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_metav(priority
, 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("Failed to lookup alias '%s': %s", m
, strerror(-r
));
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("Failed to insert '%s': %s", kmod_module_get_name(mod
),
125 kmod_module_unref(mod
);
128 kmod_module_unref_list(modlist
);
133 static int apply_file(struct kmod_ctx
*ctx
, const char *path
, bool ignore_enoent
) {
134 _cleanup_fclose_
FILE *f
= NULL
;
140 r
= search_and_fopen_nulstr(path
, "re", NULL
, conf_file_dirs
, &f
);
142 if (ignore_enoent
&& r
== -ENOENT
)
145 log_error("Failed to open %s, ignoring: %s", path
, strerror(-r
));
149 log_debug("apply: %s", path
);
151 char line
[LINE_MAX
], *l
;
154 if (!fgets(line
, sizeof(line
), f
)) {
158 log_error("Failed to read file '%s', ignoring: %m", path
);
165 if (strchr(COMMENTS
"\n", *l
))
168 k
= load_module(ctx
, l
);
176 static void help(void) {
177 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
178 "Loads statically configured kernel modules.\n\n"
179 " -h --help Show this help\n"
180 " --version Show package version\n",
181 program_invocation_short_name
);
184 static int parse_argv(int argc
, char *argv
[]) {
190 static const struct option options
[] = {
191 { "help", no_argument
, NULL
, 'h' },
192 { "version", no_argument
, NULL
, ARG_VERSION
},
201 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
210 puts(PACKAGE_STRING
);
211 puts(SYSTEMD_FEATURES
);
218 assert_not_reached("Unhandled option");
224 int main(int argc
, char *argv
[]) {
226 struct kmod_ctx
*ctx
;
228 r
= parse_argv(argc
, argv
);
230 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;
232 log_set_target(LOG_TARGET_AUTO
);
233 log_parse_environment();
238 r
= parse_proc_cmdline(parse_proc_cmdline_item
);
240 log_warning("Failed to parse kernel command line, ignoring: %s", strerror(-r
));
242 ctx
= kmod_new(NULL
, NULL
);
244 log_error("Failed to allocate memory for kmod.");
248 kmod_load_resources(ctx
);
249 kmod_set_log_fn(ctx
, systemd_kmod_log
, NULL
);
256 for (i
= optind
; i
< argc
; i
++) {
257 k
= apply_file(ctx
, argv
[i
], false);
263 _cleanup_free_
char **files
= NULL
;
266 STRV_FOREACH(i
, arg_proc_cmdline_modules
) {
267 k
= load_module(ctx
, *i
);
272 k
= conf_files_list_nulstr(&files
, ".conf", NULL
, conf_file_dirs
);
274 log_error("Failed to enumerate modules-load.d files: %s", strerror(-k
));
280 STRV_FOREACH(fn
, files
) {
281 k
= apply_file(ctx
, *fn
, true);
289 strv_free(arg_proc_cmdline_modules
);
291 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;