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Commit | Line | Data |
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c3d0a5f2 | 1 | /* |
8b013767 | 2 | * kmod-modprobe - manage linux kernel modules using libkmod. |
c3d0a5f2 | 3 | * |
e6b0e49b | 4 | * Copyright (C) 2011-2013 ProFUSION embedded systems |
c3d0a5f2 | 5 | * |
cb451f35 LDM |
6 | * This program is free software: you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 2 of the License, or | |
9 | * (at your option) any later version. | |
c3d0a5f2 GSB |
10 | * |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
cb451f35 LDM |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. | |
c3d0a5f2 | 15 | * |
cb451f35 LDM |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
c3d0a5f2 | 18 | */ |
cb451f35 | 19 | |
4744ebce | 20 | #include <assert.h> |
c2e4286b LDM |
21 | #include <errno.h> |
22 | #include <getopt.h> | |
23 | #include <limits.h> | |
24 | #include <stdbool.h> | |
c3d0a5f2 GSB |
25 | #include <stdio.h> |
26 | #include <stdlib.h> | |
c3d0a5f2 | 27 | #include <string.h> |
c2e4286b | 28 | #include <unistd.h> |
c3d0a5f2 | 29 | #include <sys/stat.h> |
c2e4286b | 30 | #include <sys/types.h> |
c3d0a5f2 | 31 | #include <sys/utsname.h> |
eff917c0 | 32 | #include <sys/wait.h> |
74d1df66 LDM |
33 | |
34 | #include <shared/array.h> | |
576dd439 | 35 | #include <shared/macro.h> |
c3d0a5f2 | 36 | |
f357866d | 37 | #include <libkmod/libkmod.h> |
c2e4286b | 38 | |
4a2e20df LDM |
39 | #include "kmod.h" |
40 | ||
c3d0a5f2 GSB |
41 | static int log_priority = LOG_CRIT; |
42 | static int use_syslog = 0; | |
fcb0ce94 | 43 | #define LOG(...) log_printf(log_priority, __VA_ARGS__) |
c3d0a5f2 GSB |
44 | |
45 | #define DEFAULT_VERBOSE LOG_WARNING | |
46 | static int verbose = DEFAULT_VERBOSE; | |
525fa07b | 47 | static int do_show = 0; |
c3d0a5f2 GSB |
48 | static int dry_run = 0; |
49 | static int ignore_loaded = 0; | |
8122985d | 50 | static int lookup_only = 0; |
c3d0a5f2 GSB |
51 | static int first_time = 0; |
52 | static int ignore_commands = 0; | |
53 | static int use_blacklist = 0; | |
54 | static int force = 0; | |
55 | static int strip_modversion = 0; | |
56 | static int strip_vermagic = 0; | |
42b32d30 | 57 | static int remove_holders = 0; |
d8a6c0cc | 58 | static int quiet_inuse = 0; |
c3d0a5f2 | 59 | |
cc98830c | 60 | static const char cmdopts_s[] = "arRibfDcnC:d:S:sqvVh"; |
c3d0a5f2 GSB |
61 | static const struct option cmdopts[] = { |
62 | {"all", no_argument, 0, 'a'}, | |
63 | {"remove", no_argument, 0, 'r'}, | |
64 | {"remove-dependencies", no_argument, 0, 5}, | |
42b32d30 | 65 | {"remove-holders", no_argument, 0, 5}, |
c3d0a5f2 GSB |
66 | {"resolve-alias", no_argument, 0, 'R'}, |
67 | {"first-time", no_argument, 0, 3}, | |
68 | {"ignore-install", no_argument, 0, 'i'}, | |
69 | {"ignore-remove", no_argument, 0, 'i'}, | |
70 | {"use-blacklist", no_argument, 0, 'b'}, | |
71 | {"force", no_argument, 0, 'f'}, | |
72 | {"force-modversion", no_argument, 0, 2}, | |
73 | {"force-vermagic", no_argument, 0, 1}, | |
74 | ||
c3d0a5f2 GSB |
75 | {"show-depends", no_argument, 0, 'D'}, |
76 | {"showconfig", no_argument, 0, 'c'}, | |
77 | {"show-config", no_argument, 0, 'c'}, | |
78 | {"show-modversions", no_argument, 0, 4}, | |
79 | {"dump-modversions", no_argument, 0, 4}, | |
3ada8df8 | 80 | {"show-exports", no_argument, 0, 6}, |
c3d0a5f2 GSB |
81 | |
82 | {"dry-run", no_argument, 0, 'n'}, | |
83 | {"show", no_argument, 0, 'n'}, | |
84 | ||
85 | {"config", required_argument, 0, 'C'}, | |
86 | {"dirname", required_argument, 0, 'd'}, | |
87 | {"set-version", required_argument, 0, 'S'}, | |
88 | ||
89 | {"syslog", no_argument, 0, 's'}, | |
90 | {"quiet", no_argument, 0, 'q'}, | |
91 | {"verbose", no_argument, 0, 'v'}, | |
92 | {"version", no_argument, 0, 'V'}, | |
93 | {"help", no_argument, 0, 'h'}, | |
94 | {NULL, 0, 0, 0} | |
95 | }; | |
96 | ||
4a2e20df | 97 | static void help(void) |
c3d0a5f2 | 98 | { |
34e06bfb | 99 | printf("Usage:\n" |
c3d0a5f2 GSB |
100 | "\t%s [options] [-i] [-b] modulename\n" |
101 | "\t%s [options] -a [-i] [-b] modulename [modulename...]\n" | |
102 | "\t%s [options] -r [-i] modulename\n" | |
