modprobe.c revision c010f02030003c64faded49ee277b8903b8feb9f
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 <stdio.h> 22#include <stdlib.h> 23#include <stdbool.h> 24#include <getopt.h> 25#include <errno.h> 26#include <string.h> 27#include <sys/types.h> 28#include <sys/stat.h> 29#include <sys/utsname.h> 30#include <sys/wait.h> 31#include <unistd.h> 32#include <limits.h> 33 34#include "libkmod.h" 35#include "libkmod-array.h" 36#include "macro.h" 37 38#include "kmod.h" 39 40static int log_priority = LOG_CRIT; 41static int use_syslog = 0; 42#define LOG(...) log_printf(log_priority, __VA_ARGS__) 43 44#define DEFAULT_VERBOSE LOG_WARNING 45static int verbose = DEFAULT_VERBOSE; 46static int do_show = 0; 47static int dry_run = 0; 48static int ignore_loaded = 0; 49static int lookup_only = 0; 50static int first_time = 0; 51static int ignore_commands = 0; 52static int use_blacklist = 0; 53static int force = 0; 54static int strip_modversion = 0; 55static int strip_vermagic = 0; 56static int remove_dependencies = 0; 57static int quiet_inuse = 0; 58 59static const char cmdopts_s[] = "arRibfDcnC:d:S:sqvVh"; 60static const struct option cmdopts[] = { 61 {"all", no_argument, 0, 'a'}, 62 {"remove", no_argument, 0, 'r'}, 63 {"remove-dependencies", no_argument, 0, 5}, 64 {"resolve-alias", no_argument, 0, 'R'}, 65 {"first-time", no_argument, 0, 3}, 66 {"ignore-install", no_argument, 0, 'i'}, 67 {"ignore-remove", no_argument, 0, 'i'}, 68 {"use-blacklist", no_argument, 0, 'b'}, 69 {"force", no_argument, 0, 'f'}, 70 {"force-modversion", no_argument, 0, 2}, 71 {"force-vermagic", no_argument, 0, 1}, 72 73 {"show-depends", no_argument, 0, 'D'}, 74 {"showconfig", no_argument, 0, 'c'}, 75 {"show-config", no_argument, 0, 'c'}, 76 {"show-modversions", no_argument, 0, 4}, 77 {"dump-modversions", no_argument, 0, 4}, 78 79 {"dry-run", no_argument, 0, 'n'}, 80 {"show", no_argument, 0, 'n'}, 81 82 {"config", required_argument, 0, 'C'}, 83 {"dirname", required_argument, 0, 'd'}, 84 {"set-version", required_argument, 0, 'S'}, 85 86 {"syslog", no_argument, 0, 's'}, 87 {"quiet", no_argument, 0, 'q'}, 88 {"verbose", no_argument, 0, 'v'}, 89 {"version", no_argument, 0, 'V'}, 90 {"help", no_argument, 0, 'h'}, 91 {NULL, 0, 0, 0} 92}; 93 94static void help(void) 95{ 96 printf("Usage:\n" 97 "\t%s [options] [-i] [-b] modulename\n" 98 "\t%s [options] -a [-i] [-b] modulename [modulename...]\n" 99 "\t%s [options] -r [-i] modulename\n" 100 "\t%s [options] -r -a [-i] modulename [modulename...]\n" 101 "\t%s [options] -c\n" 102 "\t%s [options] --dump-modversions filename\n" 103 "Management Options:\n" 104 "\t-a, --all Consider every non-argument to\n" 105 "\t be a module name to be inserted\n" 106 "\t or removed (-r)\n" 107 "\t-r, --remove Remove modules instead of inserting\n" 108 "\t --remove-dependencies Also remove modules depending on it\n" 109 "\t-R, --resolve-alias Only lookup and print alias and exit\n" 110 "\t --first-time Fail if module already inserted or removed\n" 111 "\t-i, --ignore-install Ignore install commands\n" 112 "\t-i, --ignore-remove Ignore remove commands\n" 113 "\t-b, --use-blacklist Apply blacklist to resolved alias.\n" 114 "\t-f, --force Force module insertion or removal.