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_word(const char *word) {
75 if (startswith(word, "modules-load=")) {
76 r = add_modules(word + 13);
80 } else if (startswith(word, "rd.modules-load=")) {
82 r = add_modules(word + 16);
91 static int load_module(struct kmod_ctx *ctx, const char *m) {
92 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
93 struct kmod_list *itr, *modlist = NULL;
96 log_debug("load: %s", m);
98 r = kmod_module_new_from_lookup(ctx, m, &modlist);
100 log_error("Failed to lookup alias '%s': %s", m, strerror(-r));
105 log_error("Failed to find module '%s'", m);
109 kmod_list_foreach(itr, modlist) {
110 struct kmod_module *mod;
113 mod = kmod_module_get_module(itr);
114 state = kmod_module_get_initstate(mod);
117 case KMOD_MODULE_BUILTIN:
118 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
121 case KMOD_MODULE_LIVE:
122 log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
126 err = kmod_module_probe_insert_module(mod, probe_flags,
127 NULL, NULL, NULL, NULL);
130 log_info("Inserted module '%s'", kmod_module_get_name(mod));
131 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
132 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
134 log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
140 kmod_module_unref(mod);
143 kmod_module_unref_list(modlist);
148 static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
149 _cleanup_fclose_ FILE *f = NULL;
155 r = search_and_fopen_nulstr(path, "re", conf_file_dirs, &f);
157 if (ignore_enoent && r == -ENOENT)
160 log_error("Failed to open %s, ignoring: %s", path, strerror(-r));
164 log_debug("apply: %s", path);
166 char line[LINE_MAX], *l;
169 if (!fgets(line, sizeof(line), f)) {
173 log_error("Failed to read file '%s', ignoring: %m", path);
180 if (strchr(COMMENTS "\n", *l))
183 k = load_module(ctx, l);
191 static int help(void) {
193 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
194 "Loads statically configured kernel modules.\n\n"
195 " -h --help Show this help\n"
196 " --version Show package version\n",
197 program_invocation_short_name);
202 static int parse_argv(int argc, char *argv[]) {
208 static const struct option options[] = {
209 { "help", no_argument, NULL, 'h' },
210 { "version", no_argument, NULL, ARG_VERSION },
219 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
227 puts(PACKAGE_STRING);
228 puts(SYSTEMD_FEATURES);
235 assert_not_reached("Unhandled option");
242 int main(int argc, char *argv[]) {
244 struct kmod_ctx *ctx;
246 r = parse_argv(argc, argv);
248 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
250 log_set_target(LOG_TARGET_AUTO);
251 log_parse_environment();
256 if (parse_proc_cmdline(parse_proc_cmdline_word) < 0)
259 ctx = kmod_new(NULL, NULL);
261 log_error("Failed to allocate memory for kmod.");
265 kmod_load_resources(ctx);
266 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
273 for (i = optind; i < argc; i++) {
274 k = apply_file(ctx, argv[i], false);
280 _cleanup_free_ char **files = NULL;
283 STRV_FOREACH(i, arg_proc_cmdline_modules) {
284 k = load_module(ctx, *i);
289 k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
291 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
297 STRV_FOREACH(fn, files) {
298 k = apply_file(ctx, *fn, true);
306 strv_free(arg_proc_cmdline_modules);
308 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;