103 | "\t%s [options] -r -a [-i] modulename [modulename...]\n" | |
c3d0a5f2 GSB |
104 | "\t%s [options] -c\n" |
105 | "\t%s [options] --dump-modversions filename\n" | |
106 | "Management Options:\n" | |
ab70dce1 GSB |
107 | "\t-a, --all Consider every non-argument to\n" |
108 | "\t be a module name to be inserted\n" | |
109 | "\t or removed (-r)\n" | |
110 | "\t-r, --remove Remove modules instead of inserting\n" | |
42b32d30 LDM |
111 | "\t --remove-dependencies Deprecated: use --remove-holders\n" |
112 | "\t --remove-holders Also remove module holders (use together with -r)\n" | |
ab70dce1 GSB |
113 | "\t-R, --resolve-alias Only lookup and print alias and exit\n" |
114 | "\t --first-time Fail if module already inserted or removed\n" | |
115 | "\t-i, --ignore-install Ignore install commands\n" | |
116 | "\t-i, --ignore-remove Ignore remove commands\n" | |
117 | "\t-b, --use-blacklist Apply blacklist to resolved alias.\n" | |
118 | "\t-f, --force Force module insertion or removal.\n" | |
119 | "\t implies --force-modversions and\n" | |
120 | "\t --force-vermagic\n" | |
121 | "\t --force-modversion Ignore module's version\n" | |
122 | "\t --force-vermagic Ignore module's version magic\n" | |
c3d0a5f2 GSB |
123 | "\n" |
124 | "Query Options:\n" | |
ab70dce1 GSB |
125 | "\t-D, --show-depends Only print module dependencies and exit\n" |
126 | "\t-c, --showconfig Print out known configuration and exit\n" | |
127 | "\t-c, --show-config Same as --showconfig\n" | |
128 | "\t --show-modversions Dump module symbol version and exit\n" | |
129 | "\t --dump-modversions Same as --show-modversions\n" | |
3ada8df8 | 130 | "\t --show-exports Only print module exported symbol versions and exit\n" |
c3d0a5f2 GSB |
131 | "\n" |
132 | "General Options:\n" | |
ab70dce1 GSB |
133 | "\t-n, --dry-run Do not execute operations, just print out\n" |
134 | "\t-n, --show Same as --dry-run\n" | |
c3d0a5f2 | 135 | |
2c96693e | 136 | "\t-C, --config=FILE Use FILE instead of default search paths\n" |
c5b37dba | 137 | "\t-d, --dirname=DIR Use DIR as filesystem root for /lib/modules\n" |
ab70dce1 | 138 | "\t-S, --set-version=VERSION Use VERSION instead of `uname -r`\n" |
c3d0a5f2 GSB |
139 | |
140 | "\t-s, --syslog print to syslog, not stderr\n" | |
141 | "\t-q, --quiet disable messages\n" | |
142 | "\t-v, --verbose enables more messages\n" | |
143 | "\t-V, --version show version\n" | |
144 | "\t-h, --help show this help\n", | |
7c04aeee LDM |
145 | program_invocation_short_name, program_invocation_short_name, |
146 | program_invocation_short_name, program_invocation_short_name, | |
147 | program_invocation_short_name, program_invocation_short_name); | |
c3d0a5f2 GSB |
148 | } |
149 | ||
1958af88 | 150 | _printf_format_(1, 2) |
c3d0a5f2 GSB |
151 | static inline void _show(const char *fmt, ...) |
152 | { | |
153 | va_list args; | |
154 | ||
525fa07b | 155 | if (!do_show && verbose <= DEFAULT_VERBOSE) |
c3d0a5f2 GSB |
156 | return; |
157 | ||
158 | va_start(args, fmt); | |
159 | vfprintf(stdout, fmt, args); | |
160 | fflush(stdout); | |
161 | va_end(args); | |
162 | } | |
c3d0a5f2 GSB |
163 | #define SHOW(...) _show(__VA_ARGS__) |
164 | ||
c3d0a5f2 GSB |
165 | static int show_config(struct kmod_ctx *ctx) |
166 | { | |
bc43496a LDM |
167 | struct config_iterators { |
168 | const char *name; | |
169 | struct kmod_config_iter *(*get_iter)(const struct kmod_ctx *ctx); | |
170 | } ci[] = { | |
171 | { "blacklist", kmod_config_get_blacklists }, | |
172 | { "install", kmod_config_get_install_commands }, | |
173 | { "remove", kmod_config_get_remove_commands }, | |
174 | { "alias", kmod_config_get_aliases }, | |
02629fa0 | 175 | { "options", kmod_config_get_options }, |
bc43496a LDM |
176 | { "softdep", kmod_config_get_softdeps }, |
177 | }; | |
178 | size_t i; | |
179 | ||
180 | for (i = 0; i < ARRAY_SIZE(ci); i++) { | |
181 | struct kmod_config_iter *iter = ci[i].get_iter(ctx); | |
182 | ||
183 | if (iter == NULL) | |
184 | continue; | |
185 | ||
186 | while (kmod_config_iter_next(iter)) { | |
187 | const char *val; | |
188 | ||
189 | printf("%s %s", ci[i].name, | |
