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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> | |
2b98ed88 | 35 | #include <shared/util.h> |
576dd439 | 36 | #include <shared/macro.h> |
c3d0a5f2 | 37 | |
f357866d | 38 | #include <libkmod/libkmod.h> |
c2e4286b | 39 | |
4a2e20df LDM |
40 | #include "kmod.h" |
41 | ||
c3d0a5f2 GSB |
42 | static int log_priority = LOG_CRIT; |
43 | static int use_syslog = 0; | |
fcb0ce94 | 44 | #define LOG(...) log_printf(log_priority, __VA_ARGS__) |
c3d0a5f2 GSB |
45 | |
46 | #define DEFAULT_VERBOSE LOG_WARNING | |
47 | static int verbose = DEFAULT_VERBOSE; | |
525fa07b | 48 | static int do_show = 0; |
c3d0a5f2 GSB |
49 | static int dry_run = 0; |
50 | static int ignore_loaded = 0; | |
8122985d | 51 | static int lookup_only = 0; |
c3d0a5f2 GSB |
52 | static int first_time = 0; |
53 | static int ignore_commands = 0; | |
54 | static int use_blacklist = 0; | |
55 | static int force = 0; | |
56 | static int strip_modversion = 0; | |
57 | static int strip_vermagic = 0; | |
42b32d30 | 58 | static int remove_holders = 0; |
2b98ed88 | 59 | static unsigned long long wait_msec = 0; |
d8a6c0cc | 60 | static int quiet_inuse = 0; |
c3d0a5f2 | 61 | |
2b98ed88 | 62 | static const char cmdopts_s[] = "arw:RibfDcnC:d:S:sqvVh"; |
c3d0a5f2 GSB |
63 | static const struct option cmdopts[] = { |
64 | {"all", no_argument, 0, 'a'}, | |
2b98ed88 | 65 | |
c3d0a5f2 GSB |
66 | {"remove", no_argument, 0, 'r'}, |
67 | {"remove-dependencies", no_argument, 0, 5}, | |
42b32d30 | 68 | {"remove-holders", no_argument, 0, 5}, |
2b98ed88 LDM |
69 | {"wait", required_argument, 0, 'w'}, |
70 | ||
c3d0a5f2 GSB |
71 | {"resolve-alias", no_argument, 0, 'R'}, |
72 | {"first-time", no_argument, 0, 3}, | |
73 | {"ignore-install", no_argument, 0, 'i'}, | |
74 | {"ignore-remove", no_argument, 0, 'i'}, | |
75 | {"use-blacklist", no_argument, 0, 'b'}, | |
76 | {"force", no_argument, 0, 'f'}, | |
77 | {"force-modversion", no_argument, 0, 2}, | |
78 | {"force-vermagic", no_argument, 0, 1}, | |
79 | ||
c3d0a5f2 GSB |
80 | {"show-depends", no_argument, 0, 'D'}, |
81 | {"showconfig", no_argument, 0, 'c'}, | |
82 | {"show-config", no_argument, 0, 'c'}, | |
83 | {"show-modversions", no_argument, 0, 4}, | |
84 | {"dump-modversions", no_argument, 0, 4}, | |
3ada8df8 | 85 | {"show-exports", no_argument, 0, 6}, |
c3d0a5f2 GSB |
86 | |
87 | {"dry-run", no_argument, 0, 'n'}, | |
88 | {"show", no_argument, 0, 'n'}, | |
89 | ||
90 | {"config", required_argument, 0, 'C'}, | |
91 | {"dirname", required_argument, 0, 'd'}, | |
92 | {"set-version", required_argument, 0, 'S'}, | |
93 | ||
94 | {"syslog", no_argument, 0, 's'}, | |
95 | {"quiet", no_argument, 0, 'q'}, | |
96 | {"verbose", no_argument, 0, 'v'}, | |
97 | {"version", no_argument, 0, 'V'}, | |
98 | {"help", no_argument, 0, 'h'}, | |
99 | {NULL, 0, 0, 0} | |
100 | }; | |
101 | ||
4a2e20df | 102 | static void help(void) |
c3d0a5f2 | 103 | { |
34e06bfb | 104 | printf("Usage:\n" |
c3d0a5f2 GSB |
105 | "\t%s [options] [-i] [-b] modulename\n" |
106 | "\t%s [options] -a [-i] [-b] modulename [modulename...]\n" | |
107 | "\t%s [options] -r [-i] modulename\n" | |
108 | "\t%s [options] -r -a [-i] modulename [modulename...]\n" | |
c3d0a5f2 GSB |
109 | "\t%s [options] -c\n" |
110 | "\t%s [options] --dump-modversions filename\n" | |
111 | "Management Options:\n" | |
ab70dce1 GSB |
112 | "\t-a, --all Consider every non-argument to\n" |
113 | "\t be a module name to be inserted\n" | |
114 | "\t or removed (-r)\n" | |
115 | "\t-r, --remove Remove modules instead of inserting\n" | |
42b32d30 LDM |
116 | "\t --remove-dependencies Deprecated: use --remove-holders\n" |
117 | "\t --remove-holders Also remove module holders (use together with -r)\n" | |
2b98ed88 LDM |
118 | "\t-w, --wait <MSEC> When removing a module, wait up to MSEC for\n" |
119 | "\t module's refcount to become 0 so it can be\n" | |
120 | "\t removed (use together with -r)\n" | |
ab70dce1 GSB |
121 | "\t --first-time Fail if module already inserted or removed\n" |
122 | "\t-i, --ignore-install Ignore install commands\n" | |
123 | "\t-i, --ignore-remove Ignore remove commands\n" | |
124 | "\t-b, --use-blacklist Apply blacklist to resolved alias.\n" | |
125 | "\t-f, --force Force module insertion or removal.\n" | |
126 | "\t implies --force-modversions and\n" | |
127 | "\t --force-vermagic\n" | |