\n" 115 "\t implies --force-modversions and\n" 116 "\t --force-vermagic\n" 117 "\t --force-modversion Ignore module's version\n" 118 "\t --force-vermagic Ignore module's version magic\n" 119 "\n" 120 "Query Options:\n" 121 "\t-D, --show-depends Only print module dependencies and exit\n" 122 "\t-c, --showconfig Print out known configuration and exit\n" 123 "\t-c, --show-config Same as --showconfig\n" 124 "\t --show-modversions Dump module symbol version and exit\n" 125 "\t --dump-modversions Same as --show-modversions\n" 126 "\n" 127 "General Options:\n" 128 "\t-n, --dry-run Do not execute operations, just print out\n" 129 "\t-n, --show Same as --dry-run\n" 130 131 "\t-C, --config=FILE Use FILE instead of default search paths\n" 132 "\t-d, --dirname=DIR Use DIR as filesystem root for /lib/modules\n" 133 "\t-S, --set-version=VERSION Use VERSION instead of `uname -r`\n" 134 135 "\t-s, --syslog print to syslog, not stderr\n" 136 "\t-q, --quiet disable messages\n" 137 "\t-v, --verbose enables more messages\n" 138 "\t-V, --version show version\n" 139 "\t-h, --help show this help\n", 140 program_invocation_short_name, program_invocation_short_name, 141 program_invocation_short_name, program_invocation_short_name, 142 program_invocation_short_name, program_invocation_short_name); 143} 144 145_printf_format_(1, 2) 146static inline void _show(const char *fmt, ...) 147{ 148 va_list args; 149 150 if (!do_show && verbose <= DEFAULT_VERBOSE) 151 return; 152 153 va_start(args, fmt); 154 vfprintf(stdout, fmt, args); 155 fflush(stdout); 156 va_end(args); 157} 158#define SHOW(...) _show(__VA_ARGS__) 159 160static int show_config(struct kmod_ctx *ctx) 161{ 162 struct config_iterators { 163 const char *name; 164 struct kmod_config_iter *(*get_iter)(const struct kmod_ctx *ctx); 165 } ci[] = { 166 { "blacklist", kmod_config_get_blacklists }, 167 { "install", kmod_config_get_install_commands }, 168 { "remove", kmod_config_get_remove_commands }, 169 { "alias", kmod_config_get_aliases }, 170 { "options", kmod_config_get_options }, 171 { "softdep", kmod_config_get_softdeps }, 172 }; 173 size_t i; 174 175 for (i = 0; i < ARRAY_SIZE(ci); i++) { 176 struct kmod_config_iter *iter = ci[i].get_iter(ctx); 177 178 if (iter == NULL) 179 continue; 180 181 while (kmod_config_iter_next(iter)) { 182 const char *val; 183 184 printf("%s %s", ci[i].name, 185 kmod_config_iter_get_key(iter)); 186 val = kmod_config_iter_get_value(iter); 187 if (val != NULL) { 188 putchar(' '); 189 puts(val); 190 } else 191 putchar('\n'); 192 } 193 194 kmod_config_iter_free_iter(iter); 195 } 196 197 puts("\n# End of configuration files. Dumping indexes now:\n"); 198 fflush(stdout); 199 200 kmod_dump_index(ctx, KMOD_INDEX_MODULES_ALIAS, STDOUT_FILENO); 201 kmod_dump_index(ctx, KMOD_INDEX_MODULES_SYMBOL, STDOUT_FILENO); 202 203 return 0; 204} 205 206static int show_modversions(struct kmod_ctx *ctx, const char *filename) 207{ 208 struct kmod_list *l, *list = NULL; 209 struct kmod_module *mod; 210 int err = kmod_module_new_from_path(ctx, filename, &mod); 211 if (err < 0) { 212 LOG("Module %s not found.