modprobe.c revision 84341fbe013bca49038174b03e95c2943a8e184c
1/* 2 * kmod-modprobe - manage linux kernel modules using libkmod. 3 * 4 * Copyright (C) 2011-2012 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 <syslog.h> 33#include <limits.h> 34 35#include "libkmod.h" 36#include "libkmod-array.h" 37#include "macro.h" 38 39#include "kmod.h" 40 41static int log_priority = LOG_CRIT; 42static int use_syslog = 0; 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 fprintf(stderr, 97 "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 binname, binname, binname, binname, binname, binname); 142} 143 144static inline void _show(const char *fmt, ...) 145{ 146 va_list args; 147 148 if (!do_show && verbose <= DEFAULT_VERBOSE) 149 return; 150 151 va_start(args, fmt); 152 vfprintf(stdout, fmt, args); 153 fflush(stdout); 154 va_end(args); 155} 156 157static void log_modprobe(void *data, int priority, const char *file, int line, 158 const char *fn, const char *format, va_list args) 159{ 160 const char *prioname = prio_to_str(priority); 161 char *str; 162 163 if (vasprintf(&str, format, args) < 0) 164 return; 165 166 if (use_syslog > 1) { 167#ifdef ENABLE_DEBUG 168 syslog(priority, "%s: %s:%d %s() %s", prioname, file, line, 169 fn, str); 170#else 171 syslog(priority, "%s: %s", prioname, str); 172#endif 173 } else { 174#ifdef ENABLE_DEBUG 175 fprintf(stderr, "modprobe: %s: %s:%d %s() %s", prioname, file, 176 line, fn, str); 177#else 178 fprintf(stderr, "modprobe: %s: %s", prioname, str); 179#endif 180 } 181 182 free(str); 183 (void)data; 184} 185 186static void _log(int prio, const char *fmt, ...) 187{ 188 const char *prioname; 189 char *msg; 190 va_list args; 191 192 if (prio > verbose) 193 return; 194 195 va_start(args, fmt); 196 if (vasprintf(&msg, fmt, args) < 0) 197 msg = NULL; 198 va_end(args); 199 if (msg == NULL) 200 return; 201 202 prioname = prio_to_str(prio); 203 204 if (use_syslog > 1) 205 syslog(prio, "%s: %s", prioname, msg); 206 else 207 fprintf(stderr, "modprobe: %s: %s", prioname, msg); 208 free(msg); 209 210 if (prio <= LOG_CRIT) 211 exit(EXIT_FAILURE); 212} 213#define ERR(...) _log(LOG_ERR, __VA_ARGS__) 214#define WRN(...) _log(LOG_WARNING, __VA_ARGS__) 215#define INF(...) _log(LOG_INFO, __VA_ARGS__) 216#define DBG(...) _log(LOG_DEBUG, __VA_ARGS__) 217#define LOG(...) _log(log_priority, __VA_ARGS__) 218#define SHOW(...) _show(__VA_ARGS__) 219 220static int show_config(struct kmod_ctx *ctx) 221{ 222 struct config_iterators { 223 const char *name; 224 struct kmod_config_iter *(*get_iter)(const struct kmod_ctx *ctx); 225 } ci[] = { 226 { "blacklist", kmod_config_get_blacklists }, 227 { "install", kmod_config_get_install_commands }, 228 { "remove", kmod_config_get_remove_commands }, 229 { "alias", kmod_config_get_aliases }, 230 { "options", kmod_config_get_options }, 231 { "softdep", kmod_config_get_softdeps }, 232 }; 233 size_t i; 234 235 for (i = 0; i < ARRAY_SIZE(ci); i++) { 236 struct kmod_config_iter *iter = ci[i].get_iter(ctx); 237 238 if (iter == NULL) 239 continue; 240 241 while (kmod_config_iter_next(iter)) { 242 const char *val; 243 244 printf("%s %s", ci[i].name, 245 kmod_config_iter_get_key(iter)); 246 val = kmod_config_iter_get_value(iter); 247 if (val != NULL) { 248 putchar(' '); 249 puts(val); 250 } else 251 putchar('\n'); 252 } 253 254 kmod_config_iter_free_iter(iter); 255 } 256 257 puts("\n# End of configuration files. Dumping indexes now:\n"); 258 fflush(stdout); 259 260 kmod_dump_index(ctx, KMOD_INDEX_MODULES_ALIAS, STDOUT_FILENO); 261 kmod_dump_index(ctx, KMOD_INDEX_MODULES_SYMBOL, STDOUT_FILENO); 262 263 return 0; 264} 265 266static int show_modversions(struct kmod_ctx *ctx, const char *filename) 267{ 268 struct kmod_list *l, *list = NULL; 269 struct kmod_module *mod; 270 int err = kmod_module_new_from_path(ctx, filename, &mod); 271 if (err < 0) { 272 LOG("Module %s not found.