128 | "\t --force-modversion Ignore module's version\n" | |
129 | "\t --force-vermagic Ignore module's version magic\n" | |
c3d0a5f2 GSB |
130 | "\n" |
131 | "Query Options:\n" | |
081fff2c | 132 | "\t-R, --resolve-alias Only lookup and print alias and exit\n" |
ab70dce1 GSB |
133 | "\t-D, --show-depends Only print module dependencies and exit\n" |
134 | "\t-c, --showconfig Print out known configuration and exit\n" | |
135 | "\t-c, --show-config Same as --showconfig\n" | |
136 | "\t --show-modversions Dump module symbol version and exit\n" | |
137 | "\t --dump-modversions Same as --show-modversions\n" | |
3ada8df8 | 138 | "\t --show-exports Only print module exported symbol versions and exit\n" |
c3d0a5f2 GSB |
139 | "\n" |
140 | "General Options:\n" | |
ab70dce1 GSB |
141 | "\t-n, --dry-run Do not execute operations, just print out\n" |
142 | "\t-n, --show Same as --dry-run\n" | |
c3d0a5f2 | 143 | |
2c96693e | 144 | "\t-C, --config=FILE Use FILE instead of default search paths\n" |
9d1fb317 | 145 | "\t-d, --dirname=DIR Use DIR as filesystem root for " MODULE_DIRECTORY "\n" |
ab70dce1 | 146 | "\t-S, --set-version=VERSION Use VERSION instead of `uname -r`\n" |
c3d0a5f2 GSB |
147 | |
148 | "\t-s, --syslog print to syslog, not stderr\n" | |
149 | "\t-q, --quiet disable messages\n" | |
150 | "\t-v, --verbose enables more messages\n" | |
151 | "\t-V, --version show version\n" | |
152 | "\t-h, --help show this help\n", | |
7c04aeee LDM |
153 | program_invocation_short_name, program_invocation_short_name, |
154 | program_invocation_short_name, program_invocation_short_name, | |
155 | program_invocation_short_name, program_invocation_short_name); | |
c3d0a5f2 GSB |
156 | } |
157 | ||
1958af88 | 158 | _printf_format_(1, 2) |
c3d0a5f2 GSB |
159 | static inline void _show(const char *fmt, ...) |
160 | { | |
161 | va_list args; | |
162 | ||
525fa07b | 163 | if (!do_show && verbose <= DEFAULT_VERBOSE) |
c3d0a5f2 GSB |
164 | return; |
165 | ||
166 | va_start(args, fmt); | |
167 | vfprintf(stdout, fmt, args); | |
168 | fflush(stdout); | |
169 | va_end(args); | |
170 | } | |
c3d0a5f2 GSB |
171 | #define SHOW(...) _show(__VA_ARGS__) |
172 | ||
c3d0a5f2 GSB |
173 | static int show_config(struct kmod_ctx *ctx) |
174 | { | |
bc43496a LDM |
175 | struct config_iterators { |
176 | const char *name; | |
177 | struct kmod_config_iter *(*get_iter)(const struct kmod_ctx *ctx); | |
178 | } ci[] = { | |
179 | { "blacklist", kmod_config_get_blacklists }, | |
180 | { "install", kmod_config_get_install_commands }, | |
181 | { "remove", kmod_config_get_remove_commands }, | |
182 | { "alias", kmod_config_get_aliases }, | |
02629fa0 | 183 | { "options", kmod_config_get_options }, |
bc43496a | 184 | { "softdep", kmod_config_get_softdeps }, |
05828b4a | 185 | { "weakdep", kmod_config_get_weakdeps }, |
bc43496a LDM |
186 | }; |
187 | size_t i; | |
188 | ||
189 | for (i = 0; i < ARRAY_SIZE(ci); i++) { | |
190 | struct kmod_config_iter *iter = ci[i].get_iter(ctx); | |
191 | ||
192 | if (iter == NULL) | |
193 | continue; | |
194 | ||
195 | while (kmod_config_iter_next(iter)) { | |
196 | const char *val; | |
197 | ||
198 | printf("%s %s", ci[i].name, | |
199 | kmod_config_iter_get_key(iter)); | |
200 | val = kmod_config_iter_get_value(iter); | |
201 | if (val != NULL) { | |
202 | putchar(' '); | |
203 | puts(val); | |
204 | } else | |
205 | putchar('\n'); | |
206 | } | |
207 | ||
208 | kmod_config_iter_free_iter(iter); | |
209 | } | |
210 | ||
28f32c65 | 211 | puts("\n# End of configuration files. Dumping indexes now:\n"); |
09e9ae58 LDM |
212 | fflush(stdout); |
213 | ||
49a16375 LDM |
214 | kmod_dump_index(ctx, KMOD_INDEX_MODULES_ALIAS, STDOUT_FILENO); |
215 | kmod_dump_index(ctx, KMOD_INDEX_MODULES_SYMBOL, STDOUT_FILENO); | |
216 | ||
bc43496a | 217 | return 0; |
c3d0a5f2 GSB |
218 | } |
219 | ||
220 | static int show_modversions(struct kmod_ctx *ctx, const char *filename) | |
221 | { | |
0e3e2f43 GSB |
222 | struct kmod_list *l, *list = NULL; |
223 | struct kmod_module *mod; | |
224 | int err = kmod_module_new_from_path(ctx, filename, &mod); | |
225 | if (err < 0) { | |
226 | LOG("Module %s not found.\n", filename); | |
227 | return err; | |
228 | } | |
229 | ||
230 | err = kmod_module_get_versions(mod, &list); | |
231 | if (err < 0) { | |
63698377 | 232 | LOG("could not get modversions of %s: %s\n", |
0e3e2f43 GSB |
233 | filename, strerror(-err)); |
