1 /*- 2 * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/linker.h> 32 #include <sys/module.h> 33 #include <sys/stat.h> 34 #include <sys/sysctl.h> 35 #include <ctype.h> 36 #include <err.h> 37 #include <errno.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <stdarg.h> 41 #include <stdint.h> 42 #include <string.h> 43 #include <unistd.h> 44 #include <libgen.h> 45 #include <libutil.h> 46 #include <inttypes.h> 47 #include <dlfcn.h> 48 #include <assert.h> 49 #include <libgeom.h> 50 #include <geom.h> 51 52 #include "misc/subr.h" 53 54 55 static char comm[MAXPATHLEN], *class_name = NULL, *gclass_name = NULL; 56 static uint32_t *version = NULL; 57 static int verbose = 0; 58 static struct g_command *class_commands = NULL; 59 static void (*usage)(const char *name); 60 61 static struct g_command *find_command(const char *cmdstr, int all); 62 static int std_available(const char *name); 63 64 static void std_help(struct gctl_req *req, unsigned flags); 65 static void std_list(struct gctl_req *req, unsigned flags); 66 static void std_load(struct gctl_req *req, unsigned flags); 67 static void std_unload(struct gctl_req *req, unsigned flags); 68 69 struct g_command std_commands[] = { 70 { "help", 0, std_help, G_NULL_OPTS }, 71 { "list", 0, std_list, G_NULL_OPTS }, 72 { "load", G_FLAG_VERBOSE | G_FLAG_LOADKLD, std_load, G_NULL_OPTS }, 73 { "unload", G_FLAG_VERBOSE, std_unload, G_NULL_OPTS }, 74 G_CMD_SENTINEL 75 }; 76 77 static void 78 std_usage(const char *name) 79 { 80 struct g_command *cmd; 81 struct g_option *opt; 82 unsigned i, j; 83 84 for (i = 0; ; i++) { 85 cmd = &class_commands[i]; 86 if (cmd->gc_name == NULL) 87 break; 88 fprintf(stderr, "%s %s %s %s", i == 0 ? "usage:" : " ", 89 name, class_name, cmd->gc_name); 90 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0) 91 fprintf(stderr, " [-v]"); 92 for (j = 0; ; j++) { 93 opt = &cmd->gc_options[j]; 94 if (opt->go_name == NULL) 95 break; 96 if (opt->go_val != NULL || opt->go_type == G_TYPE_NONE) 97 fprintf(stderr, " ["); 98 else 99 fprintf(stderr, " "); 100 fprintf(stderr, "-%c", opt->go_char); 101 if (opt->go_type != G_TYPE_NONE) 102 fprintf(stderr, " %s", opt->go_name); 103 if (opt->go_val != NULL || opt->go_type == G_TYPE_NONE) 104 fprintf(stderr, "]"); 105 } 106 fprintf(stderr, " ...\n"); 107 } 108 exit(EXIT_FAILURE); 109 } 110 111 static void 112 geom_usage(void) 113 { 114 115 if (class_name == NULL) { 116 errx(EXIT_FAILURE, "usage: %s <class> <command> [options]", 117 "geom"); 118 } else { 119 const char *prefix; 120 unsigned i; 121 122 if (usage == NULL) 123 prefix = "usage:"; 124 else { 125 usage(comm); 126 prefix = " "; 127 } 128 for (i = 0; ; i++) { 129 struct g_command *cmd; 130 131 cmd = &std_commands[i]; 132 if (cmd->gc_name == NULL) 133 break; 134 if (find_command(cmd->gc_name, 0) != NULL) 135 continue; 136 if (!std_available(cmd->gc_name)) 137 continue; 138 fprintf(stderr, "%s %s %s", prefix, comm, cmd->gc_name); 139 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0) 140 fprintf(stderr, " [-v]"); 141 fprintf(stderr, "\n"); 142 prefix = " "; 143 } 144 exit(EXIT_FAILURE); 145 } 146 } 147 148 static void 149 load_module(void) 150 { 151 char name1[64], name2[64]; 152 153 snprintf(name1, sizeof(name1), "g_%s", class_name); 154 snprintf(name2, sizeof(name2), "geom_%s", class_name); 155 if (modfind(name1) < 0) { 156 /* Not present in kernel, try loading it. */ 157 if (kldload(name2) < 0 || modfind(name1) < 0) { 158 if (errno != EEXIST) { 159 errx(EXIT_FAILURE, 160 "%s module not available!", name2); 161 } 162 } 163 } 164 } 165 166 static int 167 strlcatf(char *str, size_t size, const char *format, ...) 168 { 169 size_t len; 170 va_list ap; 171 int ret; 172 173 len = strlen(str); 174 str += len; 175 size -= len; 176 177 va_start(ap, format); 178 ret = vsnprintf(str, size, format, ap); 179 va_end(ap); 180 181 return (ret); 182 } 183 184 /* 185 * Find given option in options available for given command. 186 */ 187 static struct g_option * 188 find_option(struct g_command *cmd, char ch) 189 { 190 struct g_option *opt; 191 unsigned i; 192 193 for (i = 0; ; i++) { 194 opt = &cmd->gc_options[i]; 195 if (opt->go_name == NULL) 196 return (NULL); 197 if (opt->go_char == ch) 198 return (opt); 199 } 200 /* NOTREACHED */ 201 return (NULL); 202 } 203 204 /* 205 * Add given option to gctl_req. 206 */ 207 static void 208 set_option(struct gctl_req *req, struct g_option *opt, const char *val) 209 { 210 211 if (opt->go_type == G_TYPE_NUMBER) { 212 intmax_t number; 213 214 errno = 0; 215 number = strtoimax(optarg, NULL, 0); 216 if (errno != 0) { 217 err(EXIT_FAILURE, "Invalid value for '%c' argument.", 218 opt->go_char); 219 } 220 opt->go_val = malloc(sizeof(intmax_t)); 221 if (opt->go_val == NULL) 222 errx(EXIT_FAILURE, "No memory."); 223 *(intmax_t *)opt->go_val = number; 224 225 gctl_ro_param(req, opt->go_name, sizeof(intmax_t), opt->go_val); 226 } else if (opt->go_type == G_TYPE_STRING) { 227 gctl_ro_param(req, opt->go_name, -1, optarg); 228 } else /* if (opt->go_type == G_TYPE_NONE) */ { 229 opt->go_val = malloc(sizeof(int)); 230 if (opt->go_val == NULL) 231 errx(EXIT_FAILURE, "No memory."); 232 *(int *)opt->go_val = *val - '0'; 233 234 gctl_ro_param(req, opt->go_name, sizeof(int), 235 opt->go_val); 236 } 237 } 238 239 /* 240 * 1. Add given argument by caller. 241 * 2. Add default values of not given arguments. 242 * 3. Add the rest of arguments. 243 */ 244 static void 245 parse_arguments(struct g_command *cmd, struct gctl_req *req, int *argc, 246 char ***argv) 247 { 248 struct g_option *opt; 249 char opts[64]; 250 unsigned i; 251 int ch; 252 253 *opts = '\0'; 254 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0) 255 strlcat(opts, "v", sizeof(opts)); 256 for (i = 0; ; i++) { 257 opt = &cmd->gc_options[i]; 258 if (opt->go_name == NULL) 259 break; 260 strlcatf(opts, sizeof(opts), "%c", opt->go_char); 261 if (opt->go_type != G_TYPE_NONE) 262 strlcat(opts, ":", sizeof(opts)); 263 } 264 265 /* 266 * Add specified arguments. 267 */ 268 while ((ch = getopt(*argc, *argv, opts)) != -1) { 269 /* Standard (not passed to kernel) options. */ 270 switch (ch) { 271 case 'v': 272 verbose = 1; 273 continue; 274 } 275 /* Options passed to kernel. */ 276 opt = find_option(cmd, ch); 277 if (opt == NULL) 278 geom_usage(); 279 if (G_OPT_ISDONE(opt)) { 280 fprintf(stderr, "Flag '%c' specified twice.