190 | kmod_config_iter_get_key(iter)); | |
191 | val = kmod_config_iter_get_value(iter); | |
192 | if (val != NULL) { | |
193 | putchar(' '); | |
194 | puts(val); | |
195 | } else | |
196 | putchar('\n'); | |
197 | } | |
198 | ||
199 | kmod_config_iter_free_iter(iter); | |
200 | } | |
201 | ||
28f32c65 | 202 | puts("\n# End of configuration files. Dumping indexes now:\n"); |
09e9ae58 LDM |
203 | fflush(stdout); |
204 | ||
49a16375 LDM |
205 | kmod_dump_index(ctx, KMOD_INDEX_MODULES_ALIAS, STDOUT_FILENO); |
206 | kmod_dump_index(ctx, KMOD_INDEX_MODULES_SYMBOL, STDOUT_FILENO); | |
207 | ||
bc43496a | 208 | return 0; |
c3d0a5f2 GSB |
209 | } |
210 | ||
211 | static int show_modversions(struct kmod_ctx *ctx, const char *filename) | |
212 | { | |
0e3e2f43 GSB |
213 | struct kmod_list *l, *list = NULL; |
214 | struct kmod_module *mod; | |
215 | int err = kmod_module_new_from_path(ctx, filename, &mod); | |
216 | if (err < 0) { | |
217 | LOG("Module %s not found.\n", filename); | |
218 | return err; | |
219 | } | |
220 | ||
221 | err = kmod_module_get_versions(mod, &list); | |
222 | if (err < 0) { | |
63698377 | 223 | LOG("could not get modversions of %s: %s\n", |
0e3e2f43 GSB |
224 | filename, strerror(-err)); |
225 | kmod_module_unref(mod); | |
226 | return err; | |
227 | } | |
228 | ||
229 | kmod_list_foreach(l, list) { | |
230 | const char *symbol = kmod_module_version_get_symbol(l); | |
231 | uint64_t crc = kmod_module_version_get_crc(l); | |
232 | printf("0x%08"PRIx64"\t%s\n", crc, symbol); | |
233 | } | |
234 | kmod_module_versions_free_list(list); | |
235 | kmod_module_unref(mod); | |
236 | return 0; | |
c3d0a5f2 GSB |
237 | } |
238 | ||
3ada8df8 YK |
239 | static int show_exports(struct kmod_ctx *ctx, const char *filename) |
240 | { | |
241 | struct kmod_list *l, *list = NULL; | |
242 | struct kmod_module *mod; | |
243 | int err = kmod_module_new_from_path(ctx, filename, &mod); | |
244 | if (err < 0) { | |
245 | LOG("Module %s not found.\n", filename); | |
246 | return err; | |
247 | } | |
248 | ||
249 | err = kmod_module_get_symbols(mod, &list); | |
250 | if (err < 0) { | |
251 | LOG("could not get symbols of %s: %s\n", | |
252 | filename, strerror(-err)); | |
253 | kmod_module_unref(mod); | |
254 | return err; | |
255 | } | |
256 | ||
257 | kmod_list_foreach(l, list) { | |
258 | const char *symbol = kmod_module_symbol_get_symbol(l); | |
259 | uint64_t crc = kmod_module_symbol_get_crc(l); | |
260 | printf("0x%08"PRIx64"\t%s\n", crc, symbol); | |
261 | } | |
262 | kmod_module_symbols_free_list(list); | |
263 | kmod_module_unref(mod); | |
264 | return 0; | |
265 | } | |
266 | ||
8f192210 LDM |
267 | static int command_do(struct kmod_module *module, const char *type, |
268 | const char *command, const char *cmdline_opts) | |
c3d0a5f2 GSB |
269 | { |
270 | const char *modname = kmod_module_get_name(module); | |
271 | char *p, *cmd = NULL; | |
272 | size_t cmdlen, cmdline_opts_len, varlen; | |
273 | int ret = 0; | |
274 | ||
275 | if (cmdline_opts == NULL) | |
276 | cmdline_opts = ""; | |
277 | cmdline_opts_len = strlen(cmdline_opts); | |
278 | ||
279 | cmd = strdup(command); | |
280 | if (cmd == NULL) | |
281 | return -ENOMEM; | |
282 | cmdlen = strlen(cmd); | |
283 | varlen = sizeof("$CMDLINE_OPTS") - 1; | |
284 | while ((p = strstr(cmd, "$CMDLINE_OPTS")) != NULL) { | |
285 | size_t prefixlen = p - cmd; | |
286 | size_t suffixlen = cmdlen - prefixlen - varlen; | |
287 | size_t slen = cmdlen - varlen + cmdline_opts_len; | |
288 | char *suffix = p + varlen; | |
289 | char *s = malloc(slen + 1); | |
290 | if (s == NULL) { | |
291 | free(cmd); | |
292 | return -ENOMEM; | |
293 | } | |
294 | memcpy(s, cmd, p - cmd); | |
295 | memcpy(s + prefixlen, cmdline_opts, cmdline_opts_len); | |
296 | memcpy(s + prefixlen + cmdline_opts_len, suffix, suffixlen); | |
297 | s[slen] = '\0'; | |
298 | ||
299 | free(cmd); | |
300 | cmd = s; | |
301 | cmdlen = slen; | |
302 | } | |
303 | ||
304 | SHOW("%s %s\n", type, cmd); | |
305 | if (dry_run) | |
306 | goto end; | |
307 | ||
308 | setenv("MODPROBE_MODULE", modname, 1); | |
309 | ret = system(cmd); | |
310 | unsetenv("MODPROBE_MODULE"); | |