234 | kmod_module_unref(mod); | |
235 | return err; | |
236 | } | |
237 | ||
238 | kmod_list_foreach(l, list) { | |
239 | const char *symbol = kmod_module_version_get_symbol(l); | |
240 | uint64_t crc = kmod_module_version_get_crc(l); | |
241 | printf("0x%08"PRIx64"\t%s\n", crc, symbol); | |
242 | } | |
243 | kmod_module_versions_free_list(list); | |
244 | kmod_module_unref(mod); | |
245 | return 0; | |
c3d0a5f2 GSB |
246 | } |
247 | ||
3ada8df8 YK |
248 | static int show_exports(struct kmod_ctx *ctx, const char *filename) |
249 | { | |
250 | struct kmod_list *l, *list = NULL; | |
251 | struct kmod_module *mod; | |
252 | int err = kmod_module_new_from_path(ctx, filename, &mod); | |
253 | if (err < 0) { | |
254 | LOG("Module %s not found.\n", filename); | |
255 | return err; | |
256 | } | |
257 | ||
258 | err = kmod_module_get_symbols(mod, &list); | |
259 | if (err < 0) { | |
260 | LOG("could not get symbols of %s: %s\n", | |
261 | filename, strerror(-err)); | |
262 | kmod_module_unref(mod); | |
263 | return err; | |
264 | } | |
265 | ||
266 | kmod_list_foreach(l, list) { | |
267 | const char *symbol = kmod_module_symbol_get_symbol(l); | |
268 | uint64_t crc = kmod_module_symbol_get_crc(l); | |
269 | printf("0x%08"PRIx64"\t%s\n", crc, symbol); | |
270 | } | |
271 | kmod_module_symbols_free_list(list); | |
272 | kmod_module_unref(mod); | |
273 | return 0; | |
274 | } | |
275 | ||
8f192210 LDM |
276 | static int command_do(struct kmod_module *module, const char *type, |
277 | const char *command, const char *cmdline_opts) | |
c3d0a5f2 GSB |
278 | { |
279 | const char *modname = kmod_module_get_name(module); | |
280 | char *p, *cmd = NULL; | |
281 | size_t cmdlen, cmdline_opts_len, varlen; | |
282 | int ret = 0; | |
283 | ||
284 | if (cmdline_opts == NULL) | |
285 | cmdline_opts = ""; | |
286 | cmdline_opts_len = strlen(cmdline_opts); | |
287 | ||
288 | cmd = strdup(command); | |
289 | if (cmd == NULL) | |
290 | return -ENOMEM; | |
291 | cmdlen = strlen(cmd); | |
292 | varlen = sizeof("$CMDLINE_OPTS") - 1; | |
293 | while ((p = strstr(cmd, "$CMDLINE_OPTS")) != NULL) { | |
294 | size_t prefixlen = p - cmd; | |
295 | size_t suffixlen = cmdlen - prefixlen - varlen; | |
296 | size_t slen = cmdlen - varlen + cmdline_opts_len; | |
297 | char *suffix = p + varlen; | |
298 | char *s = malloc(slen + 1); | |
299 | if (s == NULL) { | |
300 | free(cmd); | |
301 | return -ENOMEM; | |
302 | } | |
303 | memcpy(s, cmd, p - cmd); | |
304 | memcpy(s + prefixlen, cmdline_opts, cmdline_opts_len); | |
305 | memcpy(s + prefixlen + cmdline_opts_len, suffix, suffixlen); | |
306 | s[slen] = '\0'; | |
307 | ||
308 | free(cmd); | |
309 | cmd = s; | |
310 | cmdlen = slen; | |
311 | } | |
312 | ||
313 | SHOW("%s %s\n", type, cmd); | |
314 | if (dry_run) | |
315 | goto end; | |
316 | ||
317 | setenv("MODPROBE_MODULE", modname, 1); | |
318 | ret = system(cmd); | |
319 | unsetenv("MODPROBE_MODULE"); | |
320 | if (ret == -1 || WEXITSTATUS(ret)) { | |
321 | LOG("Error running %s command for %s\n", type, modname); | |
322 | if (ret != -1) | |
323 | ret = -WEXITSTATUS(ret); | |
324 | } | |
325 | ||
326 | end: | |
327 | free(cmd); | |
328 | return ret; | |
329 | } | |
330 | ||
a872bba2 | 331 | static int rmmod_do_remove_module(struct kmod_module *mod) |
c3d0a5f2 | 332 | { |
a872bba2 | 333 | const char *modname = kmod_module_get_name(mod); |
2b98ed88 LDM |
334 | unsigned long long interval_msec = 0, t0_msec = 0, |
335 | tend_msec = 0; | |
a872bba2 | 336 | int flags = 0, err; |
e793f1ea | 337 | |
6f7ab216 | 338 | SHOW("rmmod %s\n", modname); |
c3d0a5f2 | 339 | |
a872bba2 LDM |
340 | if (dry_run) |
341 | return 0; | |
c3d0a5f2 | 342 | |
a872bba2 LDM |
343 | if (force) |
344 | flags |= KMOD_REMOVE_FORCE; | |
c3d0a5f2 | 345 | |
2b98ed88 LDM |
346 | if (wait_msec) |
347 | flags |= KMOD_REMOVE_NOLOG; | |
348 | ||
349 | do { | |
350 | err = kmod_module_remove_module(mod, flags); | |
351 | if (err == -EEXIST) { | |
352 | if (!first_time) | |
353 | err = 0; | |
354 | else | |
355 | LOG("Module %s is not in kernel.\n", modname); | |
356 | break; | |
357 | } else if (err == -EAGAIN && wait_msec) { | |
358 | unsigned long long until_msec; | |
359 | ||
360 | if (!t0_msec) { | |
361 | t0_msec = now_msec(); | |
362 | tend_msec = t0_msec + wait_msec; | |
363 | interval_msec = 1; | |
364 | } | |
365 | ||
366 | until_msec = get_backoff_delta_msec(t0_msec, tend_msec, | |
