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[] = CONF_DIRS_NULSTR("modules-load");
43 static void systemd_kmod_log(void *data, int priority, const char *file, int line,
44 const char *fn, const char *format, va_list args) {
46 DISABLE_WARNING_FORMAT_NONLITERAL;
47 log_internalv(priority, 0, file, line, fn, format, args);
51 static int add_modules(const char *p) {
52 _cleanup_strv_free_ char **k = NULL;
54 k = strv_split(p, ",");
58 if (strv_extend_strv(&arg_proc_cmdline_modules, k) < 0)
64 static int parse_proc_cmdline_item(const char *key, const char *value) {
67 if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) {
68 r = add_modules(value);
76 static int load_module(struct kmod_ctx *ctx, const char *m) {
77 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
78 struct kmod_list *itr, *modlist = NULL;
81 log_debug("load: %s", m);
83 r = kmod_module_new_from_lookup(ctx, m, &modlist);
85 log_error_errno(r, "Failed to lookup alias '%s': %m", m);
90 log_error("Failed to find module '%s'", m);
94 kmod_list_foreach(itr, modlist) {
95 struct kmod_module *mod;
98 mod = kmod_module_get_module(itr);
99 state = kmod_module_get_initstate(mod);
102 case KMOD_MODULE_BUILTIN:
103 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
106 case KMOD_MODULE_LIVE:
107 log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
111 err = kmod_module_probe_insert_module(mod, probe_flags,
112 NULL, NULL, NULL, NULL);
115 log_info("Inserted module '%s'", kmod_module_get_name(mod));
116 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
117 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
119 log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod));
124 kmod_module_unref(mod);
127 kmod_module_unref_list(modlist);
132 static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
133 _cleanup_fclose_ FILE *f = NULL;
139 r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
141 if (ignore_enoent && r == -ENOENT)
144 log_error_errno(r, "Failed to open %s, ignoring: %m", path);
148 log_debug("apply: %s", path);
150 char line[LINE_MAX], *l;
153 if (!fgets(line, sizeof(line), f)) {
157 log_error("Failed to read file '%s', ignoring: %m", path);
164 if (strchr(COMMENTS "\n", *l))
167 k = load_module(ctx, l);
175 static void help(void) {
176 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
177 "Loads statically configured kernel modules.\n\n"
178 " -h --help Show this help\n"
179 " --version Show package version\n",
180 program_invocation_short_name);
183 static int parse_argv(int argc, char *argv[]) {
189 static const struct option options[] = {
190 { "help", no_argument, NULL, 'h' },
191 { "version", no_argument, NULL, ARG_VERSION },
200 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
209 puts(PACKAGE_STRING);
210 puts(SYSTEMD_FEATURES);
217 assert_not_reached("Unhandled option");
223 int main(int argc, char *argv[]) {
225 struct kmod_ctx *ctx;
227 r = parse_argv(argc, argv);
229 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
231 log_set_target(LOG_TARGET_AUTO);
232 log_parse_environment();
237 r = parse_proc_cmdline(parse_proc_cmdline_item);
239 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
241 ctx = kmod_new(NULL, NULL);
243 log_error("Failed to allocate memory for kmod.");
247 kmod_load_resources(ctx);
248 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
255 for (i = optind; i < argc; i++) {
256 k = apply_file(ctx, argv[i], false);
262 _cleanup_free_ char **files = NULL;
265 STRV_FOREACH(i, arg_proc_cmdline_modules) {
266 k = load_module(ctx, *i);
271 k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
273 log_error_errno(k, "Failed to enumerate modules-load.d files: %m");
279 STRV_FOREACH(fn, files) {
280 k = apply_file(ctx, *fn, true);
288 strv_free(arg_proc_cmdline_modules);
290 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;