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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
b2423f1f | 2 | |
b2423f1f | 3 | #include <errno.h> |
3f6fd1ba | 4 | #include <getopt.h> |
07630cea | 5 | #include <libkmod.h> |
3f6fd1ba | 6 | #include <limits.h> |
b2423f1f LP |
7 | #include <string.h> |
8 | #include <sys/stat.h> | |
b2423f1f | 9 | |
3f6fd1ba | 10 | #include "conf-files.h" |
a0f29c76 | 11 | #include "def.h" |
3ffd4af2 | 12 | #include "fd-util.h" |
0d39fa9c | 13 | #include "fileio.h" |
b2423f1f | 14 | #include "log.h" |
232ac0d6 | 15 | #include "module-util.h" |
4e731273 | 16 | #include "proc-cmdline.h" |
07630cea | 17 | #include "string-util.h" |
b2423f1f | 18 | #include "strv.h" |
3f6fd1ba | 19 | #include "util.h" |
03658d4f LP |
20 | |
21 | static char **arg_proc_cmdline_modules = NULL; | |
b2423f1f | 22 | |
75eb6154 | 23 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("modules-load.d"); |
fabe5c0e | 24 | |
83684a35 | 25 | static void systemd_kmod_log(void *data, int priority, const char *file, int line, |
f168c273 | 26 | const char *fn, const char *format, va_list args) { |
bcfce235 LP |
27 | |
28 | DISABLE_WARNING_FORMAT_NONLITERAL; | |
79008bdd | 29 | log_internalv(priority, 0, file, line, fn, format, args); |
bcfce235 | 30 | REENABLE_WARNING; |
83684a35 TG |
31 | } |
32 | ||
03658d4f | 33 | static int add_modules(const char *p) { |
fabe5c0e | 34 | _cleanup_strv_free_ char **k = NULL; |
03658d4f LP |
35 | |
36 | k = strv_split(p, ","); | |
0d0f0c50 SL |
37 | if (!k) |
38 | return log_oom(); | |
03658d4f | 39 | |
e287086b | 40 | if (strv_extend_strv(&arg_proc_cmdline_modules, k, true) < 0) |
0d0f0c50 | 41 | return log_oom(); |
03658d4f | 42 | |
03658d4f LP |
43 | return 0; |
44 | } | |
45 | ||
96287a49 | 46 | static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { |
74df0fca | 47 | int r; |
03658d4f | 48 | |
1d84ad94 LP |
49 | if (proc_cmdline_key_streq(key, "modules_load")) { |
50 | ||
51 | if (proc_cmdline_value_missing(key, value)) | |
52 | return 0; | |
53 | ||
059cb385 | 54 | r = add_modules(value); |
141a79f4 ZJS |
55 | if (r < 0) |
56 | return r; | |
03658d4f LP |
57 | } |
58 | ||
c007bb1b | 59 | return 0; |
03658d4f LP |
60 | } |
61 | ||
62 | static int load_module(struct kmod_ctx *ctx, const char *m) { | |
27fda47f | 63 | const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST; |
232ac0d6 ZJS |
64 | struct kmod_list *itr; |
65 | _cleanup_(kmod_module_unref_listp) struct kmod_list *modlist = NULL; | |
03658d4f LP |
66 | int r = 0; |
67 | ||
9f6445e3 | 68 | log_debug("load: %s", m); |
03658d4f LP |
69 | |
70 | r = kmod_module_new_from_lookup(ctx, m, &modlist); | |
f647962d MS |
71 | if (r < 0) |
72 | return log_error_errno(r, "Failed to lookup alias '%s': %m", m); | |
03658d4f | 73 | |
27fda47f MS |
74 | if (!modlist) { |
75 | log_error("Failed to find module '%s'", m); | |
8f9c0b4c | 76 | return -ENOENT; |
27fda47f MS |
77 | } |
78 | ||
03658d4f | 79 | kmod_list_foreach(itr, modlist) { |
232ac0d6 | 80 | _cleanup_(kmod_module_unrefp) struct kmod_module *mod = NULL; |