367 | &interval_msec); | |
368 | err = sleep_until_msec(until_msec); | |
369 | ||
370 | if (!t0_msec) | |
371 | err = -ENOTSUP; | |
372 | ||
373 | if (err < 0) { | |
374 | ERR("Failed to sleep: %s\n", strerror(-err)); | |
375 | err = -EAGAIN; | |
376 | break; | |
377 | } | |
378 | } else { | |
379 | break; | |
380 | } | |
381 | } while (interval_msec); | |
382 | ||
383 | if (err < 0 && wait_msec) | |
384 | ERR("could not remove '%s': %s\n", modname, strerror(-err)); | |
e793f1ea GSB |
385 | |
386 | return err; | |
387 | } | |
388 | ||
42b32d30 | 389 | #define RMMOD_FLAG_REMOVE_HOLDERS 0x1 |
a6b540de LDM |
390 | #define RMMOD_FLAG_IGNORE_BUILTIN 0x2 |
391 | static int rmmod_do_module(struct kmod_module *mod, int flags); | |
e793f1ea | 392 | |
7089386e LDM |
393 | /* Remove modules in reverse order */ |
394 | static int rmmod_do_modlist(struct kmod_list *list, bool stop_on_errors) | |
e793f1ea | 395 | { |
a872bba2 LDM |
396 | struct kmod_list *l; |
397 | ||
398 | kmod_list_foreach_reverse(l, list) { | |
399 | struct kmod_module *m = kmod_module_get_module(l); | |
a6b540de | 400 | int r = rmmod_do_module(m, RMMOD_FLAG_IGNORE_BUILTIN); |
a872bba2 LDM |
401 | kmod_module_unref(m); |
402 | ||
403 | if (r < 0 && stop_on_errors) | |
404 | return r; | |
405 | } | |
406 | ||
407 | return 0; | |
c3d0a5f2 GSB |
408 | } |
409 | ||
a6b540de | 410 | static int rmmod_do_module(struct kmod_module *mod, int flags) |
c3d0a5f2 GSB |
411 | { |
412 | const char *modname = kmod_module_get_name(mod); | |
a872bba2 LDM |
413 | struct kmod_list *pre = NULL, *post = NULL; |
414 | const char *cmd = NULL; | |
c3d0a5f2 GSB |
415 | int err; |
416 | ||
c3d0a5f2 | 417 | if (!ignore_commands) { |
e793f1ea GSB |
418 | err = kmod_module_get_softdeps(mod, &pre, &post); |
419 | if (err < 0) { | |
420 | WRN("could not get softdeps of '%s': %s\n", | |
8f192210 | 421 | modname, strerror(-err)); |
c3d0a5f2 | 422 | return err; |
e793f1ea GSB |
423 | } |
424 | ||
c3d0a5f2 | 425 | cmd = kmod_module_get_remove_commands(mod); |
c3d0a5f2 GSB |
426 | } |
427 | ||
ea3c8adf LDM |
428 | /* Quick check if module is loaded, otherwise there's nothing to do */ |
429 | if (!cmd && !ignore_loaded) { | |
9bf60d21 LDM |
430 | int state = kmod_module_get_initstate(mod); |
431 | ||
e5e2a683 | 432 | if (state < 0) { |
9bf60d21 LDM |
433 | if (first_time) { |
434 | LOG("Module %s is not in kernel.\n", modname); | |
e4e1e64a | 435 | err = -ENOENT; |
e4e1e64a LDM |
436 | } else { |
437 | err = 0; | |
e4e1e64a | 438 | } |
f758caf5 DR |
439 | goto error; |
440 | } else if (state == KMOD_MODULE_BUILTIN) { | |
a6b540de | 441 | if (flags & RMMOD_FLAG_IGNORE_BUILTIN) { |
52a0ba82 YK |
442 | err = 0; |
443 | } else { | |
444 | LOG("Module %s is builtin.\n", modname); | |
445 | err = -ENOENT; | |
446 | } | |
f758caf5 | 447 | goto error; |
9bf60d21 LDM |
448 | } |
449 | } | |
450 | ||
ea3c8adf | 451 | /* 1. @mod's post-softdeps in reverse order */ |
7089386e | 452 | rmmod_do_modlist(post, false); |
a872bba2 | 453 | |
ea3c8adf | 454 | /* 2. Other modules holding @mod */ |
d29ed6ef | 455 | if (flags & RMMOD_FLAG_REMOVE_HOLDERS) { |
42b32d30 | 456 | struct kmod_list *holders = kmod_module_get_holders(mod); |
a872bba2 | 457 | |
42b32d30 | 458 | err = rmmod_do_modlist(holders, true); |
116e7c7f | 459 | kmod_module_unref_list(holders); |
9bf60d21 | 460 | if (err < 0) |
a872bba2 | 461 | goto error; |
9bf60d21 LDM |
462 | } |
463 | ||
ea3c8adf | 464 | /* 3. @mod itself, but check for refcnt first */ |
2b98ed88 | 465 | if (!cmd && !ignore_loaded && !wait_msec) { |
c3d0a5f2 | 466 | int usage = kmod_module_get_refcnt(mod); |
d8a6c0cc | 467 | |
c3d0a5f2 | 468 | if (usage > 0) { |
d8a6c0cc LDM |
469 | if (!quiet_inuse) |
470 | LOG("Module %s is in use.\n", modname); | |
471 | ||
e793f1ea | 472 | err = -EBUSY; |
e793f1ea GSB |
473 | goto error; |
474 | } | |
475 | } | |
476 | ||
ea3c8adf | 477 | if (!cmd) |
a872bba2 LDM |
478 | err = rmmod_do_remove_module(mod); |
479 | else | |
480 | err = command_do(mod, "remove", cmd, NULL); | |
d8a6c0cc | 481 | |
a872bba2 LDM |
482 | if (err < 0) |
483 | goto error; | |
c9a14448 | 484 | |
ea3c8adf LDM |
485 | /* 4. Other modules that became unused: errors are non-fatal */ |
486 | if (!cmd) { | |
487 | struct kmod_list *deps, *itr; | |
488 | ||
489 | deps = kmod_module_get_dependencies(mod); | |
490 | kmod_list_foreach(itr, deps) { | |
