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Commit | Line | Data |
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b2423f1f LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
b2423f1f LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
b2423f1f | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
b2423f1f LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
b2423f1f | 20 | #include <errno.h> |
3f6fd1ba | 21 | #include <getopt.h> |
07630cea | 22 | #include <libkmod.h> |
3f6fd1ba | 23 | #include <limits.h> |
b2423f1f LP |
24 | #include <string.h> |
25 | #include <sys/stat.h> | |
b2423f1f | 26 | |
3f6fd1ba | 27 | #include "conf-files.h" |
a0f29c76 | 28 | #include "def.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
0d39fa9c | 30 | #include "fileio.h" |
b2423f1f | 31 | #include "log.h" |
232ac0d6 | 32 | #include "module-util.h" |
4e731273 | 33 | #include "proc-cmdline.h" |
07630cea | 34 | #include "string-util.h" |
b2423f1f | 35 | #include "strv.h" |
3f6fd1ba | 36 | #include "util.h" |
03658d4f LP |
37 | |
38 | static char **arg_proc_cmdline_modules = NULL; | |
b2423f1f | 39 | |
75eb6154 | 40 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d"); |
fabe5c0e | 41 | |
83684a35 | 42 | static void systemd_kmod_log(void *data, int priority, const char *file, int line, |
f168c273 | 43 | const char *fn, const char *format, va_list args) { |
bcfce235 LP |
44 | |
45 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
79008bdd | 46 | log_internalv(priority, 0, file, line, fn, format, args); |
bcfce235 | 47 | REENABLE_WARNING; |
83684a35 TG |
48 | } |
49 | ||
03658d4f | 50 | static int add_modules(const char *p) { |
fabe5c0e | 51 | _cleanup_strv_free_ char **k = NULL; |
03658d4f LP |
52 | |
53 | k = strv_split(p, ","); | |
0d0f0c50 SL |
54 | if (!k) |
55 | return log_oom(); | |
03658d4f | 56 | |
e287086b | 57 | if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0) |
0d0f0c50 | 58 | return log_oom(); |
03658d4f | 59 | |
03658d4f LP |
60 | return 0; |
61 | } | |
62 | ||
96287a49 | 63 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 64 | int r; |
03658d4f | 65 | |
1d84ad94 LP |
66 | if (proc_cmdline_key_streq(key, "modules_load")) { |
67 | ||
68 | if (proc_cmdline_value_missing(key, value)) | |
69 | return 0; | |
70 | ||
059cb385 | 71 | r = add_modules(value); |
141a79f4 ZJS |
72 | if (r < 0) |
73 | return r; | |
03658d4f LP |
74 | } |
75 | ||
c007bb1b | 76 | return 0; |
03658d4f LP |
77 | } |
78 | ||
79 | static int load_module(struct kmod_ctx *ctx, const char *m) { | |
27fda47f | 80 | const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST; |
232ac0d6 ZJS |
81 | struct kmod_list *itr; |
82 | _cleanup_(kmod_module_unref_listp) struct kmod_list *modlist = NULL; | |
03658d4f LP |
83 | int r = 0; |
84 | ||
9f6445e3 | 85 | log_debug("load: %s", m); |
03658d4f LP |
86 | |
87 | r = kmod_module_new_from_lookup(ctx, m, &modlist); | |
f647962d MS |
88 | if (r < 0) |
89 | return log_error_errno(r, "Failed to lookup alias '%s': %m", m); | |
03658d4f | 90 | |
27fda47f MS |
91 | if (!modlist) { |
92 | log_error("Failed to find module '%s'", m); | |
8f9c0b4c | 93 | return -ENOENT; |
27fda47f MS |