\n", filename); 273 return err; 274 } 275 276 err = kmod_module_get_versions(mod, &list); 277 if (err < 0) { 278 LOG("could not get modversions of %s: %s\n", 279 filename, strerror(-err)); 280 kmod_module_unref(mod); 281 return err; 282 } 283 284 kmod_list_foreach(l, list) { 285 const char *symbol = kmod_module_version_get_symbol(l); 286 uint64_t crc = kmod_module_version_get_crc(l); 287 printf("0x%08"PRIx64"\t%s\n", crc, symbol); 288 } 289 kmod_module_versions_free_list(list); 290 kmod_module_unref(mod); 291 return 0; 292} 293 294static int command_do(struct kmod_module *module, const char *type, 295 const char *command, const char *cmdline_opts) 296{ 297 const char *modname = kmod_module_get_name(module); 298 char *p, *cmd = NULL; 299 size_t cmdlen, cmdline_opts_len, varlen; 300 int ret = 0; 301 302 if (cmdline_opts == NULL) 303 cmdline_opts = ""; 304 cmdline_opts_len = strlen(cmdline_opts); 305 306 cmd = strdup(command); 307 if (cmd == NULL) 308 return -ENOMEM; 309 cmdlen = strlen(cmd); 310 varlen = sizeof("$CMDLINE_OPTS") - 1; 311 while ((p = strstr(cmd, "$CMDLINE_OPTS")) != NULL) { 312 size_t prefixlen = p - cmd; 313 size_t suffixlen = cmdlen - prefixlen - varlen; 314 size_t slen = cmdlen - varlen + cmdline_opts_len; 315 char *suffix = p + varlen; 316 char *s = malloc(slen + 1); 317 if (s == NULL) { 318 free(cmd); 319 return -ENOMEM; 320 } 321 memcpy(s, cmd, p - cmd); 322 memcpy(s + prefixlen, cmdline_opts, cmdline_opts_len); 323 memcpy(s + prefixlen + cmdline_opts_len, suffix, suffixlen); 324 s[slen] = '\0'; 325 326 free(cmd); 327 cmd = s; 328 cmdlen = slen; 329 } 330 331 SHOW("%s %s\n", type, cmd); 332 if (dry_run) 333 goto end; 334 335 setenv("MODPROBE_MODULE", modname, 1); 336 ret = system(cmd); 337 unsetenv("MODPROBE_MODULE"); 338 if (ret == -1 || WEXITSTATUS(ret)) { 339 LOG("Error running %s command for %s\n", type, modname); 340 if (ret != -1) 341 ret = -WEXITSTATUS(ret); 342 } 343 344end: 345 free(cmd); 346 return ret; 347} 348 349static int rmmod_do_remove_module(struct kmod_module *mod) 350{ 351 const char *modname = kmod_module_get_name(mod); 352 struct kmod_list *deps, *itr; 353 int flags = 0, err; 354 355 SHOW("rmmod %s\n", kmod_module_get_name(mod)); 356 357 if (dry_run) 358 return 0; 359 360 if (force) 361 flags |= KMOD_REMOVE_FORCE; 362 363 err = kmod_module_remove_module(mod, flags); 364 if (err == -EEXIST) { 365 if (!first_time) 366 err = 0; 367 else 368 LOG("Module %s is not in kernel.