491 | struct kmod_module *dep = kmod_module_get_module(itr); | |
492 | if (kmod_module_get_refcnt(dep) == 0) | |
493 | rmmod_do_remove_module(dep); | |
494 | kmod_module_unref(dep); | |
495 | } | |
496 | kmod_module_unref_list(deps); | |
497 | } | |
498 | ||
499 | /* 5. @mod's pre-softdeps in reverse order: errors are non-fatal */ | |
7089386e | 500 | rmmod_do_modlist(pre, false); |
0e9bd2d1 | 501 | |
e793f1ea GSB |
502 | error: |
503 | kmod_module_unref_list(pre); | |
504 | kmod_module_unref_list(post); | |
a872bba2 | 505 | |
c3d0a5f2 GSB |
506 | return err; |
507 | } | |
508 | ||
569f1609 | 509 | static int rmmod(struct kmod_ctx *ctx, const char *alias) |
c3d0a5f2 GSB |
510 | { |
511 | struct kmod_list *l, *list = NULL; | |
512 | int err; | |
513 | ||
514 | err = kmod_module_new_from_lookup(ctx, alias, &list); | |
e5e2a683 | 515 | if (err < 0) |
c3d0a5f2 | 516 | return err; |
e5e2a683 | 517 | |
f758caf5 | 518 | if (list == NULL) { |
e5e2a683 | 519 | LOG("Module %s not found.\n", alias); |
f758caf5 DR |
520 | err = -ENOENT; |
521 | } | |
c3d0a5f2 GSB |
522 | |
523 | kmod_list_foreach(l, list) { | |
524 | struct kmod_module *mod = kmod_module_get_module(l); | |
d29ed6ef LDM |
525 | int flags = remove_holders ? RMMOD_FLAG_REMOVE_HOLDERS : 0; |
526 | ||
527 | err = rmmod_do_module(mod, flags); | |
c3d0a5f2 GSB |
528 | kmod_module_unref(mod); |
529 | if (err < 0) | |
530 | break; | |
531 | } | |
532 | ||
533 | kmod_module_unref_list(list); | |
534 | return err; | |
535 | } | |
536 | ||
c3d0a5f2 GSB |
537 | static int rmmod_all(struct kmod_ctx *ctx, char **args, int nargs) |
538 | { | |
539 | int i, err = 0; | |
540 | ||
541 | for (i = 0; i < nargs; i++) { | |
542 | int r = rmmod(ctx, args[i]); | |
543 | if (r < 0) | |
544 | err = r; | |
545 | } | |
546 | ||
547 | return err; | |
548 | } | |
549 | ||
2e9dcd74 LDM |
550 | static void print_action(struct kmod_module *m, bool install, |
551 | const char *options) | |
552 | { | |
4744ebce LDM |
553 | const char *path; |
554 | ||
555 | if (install) { | |
2e9dcd74 LDM |
556 | printf("install %s %s\n", kmod_module_get_install_commands(m), |
557 | options); | |
4744ebce LDM |
558 | return; |
559 | } | |
560 | ||
561 | path = kmod_module_get_path(m); | |
562 | ||
563 | if (path == NULL) { | |
ace742fa LDM |
564 | /* |
565 | * Either a builtin module, or an alias, print only for | |
566 | * builtin | |
567 | */ | |
568 | if (kmod_module_get_initstate(m) == KMOD_MODULE_BUILTIN) | |
569 | printf("builtin %s\n", kmod_module_get_name(m)); | |
4744ebce LDM |
570 | } else |
571 | printf("insmod %s %s\n", kmod_module_get_path(m), options); | |
2e9dcd74 LDM |
572 | } |
573 | ||
f3db15e9 GS |
574 | static int insmod_insert(struct kmod_module *mod, int flags, |
575 | const char *extra_options) | |
576 | { | |
577 | int err = 0; | |
578 | void (*show)(struct kmod_module *m, bool install, | |
579 | const char *options) = NULL; | |
580 | ||
581 | if (do_show || verbose > DEFAULT_VERBOSE) | |
582 | show = &print_action; | |
583 | ||
584 | if (lookup_only) | |
585 | printf("%s\n", kmod_module_get_name(mod)); | |
586 | else | |
587 | err = kmod_module_probe_insert_module(mod, flags, | |
588 | extra_options, NULL, NULL, show); | |
589 | ||
590 | if (err >= 0) | |
591 | /* ignore flag return values such as a mod being blacklisted */ | |
592 | err = 0; | |
593 | else { | |
594 | switch (err) { | |
595 | case -EEXIST: | |
596 | ERR("could not insert '%s': Module already in kernel\n", | |
597 | kmod_module_get_name(mod)); | |
598 | break; | |
599 | case -ENOENT: | |
600 | ERR("could not insert '%s': Unknown symbol in module, " | |
601 | "or unknown parameter (see dmesg)\n", | |
602 | kmod_module_get_name(mod)); | |
603 | break; | |
604 | default: | |
605 | ERR("could not insert '%s': %s\n", | |
606 | kmod_module_get_name(mod), | |
607 | strerror(-err)); | |
608 | break; | |
609 | } | |
610 | } | |
611 | ||
612 | return err; | |
613 | } | |
614 | ||
569f1609 | 615 | static int insmod(struct kmod_ctx *ctx, const char *alias, |
8f192210 | 616 | const char *extra_options) |
c3d0a5f2 GSB |
617 | { |
618 | struct kmod_list *l, *list = NULL; | |
883d931d | 619 | struct kmod_module *mod = NULL; |
2e9dcd74 LDM |
620 | int err, flags = 0; |
621 | ||
883d931d GS |
622 | if (strncmp(alias, "/", 1) == 0 || strncmp(alias, "./", 2) == 0) { |
623 | err = kmod_module_new_from_path(ctx, alias, &mod); | |
