1 /*- 2 * Copyright (c) 2004-2009 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 #ifdef STATIC_GEOM_CLASSES 55 extern uint32_t gpart_version; 56 extern struct g_command gpart_class_commands[]; 57 extern uint32_t glabel_version; 58 extern struct g_command glabel_class_commands[]; 59 #endif 60 61 static char comm[MAXPATHLEN], *class_name = NULL, *gclass_name = NULL; 62 static uint32_t *version = NULL; 63 static int verbose = 0; 64 static struct g_command *class_commands = NULL; 65 66 #define GEOM_CLASS_CMDS 0x01 67 #define GEOM_STD_CMDS 0x02 68 static struct g_command *find_command(const char *cmdstr, int flags); 69 static int std_available(const char *name); 70 71 static void std_help(struct gctl_req *req, unsigned flags); 72 static void std_list(struct gctl_req *req, unsigned flags); 73 static void std_status(struct gctl_req *req, unsigned flags); 74 static void std_load(struct gctl_req *req, unsigned flags); 75 static void std_unload(struct gctl_req *req, unsigned flags); 76 77 struct g_command std_commands[] = { 78 { "help", 0, std_help, G_NULL_OPTS, NULL, NULL }, 79 { "list", 0, std_list, G_NULL_OPTS, NULL, 80 "[name ...]" 81 }, 82 { "status", 0, std_status, 83 { 84 { 's', "script", NULL, G_TYPE_BOOL }, 85 G_OPT_SENTINEL 86 }, 87 NULL, "[-s] [name ...]" 88 }, 89 { "load", G_FLAG_VERBOSE | G_FLAG_LOADKLD, std_load, G_NULL_OPTS, 90 NULL, NULL }, 91 { "unload", G_FLAG_VERBOSE, std_unload, G_NULL_OPTS, NULL, NULL }, 92 G_CMD_SENTINEL 93 }; 94 95 static void 96 usage_command(struct g_command *cmd, const char *prefix) 97 { 98 struct g_option *opt; 99 unsigned i; 100 101 if (cmd->gc_usage != NULL) { 102 char *pos, *ptr, *sptr; 103 104 sptr = ptr = strdup(cmd->gc_usage); 105 while ((pos = strsep(&ptr, "\n")) != NULL) { 106 if (*pos == '\0') 107 continue; 108 fprintf(stderr, "%s %s %s %s\n", prefix, comm, 109 cmd->gc_name, pos); 110 } 111 free(sptr); 112 return; 113 } 114 115 fprintf(stderr, "%s %s %s", prefix, comm, cmd->gc_name); 116 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0) 117 fprintf(stderr, " [-v]"); 118 for (i = 0; ; i++) { 119 opt = &cmd->gc_options[i]; 120 if (opt->go_name == NULL) 121 break; 122 if (opt->go_val != NULL || G_OPT_TYPE(opt) == G_TYPE_BOOL) 123 fprintf(stderr, " ["); 124 else 125 fprintf(stderr, " "); 126 fprintf(stderr, "-%c", opt->go_char); 127 if (G_OPT_TYPE(opt) != G_TYPE_BOOL) 128 fprintf(stderr, " %s", opt->go_name); 129 if (opt->go_val != NULL || G_OPT_TYPE(opt) == G_TYPE_BOOL) 130 fprintf(stderr, "]"); 131 } 132 if (cmd->gc_argname) 133 fprintf(stderr, " %s", cmd->gc_argname); 134 fprintf(stderr, "\n"); 135 } 136 137 static void 138 usage(void) 139 { 140 141 if (class_name == NULL) { 142 errx(EXIT_FAILURE, "usage: %s <class> <command> [options]", 143 "geom"); 144 } else { 145 struct g_command *cmd; 146 const char *prefix; 147 unsigned i; 148 149 prefix = "usage:"; 150 if (class_commands != NULL) { 151 for (i = 0; ; i++) { 152 cmd = &class_commands[i]; 153 if (cmd->gc_name == NULL) 154 break; 155 usage_command(cmd, prefix); 156 prefix = " "; 157 } 158 } 159 for (i = 0; ; i++) { 160 cmd = &std_commands[i]; 161 if (cmd->gc_name == NULL) 162 break; 163 /* 164 * If class defines command, which has the same name as 165 * standard command, skip it, because it was already 166 * shown on usage(). 167 */ 168 if (find_command(cmd->gc_name, GEOM_CLASS_CMDS) != NULL) 169 continue; 170 usage_command(cmd, prefix); 171 prefix = " "; 172 } 173 exit(EXIT_FAILURE); 174 } 175 } 176 177 static void 178 load_module(void) 179 { 180 char name1[64], name2[64]; 181 182 snprintf(name1, sizeof(name1), "g_%s", class_name); 183 snprintf(name2, sizeof(name2), "geom_%s", class_name); 184 if (modfind(name1) < 0) { 185 /* Not present in kernel, try loading it. */ 186 if (kldload(name2) < 0 || modfind(name1) < 0) { 187 if (errno != EEXIST) { 188 errx(EXIT_FAILURE, 189 "%s module not available!", name2); 190 } 191 } 192 } 193 } 194 195 static int 196 strlcatf(char *str, size_t size, const char *format, ...) 