\n", filename); 213 return err; 214 } 215 216 err = kmod_module_get_versions(mod, &list); 217 if (err < 0) { 218 LOG("could not get modversions of %s: %s\n", 219 filename, strerror(-err)); 220 kmod_module_unref(mod); 221 return err; 222 } 223 224 kmod_list_foreach(l, list) { 225 const char *symbol = kmod_module_version_get_symbol(l); 226 uint64_t crc = kmod_module_version_get_crc(l); 227 printf("0x%08"PRIx64"\t%s\n", crc, symbol); 228 } 229 kmod_module_versions_free_list(list); 230 kmod_module_unref(mod); 231 return 0; 232} 233 234static int command_do(struct kmod_module *module, const char *type, 235 const char *command, const char *cmdline_opts) 236{ 237 const char *modname = kmod_module_get_name(module); 238 char *p, *cmd = NULL; 239 size_t cmdlen, cmdline_opts_len, varlen; 240 int ret = 0; 241 242 if (cmdline_opts == NULL) 243 cmdline_opts = ""; 244 cmdline_opts_len = strlen(cmdline_opts); 245 246 cmd = strdup(command); 247 if (cmd == NULL) 248 return -ENOMEM; 249 cmdlen = strlen(cmd); 250 varlen = sizeof("$CMDLINE_OPTS") - 1; 251 while ((p = strstr(cmd, "$CMDLINE_OPTS")) != NULL) { 252 size_t prefixlen = p - cmd; 253 size_t suffixlen = cmdlen - prefixlen - varlen; 254 size_t slen = cmdlen - varlen + cmdline_opts_len; 255 char *suffix = p + varlen; 256 char *s = malloc(slen + 1); 257 if (s == NULL) { 258 free(cmd); 259 return -ENOMEM; 260 } 261 memcpy(s, cmd, p - cmd); 262 memcpy(s + prefixlen, cmdline_opts, cmdline_opts_len); 263 memcpy(s + prefixlen + cmdline_opts_len, suffix, suffixlen); 264 s[slen] = '\0'; 265 266 free(cmd); 267 cmd = s; 268 cmdlen = slen; 269 } 270 271 SHOW("%s %s\n", type, cmd); 272 if (dry_run) 273 goto end; 274 275 setenv("MODPROBE_MODULE", modname, 1); 276 ret = system(cmd); 277 unsetenv("MODPROBE_MODULE"); 278 if (ret == -1 || WEXITSTATUS(ret)) { 279 LOG("Error running %s command for %s\n", type, modname); 280 if (ret != -1) 281 ret = -WEXITSTATUS(ret); 282 } 283 284end: 285 free(cmd); 286 return ret; 287} 288 289static int rmmod_do_remove_module(struct kmod_module *mod) 290{ 291 const char *modname = kmod_module_get_name(mod); 292 struct kmod_list *deps, *itr; 293 int flags = 0, err; 294 295 SHOW("rmmod %s\n", kmod_module_get_name(mod)); 296 297 if (dry_run) 298 return 0; 299 300 if (force) 301 flags |= KMOD_REMOVE_FORCE; 302 303 err = kmod_module_remove_module(mod, flags); 304 if (err == -EEXIST) { 305 if (!first_time) 306 err = 0; 307 else 308 LOG("Module %s is not in kernel.\n", modname); 309 } 310 311 deps = kmod_module_get_dependencies(mod); 312 if (deps != NULL) { 313 kmod_list_foreach(itr, deps) { 314 struct kmod_module *dep = kmod_module_get_module(itr); 315 if (kmod_module_get_refcnt(dep) == 0) 316 rmmod_do_remove_module(dep); 317 kmod_module_unref(dep); 318 } 319 kmod_module_unref_list(deps); 320 } 321 322 return err; 323} 324 325static int rmmod_do_module(struct kmod_module *mod, bool do_dependencies); 326 327static int rmmod_do_deps_list(struct kmod_list *list, bool stop_on_errors) 328{ 329 struct kmod_list *l; 330 331 kmod_list_foreach_reverse(l, list) { 332 struct kmod_module *m = kmod_module_get_module(l); 333 int r = rmmod_do_module(m, false); 334 kmod_module_unref(m); 335 336 if (r < 0 && stop_on_errors) 337 return r; 338 } 339 340 return 0; 341} 342 343static int rmmod_do_module(struct kmod_module *mod, bool do_dependencies) 344{ 345 const char *modname = kmod_module_get_name(mod); 346 struct kmod_list *pre = NULL, *post = NULL; 347 const char *cmd = NULL; 348 int err; 349 350 if (!ignore_commands) { 351 err = kmod_module_get_softdeps(mod, &pre, &post); 352 if (err < 0) { 353 WRN("could not get softdeps of '%s': %s\n", 354 modname, strerror(-err)); 355 return err; 356 } 357 358 cmd = kmod_module_get_remove_commands(mod); 359 } 360 361 if (cmd == NULL && !ignore_loaded) { 362 int state = kmod_module_get_initstate(mod); 363 364 if (state < 0) { 365 if (first_time) { 366 LOG("Module %s is not in kernel.