;
39 #pragma GCC diagnostic push
40 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
41 static void systemd_kmod_log(void *data, int priority, const char *file, int line,
42 const char *fn, const char *format, va_list args)
44 log_metav(priority, file, line, fn, format, args);
46 #pragma GCC diagnostic pop
48 static int add_modules(const char *p) {
51 k = strv_split(p, ",");
55 t = strv_merge(arg_proc_cmdline_modules, k);
60 strv_free(arg_proc_cmdline_modules);
61 arg_proc_cmdline_modules = t;
66 static int parse_proc_cmdline(void) {
67 char *line, *w, *state;
71 if (detect_container(NULL) > 0)
74 r = read_one_line_file("/proc/cmdline", &line);
76 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
80 FOREACH_WORD_QUOTED(w, l, line, state) {
89 if (startswith(word, "modules-load=")) {
91 r = add_modules(word + 13);
95 } else if (startswith(word, "rd.modules-load=")) {
98 r = add_modules(word + 16);
115 static int load_module(struct kmod_ctx *ctx, const char *m) {
116 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
117 struct kmod_list *itr, *modlist = NULL;
120 log_debug("load: %s\n", m);
122 r = kmod_module_new_from_lookup(ctx, m, &modlist);
124 log_error("Failed to lookup alias '%s': %s", m, strerror(-r));
129 log_error("Failed to find module '%s'", m);
133 kmod_list_foreach(itr, modlist) {
134 struct kmod_module *mod;
137 mod = kmod_module_get_module(itr);
138 state = kmod_module_get_initstate(mod);
141 case KMOD_MODULE_BUILTIN:
142 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
145 case KMOD_MODULE_LIVE:
146 log_info("Module '%s' is already loaded", kmod_module_get_name(mod));
150 err = kmod_module_probe_insert_module(mod, probe_flags,
151 NULL, NULL, NULL, NULL);
154 log_info("Inserted module '%s'", kmod_module_get_name(mod));
155 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
156 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
158 log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
164 kmod_module_unref(mod);
167 kmod_module_unref_list(modlist);
172 int main(int argc, char *argv[]) {
173 int r = EXIT_FAILURE, k;
174 char **files = NULL, **fn, **i;
175 struct kmod_ctx *ctx;
178 log_error("This program takes no argument.");
182 log_set_target(LOG_TARGET_AUTO);
183 log_parse_environment();
188 if (parse_proc_cmdline() < 0)
191 ctx = kmod_new(NULL, NULL);
193 log_error("Failed to allocate memory for kmod.");
197 kmod_load_resources(ctx);
198 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
202 STRV_FOREACH(i, arg_proc_cmdline_modules) {
203 k = load_module(ctx, *i);
208 k = conf_files_list(&files, ".conf",
209 "/etc/modules-load.d",
210 "/run/modules-load.d",
211 "/usr/local/lib/modules-load.d",
212 "/usr/lib/modules-load.d",
213 #ifdef HAVE_SPLIT_USR
214 "/lib/modules-load.d",
218 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
223 STRV_FOREACH(fn, files) {
226 f = fopen(*fn, "re");
231 log_error("Failed to open %s: %m", *fn);
236 log_debug("apply: %s\n", *fn);
238 char line[LINE_MAX], *l;
240 if (!fgets(line, sizeof(line), f))
244 if (*l == '#' || *l == 0)
247 k = load_module(ctx, l);
253 log_error("Failed to read from file: %m");
263 strv_free(arg_proc_cmdline_modules);