\n", modname); 369 } 370 371 deps = kmod_module_get_dependencies(mod); 372 if (deps != NULL) { 373 kmod_list_foreach(itr, deps) { 374 struct kmod_module *dep = kmod_module_get_module(itr); 375 if (kmod_module_get_refcnt(dep) == 0) 376 rmmod_do_remove_module(dep); 377 kmod_module_unref(dep); 378 } 379 kmod_module_unref_list(deps); 380 } 381 382 return err; 383} 384 385static int rmmod_do_module(struct kmod_module *mod, bool do_dependencies); 386 387static int rmmod_do_deps_list(struct kmod_list *list, bool stop_on_errors) 388{ 389 struct kmod_list *l; 390 391 kmod_list_foreach_reverse(l, list) { 392 struct kmod_module *m = kmod_module_get_module(l); 393 int r = rmmod_do_module(m, false); 394 kmod_module_unref(m); 395 396 if (r < 0 && stop_on_errors) 397 return r; 398 } 399 400 return 0; 401} 402 403static int rmmod_do_module(struct kmod_module *mod, bool do_dependencies) 404{ 405 const char *modname = kmod_module_get_name(mod); 406 struct kmod_list *pre = NULL, *post = NULL; 407 const char *cmd = NULL; 408 int err; 409 410 if (!ignore_commands) { 411 err = kmod_module_get_softdeps(mod, &pre, &post); 412 if (err < 0) { 413 WRN("could not get softdeps of '%s': %s\n", 414 modname, strerror(-err)); 415 return err; 416 } 417 418 cmd = kmod_module_get_remove_commands(mod); 419 } 420 421 if (cmd == NULL && !ignore_loaded) { 422 int state = kmod_module_get_initstate(mod); 423 424 if (state < 0) { 425 if (first_time) { 426 LOG("Module %s is not in kernel.\n", modname); 427 err = -ENOENT; 428 } else { 429 err = 0; 430 } 431 goto error; 432 } else if (state == KMOD_MODULE_BUILTIN) { 433 LOG("Module %s is builtin.\n", modname); 434 err = -ENOENT; 435 goto error; 436 } 437 } 438 439 rmmod_do_deps_list(post, false); 440 441 if (do_dependencies && remove_dependencies) { 442 struct kmod_list *deps = kmod_module_get_dependencies(mod); 443 444 err = rmmod_do_deps_list(deps, true); 445 if (err < 0) 446 goto error; 447 } 448 449 if (!ignore_loaded) { 450 int usage = kmod_module_get_refcnt(mod); 451 452 if (usage > 0) { 453 if (!quiet_inuse) 454 LOG("Module %s is in use.\n", modname); 455 456 err = -EBUSY; 457 goto error; 458 } 459 } 460 461 if (cmd == NULL) 462 err = rmmod_do_remove_module(mod); 463 else 464 err = command_do(mod, "remove", cmd, NULL); 465 466 if (err < 0) 467 goto error; 468 469 rmmod_do_deps_list(pre, false); 470 471error: 472 kmod_module_unref_list(pre); 473 kmod_module_unref_list(post); 474 475 return err; 476} 477 478static int rmmod(struct kmod_ctx *ctx, const char *alias) 479{ 480 struct kmod_list *l, *list = NULL; 481 int err; 482 483 err = kmod_module_new_from_lookup(ctx, alias, &list); 484 if (err < 0) 485 return err; 486 487 if (list == NULL) { 488 LOG("Module %s not found.\n", alias); 489 err = -ENOENT; 490 } 491 492 kmod_list_foreach(l, list) { 493 struct kmod_module *mod = kmod_module_get_module(l); 494 err = rmmod_do_module(mod, true); 495 kmod_module_unref(mod); 496 if (err < 0) 497 break; 498 } 499 500 kmod_module_unref_list(list); 501 return err; 502} 503 504static int rmmod_all(struct kmod_ctx *ctx, char **args, int nargs) 505{ 506 int i, err = 0; 507 508 for (i = 0; i < nargs; i++) { 509 int r = rmmod(ctx, args[i]); 510 if (r < 0) 511 err = r; 512 } 513 514 return err; 515} 516 517static int handle_failed_lookup(struct kmod_ctx *ctx, const char *alias) 518{ 519 struct kmod_module *mod; 520 int state, err; 521 522 DBG("lookup failed - trying to check if it's builtin\n"); 523 524 err = kmod_module_new_from_name(ctx, alias, &mod); 525 if (err < 0) 526 return err; 527 528 state = kmod_module_get_initstate(mod); 529 kmod_module_unref(mod); 530 531 if (state != KMOD_MODULE_BUILTIN) { 532 LOG("Module %s not found.\n", alias); 533 return -ENOENT; 534 } 535 536 if (first_time) { 537 LOG("Module %s already in kernel (builtin).