311 | if (ret == -1 || WEXITSTATUS(ret)) { | |
312 | LOG("Error running %s command for %s\n", type, modname); | |
313 | if (ret != -1) | |
314 | ret = -WEXITSTATUS(ret); | |
315 | } | |
316 | ||
317 | end: | |
318 | free(cmd); | |
319 | return ret; | |
320 | } | |
321 | ||
a872bba2 | 322 | static int rmmod_do_remove_module(struct kmod_module *mod) |
c3d0a5f2 | 323 | { |
a872bba2 | 324 | const char *modname = kmod_module_get_name(mod); |
69a19743 | 325 | struct kmod_list *deps, *itr; |
a872bba2 | 326 | int flags = 0, err; |
e793f1ea | 327 | |
a872bba2 | 328 | SHOW("rmmod %s\n", kmod_module_get_name(mod)); |
c3d0a5f2 | 329 | |
a872bba2 LDM |
330 | if (dry_run) |
331 | return 0; | |
c3d0a5f2 | 332 | |
a872bba2 LDM |
333 | if (force) |
334 | flags |= KMOD_REMOVE_FORCE; | |
c3d0a5f2 | 335 | |
a872bba2 LDM |
336 | err = kmod_module_remove_module(mod, flags); |
337 | if (err == -EEXIST) { | |
338 | if (!first_time) | |
339 | err = 0; | |
e793f1ea | 340 | else |
a872bba2 | 341 | LOG("Module %s is not in kernel.\n", modname); |
c3d0a5f2 | 342 | } |
e793f1ea | 343 | |
69a19743 DR |
344 | deps = kmod_module_get_dependencies(mod); |
345 | if (deps != NULL) { | |
346 | kmod_list_foreach(itr, deps) { | |
347 | struct kmod_module *dep = kmod_module_get_module(itr); | |
348 | if (kmod_module_get_refcnt(dep) == 0) | |
349 | rmmod_do_remove_module(dep); | |
350 | kmod_module_unref(dep); | |
351 | } | |
352 | kmod_module_unref_list(deps); | |
353 | } | |
354 | ||
e793f1ea GSB |
355 | return err; |
356 | } | |
357 | ||
42b32d30 | 358 | #define RMMOD_FLAG_REMOVE_HOLDERS 0x1 |
a6b540de LDM |
359 | #define RMMOD_FLAG_IGNORE_BUILTIN 0x2 |
360 | static int rmmod_do_module(struct kmod_module *mod, int flags); | |
e793f1ea | 361 | |
7089386e LDM |
362 | /* Remove modules in reverse order */ |
363 | static int rmmod_do_modlist(struct kmod_list *list, bool stop_on_errors) | |
e793f1ea | 364 | { |
a872bba2 LDM |
365 | struct kmod_list *l; |
366 | ||
367 | kmod_list_foreach_reverse(l, list) { | |
368 | struct kmod_module *m = kmod_module_get_module(l); | |
a6b540de | 369 | int r = rmmod_do_module(m, RMMOD_FLAG_IGNORE_BUILTIN); |
a872bba2 LDM |
370 | kmod_module_unref(m); |
371 | ||
372 | if (r < 0 && stop_on_errors) | |
373 | return r; | |
374 | } | |
375 | ||
376 | return 0; | |
c3d0a5f2 GSB |
377 | } |
378 | ||
a6b540de | 379 | static int rmmod_do_module(struct kmod_module *mod, int flags) |
c3d0a5f2 GSB |
380 | { |
381 | const char *modname = kmod_module_get_name(mod); | |
a872bba2 LDM |
382 | struct kmod_list *pre = NULL, *post = NULL; |
383 | const char *cmd = NULL; | |
c3d0a5f2 GSB |
384 | int err; |
385 | ||
c3d0a5f2 | 386 | if (!ignore_commands) { |
e793f1ea GSB |
387 | err = kmod_module_get_softdeps(mod, &pre, &post); |
388 | if (err < 0) { | |
389 | WRN("could not get softdeps of '%s': %s\n", | |
8f192210 | 390 | modname, strerror(-err)); |
c3d0a5f2 | 391 | return err; |
e793f1ea GSB |
392 | } |
393 | ||
c3d0a5f2 | 394 | cmd = kmod_module_get_remove_commands(mod); |
c3d0a5f2 GSB |
395 | } |
396 | ||
a872bba2 | 397 | if (cmd == NULL && !ignore_loaded) { |
9bf60d21 LDM |
398 | int state = kmod_module_get_initstate(mod); |
399 | ||
e5e2a683 | 400 | if (state < 0) { |
9bf60d21 LDM |
401 | if (first_time) { |
402 | LOG("Module %s is not in kernel.\n", modname); | |
e4e1e64a | 403 | err = -ENOENT; |
e4e1e64a LDM |
404 | } else { |
405 | err = 0; | |
e4e1e64a | 406 | } |
f758caf5 DR |
407 | goto error; |
408 | } else if (state == KMOD_MODULE_BUILTIN) { | |
a6b540de | 409 | if (flags & RMMOD_FLAG_IGNORE_BUILTIN) { |
52a0ba82 YK |
410 | err = 0; |
411 | } else { | |
412 | LOG("Module %s is builtin.\n", modname); | |
413 | err = -ENOENT; | |
414 | } | |
f758caf5 | 415 | goto error; |
9bf60d21 LDM |
416 | } |
417 | } | |
418 | ||
7089386e | 419 | rmmod_do_modlist(post, false); |
a872bba2 | 420 | |
d29ed6ef | 421 | if (flags & RMMOD_FLAG_REMOVE_HOLDERS) { |
42b32d30 | 422 | struct kmod_list *holders = kmod_module_get_holders(mod); |
a872bba2 | 423 | |
42b32d30 | 424 | err = rmmod_do_modlist(holders, true); |
9bf60d21 | 425 | if (err < 0) |
a872bba2 | 426 | goto error; |
9bf60d21 LDM |
427 | } |