\n", 281 opt->go_char); 282 geom_usage(); 283 } 284 G_OPT_DONE(opt); 285 286 if (opt->go_type == G_TYPE_NONE) 287 set_option(req, opt, "1"); 288 else 289 set_option(req, opt, optarg); 290 } 291 *argc -= optind; 292 *argv += optind; 293 294 /* 295 * Add not specified arguments, but with default values. 296 */ 297 for (i = 0; ; i++) { 298 opt = &cmd->gc_options[i]; 299 if (opt->go_name == NULL) 300 break; 301 if (G_OPT_ISDONE(opt)) 302 continue; 303 304 if (opt->go_type == G_TYPE_NONE) { 305 assert(opt->go_val == NULL); 306 set_option(req, opt, "0"); 307 } else { 308 if (opt->go_val == NULL) { 309 fprintf(stderr, "Flag '%c' not specified.\n", 310 opt->go_char); 311 geom_usage(); 312 } else { 313 if (opt->go_type == G_TYPE_NUMBER) { 314 gctl_ro_param(req, opt->go_name, 315 sizeof(intmax_t), opt->go_val); 316 } else /* if (opt->go_type == G_TYPE_STRING)*/ { 317 gctl_ro_param(req, opt->go_name, -1, 318 opt->go_val); 319 } 320 } 321 } 322 } 323 /* 324 * Add rest of given arguments. 325 */ 326 gctl_ro_param(req, "nargs", sizeof(int), argc); 327 for (i = 0; i < (unsigned)*argc; i++) { 328 char argname[16]; 329 330 snprintf(argname, sizeof(argname), "arg%u", i); 331 gctl_ro_param(req, argname, -1, (*argv)[i]); 332 } 333 } 334 335 /* 336 * Find given command in commands available for given class. 337 */ 338 static struct g_command * 339 find_command(const char *cmdstr, int all) 340 { 341 struct g_command *cmd; 342 unsigned i; 343 344 /* 345 * First try to find command defined by loaded library. 346 */ 347 if (class_commands != NULL) { 348 for (i = 0; ; i++) { 349 cmd = &class_commands[i]; 350 if (cmd->gc_name == NULL) 351 break; 352 if (strcmp(cmd->gc_name, cmdstr) == 0) 353 return (cmd); 354 } 355 } 356 if (!all) 357 return (NULL); 358 /* 359 * Now try to find in standard commands. 360 */ 361 for (i = 0; ; i++) { 362 cmd = &std_commands[i]; 363 if (cmd->gc_name == NULL) 364 break; 365 if (!std_available(cmd->gc_name)) 366 continue; 367 if (strcmp(cmd->gc_name, cmdstr) == 0) 368 return (cmd); 369 } 370 return (NULL); 371 } 372 373 static unsigned 374 set_flags(struct g_command *cmd) 375 { 376 unsigned flags = 0; 377 378 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0 && verbose) 379 flags |= G_FLAG_VERBOSE; 380 381 return (flags); 382 } 383 384 /* 385 * Run command. 386 */ 387 static void 388 run_command(int argc, char *argv[]) 389 { 390 struct g_command *cmd; 391 struct gctl_req *req; 392 const char *errstr; 393 char buf[4096]; 394 395 cmd = find_command(argv[0], 1); 396 if (cmd == NULL) { 397 fprintf(stderr, "Unknown command: %s\n", argv[0]); 398 geom_usage(); 399 } 400 if ((cmd->gc_flags & G_FLAG_LOADKLD) != 0) 401 load_module(); 402 403 req = gctl_get_handle(); 404 gctl_ro_param(req, "class", -1, gclass_name); 405 gctl_ro_param(req, "verb", -1, argv[0]); 406 if (version != NULL) 407 gctl_ro_param(req, "version", sizeof(*version), version); 408 parse_arguments(cmd, req, &argc, &argv); 409 410 if (cmd->gc_func != NULL) { 411 unsigned flags; 412 413 flags = set_flags(cmd); 414 cmd->gc_func(req, flags); 415 errstr = req->error; 416 } else { 417 bzero(buf, sizeof(buf)); 418 gctl_rw_param(req, "output", sizeof(buf), buf); 419 errstr = gctl_issue(req); 420 } 421 if (errstr != NULL) { 422 fprintf(stderr, "%s\n", errstr); 423 gctl_free(req); 424 exit(EXIT_FAILURE); 425 } 426 if (*buf != '\0') 427 printf("%s", buf); 428 gctl_free(req); 429 if (verbose) 430 printf("Done.