94 | } |
95 | ||
03658d4f | 96 | kmod_list_foreach(itr, modlist) { |
232ac0d6 | 97 | _cleanup_(kmod_module_unrefp) struct kmod_module *mod = NULL; |
27fda47f | 98 | int state, err; |
03658d4f LP |
99 | |
100 | mod = kmod_module_get_module(itr); | |
27fda47f MS |
101 | state = kmod_module_get_initstate(mod); |
102 | ||
103 | switch (state) { | |
104 | case KMOD_MODULE_BUILTIN: | |
105 | log_info("Module '%s' is builtin", kmod_module_get_name(mod)); | |
106 | break; | |
107 | ||
108 | case KMOD_MODULE_LIVE: | |
b56c267f | 109 | log_debug("Module '%s' is already loaded", kmod_module_get_name(mod)); |
27fda47f MS |
110 | break; |
111 | ||
112 | default: | |
113 | err = kmod_module_probe_insert_module(mod, probe_flags, | |
114 | NULL, NULL, NULL, NULL); | |
115 | ||
116 | if (err == 0) | |
117 | log_info("Inserted module '%s'", kmod_module_get_name(mod)); | |
118 | else if (err == KMOD_PROBE_APPLY_BLACKLIST) | |
119 | log_info("Module '%s' is blacklisted", kmod_module_get_name(mod)); | |
120 | else { | |
2c3f0bb2 | 121 | assert(err < 0); |
6cbb0af1 ZJS |
122 | |
123 | log_full_errno(err == ENODEV ? LOG_NOTICE : | |
124 | err == ENOENT ? LOG_WARNING : | |
125 | LOG_ERR, | |
126 | err, | |
127 | "Failed to insert '%s': %m", | |
128 | kmod_module_get_name(mod)); | |
129 | if (!IN_SET(err, ENODEV, ENOENT)) | |
130 | r = err; | |
27fda47f | 131 | } |
03658d4f | 132 | } |
03658d4f LP |
133 | } |
134 | ||
03658d4f LP |
135 | return r; |
136 | } | |
137 | ||
fabe5c0e LP |
138 | static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) { |
139 | _cleanup_fclose_ FILE *f = NULL; | |
140 | int r; | |
141 | ||
142 | assert(ctx); | |
143 | assert(path); | |
144 | ||
4cf7ea55 | 145 | r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f); |
fabe5c0e LP |
146 | if (r < 0) { |
147 | if (ignore_enoent && r == -ENOENT) | |
148 | return 0; | |
149 | ||
8d3d7072 | 150 | return log_error_errno(r, "Failed to open %s, ignoring: %m", path); |
fabe5c0e LP |
151 | } |
152 | ||
9f6445e3 | 153 | log_debug("apply: %s", path); |
fabe5c0e LP |
154 | for (;;) { |
155 | char line[LINE_MAX], *l; | |
156 | int k; | |
157 | ||
158 | if (!fgets(line, sizeof(line), f)) { | |
159 | if (feof(f)) | |
160 | break; | |
161 | ||
e1427b13 | 162 | return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path); |
fabe5c0e LP |
163 | } |
164 | ||
165 | l = strstrip(line); | |
166 | if (!*l) | |
167 | continue; | |
d3b6d0c2 | 168 | if (strchr(COMMENTS "\n", *l)) |
fabe5c0e LP |
169 | continue; |
170 | ||
171 | k = load_module(ctx, l); | |
172 | if (k < 0 && r == 0) | |
173 | r = k; | |
174 | } | |
175 | ||
176 | return r; | |
177 | } | |
178 | ||
601185b4 | 179 | static void help(void) { |
fabe5c0e LP |
180 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
181 | "Loads statically configured kernel modules.\n\n" | |
eb9da376 LP |
182 | " -h --help Show this help\n" |
183 | " --version Show package version\n", | |
fabe5c0e | 184 | program_invocation_short_name); |
fabe5c0e LP |
185 | } |
186 | ||
187 | static int parse_argv(int argc, char *argv[]) { | |
188 | ||
eb9da376 LP |
189 | enum { |
190 | ARG_VERSION = 0x100, | |
191 | }; | |
192 | ||
fabe5c0e LP |