428 | ||
c010f020 | 429 | if (!ignore_loaded && !cmd) { |
c3d0a5f2 | 430 | int usage = kmod_module_get_refcnt(mod); |
d8a6c0cc | 431 | |
c3d0a5f2 | 432 | if (usage > 0) { |
d8a6c0cc LDM |
433 | if (!quiet_inuse) |
434 | LOG("Module %s is in use.\n", modname); | |
435 | ||
e793f1ea | 436 | err = -EBUSY; |
e793f1ea GSB |
437 | goto error; |
438 | } | |
439 | } | |
440 | ||
a872bba2 LDM |
441 | if (cmd == NULL) |
442 | err = rmmod_do_remove_module(mod); | |
443 | else | |
444 | err = command_do(mod, "remove", cmd, NULL); | |
d8a6c0cc | 445 | |
a872bba2 LDM |
446 | if (err < 0) |
447 | goto error; | |
c9a14448 | 448 | |
7089386e | 449 | rmmod_do_modlist(pre, false); |
0e9bd2d1 | 450 | |
e793f1ea GSB |
451 | error: |
452 | kmod_module_unref_list(pre); | |
453 | kmod_module_unref_list(post); | |
a872bba2 | 454 | |
c3d0a5f2 GSB |
455 | return err; |
456 | } | |
457 | ||
569f1609 | 458 | static int rmmod(struct kmod_ctx *ctx, const char *alias) |
c3d0a5f2 GSB |
459 | { |
460 | struct kmod_list *l, *list = NULL; | |
461 | int err; | |
462 | ||
463 | err = kmod_module_new_from_lookup(ctx, alias, &list); | |
e5e2a683 | 464 | if (err < 0) |
c3d0a5f2 | 465 | return err; |
e5e2a683 | 466 | |
f758caf5 | 467 | if (list == NULL) { |
e5e2a683 | 468 | LOG("Module %s not found.\n", alias); |
f758caf5 DR |
469 | err = -ENOENT; |
470 | } | |
c3d0a5f2 GSB |
471 | |
472 | kmod_list_foreach(l, list) { | |
473 | struct kmod_module *mod = kmod_module_get_module(l); | |
d29ed6ef LDM |
474 | int flags = remove_holders ? RMMOD_FLAG_REMOVE_HOLDERS : 0; |
475 | ||
476 | err = rmmod_do_module(mod, flags); | |
c3d0a5f2 GSB |
477 | kmod_module_unref(mod); |
478 | if (err < 0) | |
479 | break; | |
480 | } | |
481 | ||
482 | kmod_module_unref_list(list); | |
483 | return err; | |
484 | } | |
485 | ||
c3d0a5f2 GSB |
486 | static int rmmod_all(struct kmod_ctx *ctx, char **args, int nargs) |
487 | { | |
488 | int i, err = 0; | |
489 | ||
490 | for (i = 0; i < nargs; i++) { | |
491 | int r = rmmod(ctx, args[i]); | |
492 | if (r < 0) | |
493 | err = r; | |
494 | } | |
495 | ||
496 | return err; | |
497 | } | |
498 | ||
2e9dcd74 LDM |
499 | static void print_action(struct kmod_module *m, bool install, |
500 | const char *options) | |
501 | { | |
4744ebce LDM |
502 | const char *path; |
503 | ||
504 | if (install) { | |
2e9dcd74 LDM |
505 | printf("install %s %s\n", kmod_module_get_install_commands(m), |
506 | options); | |
4744ebce LDM |
507 | return; |
508 | } | |
509 | ||
510 | path = kmod_module_get_path(m); | |
511 | ||
512 | if (path == NULL) { | |
ace742fa LDM |
513 | /* |
514 | * Either a builtin module, or an alias, print only for | |
515 | * builtin | |
516 | */ | |
517 | if (kmod_module_get_initstate(m) == KMOD_MODULE_BUILTIN) | |
518 | printf("builtin %s\n", kmod_module_get_name(m)); | |
4744ebce LDM |
519 | } else |
520 | printf("insmod %s %s\n", kmod_module_get_path(m), options); | |
2e9dcd74 LDM |
521 | } |
522 | ||
569f1609 | 523 | static int insmod(struct kmod_ctx *ctx, const char *alias, |
8f192210 | 524 | const char *extra_options) |
c3d0a5f2 GSB |
525 | { |
526 | struct kmod_list *l, *list = NULL; | |
2e9dcd74 LDM |
527 | int err, flags = 0; |
528 | ||
529 | void (*show)(struct kmod_module *m, bool install, | |
530 | const char *options) = NULL; | |
c3d0a5f2 GSB |
531 | |
532 | err = kmod_module_new_from_lookup(ctx, alias, &list); | |
e5e2a683 | 533 | |
b87d01d6 LA |
534 | if (list == NULL || err < 0) { |
535 | LOG("Module %s not found in directory %s\n", alias, | |
536 | ctx ? kmod_get_dirname(ctx) : "(missing)"); | |
e2719b32 LDM |
537 | return -ENOENT; |
538 | } | |
c3d0a5f2 | 539 | |
2e9dcd74 LDM |
540 | if (strip_modversion || force) |
541 | flags |= KMOD_PROBE_FORCE_MODVERSION; | |
542 | if (strip_vermagic || force) | |
543 | flags |= KMOD_PROBE_FORCE_VERMAGIC; | |
544 | if (ignore_commands) | |
545 | flags |= KMOD_PROBE_IGNORE_COMMAND; | |
546 | if (ignore_loaded) | |
547 | flags |= KMOD_PROBE_IGNORE_LOADED; | |
548 | if (dry_run) | |
549 | flags |= KMOD_PROBE_DRY_RUN; | |
550 | if (do_show || verbose > DEFAULT_VERBOSE) | |
551 | show = &print_action; | |
552 | ||