\n"); 431 exit(EXIT_SUCCESS); 432 } 433 434 static void 435 load_library(void) 436 { 437 char path[MAXPATHLEN]; 438 uint32_t *lib_version; 439 void *dlh; 440 441 snprintf(path, sizeof(path), "%s/geom_%s.so", CLASSDIR, class_name); 442 dlh = dlopen(path, RTLD_NOW); 443 if (dlh == NULL) { 444 #if 0 445 fprintf(stderr, "Cannot open library %s, but continuing " 446 "anyway.\n", path); 447 #endif 448 /* 449 * Even if library cannot be loaded, standard commands are 450 * available, so don't panic! 451 */ 452 return; 453 } 454 lib_version = dlsym(dlh, "lib_version"); 455 if (lib_version == NULL) { 456 fprintf(stderr, "Cannot find symbol %s: %s.\n", "lib_version", 457 dlerror()); 458 dlclose(dlh); 459 exit(EXIT_FAILURE); 460 } 461 if (*lib_version != G_LIB_VERSION) { 462 dlclose(dlh); 463 errx(EXIT_FAILURE, "%s and %s are not synchronized.", comm, 464 path); 465 } 466 version = dlsym(dlh, "version"); 467 if (version == NULL) { 468 fprintf(stderr, "Cannot find symbol %s: %s.\n", "version", 469 dlerror()); 470 dlclose(dlh); 471 exit(EXIT_FAILURE); 472 } 473 class_commands = dlsym(dlh, "class_commands"); 474 if (class_commands == NULL) { 475 fprintf(stderr, "Cannot find symbol %s: %s.\n", 476 "class_commands", dlerror()); 477 dlclose(dlh); 478 exit(EXIT_FAILURE); 479 } 480 usage = dlsym(dlh, "usage"); 481 if (usage == NULL) 482 usage = std_usage; 483 } 484 485 /* 486 * Class name should be all capital letters. 487 */ 488 static void 489 set_class_name(void) 490 { 491 char *s1, *s2; 492 493 gclass_name = malloc(strlen(class_name)); 494 if (gclass_name == NULL) 495 errx(EXIT_FAILURE, "No memory"); 496 s1 = gclass_name; 497 s2 = class_name; 498 for (; *s2 != '\0'; s2++) 499 *s1++ = toupper(*s2); 500 *s1 = '\0'; 501 } 502 503 static void 504 get_class(int *argc, char ***argv) 505 { 506 507 snprintf(comm, sizeof(comm), "%s", basename((*argv)[0])); 508 if (strcmp(comm, "geom") == 0) { 509 if (*argc < 2) 510 geom_usage(); 511 strlcatf(comm, sizeof(comm), " %s", (*argv)[1]); 512 class_name = (*argv)[1]; 513 *argc -= 2; 514 *argv += 2; 515 } else if (*comm == 'g') { 516 class_name = comm + 1; 517 *argc -= 1; 518 *argv += 1; 519 } else { 520 errx(EXIT_FAILURE, "Invalid utility name."); 521 } 522 set_class_name(); 523 load_library(); 524 if (*argc < 1) 525 geom_usage(); 526 } 527 528 int 529 main(int argc, char *argv[]) 530 { 531 532 get_class(&argc, &argv); 533 run_command(argc, argv); 534 /* NOTREACHED */ 535 536 exit(EXIT_FAILURE); 537 } 538 539 static struct gclass * 540 find_class(struct gmesh *mesh, const char *name) 541 { 542 struct gclass *classp; 543 544 LIST_FOREACH(classp, &mesh->lg_class, lg_class) { 545 if (strcmp(classp->lg_name, name) == 0) 546 return (classp); 547 } 548 return (NULL); 549 } 550 551 static struct ggeom * 552 find_geom(struct gclass *classp, const char *name) 553 { 554 struct ggeom *gp; 555 556 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 557 if (strcmp(gp->lg_name, name) == 0) 558 return (gp); 559 } 560 return (NULL); 561 } 562 563 static void 564 show_one_provider(struct gprovider *pp, const char *prefix) 565 { 566 struct gconfig *conf; 567 char buf[5]; 568 569 printf("Name: %s\n", pp->lg_name); 570 humanize_number(buf, sizeof(buf), (int64_t)pp->lg_mediasize, "", 571 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 572 printf("%sMediasize: %jd (%s)\n", prefix, (intmax_t)pp->lg_mediasize, 573 buf); 574 printf("%sSectorsize: %u\n", prefix, pp->lg_sectorsize); 575 printf("%sMode: %s\n", prefix, pp->lg_mode); 576 LIST_FOREACH(conf, &pp->lg_config, lg_config) { 577 printf("%s%s: %s\n", prefix, conf->lg_name, conf->lg_val); 578 } 579 } 580 581 static void 582 show_one_consumer(struct gconsumer *cp, const char *prefix) 583 { 584 struct gprovider *pp; 585 struct gconfig *conf; 586 587 pp = cp->lg_provider; 588 if (pp == NULL) 589 printf("[no provider]\n"); 590 else { 591 char buf[5]; 592 593 printf("Name: %s\n", pp->lg_name); 594 humanize_number(buf, sizeof(buf), (int64_t)pp->lg_mediasize, "", 595 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 596 printf("%sMediasize: %jd (%s)\n", prefix, 597 (intmax_t)pp->lg_mediasize, buf); 598 printf("%sSectorsize: %u\n", prefix, pp->lg_sectorsize); 599 printf("%sMode: %s\n", prefix, cp->lg_mode); 600 } 601 LIST_FOREACH(conf, &cp->lg_config, lg_config) { 602 printf("%s%s: %s\n", prefix, conf->lg_name, conf->lg_val); 603 } 604 } 605 606 static void 607 show_one_geom(struct ggeom *gp) 608 { 609 struct gprovider *pp; 610 struct gconsumer *cp; 611 struct gconfig *conf; 612 unsigned n; 613 614 printf("Geom name: %s\n", gp->lg_name); 615 LIST_FOREACH(conf, &gp->lg_config, lg_config) { 616 printf("%s: %s\n", conf->lg_name, conf->lg_val); 617 } 618 if (!LIST_EMPTY(&gp->lg_provider)) { 619 printf("Providers:\n"); 620 n = 1; 621 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 622 printf("%u. ", n++); 623 show_one_provider(pp, " "); 624 } 625 } 626 if (!LIST_EMPTY(&gp->lg_consumer)) { 627 printf("Consumers:\n"); 628 n = 1; 629 LIST_FOREACH(cp, &gp->lg_consumer, lg_consumer) { 630 printf("%u. ", n++); 631 show_one_consumer(cp, " "); 632 } 633 } 634 printf("\n"); 635 } 636 637 static void 638 std_help(struct gctl_req *req __unused, unsigned flags __unused) 639 { 640 641 geom_usage(); 642 } 643 644 static int 645 std_list_available(void) 646 { 647 struct gmesh mesh; 648 struct gclass *classp; 649 int error; 650 651 error = geom_gettree(&mesh); 652 if (error != 0) 653 exit(EXIT_FAILURE); 654 classp = find_class(&mesh, gclass_name); 655 geom_deletetree(&mesh); 656 if (classp != NULL) 657 return (1); 658 return (0); 659 } 660 661 static void 662 std_list(struct gctl_req *req, unsigned flags __unused) 663 { 664 struct gmesh mesh; 665 struct gclass *classp; 666 struct ggeom *gp; 667 int error, *nargs; 668 669 error = geom_gettree(&mesh); 670 if (error != 0) 671 exit(EXIT_FAILURE); 672 classp = find_class(&mesh, gclass_name); 673 if (classp == NULL) { 674 geom_deletetree(&mesh); 675 fprintf(stderr, "Class %s not found.