\n", alias); 538 return -ENOENT; 539 } 540 541 SHOW("builtin %s\n", alias); 542 return 0; 543} 544 545static void print_action(struct kmod_module *m, bool install, 546 const char *options) 547{ 548 const char *path; 549 550 if (install) { 551 printf("install %s %s\n", kmod_module_get_install_commands(m), 552 options); 553 return; 554 } 555 556 path = kmod_module_get_path(m); 557 558 if (path == NULL) { 559 assert(kmod_module_get_initstate(m) == KMOD_MODULE_BUILTIN); 560 printf("builtin %s\n", kmod_module_get_name(m)); 561 } else 562 printf("insmod %s %s\n", kmod_module_get_path(m), options); 563} 564 565static int insmod(struct kmod_ctx *ctx, const char *alias, 566 const char *extra_options) 567{ 568 struct kmod_list *l, *list = NULL; 569 int err, flags = 0; 570 571 void (*show)(struct kmod_module *m, bool install, 572 const char *options) = NULL; 573 574 err = kmod_module_new_from_lookup(ctx, alias, &list); 575 if (err < 0) 576 return err; 577 578 if (list == NULL) 579 return handle_failed_lookup(ctx, alias); 580 581 if (strip_modversion || force) 582 flags |= KMOD_PROBE_FORCE_MODVERSION; 583 if (strip_vermagic || force) 584 flags |= KMOD_PROBE_FORCE_VERMAGIC; 585 if (ignore_commands) 586 flags |= KMOD_PROBE_IGNORE_COMMAND; 587 if (ignore_loaded) 588 flags |= KMOD_PROBE_IGNORE_LOADED; 589 if (dry_run) 590 flags |= KMOD_PROBE_DRY_RUN; 591 if (do_show || verbose > DEFAULT_VERBOSE) 592 show = &print_action; 593 594 flags |= KMOD_PROBE_APPLY_BLACKLIST_ALIAS_ONLY; 595 596 if (use_blacklist) 597 flags |= KMOD_PROBE_APPLY_BLACKLIST; 598 if (first_time) 599 flags |= KMOD_PROBE_FAIL_ON_LOADED; 600 601 kmod_list_foreach(l, list) { 602 struct kmod_module *mod = kmod_module_get_module(l); 603 604 if (lookup_only) 605 printf("%s\n", kmod_module_get_name(mod)); 606 else { 607 err = kmod_module_probe_insert_module(mod, flags, 608 extra_options, NULL, NULL, show); 609 } 610 611 if (err >= 0) 612 /* ignore flag return values such as a mod being blacklisted */ 613 err = 0; 614 else { 615 switch (err) { 616 case -EEXIST: 617 ERR("could not insert '%s': Module already in kernel\n", 618 kmod_module_get_name(mod)); 619 break; 620 case -ENOENT: 621 ERR("could not insert '%s': Unknown symbol in module, " 622 "or unknown parameter (see dmesg)\n", 623 kmod_module_get_name(mod)); 624 break; 625 default: 626 ERR("could not insert '%s': %s\n", 627 kmod_module_get_name(mod), 628 strerror(-err)); 629 break; 630 } 631 } 632 633 kmod_module_unref(mod); 634 } 635 636 kmod_module_unref_list(list); 637 return err; 638} 639 640static int insmod_all(struct kmod_ctx *ctx, char **args, int nargs) 641{ 642 int i, err = 0; 643 644 for (i = 0; i < nargs; i++) { 645 int r = insmod(ctx, args[i], NULL); 646 if (r < 0) 647 err = r; 648 } 649 650 return err; 651} 652 653static void env_modprobe_options_append(const char *value) 654{ 655 const char *old = getenv("MODPROBE_OPTIONS"); 656 char *env; 657 658 if (old == NULL) { 659 setenv("MODPROBE_OPTIONS", value, 1); 660 return; 661 } 662 663 if (asprintf(&env, "%s %s", old, value) < 0) { 664 ERR("could not append value to $MODPROBE_OPTIONS\n"); 665 return; 666 } 667 668 if (setenv("MODPROBE_OPTIONS", env, 1) < 0) 669 ERR("could not setenv(MODPROBE_OPTIONS, \"%s\")\n", env); 670 free(env); 671} 672 673static int options_from_array(char **args, int nargs, char **output) 674{ 675 char *opts = NULL; 676 size_t optslen = 0; 677 int i, err = 0; 678 679 for (i = 1; i < nargs; i++) { 680 size_t len = strlen(args[i]); 681 size_t qlen = 0; 682 const char *value; 683 void *tmp; 684 685 value = strchr(args[i], '='); 686 if (value) { 687 value++; 688 if (*value != '"' && *value != '\'') { 689 if (strchr(value, ' ')) 690 qlen = 2; 691 } 692 } 693 694 tmp = realloc(opts, optslen + len + qlen + 2); 695 if (!tmp) { 696 err = -errno; 697 free(opts); 698 opts = NULL; 699 ERR("could not gather module options: out-of-memory\n"); 700 break; 701 } 702 opts = tmp; 703 if (optslen > 0) { 704 opts[optslen] = ' '; 705 optslen++; 706 } 707 if (qlen == 0) { 708 memcpy(opts + optslen, args[i], len + 1); 709 optslen += len; 710 } else { 711 size_t keylen = value - args[i]; 712 size_t valuelen = len - keylen; 713 memcpy(opts + optslen, args[i], keylen); 714 optslen += keylen; 715 opts[optslen] = '"'; 716 optslen++; 717 memcpy(opts + optslen, value, valuelen); 718 optslen += valuelen; 719 opts[optslen] = '"'; 720 optslen++; 721 opts[optslen] = '\0'; 722 } 723 } 724 725 *output = opts; 726 return err; 727} 728 729static char **prepend_options_from_env(int *p_argc, char **orig_argv) 730{ 731 const char *p, *env = getenv("MODPROBE_OPTIONS"); 732 char **new_argv, *str_start, *str_end, *str, *s, *quote; 733 int i, argc = *p_argc; 734 size_t envlen, space_count = 0; 735 736 if (env == NULL) 737 return orig_argv; 738 739 for (p = env; *p != '\0'; p++) { 740 if (*p == ' ') 741 space_count++; 742 } 743 744 envlen = p - env; 745 new_argv = malloc(sizeof(char *) * (argc + space_count + 3 + envlen)); 746 if (new_argv == NULL) 747 return NULL; 748 749 new_argv[0] = orig_argv[0]; 750 str_start = str = (char *) (new_argv + argc + space_count + 3); 751 memcpy(str, env, envlen + 1); 752 753 str_end = str_start + envlen; 754 755 quote = NULL; 756 for (i = 1, s = str; *s != '\0'; s++) { 757 if (quote == NULL) { 758 if (*s == ' ') { 759 new_argv[i] = str; 760 i++; 761 *s = '\0'; 762 str = s + 1; 763 } else if (*s == '"' || *s == '\'') 764 quote = s; 765 } else { 766 if (*s == *quote) { 767 if (quote == str) { 768 new_argv[i] = str + 1; 769 i++; 770 *s = '\0'; 771 str = s + 1; 772 } else { 773 char *it; 774 for (it = quote; it < s - 1; it++) 775 it[0] = it[1]; 776 for (it = s - 1; it < str_end - 2; it++) 777 it[0] = it[2]; 778 str_end -= 2; 779 *str_end = '\0'; 780 s -= 2; 781 } 782 quote = NULL; 783 } 784 } 785 } 786 if (str < s) { 787 new_argv[i] = str; 788 i++; 789 } 790 791 memcpy(new_argv + i, orig_argv + 1, sizeof(char *) * (argc - 1)); 792 new_argv[i + argc] = NULL; 793 *p_argc = i + argc - 1; 794 795 return new_argv; 796} 797 798static int do_modprobe(int argc, char **orig_argv) 799{ 800 struct kmod_ctx *ctx; 801 char **args = NULL, **argv; 802 const char **config_paths = NULL; 803 int nargs = 0, n_config_paths = 0; 804 char dirname_buf[PATH_MAX]; 805 const char *dirname = NULL; 806 const char *root = NULL; 807 const char *kversion = NULL; 808 int use_all = 0; 809 int do_remove = 0; 810 int do_show_config = 0; 811 int do_show_modversions = 0; 812 int err; 813 814 argv = prepend_options_from_env(&argc, orig_argv); 815 if (argv == NULL) { 816 ERR("Could not prepend options from command line\n"); 817 return EXIT_FAILURE; 818 } 819 820 for (;;) { 821 int c, idx = 0; 822 c = getopt_long(argc, argv, cmdopts_s, cmdopts, &idx); 823 if (c == -1) 824 break; 825 switch (c) { 826 case 'a': 827 log_priority = LOG_WARNING; 828 use_all = 1; 829 break; 830 case 'r': 831 do_remove = 1; 