624 | if (err < 0) { | |
625 | LOG("Failed to get module from path %s: %s\n", alias, | |
626 | strerror(-err)); | |
627 | return -ENOENT; | |
628 | } | |
629 | } else { | |
630 | err = kmod_module_new_from_lookup(ctx, alias, &list); | |
631 | if (list == NULL || err < 0) { | |
632 | LOG("Module %s not found in directory %s\n", alias, | |
633 | ctx ? kmod_get_dirname(ctx) : "(missing)"); | |
634 | return -ENOENT; | |
635 | } | |
e2719b32 | 636 | } |
c3d0a5f2 | 637 | |
2e9dcd74 LDM |
638 | if (strip_modversion || force) |
639 | flags |= KMOD_PROBE_FORCE_MODVERSION; | |
640 | if (strip_vermagic || force) | |
641 | flags |= KMOD_PROBE_FORCE_VERMAGIC; | |
642 | if (ignore_commands) | |
643 | flags |= KMOD_PROBE_IGNORE_COMMAND; | |
644 | if (ignore_loaded) | |
645 | flags |= KMOD_PROBE_IGNORE_LOADED; | |
646 | if (dry_run) | |
647 | flags |= KMOD_PROBE_DRY_RUN; | |
2e9dcd74 | 648 | |
36ddee65 | 649 | flags |= KMOD_PROBE_APPLY_BLACKLIST_ALIAS_ONLY; |
2e9dcd74 LDM |
650 | |
651 | if (use_blacklist) | |
652 | flags |= KMOD_PROBE_APPLY_BLACKLIST; | |
653 | if (first_time) | |
814a57ba | 654 | flags |= KMOD_PROBE_FAIL_ON_LOADED; |
c3d0a5f2 | 655 | |
883d931d GS |
656 | /* If module is loaded from path */ |
657 | if (mod != NULL) { | |
f3db15e9 | 658 | err = insmod_insert(mod, flags, extra_options); |
c3d0a5f2 | 659 | kmod_module_unref(mod); |
883d931d GS |
660 | } else { |
661 | kmod_list_foreach(l, list) { | |
662 | mod = kmod_module_get_module(l); | |
663 | err = insmod_insert(mod, flags, extra_options); | |
664 | kmod_module_unref(mod); | |
665 | } | |
666 | kmod_module_unref_list(list); | |
c3d0a5f2 | 667 | } |
c3d0a5f2 GSB |
668 | return err; |
669 | } | |
670 | ||
c3d0a5f2 GSB |
671 | static int insmod_all(struct kmod_ctx *ctx, char **args, int nargs) |
672 | { | |
673 | int i, err = 0; | |
674 | ||
675 | for (i = 0; i < nargs; i++) { | |
676 | int r = insmod(ctx, args[i], NULL); | |
677 | if (r < 0) | |
678 | err = r; | |
679 | } | |
680 | ||
681 | return err; | |
682 | } | |
683 | ||
684 | static void env_modprobe_options_append(const char *value) | |
685 | { | |
686 | const char *old = getenv("MODPROBE_OPTIONS"); | |
687 | char *env; | |
688 | ||
689 | if (old == NULL) { | |
690 | setenv("MODPROBE_OPTIONS", value, 1); | |
691 | return; | |
692 | } | |
693 | ||
694 | if (asprintf(&env, "%s %s", old, value) < 0) { | |
695 | ERR("could not append value to $MODPROBE_OPTIONS\n"); | |
696 | return; | |
697 | } | |
698 | ||
699 | if (setenv("MODPROBE_OPTIONS", env, 1) < 0) | |
700 | ERR("could not setenv(MODPROBE_OPTIONS, \"%s\")\n", env); | |
701 | free(env); | |
702 | } | |
703 | ||
704 | static int options_from_array(char **args, int nargs, char **output) | |
705 | { | |
706 | char *opts = NULL; | |
707 | size_t optslen = 0; | |
708 | int i, err = 0; | |
709 | ||
710 | for (i = 1; i < nargs; i++) { | |
711 | size_t len = strlen(args[i]); | |
712 | size_t qlen = 0; | |
713 | const char *value; | |
714 | void *tmp; | |
715 | ||
716 | value = strchr(args[i], '='); | |
717 | if (value) { | |
718 | value++; | |
719 | if (*value != '"' && *value != '\'') { | |
720 | if (strchr(value, ' ')) | |
721 | qlen = 2; | |
722 | } | |
723 | } | |
724 | ||
725 | tmp = realloc(opts, optslen + len + qlen + 2); | |
726 | if (!tmp) { | |
727 | err = -errno; | |
728 | free(opts); | |
729 | opts = NULL; | |
730 | ERR("could not gather module options: out-of-memory\n"); | |
731 | break; | |
732 | } | |
733 | opts = tmp; | |
734 | if (optslen > 0) { | |
735 | opts[optslen] = ' '; | |
736 | optslen++; | |
737 | } | |
738 | if (qlen == 0) { | |
739 | memcpy(opts + optslen, args[i], len + 1); | |
740 | optslen += len; | |
741 | } else { | |
742 | size_t keylen = value - args[i]; | |
743 | size_t valuelen = len - keylen; | |
744 | memcpy(opts + optslen, args[i], keylen); | |
745 | optslen += keylen; | |
746 | opts[optslen] = '"'; | |
747 | optslen++; | |
748 | memcpy(opts + optslen, value, valuelen); | |
749 | optslen += valuelen; | |
750 | opts[optslen] = '"'; | |
751 | optslen++; | |
752 | opts[optslen] = '\0'; | |
753 | } | |
754 | } | |
755 | ||
756 | *output = opts; | |
757 | return err; | |
758 | } | |
759 | ||
760 | static char **prepend_options_from_env(int *p_argc, char **orig_argv) | |
761 | { | |
762 | const char *p, *env = getenv("MODPROBE_OPTIONS"); | |
d890179b | 763 | char **new_argv, *str_end, *str, *s, *quote; |
c3d0a5f2 GSB |
