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/>.
34 #include "conf-files.h"
37 static char **arg_proc_cmdline_modules = NULL;
39 #pragma GCC diagnostic push
40 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
41 static void systemd_kmod_log(void *data, int priority, const char *file, int line,
42 const char *fn, const char *format, va_list args)
44 log_metav(priority, file, line, fn, format, args);
46 #pragma GCC diagnostic pop
48 static int add_modules(const char *p) {
51 k = strv_split(p, ",");
55 t = strv_merge(arg_proc_cmdline_modules, k);
60 strv_free(arg_proc_cmdline_modules);
61 arg_proc_cmdline_modules = t;
66 static int parse_proc_cmdline(void) {
67 char _cleanup_free_ *line = NULL;
72 if (detect_container(NULL) > 0)
75 r = read_one_line_file("/proc/cmdline", &line);
77 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
81 FOREACH_WORD_QUOTED(w, l, line, state) {
82 char _cleanup_free_ *word;
88 if (startswith(word, "modules-load=")) {
90 r = add_modules(word + 13);
94 } else if (startswith(word, "rd.modules-load=")) {
97 r = add_modules(word + 16);
108 static int load_module(struct kmod_ctx *ctx, const char *m) {
109 const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
110 struct kmod_list *itr, *modlist = NULL;
113 log_debug("load: %s\n", m);
115 r = kmod_module_new_from_lookup(ctx, m, &modlist);
117 log_error("Failed to lookup alias '%s': %s", m, strerror(-r));
122 log_error("Failed to find module '%s'", m);
126 kmod_list_foreach(itr, modlist) {
127 struct kmod_module *mod;
130 mod = kmod_module_get_module(itr);
131 state = kmod_module_get_initstate(mod);
134 case KMOD_MODULE_BUILTIN:
135 log_info("Module '%s' is builtin", kmod_module_get_name(mod));
138 case KMOD_MODULE_LIVE:
139 log_info("Module '%s' is already loaded", kmod_module_get_name(mod));
143 err = kmod_module_probe_insert_module(mod, probe_flags,
144 NULL, NULL, NULL, NULL);
147 log_info("Inserted module '%s'", kmod_module_get_name(mod));
148 else if (err == KMOD_PROBE_APPLY_BLACKLIST)
149 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
151 log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
157 kmod_module_unref(mod);
160 kmod_module_unref_list(modlist);
165 int main(int argc, char *argv[]) {
166 int r = EXIT_FAILURE, k;
167 char **files = NULL, **fn, **i;
168 struct kmod_ctx *ctx;
171 log_error("This program takes no argument.");
175 log_set_target(LOG_TARGET_AUTO);
176 log_parse_environment();
181 if (parse_proc_cmdline() < 0)
184 ctx = kmod_new(NULL, NULL);
186 log_error("Failed to allocate memory for kmod.");
190 kmod_load_resources(ctx);
191 kmod_set_log_fn(ctx, systemd_kmod_log, NULL);
195 STRV_FOREACH(i, arg_proc_cmdline_modules) {
196 k = load_module(ctx, *i);
201 k = conf_files_list(&files, ".conf",
202 "/etc/modules-load.d",
203 "/run/modules-load.d",
204 "/usr/local/lib/modules-load.d",
205 "/usr/lib/modules-load.d",
206 #ifdef HAVE_SPLIT_USR
207 "/lib/modules-load.d",
211 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k));
216 STRV_FOREACH(fn, files) {
219 f = fopen(*fn, "re");
224 log_error("Failed to open %s: %m", *fn);
229 log_debug("apply: %s\n", *fn);
231 char line[LINE_MAX], *l;
233 if (!fgets(line, sizeof(line), f))
237 if (*l == '#' || *l == 0)
240 k = load_module(ctx, l);
246 log_error("Failed to read from file: %m");
256 strv_free(arg_proc_cmdline_modules);