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/>.
32 #include "conf-files.h"
35 static char **arg_proc_cmdline_modules = NULL;
37 static const char conf_file_dirs[] = CONF_DIRS_NULSTR("modules-load");
39 static void systemd_kmod_log(void *data, int priority, const char *file, int line,
40 const char *fn, const char *format, va_list args) {
42 DISABLE_WARNING_FORMAT_NONLITERAL;
43 log_internalv(priority, 0, file, line, fn, format, args);
47 static int add_modules(const char *p) {
48 _cleanup_strv_free_ char **k = NULL;
50 k = strv_split(p, ",");
54 if (strv_extend_strv(&arg_proc_cmdline_modules, k) < 0)
60 static int parse_proc_cmdline_item(const char *key, const char *value) {
63 if (STR_IN_SET(key, "modules-load", "rd.modules-load") && value) {
64 r = add_modules(value);
72 static int load_module(struct kmod_ctx *ctx, const char *m) {
73 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
74 struct kmod_list *itr, *modlist = NULL;
77 log_debug("load: %s", m);
79 r = kmod_module_new_from_lookup(ctx, m, &modlist);
81 return log_error_errno(r, "Failed to lookup alias '%s': %m", m);
84 log_error("Failed to find module '%s'", m);
88 kmod_list_foreach(itr, modlist) {
89 struct kmod_module *mod;
92 mod = kmod_module_get_module(itr);
93 state = kmod_module_get_initstate(mod);
96 case KMOD_MODULE_BUILTIN:
97 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
100 case KMOD_MODULE_LIVE:
101 log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
105 err = kmod_module_probe_insert_module(mod, probe_flags,
106 NULL, NULL, NULL, NULL);
109 log_info("Inserted module '%s'", kmod_module_get_name(mod));
110 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
111 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
113 log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod));
118 kmod_module_unref(mod);
121 kmod_module_unref_list(modlist);
126 static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
127 _cleanup_fclose_ FILE *f = NULL;
133 r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
135 if (ignore_enoent && r == -ENOENT)
138 return log_error_errno(r, "Failed to open %s, ignoring: %m", path);
141 log_debug("apply: %s", path);
143 char line[LINE_MAX], *l;
146 if (!fgets(line, sizeof(line), f)) {
150 log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
157 if (strchr(COMMENTS "\n", *l))
160 k = load_module(ctx, l);
168 static void help(void) {
169 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
170 "Loads statically configured kernel modules.\n\n"
171 " -h --help Show this help\n"
172 " --version Show package version\n",
173 program_invocation_short_name);
176 static int parse_argv(int argc, char *argv[]) {
182 static const struct option options[] = {
183 { "help", no_argument, NULL, 'h' },
184 { "version", no_argument, NULL, ARG_VERSION },
193 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
202 puts(PACKAGE_STRING);
203 puts(SYSTEMD_FEATURES);
210 assert_not_reached("Unhandled option");
216 int main(int argc, char *argv[]) {
218 struct kmod_ctx *ctx;
220 r = parse_argv(argc, argv);
222 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
224 log_set_target(LOG_TARGET_AUTO);
225 log_parse_environment();
230 r = parse_proc_cmdline(parse_proc_cmdline_item);
232 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
234 ctx = kmod_new(NULL, NULL);
236 log_error("Failed to allocate memory for kmod.");
240 kmod_load_resources(ctx);
241 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
248 for (i = optind; i < argc; i++) {
249 k = apply_file(ctx, argv[i], false);
255 _cleanup_free_ char **files = NULL;
258 STRV_FOREACH(i, arg_proc_cmdline_modules) {
259 k = load_module(ctx, *i);
264 k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
266 log_error_errno(k, "Failed to enumerate modules-load.d files: %m");
272 STRV_FOREACH(fn, files) {
273 k = apply_file(ctx, *fn, true);
281 strv_free(arg_proc_cmdline_modules);
283 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;