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, ",");
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, "modules-load=")) {
95 r = add_modules(word + 7);
99 } else if (startswith(word, "rd.modules-load=")) {
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;
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));
133 log_error("Failed to find module '%s'", m);
137 kmod_list_foreach(itr, modlist) {
138 struct kmod_module *mod;
141 mod = kmod_module_get_module(itr);
142 state = kmod_module_get_initstate(mod);
145 case KMOD_MODULE_BUILTIN:
146 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
149 case KMOD_MODULE_LIVE:
150 log_info("Module '%s' is already loaded", kmod_module_get_name(mod));
154 err = kmod_module_probe_insert_module(mod, probe_flags,
155 NULL, NULL, NULL, NULL);
158 log_info("Inserted module '%s'", kmod_module_get_name(mod));
159 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
160 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
162 log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
168 kmod_module_unref(mod);
171 kmod_module_unref_list(modlist);
176 int main(int argc, char *argv[]) {
177 int r = EXIT_FAILURE, k;
178 char **files, **fn, **i;
179 struct kmod_ctx *ctx;
182 log_error("This program takes no argument.");
186 log_set_target(LOG_TARGET_AUTO);
187 log_parse_environment();
192 if (parse_proc_cmdline() < 0)
195 ctx = kmod_new(NULL, NULL);
197 log_error("Failed to allocate memory for kmod.");
201 kmod_load_resources(ctx);
202 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
206 STRV_FOREACH(i, arg_proc_cmdline_modules) {
207 k = load_module(ctx, *i);
212 k = conf_files_list(&files, ".conf",
213 "/etc/modules-load.d",
214 "/run/modules-load.d",
215 "/usr/local/lib/modules-load.d",
216 "/usr/lib/modules-load.d",
217 #ifdef HAVE_SPLIT_USR
218 "/lib/modules-load.d",
222 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
227 STRV_FOREACH(fn, files) {
230 f = fopen(*fn, "re");
235 log_error("Failed to open %s: %m", *fn);
240 log_debug("apply: %s\n", *fn);
242 char line[LINE_MAX], *l;
244 if (!fgets(line, sizeof(line), f))
248 if (*l == '#' || *l == 0)
251 k = load_module(ctx, l);
257 log_error("Failed to read from file: %m");
267 strv_free(arg_proc_cmdline_modules);