27fda47f | 81 | int state, err; |
03658d4f LP |
82 | |
83 | mod = kmod_module_get_module(itr); | |
27fda47f MS |
84 | state = kmod_module_get_initstate(mod); |
85 | ||
86 | switch (state) { | |
87 | case KMOD_MODULE_BUILTIN: | |
88 | log_info("Module '%s' is builtin", kmod_module_get_name(mod)); | |
89 | break; | |
90 | ||
91 | case KMOD_MODULE_LIVE: | |
b56c267f | 92 | log_debug("Module '%s' is already loaded", kmod_module_get_name(mod)); |
27fda47f MS |
93 | break; |
94 | ||
95 | default: | |
96 | err = kmod_module_probe_insert_module(mod, probe_flags, | |
97 | NULL, NULL, NULL, NULL); | |
98 | ||
99 | if (err == 0) | |
100 | log_info("Inserted module '%s'", kmod_module_get_name(mod)); | |
101 | else if (err == KMOD_PROBE_APPLY_BLACKLIST) | |
102 | log_info("Module '%s' is blacklisted", kmod_module_get_name(mod)); | |
103 | else { | |
2c3f0bb2 | 104 | assert(err < 0); |
6cbb0af1 ZJS |
105 | |
106 | log_full_errno(err == ENODEV ? LOG_NOTICE : | |
107 | err == ENOENT ? LOG_WARNING : | |
108 | LOG_ERR, | |
109 | err, | |
110 | "Failed to insert '%s': %m", | |
111 | kmod_module_get_name(mod)); | |
112 | if (!IN_SET(err, ENODEV, ENOENT)) | |
113 | r = err; | |
27fda47f | 114 | } |
03658d4f | 115 | } |
03658d4f LP |
116 | } |
117 | ||
03658d4f LP |
118 | return r; |
119 | } | |
120 | ||
fabe5c0e LP |
121 | static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent) { |
122 | _cleanup_fclose_ FILE *f = NULL; | |
123 | int r; | |
124 | ||
125 | assert(ctx); | |
126 | assert(path); | |
127 | ||
4cf7ea55 | 128 | r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f); |
fabe5c0e LP |
129 | if (r < 0) { |
130 | if (ignore_enoent && r == -ENOENT) | |
131 | return 0; | |
132 | ||
8d3d7072 | 133 | return log_error_errno(r, "Failed to open %s, ignoring: %m", path); |
fabe5c0e LP |
134 | } |
135 | ||
9f6445e3 | 136 | log_debug("apply: %s", path); |
fabe5c0e LP |
137 | for (;;) { |
138 | char line[LINE_MAX], *l; | |
139 | int k; | |
140 | ||
141 | if (!fgets(line, sizeof(line), f)) { | |
142 | if (feof(f)) | |
143 | break; | |
144 | ||
e1427b13 | 145 | return log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path); |
fabe5c0e LP |
146 | } |
147 | ||
148 | l = strstrip(line); | |
149 | if (!*l) | |
150 | continue; | |
d3b6d0c2 | 151 | if (strchr(COMMENTS "\n", *l)) |
fabe5c0e LP |
152 | continue; |
153 | ||
154 | k = load_module(ctx, l); | |
155 | if (k < 0 && r == 0) | |
156 | r = k; | |
157 | } | |
158 | ||
159 | return r; | |
160 | } | |
161 | ||
601185b4 | 162 | static void help(void) { |
fabe5c0e LP |
163 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
164 | "Loads statically configured kernel modules.\n\n" | |
eb9da376 LP |
165 | " -h --help Show this help\n" |
166 | " --version Show package version\n", | |
fabe5c0e | 167 | program_invocation_short_name); |
fabe5c0e LP |
168 | } |
169 | ||
170 | static int parse_argv(int argc, char *argv[]) { | |
171 | ||
eb9da376 LP |
172 | enum { |
173 | ARG_VERSION = 0x100, | |
174 | }; | |
175 | ||
fabe5c0e LP |
176 | static const struct option options[] = { |
177 | { "help", no_argument, NULL, 'h' }, | |