36ddee65 | 553 | flags |= KMOD_PROBE_APPLY_BLACKLIST_ALIAS_ONLY; |
2e9dcd74 LDM |
554 | |
555 | if (use_blacklist) | |
556 | flags |= KMOD_PROBE_APPLY_BLACKLIST; | |
557 | if (first_time) | |
814a57ba | 558 | flags |= KMOD_PROBE_FAIL_ON_LOADED; |
c3d0a5f2 GSB |
559 | |
560 | kmod_list_foreach(l, list) { | |
561 | struct kmod_module *mod = kmod_module_get_module(l); | |
8b013767 | 562 | |
8122985d LDM |
563 | if (lookup_only) |
564 | printf("%s\n", kmod_module_get_name(mod)); | |
8b013767 | 565 | else { |
2e9dcd74 LDM |
566 | err = kmod_module_probe_insert_module(mod, flags, |
567 | extra_options, NULL, NULL, show); | |
568 | } | |
8b013767 | 569 | |
297a3182 DR |
570 | if (err >= 0) |
571 | /* ignore flag return values such as a mod being blacklisted */ | |
572 | err = 0; | |
573 | else { | |
574 | switch (err) { | |
575 | case -EEXIST: | |
576 | ERR("could not insert '%s': Module already in kernel\n", | |
577 | kmod_module_get_name(mod)); | |
578 | break; | |
ccb64d1e DR |
579 | case -ENOENT: |
580 | ERR("could not insert '%s': Unknown symbol in module, " | |
581 | "or unknown parameter (see dmesg)\n", | |
582 | kmod_module_get_name(mod)); | |
583 | break; | |
297a3182 DR |
584 | default: |
585 | ERR("could not insert '%s': %s\n", | |
586 | kmod_module_get_name(mod), | |
587 | strerror(-err)); | |
588 | break; | |
589 | } | |
8b013767 | 590 | } |
2e9dcd74 | 591 | |
c3d0a5f2 | 592 | kmod_module_unref(mod); |
c3d0a5f2 GSB |
593 | } |
594 | ||
595 | kmod_module_unref_list(list); | |
596 | return err; | |
597 | } | |
598 | ||
c3d0a5f2 GSB |
599 | static int insmod_all(struct kmod_ctx *ctx, char **args, int nargs) |
600 | { | |
601 | int i, err = 0; | |
602 | ||
603 | for (i = 0; i < nargs; i++) { | |
604 | int r = insmod(ctx, args[i], NULL); | |
605 | if (r < 0) | |
606 | err = r; | |
607 | } | |
608 | ||
609 | return err; | |
610 | } | |
611 | ||
612 | static void env_modprobe_options_append(const char *value) | |
613 | { | |
614 | const char *old = getenv("MODPROBE_OPTIONS"); | |
615 | char *env; | |
616 | ||
617 | if (old == NULL) { | |
618 | setenv("MODPROBE_OPTIONS", value, 1); | |
619 | return; | |
620 | } | |
621 | ||
622 | if (asprintf(&env, "%s %s", old, value) < 0) { | |
623 | ERR("could not append value to $MODPROBE_OPTIONS\n"); | |
624 | return; | |
625 | } | |
626 | ||
627 | if (setenv("MODPROBE_OPTIONS", env, 1) < 0) | |
628 | ERR("could not setenv(MODPROBE_OPTIONS, \"%s\")\n", env); | |
629 | free(env); | |
630 | } | |
631 | ||
632 | static int options_from_array(char **args, int nargs, char **output) | |
633 | { | |
634 | char *opts = NULL; | |
635 | size_t optslen = 0; | |
636 | int i, err = 0; | |
637 | ||
638 | for (i = 1; i < nargs; i++) { | |
639 | size_t len = strlen(args[i]); | |
640 | size_t qlen = 0; | |
641 | const char *value; | |
642 | void *tmp; | |
643 | ||
644 | value = strchr(args[i], '='); | |
645 | if (value) { | |
646 | value++; | |
647 | if (*value != '"' && *value != '\'') { | |
648 | if (strchr(value, ' ')) | |
649 | qlen = 2; | |
650 | } | |
651 | } | |
652 | ||
653 | tmp = realloc(opts, optslen + len + qlen + 2); | |
654 | if (!tmp) { | |
655 | err = -errno; | |
656 | free(opts); | |
657 | opts = NULL; | |
658 | ERR("could not gather module options: out-of-memory\n"); | |
659 | break; | |
660 | } | |
661 | opts = tmp; | |
662 | if (optslen > 0) { | |
663 | opts[optslen] = ' '; | |
664 | optslen++; | |
665 | } | |
666 | if (qlen == 0) { | |
667 | memcpy(opts + optslen, args[i], len + 1); | |
668 | optslen += len; | |
669 | } else { | |
670 | size_t keylen = value - args[i]; | |
671 | size_t valuelen = len - keylen; | |
672 | memcpy(opts + optslen, args[i], keylen); | |
673 | optslen += keylen; | |
674 | opts[optslen] = '"'; | |
675 | optslen++; | |
676 | memcpy(opts + optslen, value, valuelen); | |
677 | optslen += valuelen; | |
678 | opts[optslen] = '"'; | |
679 | optslen++; | |
680 | opts[optslen] = '\0'; | |
681 | } | |
682 | } | |
683 | ||
684 | *output = opts; | |
685 | return err; | |
686 | } | |
687 | ||
688 | static char **prepend_options_from_env(int *p_argc, char **orig_argv) | |
689 | { | |