\n", modname); 367 err = -ENOENT; 368 } else { 369 err = 0; 370 } 371 goto error; 372 } else if (state == KMOD_MODULE_BUILTIN) { 373 LOG("Module %s is builtin.\n", modname); 374 err = -ENOENT; 375 goto error; 376 } 377 } 378 379 rmmod_do_deps_list(post, false); 380 381 if (do_dependencies && remove_dependencies) { 382 struct kmod_list *deps = kmod_module_get_dependencies(mod); 383 384 err = rmmod_do_deps_list(deps, true); 385 if (err < 0) 386 goto error; 387 } 388 389 if (!ignore_loaded && !cmd) { 390 int usage = kmod_module_get_refcnt(mod); 391 392 if (usage > 0) { 393 if (!quiet_inuse) 394 LOG("Module %s is in use.\n", modname); 395 396 err = -EBUSY; 397 goto error; 398 } 399 } 400 401 if (cmd == NULL) 402 err = rmmod_do_remove_module(mod); 403 else 404 err = command_do(mod, "remove", cmd, NULL); 405 406 if (err < 0) 407 goto error; 408 409 rmmod_do_deps_list(pre, false); 410 411error: 412 kmod_module_unref_list(pre); 413 kmod_module_unref_list(post); 414 415 return err; 416} 417 418static int rmmod(struct kmod_ctx *ctx, const char *alias) 419{ 420 struct kmod_list *l, *list = NULL; 421 int err; 422 423 err = kmod_module_new_from_lookup(ctx, alias, &list); 424 if (err < 0) 425 return err; 426 427 if (list == NULL) { 428 LOG("Module %s not found.\n", alias); 429 err = -ENOENT; 430 } 431 432 kmod_list_foreach(l, list) { 433 struct kmod_module *mod = kmod_module_get_module(l); 434 err = rmmod_do_module(mod, true); 435 kmod_module_unref(mod); 436 if (err < 0) 437 break; 438 } 439 440 kmod_module_unref_list(list); 441 return err; 442} 443 444static int rmmod_all(struct kmod_ctx *ctx, char **args, int nargs) 445{ 446 int i, err = 0; 447 448 for (i = 0; i < nargs; i++) { 449 int r = rmmod(ctx, args[i]); 450 if (r < 0) 451 err = r; 452 } 453 454 return err; 455} 456 457static int handle_failed_lookup(struct kmod_ctx *ctx, const char *alias) 458{ 459 struct kmod_module *mod; 460 int state, err; 461 462 DBG("lookup failed - trying to check if it's builtin\n"); 463 464 err = kmod_module_new_from_name(ctx, alias, &mod); 465 if (err < 0) 466 return err; 467 468 state = kmod_module_get_initstate(mod); 469 kmod_module_unref(mod); 470 471 if (state != KMOD_MODULE_BUILTIN) { 472 LOG("Module %s not found.\n", alias); 473 return -ENOENT; 474 } 475 476 if (first_time) { 477 LOG("Module %s already in kernel (builtin).