764 | int i, argc = *p_argc; |
765 | size_t envlen, space_count = 0; | |
766 | ||
767 | if (env == NULL) | |
768 | return orig_argv; | |
769 | ||
770 | for (p = env; *p != '\0'; p++) { | |
771 | if (*p == ' ') | |
772 | space_count++; | |
773 | } | |
774 | ||
775 | envlen = p - env; | |
776 | new_argv = malloc(sizeof(char *) * (argc + space_count + 3 + envlen)); | |
777 | if (new_argv == NULL) | |
778 | return NULL; | |
779 | ||
780 | new_argv[0] = orig_argv[0]; | |
d890179b | 781 | str = (char *) (new_argv + argc + space_count + 3); |
c3d0a5f2 GSB |
782 | memcpy(str, env, envlen + 1); |
783 | ||
d890179b | 784 | str_end = str + envlen; |
c3d0a5f2 GSB |
785 | |
786 | quote = NULL; | |
787 | for (i = 1, s = str; *s != '\0'; s++) { | |
788 | if (quote == NULL) { | |
789 | if (*s == ' ') { | |
790 | new_argv[i] = str; | |
791 | i++; | |
792 | *s = '\0'; | |
793 | str = s + 1; | |
794 | } else if (*s == '"' || *s == '\'') | |
795 | quote = s; | |
796 | } else { | |
797 | if (*s == *quote) { | |
798 | if (quote == str) { | |
799 | new_argv[i] = str + 1; | |
800 | i++; | |
801 | *s = '\0'; | |
802 | str = s + 1; | |
803 | } else { | |
804 | char *it; | |
805 | for (it = quote; it < s - 1; it++) | |
806 | it[0] = it[1]; | |
807 | for (it = s - 1; it < str_end - 2; it++) | |
808 | it[0] = it[2]; | |
809 | str_end -= 2; | |
810 | *str_end = '\0'; | |
811 | s -= 2; | |
812 | } | |
813 | quote = NULL; | |
814 | } | |
815 | } | |
816 | } | |
817 | if (str < s) { | |
818 | new_argv[i] = str; | |
819 | i++; | |
820 | } | |
821 | ||
822 | memcpy(new_argv + i, orig_argv + 1, sizeof(char *) * (argc - 1)); | |
757b3599 | 823 | new_argv[i + argc - 1] = NULL; |
c3d0a5f2 GSB |
824 | *p_argc = i + argc - 1; |
825 | ||
826 | return new_argv; | |
827 | } | |
828 | ||
fa29c0ee | 829 | static int do_modprobe(int argc, char **orig_argv) |
c3d0a5f2 GSB |
830 | { |
831 | struct kmod_ctx *ctx; | |
832 | char **args = NULL, **argv; | |
cb8d4d3e GSB |
833 | const char **config_paths = NULL; |
834 | int nargs = 0, n_config_paths = 0; | |
c3d0a5f2 GSB |
835 | char dirname_buf[PATH_MAX]; |
836 | const char *dirname = NULL; | |
837 | const char *root = NULL; | |
c3d0a5f2 | 838 | const char *kversion = NULL; |
c3d0a5f2 GSB |
839 | int use_all = 0; |
840 | int do_remove = 0; | |
841 | int do_show_config = 0; | |
842 | int do_show_modversions = 0; | |
3ada8df8 | 843 | int do_show_exports = 0; |
c3d0a5f2 | 844 | int err; |
c1fb98a3 | 845 | struct stat stat_buf; |
c3d0a5f2 GSB |
846 | |
847 | argv = prepend_options_from_env(&argc, orig_argv); | |
848 | if (argv == NULL) { | |
d9a2e155 | 849 | ERR("Could not prepend options from command line\n"); |
c3d0a5f2 GSB |
850 | return EXIT_FAILURE; |
851 | } | |
852 | ||
853 | for (;;) { | |
854 | int c, idx = 0; | |
855 | c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); | |
856 | if (c == -1) | |
857 | break; | |
858 | switch (c) { | |
859 | case 'a': | |
860 | log_priority = LOG_WARNING; | |
861 | use_all = 1; | |
862 | break; | |
863 | case 'r': | |
864 | do_remove = 1; | |
865 | break; | |
866 | case 5: | |
42b32d30 | 867 | remove_holders = 1; |
c3d0a5f2 | 868 | break; |
2b98ed88 LDM |
869 | case 'w': { |
870 | char *endptr = NULL; | |
871 | wait_msec = strtoul(optarg, &endptr, 0); | |
872 | if (!*optarg || *endptr) { | |
873 | ERR("unexpected wait value '%s'.\n", optarg); | |
874 | err = -1; | |
875 | goto done; | |
876 | } | |
877 | break; | |
878 | } | |
c3d0a5f2 GSB |
879 | case 3: |
880 | first_time = 1; | |
881 | break; | |
882 | case 'i': | |
883 | ignore_commands = 1; | |
884 | break; | |
885 | case 'b': | |
886 | use_blacklist = 1; | |
887 | break; | |
888 | case 'f': | |
889 | force = 1; | |
890 | break; | |
891 | case 2: | |
892 | strip_modversion = 1; | |
893 | break; | |
894 | case 1: | |
895 | strip_vermagic = 1; | |
896 | break; | |
c3d0a5f2 GSB |
897 | case 'D': |
898 | ignore_loaded = 1; | |
899 | dry_run = 1; | |
525fa07b | 900 | do_show = 1; |
c3d0a5f2 | 901 | break; |
081fff2c LDM |
902 | case 'R': |
903 | lookup_only = 1; | |
904 | break; | |
c3d0a5f2 GSB |
905 | case 'c': |
906 | do_show_config = 1; | |
907 | break; | |
908 | case 4: | |
909 | do_show_modversions = 1; | |
910 | break; | |
3ada8df8 YK |
911 | case 6: |
912 | do_show_exports = 1; | |
913 | break; | |
c3d0a5f2 GSB |
914 | case 'n': |
915 | dry_run = 1; | |
916 | break; | |
cb8d4d3e GSB |