690 | const char *p, *env = getenv("MODPROBE_OPTIONS"); | |
d890179b | 691 | char **new_argv, *str_end, *str, *s, *quote; |
c3d0a5f2 GSB |
692 | int i, argc = *p_argc; |
693 | size_t envlen, space_count = 0; | |
694 | ||
695 | if (env == NULL) | |
696 | return orig_argv; | |
697 | ||
698 | for (p = env; *p != '\0'; p++) { | |
699 | if (*p == ' ') | |
700 | space_count++; | |
701 | } | |
702 | ||
703 | envlen = p - env; | |
704 | new_argv = malloc(sizeof(char *) * (argc + space_count + 3 + envlen)); | |
705 | if (new_argv == NULL) | |
706 | return NULL; | |
707 | ||
708 | new_argv[0] = orig_argv[0]; | |
d890179b | 709 | str = (char *) (new_argv + argc + space_count + 3); |
c3d0a5f2 GSB |
710 | memcpy(str, env, envlen + 1); |
711 | ||
d890179b | 712 | str_end = str + envlen; |
c3d0a5f2 GSB |
713 | |
714 | quote = NULL; | |
715 | for (i = 1, s = str; *s != '\0'; s++) { | |
716 | if (quote == NULL) { | |
717 | if (*s == ' ') { | |
718 | new_argv[i] = str; | |
719 | i++; | |
720 | *s = '\0'; | |
721 | str = s + 1; | |
722 | } else if (*s == '"' || *s == '\'') | |
723 | quote = s; | |
724 | } else { | |
725 | if (*s == *quote) { | |
726 | if (quote == str) { | |
727 | new_argv[i] = str + 1; | |
728 | i++; | |
729 | *s = '\0'; | |
730 | str = s + 1; | |
731 | } else { | |
732 | char *it; | |
733 | for (it = quote; it < s - 1; it++) | |
734 | it[0] = it[1]; | |
735 | for (it = s - 1; it < str_end - 2; it++) | |
736 | it[0] = it[2]; | |
737 | str_end -= 2; | |
738 | *str_end = '\0'; | |
739 | s -= 2; | |
740 | } | |
741 | quote = NULL; | |
742 | } | |
743 | } | |
744 | } | |
745 | if (str < s) { | |
746 | new_argv[i] = str; | |
747 | i++; | |
748 | } | |
749 | ||
750 | memcpy(new_argv + i, orig_argv + 1, sizeof(char *) * (argc - 1)); | |
757b3599 | 751 | new_argv[i + argc - 1] = NULL; |
c3d0a5f2 GSB |
752 | *p_argc = i + argc - 1; |
753 | ||
754 | return new_argv; | |
755 | } | |
756 | ||
fa29c0ee | 757 | static int do_modprobe(int argc, char **orig_argv) |
c3d0a5f2 GSB |
758 | { |
759 | struct kmod_ctx *ctx; | |
760 | char **args = NULL, **argv; | |
cb8d4d3e GSB |
761 | const char **config_paths = NULL; |
762 | int nargs = 0, n_config_paths = 0; | |
c3d0a5f2 GSB |
763 | char dirname_buf[PATH_MAX]; |
764 | const char *dirname = NULL; | |
765 | const char *root = NULL; | |
c3d0a5f2 | 766 | const char *kversion = NULL; |
c3d0a5f2 GSB |
767 | int use_all = 0; |
768 | int do_remove = 0; | |
769 | int do_show_config = 0; | |
770 | int do_show_modversions = 0; | |
3ada8df8 | 771 | int do_show_exports = 0; |
c3d0a5f2 GSB |
772 | int err; |
773 | ||
774 | argv = prepend_options_from_env(&argc, orig_argv); | |
775 | if (argv == NULL) { | |
d9a2e155 | 776 | ERR("Could not prepend options from command line\n"); |
c3d0a5f2 GSB |
777 | return EXIT_FAILURE; |
778 | } | |
779 | ||
780 | for (;;) { | |
781 | int c, idx = 0; | |
782 | c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); | |
783 | if (c == -1) | |
784 | break; | |
785 | switch (c) { | |
786 | case 'a': | |
787 | log_priority = LOG_WARNING; | |
788 | use_all = 1; | |
789 | break; | |
790 | case 'r': | |
791 | do_remove = 1; | |
792 | break; | |
793 | case 5: | |
42b32d30 | 794 | remove_holders = 1; |
c3d0a5f2 GSB |
795 | break; |
796 | case 'R': | |
8122985d | 797 | lookup_only = 1; |
c3d0a5f2 GSB |
798 | break; |
799 | case 3: | |
800 | first_time = 1; | |
801 | break; | |
802 | case 'i': | |
803 | ignore_commands = 1; | |
804 | break; | |
805 | case 'b': | |
806 | use_blacklist = 1; | |
807 | break; | |
808 | case 'f': | |
809 | force = 1; | |
810 | break; | |
811 | case 2: | |
812 | strip_modversion = 1; | |
813 | break; | |
814 | case 1: | |
815 | strip_vermagic = 1; | |
816 | break; | |
c3d0a5f2 GSB |
817 | case 'D': |
818 | ignore_loaded = 1; | |
819 | dry_run = 1; | |
525fa07b | 820 | do_show = 1; |
c3d0a5f2 GSB |
821 | break; |
822 | case 'c': | |
823 | do_show_config = 1; | |
824 | break; | |
825 | case 4: | |
826 | do_show_modversions = 1; | |
827 | break; | |
3ada8df8 YK |
828 | case 6: |
829 | do_show_exports = 1; | |
830 | break; | |
c3d0a5f2 GSB |
831 | case 'n': |
832 | dry_run = 1; | |
833 | break; | |
cb8d4d3e GSB |