832 break; 833 case 5: 834 remove_dependencies = 1; 835 break; 836 case 'R': 837 lookup_only = 1; 838 break; 839 case 3: 840 first_time = 1; 841 break; 842 case 'i': 843 ignore_commands = 1; 844 break; 845 case 'b': 846 use_blacklist = 1; 847 break; 848 case 'f': 849 force = 1; 850 break; 851 case 2: 852 strip_modversion = 1; 853 break; 854 case 1: 855 strip_vermagic = 1; 856 break; 857 case 'D': 858 ignore_loaded = 1; 859 dry_run = 1; 860 do_show = 1; 861 break; 862 case 'c': 863 do_show_config = 1; 864 break; 865 case 4: 866 do_show_modversions = 1; 867 break; 868 case 'n': 869 dry_run = 1; 870 break; 871 case 'C': { 872 size_t bytes = sizeof(char *) * (n_config_paths + 2); 873 void *tmp = realloc(config_paths, bytes); 874 if (!tmp) { 875 ERR("out-of-memory\n"); 876 err = -1; 877 goto done; 878 } 879 config_paths = tmp; 880 config_paths[n_config_paths] = optarg; 881 n_config_paths++; 882 config_paths[n_config_paths] = NULL; 883 884 env_modprobe_options_append("-C"); 885 env_modprobe_options_append(optarg); 886 break; 887 } 888 case 'd': 889 root = optarg; 890 break; 891 case 'S': 892 kversion = optarg; 893 break; 894 case 's': 895 env_modprobe_options_append("-s"); 896 use_syslog = 1; 897 break; 898 case 'q': 899 env_modprobe_options_append("-q"); 900 verbose = LOG_EMERG; 901 break; 902 case 'v': 903 env_modprobe_options_append("-v"); 904 verbose++; 905 break; 906 case 'V': 907 puts(PACKAGE " version " VERSION); 908 err = 0; 909 goto done; 910 case 'h': 911 help(); 912 err = 0; 913 goto done; 914 case '?': 915 err = -1; 916 goto done; 917 default: 918 ERR("unexpected getopt_long() value '%c'.\n", c); 919 err = -1; 920 goto done; 921 } 922 } 923 924 args = argv + optind; 925 nargs = argc - optind; 926 927 if (use_syslog) { 928 openlog("modprobe", LOG_CONS, LOG_DAEMON); 929 use_syslog++; 930 } 931 932 if (!do_show_config) { 933 if (nargs == 0) { 934 ERR("missing parameters. See -h.\n"); 935 err = -1; 936 goto done; 937 } 938 } 939 940 if (root != NULL || kversion != NULL) { 941 struct utsname u; 942 if (root == NULL) 943 root = ""; 944 if (kversion == NULL) { 945 if (uname(&u) < 0) { 946 ERR("uname() failed: %m\n"); 947 err = -1; 948 goto done; 949 } 950 kversion = u.release; 951 } 952 snprintf(dirname_buf, sizeof(dirname_buf), 953 "%s/lib/modules/%s", root, 954 kversion); 955 dirname = dirname_buf; 956 } 957 958 ctx = kmod_new(dirname, config_paths); 959 if (!ctx) { 960 ERR("kmod_new() failed!\n"); 961 err = -1; 962 goto done; 963 } 964 965 kmod_set_log_priority(ctx, verbose); 966 kmod_set_log_fn(ctx, log_modprobe, NULL); 967 968 kmod_load_resources(ctx); 969 970 if (do_show_config) 971 err = show_config(ctx); 972 else if (do_show_modversions) 973 err = show_modversions(ctx, args[0]); 974 else if (do_remove) 975 err = rmmod_all(ctx, args, nargs); 976 else if (use_all) 977 err = insmod_all(ctx, args, nargs); 978 else { 979 char *opts; 980 err = options_from_array(args, nargs, &opts); 981 if (err == 0) { 982 err = insmod(ctx, args[0], opts); 983 free(opts); 984 } 985 } 986 987 kmod_unref(ctx); 988 989done: 990 if (use_syslog > 1) 991 closelog(); 992 993 if (argv != orig_argv) 994 free(argv); 995 996 free(config_paths); 997 998 return err >= 0 ? EXIT_SUCCESS : EXIT_FAILURE; 999} 1000 1001const struct kmod_cmd kmod_cmd_compat_modprobe = { 1002 .name = "modprobe", 1003 .cmd = do_modprobe, 1004 .help = "compat modprobe command", 1005}; 1006