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