917 | case 'C': { |
918 | size_t bytes = sizeof(char *) * (n_config_paths + 2); | |
919 | void *tmp = realloc(config_paths, bytes); | |
920 | if (!tmp) { | |
d9a2e155 LDM |
921 | ERR("out-of-memory\n"); |
922 | err = -1; | |
923 | goto done; | |
cb8d4d3e GSB |
924 | } |
925 | config_paths = tmp; | |
926 | config_paths[n_config_paths] = optarg; | |
927 | n_config_paths++; | |
928 | config_paths[n_config_paths] = NULL; | |
929 | ||
c3d0a5f2 GSB |
930 | env_modprobe_options_append("-C"); |
931 | env_modprobe_options_append(optarg); | |
c3d0a5f2 | 932 | break; |
cb8d4d3e | 933 | } |
c3d0a5f2 GSB |
934 | case 'd': |
935 | root = optarg; | |
936 | break; | |
937 | case 'S': | |
938 | kversion = optarg; | |
939 | break; | |
940 | case 's': | |
941 | env_modprobe_options_append("-s"); | |
942 | use_syslog = 1; | |
943 | break; | |
944 | case 'q': | |
945 | env_modprobe_options_append("-q"); | |
ae7ebe87 | 946 | verbose = LOG_EMERG; |
c3d0a5f2 GSB |
947 | break; |
948 | case 'v': | |
949 | env_modprobe_options_append("-v"); | |
950 | verbose++; | |
951 | break; | |
952 | case 'V': | |
953 | puts(PACKAGE " version " VERSION); | |
655de275 | 954 | puts(KMOD_FEATURES); |
d9a2e155 | 955 | err = 0; |
4434d8ba | 956 | goto done; |
c3d0a5f2 | 957 | case 'h': |
4a2e20df | 958 | help(); |
d9a2e155 | 959 | err = 0; |
4434d8ba | 960 | goto done; |
c3d0a5f2 | 961 | case '?': |
d9a2e155 LDM |
962 | err = -1; |
963 | goto done; | |
c3d0a5f2 | 964 | default: |
d9a2e155 LDM |
965 | ERR("unexpected getopt_long() value '%c'.\n", c); |
966 | err = -1; | |
967 | goto done; | |
c3d0a5f2 GSB |
968 | } |
969 | } | |
970 | ||
971 | args = argv + optind; | |
972 | nargs = argc - optind; | |
973 | ||
c1fb98a3 QA |
974 | if (!use_syslog && |
975 | (!stderr || | |
976 | fileno(stderr) == -1 || | |
977 | fstat(fileno(stderr), &stat_buf))) | |
978 | use_syslog = 1; | |
979 | ||
92aad749 | 980 | log_open(use_syslog); |
d9a2e155 | 981 | |
b09668cf | 982 | if (!do_show_config) { |
c3d0a5f2 | 983 | if (nargs == 0) { |
d9a2e155 LDM |
984 | ERR("missing parameters. See -h.\n"); |
985 | err = -1; | |
986 | goto done; | |
c3d0a5f2 GSB |
987 | } |
988 | } | |
989 | ||
c3d0a5f2 GSB |
990 | if (root != NULL || kversion != NULL) { |
991 | struct utsname u; | |
992 | if (root == NULL) | |
993 | root = ""; | |
994 | if (kversion == NULL) { | |
995 | if (uname(&u) < 0) { | |
d9a2e155 LDM |
996 | ERR("uname() failed: %m\n"); |
997 | err = -1; | |
998 | goto done; | |
c3d0a5f2 GSB |
999 | } |
1000 | kversion = u.release; | |
1001 | } | |
8f192210 | 1002 | snprintf(dirname_buf, sizeof(dirname_buf), |
9d1fb317 | 1003 | "%s" MODULE_DIRECTORY "/%s", root, |
8f192210 | 1004 | kversion); |
c3d0a5f2 GSB |
1005 | dirname = dirname_buf; |
1006 | } | |
1007 | ||
cb8d4d3e | 1008 | ctx = kmod_new(dirname, config_paths); |
c3d0a5f2 | 1009 | if (!ctx) { |
d9a2e155 LDM |
1010 | ERR("kmod_new() failed!\n"); |
1011 | err = -1; | |
1012 | goto done; | |
c3d0a5f2 | 1013 | } |
c3d0a5f2 | 1014 | |
52a50fe2 | 1015 | log_setup_kmod_log(ctx, verbose); |
d9a2e155 LDM |
1016 | |
1017 | kmod_load_resources(ctx); | |
c3d0a5f2 | 1018 | |
b09668cf | 1019 | if (do_show_config) |
c3d0a5f2 GSB |
1020 | err = show_config(ctx); |
1021 | else if (do_show_modversions) | |
1022 | err = show_modversions(ctx, args[0]); | |
3ada8df8 YK |
1023 | else if (do_show_exports) |
1024 | err = show_exports(ctx, args[0]); | |
c3d0a5f2 | 1025 | else if (do_remove) |
c1b84540 | 1026 | err = rmmod_all(ctx, args, nargs); |
c3d0a5f2 GSB |
1027 | else if (use_all) |
1028 | err = insmod_all(ctx, args, nargs); | |
1029 | else { | |
1030 | char *opts; | |
1031 | err = options_from_array(args, nargs, &opts); | |
1032 | if (err == 0) { | |
1033 | err = insmod(ctx, args[0], opts); | |
1034 | free(opts); | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | kmod_unref(ctx); | |
1039 | ||
d9a2e155 | 1040 | done: |
92aad749 | 1041 | log_close(); |
c3d0a5f2 GSB |
1042 | |
1043 | if (argv != orig_argv) | |
1044 | free(argv); | |
8f192210 | 1045 | |
cb8d4d3e | 1046 | free(config_paths); |
c3d0a5f2 | 1047 | |
d9a2e155 | 1048 | return err >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; |
c3d0a5f2 | 1049 | } |
fa29c0ee | 1050 | |
fa29c0ee LDM |
1051 | const struct kmod_cmd kmod_cmd_compat_modprobe = { |
1052 | .name = "modprobe", | |
1053 | .cmd = do_modprobe, | |
1054 | .help = "compat modprobe command", | |
1055 | }; |