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_meta(priority, file, line, fn, format, args);
46 #pragma GCC diagnostic pop
48 static int add_modules(const char *p) {
51 k = strv_split(p, ",");
53 log_error("Out of memory");
57 t = strv_merge(arg_proc_cmdline_modules, k);
60 log_error("Out of memory");
64 strv_free(arg_proc_cmdline_modules);
65 arg_proc_cmdline_modules = t;
70 static int parse_proc_cmdline(void) {
71 char *line, *w, *state;
75 if (detect_container(NULL) > 0)
78 r = read_one_line_file("/proc/cmdline", &line);
80 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
84 FOREACH_WORD_QUOTED(w, l, line, state) {
93 if (startswith(word, "driver=")) {
95 r = add_modules(word + 7);
99 } else if (startswith(word, "rd.driver=")) {
102 r = add_modules(word + 10);
119 static int load_module(struct kmod_ctx *ctx, const char *m) {
120 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST|KMOD_PROBE_IGNORE_LOADED;
121 struct kmod_list *itr, *modlist = NULL;
124 log_debug("load: %s\n", m);
126 r = kmod_module_new_from_lookup(ctx, m, &modlist);
128 log_error("Failed to lookup alias '%s': %s", m, strerror(-r));
132 kmod_list_foreach(itr, modlist) {
133 struct kmod_module *mod;
136 mod = kmod_module_get_module(itr);
137 err = kmod_module_probe_insert_module(mod, probe_flags,
138 NULL, NULL, NULL, NULL);
141 log_info("Inserted module '%s'", kmod_module_get_name(mod));
142 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
143 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
145 log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
150 kmod_module_unref(mod);
153 kmod_module_unref_list(modlist);
158 int main(int argc, char *argv[]) {
159 int r = EXIT_FAILURE, k;
160 char **files, **fn, **i;
161 struct kmod_ctx *ctx;
164 log_error("This program takes no argument.");
168 log_set_target(LOG_TARGET_AUTO);
169 log_parse_environment();
174 if (parse_proc_cmdline() < 0)
177 ctx = kmod_new(NULL, NULL);
179 log_error("Failed to allocate memory for kmod.");
183 kmod_load_resources(ctx);
184 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
188 STRV_FOREACH(i, arg_proc_cmdline_modules) {
189 k = load_module(ctx, *i);
194 k = conf_files_list(&files, ".conf",
195 "/etc/modules-load.d",
196 "/run/modules-load.d",
197 "/usr/local/lib/modules-load.d",
198 "/usr/lib/modules-load.d",
199 #ifdef HAVE_SPLIT_USR
200 "/lib/modules-load.d",
204 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
209 STRV_FOREACH(fn, files) {
212 f = fopen(*fn, "re");
217 log_error("Failed to open %s: %m", *fn);
222 log_debug("apply: %s\n", *fn);
224 char line[LINE_MAX], *l;
226 if (!fgets(line, sizeof(line), f))
230 if (*l == '#' || *l == 0)
233 k = load_module(ctx, l);
239 log_error("Failed to read from file: %m");
249 strv_free(arg_proc_cmdline_modules);