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 int help(void) {
186 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
187 "Loads statically configured kernel modules.\n\n"
188 " -h --help Show this help\n"
189 " --version Show package version\n",
190 program_invocation_short_name);
195 static int parse_argv(int argc, char *argv[]) {
201 static const struct option options[] = {
202 { "help", no_argument, NULL, 'h' },
203 { "version", no_argument, NULL, ARG_VERSION },
212 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
220 puts(PACKAGE_STRING);
221 puts(SYSTEMD_FEATURES);
228 assert_not_reached("Unhandled option");
235 int main(int argc, char *argv[]) {
237 struct kmod_ctx *ctx;
239 r = parse_argv(argc, argv);
241 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
243 log_set_target(LOG_TARGET_AUTO);
244 log_parse_environment();
249 if (parse_proc_cmdline(parse_proc_cmdline_item) < 0)
252 ctx = kmod_new(NULL, NULL);
254 log_error("Failed to allocate memory for kmod.");
258 kmod_load_resources(ctx);
259 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
266 for (i = optind; i < argc; i++) {
267 k = apply_file(ctx, argv[i], false);
273 _cleanup_free_ char **files = NULL;
276 STRV_FOREACH(i, arg_proc_cmdline_modules) {
277 k = load_module(ctx, *i);
282 k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
284 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
290 STRV_FOREACH(fn, files) {
291 k = apply_file(ctx, *fn, true);
299 strv_free(arg_proc_cmdline_modules);
301 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;