\n", alias); 478 return -ENOENT; 479 } 480 481 SHOW("builtin %s\n", alias); 482 return 0; 483} 484 485static void print_action(struct kmod_module *m, bool install, 486 const char *options) 487{ 488 const char *path; 489 490 if (install) { 491 printf("install %s %s\n", kmod_module_get_install_commands(m), 492 options); 493 return; 494 } 495 496 path = kmod_module_get_path(m); 497 498 if (path == NULL) { 499 /* 500 * Either a builtin module, or an alias, print only for 501 * builtin 502 */ 503 if (kmod_module_get_initstate(m) == KMOD_MODULE_BUILTIN) 504 printf("builtin %s\n", kmod_module_get_name(m)); 505 } else 506 printf("insmod %s %s\n", kmod_module_get_path(m), options); 507} 508 509static int insmod(struct kmod_ctx *ctx, const char *alias, 510 const char *extra_options) 511{ 512 struct kmod_list *l, *list = NULL; 513 int err, flags = 0; 514 515 void (*show)(struct kmod_module *m, bool install, 516 const char *options) = NULL; 517 518 err = kmod_module_new_from_lookup(ctx, alias, &list); 519 if (err < 0) 520 return err; 521 522 if (list == NULL) 523 return handle_failed_lookup(ctx, alias); 524 525 if (strip_modversion || force) 526 flags |= KMOD_PROBE_FORCE_MODVERSION; 527 if (strip_vermagic || force) 528 flags |= KMOD_PROBE_FORCE_VERMAGIC; 529 if (ignore_commands) 530 flags |= KMOD_PROBE_IGNORE_COMMAND; 531 if (ignore_loaded) 532 flags |= KMOD_PROBE_IGNORE_LOADED; 533 if (dry_run) 534 flags |= KMOD_PROBE_DRY_RUN; 535 if (do_show || verbose > DEFAULT_VERBOSE) 536 show = &print_action; 537 538 flags |= KMOD_PROBE_APPLY_BLACKLIST_ALIAS_ONLY; 539 540 if (use_blacklist) 541 flags |= KMOD_PROBE_APPLY_BLACKLIST; 542 if (first_time) 543 flags |= KMOD_PROBE_FAIL_ON_LOADED; 544 545 kmod_list_foreach(l, list) { 546 struct kmod_module *mod = kmod_module_get_module(l); 547 548 if (lookup_only) 549 printf("%s\n", kmod_module_get_name(mod)); 550 else { 551 err = kmod_module_probe_insert_module(mod, flags, 552 extra_options, NULL, NULL, show); 553 } 554 555 if (err >= 0) 556 /* ignore flag return values such as a mod being blacklisted */ 557 err = 0; 558 else { 559 switch (err) { 560 case -EEXIST: 561 ERR("could not insert '%s': Module already in kernel\n", 562 kmod_module_get_name(mod)); 563 break; 564 case -ENOENT: 565 ERR("could not insert '%s': Unknown symbol in module, " 566 "or unknown parameter (see dmesg)\n", 567 kmod_module_get_name(mod)); 568 break; 569 default: 570 ERR("could not insert '%s': %s\n", 571 kmod_module_get_name(mod), 572 strerror(-err)); 573 break; 574 } 575 } 576 577 kmod_module_unref(mod); 578 } 579 580 kmod_module_unref_list(list); 581 return err; 582} 583 584static int insmod_all(struct kmod_ctx *ctx, char **args, int nargs) 585{ 586 int i, err = 0; 587 588 for (i = 0; i < nargs; i++) { 589 int r = insmod(ctx, args[i], NULL); 590 if (r < 0) 591 err = r; 592 } 593 594 return err; 595} 596 597static void env_modprobe_options_append(const char *value) 598{ 599 const char *old = getenv("MODPROBE_OPTIONS"); 600 char *env; 601 602 if (old == NULL) { 603 setenv("MODPROBE_OPTIONS", value, 1); 604 return; 605 } 606 607 if (asprintf(&env, "%s %s", old, value) < 0) { 608 ERR("could not append value to $MODPROBE_OPTIONS\n"); 609 return; 610 } 611 612 if (setenv("MODPROBE_OPTIONS", env, 1) < 0) 613 ERR("could not setenv(MODPROBE_OPTIONS, \"%s\")\n", env); 614 free(env); 615} 616 617static int options_from_array(char **args, int nargs, char **output) 618{ 619 char *opts = NULL; 620 size_t optslen = 0; 621 int i, err = 0; 622 623 for (i = 1; i < nargs; i++) { 624 size_t len = strlen(args[i]); 625 size_t qlen = 0; 626 const char *value; 627 void *tmp; 628 629 value = strchr(args[i], '='); 630 if (value) { 631 value++; 632 if (*value != '"' && *value != '\'') { 633 if (strchr(value, ' ')) 634 qlen = 2; 635 } 636 } 637 638 tmp = realloc(opts, optslen + len + qlen + 2); 639 if (!tmp) { 640 err = -errno; 641 free(opts); 642 opts = NULL; 643 ERR("could not gather module options: out-of-memory\n"); 644 break; 645 } 646 opts = tmp; 647 if (optslen > 0) { 648 opts[optslen] = ' '; 649 optslen++; 650 } 651 if (qlen == 0) { 652 memcpy(opts + optslen, args[i], len + 1); 653 optslen += len; 654 } else { 655 size_t keylen = value - args[i]; 656 size_t valuelen = len - keylen; 657 memcpy(opts + optslen, args[i], keylen); 658 optslen += keylen; 659 opts[optslen] = '"'; 660 optslen++; 661 memcpy(opts + optslen, value, valuelen); 662 optslen += valuelen; 663 opts[optslen] = '"'; 664 optslen++; 665 opts[optslen] = '\0'; 666 } 667 } 668 669 *output = opts; 670 return err; 671} 672 673static char **prepend_options_from_env(int *p_argc, char **orig_argv) 674{ 675 const char *p, *env = getenv("MODPROBE_OPTIONS"); 676 char **new_argv, *str_start, *str_end, *str, *s, *quote; 677 int i, argc = *p_argc; 678 size_t envlen, space_count = 0; 679 680 if (env == NULL) 681 return orig_argv; 682 683 for (p = env; *p != '\0'; p++) { 684 if (*p == ' ') 685 space_count++; 686 } 687 688 envlen = p - env; 689 new_argv = malloc(sizeof(char *) * (argc + space_count + 3 + envlen)); 690 if (new_argv == NULL) 691 return NULL; 692 693 new_argv[0] = orig_argv[0]; 694 str_start = str = (char *) (new_argv + argc + space_count + 3); 695 memcpy(str, env, envlen + 1); 696 697 str_end = str_start + envlen; 698 699 quote = NULL; 700 for (i = 1, s = str; *s != '\0'; s++) { 701 if (quote == NULL) { 702 if (*s == ' ') { 703 new_argv[i] = str; 704 i++; 705 *s = '\0'; 706 str = s + 1; 707 } else if (*s == '"' || *s == '\'') 708 quote = s; 709 } else { 710 if (*s == *quote) { 711 if (quote == str) { 712 new_argv[i] = str + 1; 713 i++; 714 *s = '\0'; 715 str = s + 1; 716 } else { 717 char *it; 718 for (it = quote; it < s - 1; it++) 719 it[0] = it[1]; 720 for (it = s - 1; it < str_end - 2; it++) 721 it[0] = it[2]; 722 str_end -= 2; 723 *str_end = '\0'; 724 s -= 2; 725 } 726 quote = NULL; 727 } 728 } 729 } 730 if (str < s) { 731 new_argv[i] = str; 732 i++; 733 } 734 735 memcpy(new_argv + i, orig_argv + 1, sizeof(char *) * (argc - 1)); 736 new_argv[i + argc] = NULL; 737 *p_argc = i + argc - 1; 738 739 return new_argv; 740} 741 742static int do_modprobe(int argc, char **orig_argv) 743{ 744 struct kmod_ctx *ctx; 745 char **args = NULL, **argv; 746 const char **config_paths = NULL; 747 int nargs = 0, n_config_paths = 0; 748 char dirname_buf[PATH_MAX]; 749 const char *dirname = NULL; 750 const char *root = NULL; 751 const char *kversion = NULL; 752 int use_all = 0; 753 int do_remove = 0; 754 int do_show_config = 0; 755 int do_show_modversions = 0; 756 int err; 757 758 argv = prepend_options_from_env(&argc, orig_argv); 759 if (argv == NULL) { 760 ERR("Could not prepend options from command line\n"); 761 return EXIT_FAILURE; 762 } 763 764 for (;;) { 765 int c, idx = 0; 766 c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); 767 if (c == -1) 768 break; 769 switch (c) { 770 case 'a': 771 log_priority = LOG_WARNING; 772 use_all = 1; 773 break; 774 case 'r': 775 do_remove = 1; 776 break; 777 