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