834 | case 'C': { |
835 | size_t bytes = sizeof(char *) * (n_config_paths + 2); | |
836 | void *tmp = realloc(config_paths, bytes); | |
837 | if (!tmp) { | |
d9a2e155 LDM |
838 | ERR("out-of-memory\n"); |
839 | err = -1; | |
840 | goto done; | |
cb8d4d3e GSB |
841 | } |
842 | config_paths = tmp; | |
843 | config_paths[n_config_paths] = optarg; | |
844 | n_config_paths++; | |
845 | config_paths[n_config_paths] = NULL; | |
846 | ||
c3d0a5f2 GSB |
847 | env_modprobe_options_append("-C"); |
848 | env_modprobe_options_append(optarg); | |
c3d0a5f2 | 849 | break; |
cb8d4d3e | 850 | } |
c3d0a5f2 GSB |
851 | case 'd': |
852 | root = optarg; | |
853 | break; | |
854 | case 'S': | |
855 | kversion = optarg; | |
856 | break; | |
857 | case 's': | |
858 | env_modprobe_options_append("-s"); | |
859 | use_syslog = 1; | |
860 | break; | |
861 | case 'q': | |
862 | env_modprobe_options_append("-q"); | |
ae7ebe87 | 863 | verbose = LOG_EMERG; |
c3d0a5f2 GSB |
864 | break; |
865 | case 'v': | |
866 | env_modprobe_options_append("-v"); | |
867 | verbose++; | |
868 | break; | |
869 | case 'V': | |
870 | puts(PACKAGE " version " VERSION); | |
655de275 | 871 | puts(KMOD_FEATURES); |
d9a2e155 | 872 | err = 0; |
4434d8ba | 873 | goto done; |
c3d0a5f2 | 874 | case 'h': |
4a2e20df | 875 | help(); |
d9a2e155 | 876 | err = 0; |
4434d8ba | 877 | goto done; |
c3d0a5f2 | 878 | case '?': |
d9a2e155 LDM |
879 | err = -1; |
880 | goto done; | |
c3d0a5f2 | 881 | default: |
d9a2e155 LDM |
882 | ERR("unexpected getopt_long() value '%c'.\n", c); |
883 | err = -1; | |
884 | goto done; | |
c3d0a5f2 GSB |
885 | } |
886 | } | |
887 | ||
888 | args = argv + optind; | |
889 | nargs = argc - optind; | |
890 | ||
92aad749 | 891 | log_open(use_syslog); |
d9a2e155 | 892 | |
b09668cf | 893 | if (!do_show_config) { |
c3d0a5f2 | 894 | if (nargs == 0) { |
d9a2e155 LDM |
895 | ERR("missing parameters. See -h.\n"); |
896 | err = -1; | |
897 | goto done; | |
c3d0a5f2 GSB |
898 | } |
899 | } | |
900 | ||
c3d0a5f2 GSB |
901 | if (root != NULL || kversion != NULL) { |
902 | struct utsname u; | |
903 | if (root == NULL) | |
904 | root = ""; | |
905 | if (kversion == NULL) { | |
906 | if (uname(&u) < 0) { | |
d9a2e155 LDM |
907 | ERR("uname() failed: %m\n"); |
908 | err = -1; | |
909 | goto done; | |
c3d0a5f2 GSB |
910 | } |
911 | kversion = u.release; | |
912 | } | |
8f192210 | 913 | snprintf(dirname_buf, sizeof(dirname_buf), |
c5b37dba | 914 | "%s/lib/modules/%s", root, |
8f192210 | 915 | kversion); |
c3d0a5f2 GSB |
916 | dirname = dirname_buf; |
917 | } | |
918 | ||
cb8d4d3e | 919 | ctx = kmod_new(dirname, config_paths); |
c3d0a5f2 | 920 | if (!ctx) { |
d9a2e155 LDM |
921 | ERR("kmod_new() failed!\n"); |
922 | err = -1; | |
923 | goto done; | |
c3d0a5f2 | 924 | } |
c3d0a5f2 | 925 | |
52a50fe2 | 926 | log_setup_kmod_log(ctx, verbose); |
d9a2e155 LDM |
927 | |
928 | kmod_load_resources(ctx); | |
c3d0a5f2 | 929 | |
b09668cf | 930 | if (do_show_config) |
c3d0a5f2 GSB |
931 | err = show_config(ctx); |
932 | else if (do_show_modversions) | |
933 | err = show_modversions(ctx, args[0]); | |
3ada8df8 YK |
934 | else if (do_show_exports) |
935 | err = show_exports(ctx, args[0]); | |
c3d0a5f2 | 936 | else if (do_remove) |
c1b84540 | 937 | err = rmmod_all(ctx, args, nargs); |
c3d0a5f2 GSB |
938 | else if (use_all) |
939 | err = insmod_all(ctx, args, nargs); | |
940 | else { | |
941 | char *opts; | |
942 | err = options_from_array(args, nargs, &opts); | |
943 | if (err == 0) { | |
944 | err = insmod(ctx, args[0], opts); | |
945 | free(opts); | |
946 | } | |
947 | } | |
948 | ||
949 | kmod_unref(ctx); | |
950 | ||
d9a2e155 | 951 | done: |
92aad749 | 952 | log_close(); |
c3d0a5f2 GSB |
953 | |
954 | if (argv != orig_argv) | |
955 | free(argv); | |
8f192210 | 956 | |
cb8d4d3e | 957 | free(config_paths); |
c3d0a5f2 | 958 | |
d9a2e155 | 959 | return err >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; |
c3d0a5f2 | 960 | } |
fa29c0ee | 961 | |
fa29c0ee LDM |
962 | const struct kmod_cmd kmod_cmd_compat_modprobe = { |
963 | .name = "modprobe", | |
964 | .cmd = do_modprobe, | |
965 | .help = "compat modprobe command", | |
966 | }; |