eb9da376 LP |
178 | { "version", no_argument, NULL, ARG_VERSION }, |
179 | {} | |
fabe5c0e LP |
180 | }; |
181 | ||
182 | int c; | |
183 | ||
184 | assert(argc >= 0); | |
185 | assert(argv); | |
186 | ||
601185b4 | 187 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
fabe5c0e LP |
188 | |
189 | switch (c) { | |
190 | ||
191 | case 'h': | |
601185b4 ZJS |
192 | help(); |
193 | return 0; | |
eb9da376 LP |
194 | |
195 | case ARG_VERSION: | |
3f6fd1ba | 196 | return version(); |
fabe5c0e LP |
197 | |
198 | case '?': | |
199 | return -EINVAL; | |
200 | ||
201 | default: | |
eb9da376 | 202 | assert_not_reached("Unhandled option"); |
fabe5c0e | 203 | } |
fabe5c0e LP |
204 | |
205 | return 1; | |
206 | } | |
207 | ||
b2423f1f | 208 | int main(int argc, char *argv[]) { |
fabe5c0e | 209 | int r, k; |
232ac0d6 | 210 | _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL; |
b2423f1f | 211 | |
fabe5c0e LP |
212 | r = parse_argv(argc, argv); |
213 | if (r <= 0) | |
214 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
b2423f1f | 215 | |
4cfa2c99 | 216 | log_set_target(LOG_TARGET_AUTO); |
b2423f1f LP |
217 | log_parse_environment(); |
218 | log_open(); | |
219 | ||
4c12626c LP |
220 | umask(0022); |
221 | ||
1d84ad94 | 222 | r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); |
b5884878 | 223 | if (r < 0) |
da927ba9 | 224 | log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); |
03658d4f | 225 | |
4e2075ce LP |
226 | ctx = kmod_new(NULL, NULL); |
227 | if (!ctx) { | |
83684a35 | 228 | log_error("Failed to allocate memory for kmod."); |
b2423f1f LP |
229 | goto finish; |
230 | } | |
231 | ||
83684a35 | 232 | kmod_load_resources(ctx); |
83684a35 | 233 | kmod_set_log_fn(ctx, systemd_kmod_log, NULL); |
b2423f1f | 234 | |
fabe5c0e | 235 | r = 0; |
03658d4f | 236 | |
fabe5c0e LP |
237 | if (argc > optind) { |
238 | int i; | |
b2423f1f | 239 | |
fabe5c0e LP |
240 | for (i = optind; i < argc; i++) { |
241 | k = apply_file(ctx, argv[i], false); | |
242 | if (k < 0 && r == 0) | |
243 | r = k; | |
b2423f1f LP |
244 | } |
245 | ||
fabe5c0e | 246 | } else { |
4df32778 | 247 | _cleanup_strv_free_ char **files = NULL; |
fabe5c0e | 248 | char **fn, **i; |
b2423f1f | 249 | |
fabe5c0e LP |
250 | STRV_FOREACH(i, arg_proc_cmdline_modules) { |
251 | k = load_module(ctx, *i); | |
b857193b LP |
252 | if (k < 0 && r == 0) |
253 | r = k; | |
b2423f1f LP |
254 | } |
255 | ||
b5084605 | 256 | k = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs); |
4b462d1a | 257 | if (k < 0) { |
da927ba9 | 258 | log_error_errno(k, "Failed to enumerate modules-load.d files: %m"); |
4b462d1a LP |
259 | if (r == 0) |
260 | r = k; | |
fabe5c0e | 261 | goto finish; |
b2423f1f LP |
262 | } |
263 | ||
fabe5c0e LP |
264 | STRV_FOREACH(fn, files) { |
265 | k = apply_file(ctx, *fn, true); | |
266 | if (k < 0 && r == 0) | |
267 | r = k; | |
268 | } | |
b2423f1f LP |
269 | } |
270 | ||
b2423f1f | 271 | finish: |
03658d4f | 272 | strv_free(arg_proc_cmdline_modules); |
b2423f1f | 273 | |
fabe5c0e | 274 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
b2423f1f | 275 | } |