\n", gclass_name); 676 return; 677 } 678 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 679 if (nargs == NULL) { 680 gctl_error(req, "No '%s' argument.", "nargs"); 681 geom_deletetree(&mesh); 682 return; 683 } 684 if (*nargs > 0) { 685 int i; 686 687 for (i = 0; i < *nargs; i++) { 688 const char *name; 689 char param[16]; 690 691 snprintf(param, sizeof(param), "arg%d", i); 692 name = gctl_get_asciiparam(req, param); 693 assert(name != NULL); 694 gp = find_geom(classp, name); 695 if (gp != NULL) 696 show_one_geom(gp); 697 else 698 fprintf(stderr, "No such geom: %s.\n", name); 699 } 700 } else { 701 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 702 show_one_geom(gp); 703 } 704 } 705 geom_deletetree(&mesh); 706 } 707 708 static int 709 std_load_available(void) 710 { 711 char name[MAXPATHLEN], paths[MAXPATHLEN * 8], *p; 712 struct stat sb; 713 size_t len; 714 715 snprintf(name, sizeof(name), "g_%s", class_name); 716 /* 717 * If already in kernel, "load" command is not available. 718 */ 719 if (modfind(name) >= 0) 720 return (0); 721 bzero(paths, sizeof(paths)); 722 len = sizeof(paths); 723 if (sysctlbyname("kern.module_path", paths, &len, NULL, 0) < 0) 724 err(EXIT_FAILURE, "sysctl(kern.module_path)"); 725 for (p = strtok(paths, ";"); p != NULL; p = strtok(NULL, ";")) { 726 snprintf(name, sizeof(name), "%s/geom_%s.ko", p, class_name); 727 /* 728 * If geom_<name>.ko file exists, "load" command is available. 729 */ 730 if (stat(name, &sb) == 0) 731 return (1); 732 } 733 return (0); 734 } 735 736 static void 737 std_load(struct gctl_req *req __unused, unsigned flags) 738 { 739 740 /* 741 * Do nothing special here, because of G_FLAG_LOADKLD flag, 742 * module is already loaded. 743 */ 744 if ((flags & G_FLAG_VERBOSE) != 0) 745 printf("Module available.\n"); 746 } 747 748 static int 749 std_unload_available(void) 750 { 751 char name[64]; 752 int id; 753 754 snprintf(name, sizeof(name), "geom_%s", class_name); 755 id = kldfind(name); 756 if (id >= 0) 757 return (1); 758 return (0); 759 } 760 761 static void 762 std_unload(struct gctl_req *req, unsigned flags __unused) 763 { 764 char name[64]; 765 int id; 766 767 snprintf(name, sizeof(name), "geom_%s", class_name); 768 id = kldfind(name); 769 if (id < 0) { 770 gctl_error(req, "Could not find module: %s.", strerror(errno)); 771 return; 772 } 773 if (kldunload(id) < 0) { 774 gctl_error(req, "Could not unload module: %s.", 775 strerror(errno)); 776 return; 777 } 778 } 779 780 static int 781 std_available(const char *name) 782 { 783 784 if (strcmp(name, "help") == 0) 785 return (1); 786 else if (strcmp(name, "list") == 0) 787 return (std_list_available()); 788 else if (strcmp(name, "load") == 0) 789 return (std_load_available()); 790 else if (strcmp(name, "unload") == 0) 791 return (std_unload_available()); 792 else 793 assert(!"Unknown standard command."); 794 return (0); 795 } 796