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 return log_error_errno(r, "Failed to lookup alias '%s': %m", m);
88 log_error("Failed to find module '%s'", m);
92 kmod_list_foreach(itr, modlist) {
93 struct kmod_module *mod;
96 mod = kmod_module_get_module(itr);
97 state = kmod_module_get_initstate(mod);
100 case KMOD_MODULE_BUILTIN:
101 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
104 case KMOD_MODULE_LIVE:
105 log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
109 err = kmod_module_probe_insert_module(mod, probe_flags,
110 NULL, NULL, NULL, NULL);
113 log_info("Inserted module '%s'", kmod_module_get_name(mod));
114 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
115 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
117 log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod));
122 kmod_module_unref(mod);
125 kmod_module_unref_list(modlist);
130 static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) {
131 _cleanup_fclose_ FILE *f = NULL;
137 r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
139 if (ignore_enoent && r == -ENOENT)
142 return log_error_errno(r, "Failed to open %s, ignoring: %m", path);
145 log_debug("apply: %s", path);
147 char line[LINE_MAX], *l;
150 if (!fgets(line, sizeof(line), f)) {
154 log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
161 if (strchr(COMMENTS "\n", *l))
164 k = load_module(ctx, l);
172 static void help(void) {
173 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
174 "Loads statically configured kernel modules.\n\n"
175 " -h --help Show this help\n"
176 " --version Show package version\n",
177 program_invocation_short_name);
180 static int parse_argv(int argc, char *argv[]) {
186 static const struct option options[] = {
187 { "help", no_argument, NULL, 'h' },
188 { "version", no_argument, NULL, ARG_VERSION },
197 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
206 puts(PACKAGE_STRING);
207 puts(SYSTEMD_FEATURES);
214 assert_not_reached("Unhandled option");
220 int main(int argc, char *argv[]) {
222 struct kmod_ctx *ctx;
224 r = parse_argv(argc, argv);
226 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
228 log_set_target(LOG_TARGET_AUTO);
229 log_parse_environment();
234 r = parse_proc_cmdline(parse_proc_cmdline_item);
236 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
238 ctx = kmod_new(NULL, NULL);
240 log_error("Failed to allocate memory for kmod.");
244 kmod_load_resources(ctx);
245 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
252 for (i = optind; i < argc; i++) {
253 k = apply_file(ctx, argv[i], false);
259 _cleanup_free_ char **files = NULL;
262 STRV_FOREACH(i, arg_proc_cmdline_modules) {
263 k = load_module(ctx, *i);
268 k = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
270 log_error_errno(k, "Failed to enumerate modules-load.d files: %m");
276 STRV_FOREACH(fn, files) {
277 k = apply_file(ctx, *fn, true);
285 strv_free(arg_proc_cmdline_modules);
287 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;