193 | static const struct option options[] = { |
194 | { "help", no_argument, NULL, 'h' }, | |
eb9da376 LP |
195 | { "version", no_argument, NULL, ARG_VERSION }, |
196 | {} | |
fabe5c0e LP |
197 | }; |
198 | ||
199 | int c; | |
200 | ||
201 | assert(argc >= 0); | |
202 | assert(argv); | |
203 | ||
601185b4 | 204 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
fabe5c0e LP |
205 | |
206 | switch (c) { | |
207 | ||
208 | case 'h': | |
601185b4 ZJS |
209 | help(); |
210 | return 0; | |
eb9da376 LP |
211 | |
212 | case ARG_VERSION: | |
3f6fd1ba | 213 | return version(); |
fabe5c0e LP |
214 | |
215 | case '?': | |
216 | return -EINVAL; | |
217 | ||
218 | default: | |
eb9da376 | 219 | assert_not_reached("Unhandled option"); |
fabe5c0e | 220 | } |
fabe5c0e LP |
221 | |
222 | return 1; | |
223 | } | |
224 | ||
b2423f1f | 225 | int main(int argc, char *argv[]) { |
fabe5c0e | 226 | int r, k; |
232ac0d6 | 227 | _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL; |
b2423f1f | 228 | |
fabe5c0e LP |
229 | r = parse_argv(argc, argv); |
230 | if (r <= 0) | |
231 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
b2423f1f | 232 | |
4cfa2c99 | 233 | log_set_target(LOG_TARGET_AUTO); |
b2423f1f LP |
234 | log_parse_environment(); |
235 | log_open(); | |
236 | ||
4c12626c LP |
237 | umask(0022); |
238 | ||
1d84ad94 | 239 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
b5884878 | 240 | if (r < 0) |
da927ba9 | 241 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
03658d4f | 242 | |
4e2075ce LP |
243 | ctx = kmod_new(NULL, NULL); |
244 | if (!ctx) { | |
83684a35 | 245 | log_error("Failed to allocate memory for kmod."); |
b2423f1f LP |
246 | goto finish; |
247 | } | |
248 | ||
83684a35 | 249 | kmod_load_resources(ctx); |
83684a35 | 250 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); |
b2423f1f | 251 | |
fabe5c0e | 252 | r = 0; |
03658d4f | 253 | |
fabe5c0e LP |
254 | if (argc > optind) { |
255 | int i; | |
b2423f1f | 256 | |
fabe5c0e LP |
257 | for (i = optind; i < argc; i++) { |
258 | k = apply_file(ctx, argv[i], false); | |
259 | if (k < 0 && r == 0) | |
260 | r = k; | |
b2423f1f LP |
261 | } |
262 | ||
fabe5c0e | 263 | } else { |
4df32778 | 264 | _cleanup_strv_free_ char **files = NULL; |
fabe5c0e | 265 | char **fn, **i; |
b2423f1f | 266 | |
fabe5c0e LP |
267 | STRV_FOREACH(i, arg_proc_cmdline_modules) { |
268 | k = load_module(ctx, *i); | |
b857193b LP |
269 | if (k < 0 && r == 0) |
270 | r = k; | |
b2423f1f LP |
271 | } |
272 | ||
b5084605 | 273 | k = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs); |
4b462d1a | 274 | if (k < 0) { |
da927ba9 | 275 | log_error_errno(k, "Failed to enumerate modules-load.d files: %m"); |
4b462d1a LP |
276 | if (r == 0) |
277 | r = k; | |
fabe5c0e | 278 | goto finish; |
b2423f1f LP |
279 | } |
280 | ||
fabe5c0e LP |
281 | STRV_FOREACH(fn, files) { |
282 | k = apply_file(ctx, *fn, true); | |
283 | if (k < 0 && r == 0) | |
284 | r = k; | |
285 | } | |
b2423f1f LP |
286 | } |
287 | ||
b2423f1f | 288 | finish: |
03658d4f | 289 | strv_free(arg_proc_cmdline_modules); |
b2423f1f | 290 | |
fabe5c0e | 291 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
b2423f1f | 292 | } |