case 5: 778 remove_dependencies = 1; 779 break; 780 case 'R': 781 lookup_only = 1; 782 break; 783 case 3: 784 first_time = 1; 785 break; 786 case 'i': 787 ignore_commands = 1; 788 break; 789 case 'b': 790 use_blacklist = 1; 791 break; 792 case 'f': 793 force = 1; 794 break; 795 case 2: 796 strip_modversion = 1; 797 break; 798 case 1: 799 strip_vermagic = 1; 800 break; 801 case 'D': 802 ignore_loaded = 1; 803 dry_run = 1; 804 do_show = 1; 805 break; 806 case 'c': 807 do_show_config = 1; 808 break; 809 case 4: 810 do_show_modversions = 1; 811 break; 812 case 'n': 813 dry_run = 1; 814 break; 815 case 'C': { 816 size_t bytes = sizeof(char *) * (n_config_paths + 2); 817 void *tmp = realloc(config_paths, bytes); 818 if (!tmp) { 819 ERR("out-of-memory\n"); 820 err = -1; 821 goto done; 822 } 823 config_paths = tmp; 824 config_paths[n_config_paths] = optarg; 825 n_config_paths++; 826 config_paths[n_config_paths] = NULL; 827 828 env_modprobe_options_append("-C"); 829 env_modprobe_options_append(optarg); 830 break; 831 } 832 case 'd': 833 root = optarg; 834 break; 835 case 'S': 836 kversion = optarg; 837 break; 838 case 's': 839 env_modprobe_options_append("-s"); 840 use_syslog = 1; 841 break; 842 case 'q': 843 env_modprobe_options_append("-q"); 844 verbose = LOG_EMERG; 845 break; 846 case 'v': 847 env_modprobe_options_append("-v"); 848 verbose++; 849 break; 850 case 'V': 851 puts(PACKAGE " version " VERSION); 852 err = 0; 853 goto done; 854 case 'h': 855 help(); 856 err = 0; 857 goto done; 858 case '?': 859 err = -1; 860 goto done; 861 default: 862 ERR("unexpected getopt_long() value '%c'.\n", c); 863 err = -1; 864 goto done; 865 } 866 } 867 868 args = argv + optind; 869 nargs = argc - optind; 870 871 log_open(use_syslog); 872 873 if (!do_show_config) { 874 if (nargs == 0) { 875 ERR("missing parameters. See -h.\n"); 876 err = -1; 877 goto done; 878 } 879 } 880 881 if (root != NULL || kversion != NULL) { 882 struct utsname u; 883 if (root == NULL) 884 root = ""; 885 if (kversion == NULL) { 886 if (uname(&u) < 0) { 887 ERR("uname() failed: %m\n"); 888 err = -1; 889 goto done; 890 } 891 kversion = u.release; 892 } 893 snprintf(dirname_buf, sizeof(dirname_buf), 894 "%s/lib/modules/%s", root, 895 kversion); 896 dirname = dirname_buf; 897 } 898 899 ctx = kmod_new(dirname, config_paths); 900 if (!ctx) { 901 ERR("kmod_new() failed!\n"); 902 err = -1; 903 goto done; 904 } 905 906 log_setup_kmod_log(ctx, verbose); 907 908 kmod_load_resources(ctx); 909 910 if (do_show_config) 911 err = show_config(ctx); 912 else if (do_show_modversions) 913 err = show_modversions(ctx, args[0]); 914 else if (do_remove) 915 err = rmmod_all(ctx, args, nargs); 916 else if (use_all) 917 err = insmod_all(ctx, args, nargs); 918 else { 919 char *opts; 920 err = options_from_array(args, nargs, &opts); 921 if (err == 0) { 922 err = insmod(ctx, args[0], opts); 923 free(opts); 924 } 925 } 926 927 kmod_unref(ctx); 928 929done: 930 log_close(); 931 932 if (argv != orig_argv) 933 free(argv); 934 935 free(config_paths); 936 937 return err >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; 938} 939 940const struct kmod_cmd kmod_cmd_compat_modprobe = { 941 .name = "modprobe", 942 .cmd = do_modprobe, 943 .help = "compat modprobe command", 944}; 945