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/>.
35 #include "conf-files.h"
39 static char **arg_proc_cmdline_modules = NULL;
41 static const char conf_file_dirs[] =
42 "/etc/modules-load.d\0"
43 "/run/modules-load.d\0"
44 "/usr/local/lib/modules-load.d\0"
45 "/usr/lib/modules-load.d\0"
47 "/lib/modules-load.d\0"
51 static void systemd_kmod_log(void *data, int priority, const char *file, int line,
52 const char *fn, const char *format, va_list args) {
54 DISABLE_WARNING_FORMAT_NONLITERAL;
55 log_metav(priority, file, line, fn, format, args);
59 static int add_modules(const char *p) {
60 _cleanup_strv_free_ char **k = NULL;
62 k = strv_split(p, ",");
66 if (strv_extend_strv(&arg_proc_cmdline_modules, k) < 0)
72 static int parse_proc_cmdline_item(const char *key, const char *value) {
75 if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) {
76 r = add_modules(value);
84 static int load_module(struct kmod_ctx *ctx, const char *m) {
85 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
86 struct kmod_list *itr, *modlist = NULL;
89 log_debug("load: %s", m);
91 r = kmod_module_new_from_lookup(ctx, m, &modlist);
93 log_error("Failed to lookup alias '%s': %s", m, strerror(-r));
98 log_error("Failed to find module '%s'", m);
102 kmod_list_foreach(itr, modlist) {
103 struct kmod_module *mod;
106 mod = kmod_module_get_module(itr);
107 state = kmod_module_get_initstate(mod);
110 case KMOD_MODULE_BUILTIN:
111 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
114 case KMOD_MODULE_LIVE:
115 log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
119 err = kmod_module_probe_insert_module(mod, probe_flags,
120 NULL, NULL, NULL, NULL);
123 log_info("Inserted module '%s'", kmod_module_get_name(mod));
124 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
125 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
127 log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
133 kmod_module_unref(mod);
136 kmod_module_unref_list(modlist);
141 static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
142 _cleanup_fclose_ FILE *f = NULL;
148 r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
150 if (ignore_enoent && r == -ENOENT)
153 log_error("Failed to open %s, ignoring: %s", path, strerror(-r));
157 log_debug("apply: %s", path);
159 char line[LINE_MAX], *l;
162 if (!fgets(line, sizeof(line), f)) {
166 log_error("Failed to read file '%s', ignoring: %m", path);
173 if (strchr(COMMENTS "\n", *l))
176 k = load_module(ctx, l);
184 static void help(void) {
185 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
186 "Loads statically configured kernel modules.\n\n"
187 " -h --help Show this help\n"
188 " --version Show package version\n",
189 program_invocation_short_name);
192 static int parse_argv(int argc, char *argv[]) {
198 static const struct option options[] = {
199 { "help", no_argument, NULL, 'h' },
200 { "version", no_argument, NULL, ARG_VERSION },
209 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
218 puts(PACKAGE_STRING);
219 puts(SYSTEMD_FEATURES);
226 assert_not_reached("Unhandled option");
232 int main(int argc, char *argv[]) {
234 struct kmod_ctx *ctx;
236 r = parse_argv(argc, argv);
238 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
240 log_set_target(LOG_TARGET_AUTO);
241 log_parse_environment();
246 if (parse_proc_cmdline(parse_proc_cmdline_item) < 0)
249 ctx = kmod_new(NULL, NULL);
251 log_error("Failed to allocate memory for kmod.");
255 kmod_load_resources(ctx);
256 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
263 for (i = optind; i < argc; i++) {
264 k = apply_file(ctx, argv[i], false);
270 _cleanup_free_ char **files = NULL;
273 STRV_FOREACH(i, arg_proc_cmdline_modules) {
274 k = load_module(ctx, *i);
279 k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
281 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
287 STRV_FOREACH(fn, files) {
288 k = apply_file(ctx, *fn, true);
296 strv_free(arg_proc_cmdline_modules);
298 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;