197 { 198 size_t len; 199 va_list ap; 200 int ret; 201 202 len = strlen(str); 203 str += len; 204 size -= len; 205 206 va_start(ap, format); 207 ret = vsnprintf(str, size, format, ap); 208 va_end(ap); 209 210 return (ret); 211 } 212 213 /* 214 * Find given option in options available for given command. 215 */ 216 static struct g_option * 217 find_option(struct g_command *cmd, char ch) 218 { 219 struct g_option *opt; 220 unsigned i; 221 222 for (i = 0; ; i++) { 223 opt = &cmd->gc_options[i]; 224 if (opt->go_name == NULL) 225 return (NULL); 226 if (opt->go_char == ch) 227 return (opt); 228 } 229 /* NOTREACHED */ 230 return (NULL); 231 } 232 233 /* 234 * Add given option to gctl_req. 235 */ 236 static void 237 set_option(struct gctl_req *req, struct g_option *opt, const char *val) 238 { 239 char *s; 240 intmax_t number; 241 242 if (G_OPT_TYPE(opt) == G_TYPE_NUMBER || 243 G_OPT_TYPE(opt) == G_TYPE_ASCNUM) { 244 if (expand_number(val, &number) == -1) { 245 err(EXIT_FAILURE, "Invalid value for '%c' argument.", 246 opt->go_char); 247 } 248 if (G_OPT_TYPE(opt) == G_TYPE_NUMBER) 249 opt->go_val = malloc(sizeof(intmax_t)); 250 else { 251 asprintf(&s, "%jd", number); 252 opt->go_val = s; 253 } 254 if (opt->go_val == NULL) 255 errx(EXIT_FAILURE, "No memory."); 256 if (G_OPT_TYPE(opt) == G_TYPE_NUMBER) { 257 *(intmax_t *)opt->go_val = number; 258 gctl_ro_param(req, opt->go_name, sizeof(intmax_t), 259 opt->go_val); 260 } else 261 gctl_ro_param(req, opt->go_name, -1, opt->go_val); 262 } else if (G_OPT_TYPE(opt) == G_TYPE_ASCLBA) { 263 /* 264 * LBAs are ugly. The argument is a sector. The size of a 265 * sector is context specific (i.e. determined by the media), 266 * which we don't know here. But when users enter a value 267 * with a SI unit, they really mean the byte-size or byte- 268 * offset and not the size or offset in sectors. 269 * So how can we map the byte-oriented value into a sector- 270 * oriented value if we don't know the sector size in bytes? 271 * The approach taken here is: 272 * o Sectors are 512 bytes in size. Mostly the case anyway. 273 * o When no SI unit is specified the value is in sectors. 274 * o With an SI unit the value is in bytes. 275 * o The 'b' suffix forces byte interpretation and the 's' 276 * suffix forces sector interpretation. 277 * 278 * Thus: 279 * o 2 and 2s mean 2 sectors, and 2b means 2 bytes. 280 * o 4k and 4kb mean 4096 bytes, and 4ks means 4096 sectors. 281 * 282 * "This seemed like a good idea at the time" 283 */ 284 intmax_t mult, unit; 285 286 number = strtoimax(val, &s, 0); 287 if (s == val) 288 errc(EXIT_FAILURE, EINVAL, "argument '%c'", 289 opt->go_char); 290 mult = 1; 291 unit = 512; /* sector */ 292 if (*s == '\0') 293 goto done; 294 switch (*s) { 295 case 'e': case 'E': 296 mult *= 1024; 297 /*FALLTHROUGH*/ 298 case 'p': case 'P': 299 mult *= 1024; 300 /*FALLTHROUGH*/ 301 case 't': case 'T': 302 mult *= 1024; 303 /*FALLTHROUGH*/ 304 case 'g': case 'G': 305 mult *= 1024; 306 /*FALLTHROUGH*/ 307 case 'm': case 'M': 308 mult *= 1024; 309 /*FALLTHROUGH*/ 310 case 'k': case 'K': 311 mult *= 1024; 312 break; 313 default: 314 goto sfx; 315 } 316 unit = 1; /* bytes */ 317 s++; 318 if (*s == '\0') 319 goto done; 320 sfx: 321 switch (*s) { 322 case 's': case 'S': 323 unit = 512; /* sector */ 324 break; 325 case 'b': case 'B': 326 unit = 1; /* bytes */ 327 break; 328 default: 329 errc(EXIT_FAILURE, EINVAL, "argument '%c': suffix '%c'", 330 opt->go_char, *s); 331 } 332 s++; 333 if (*s != '\0') 334 errx(EXIT_FAILURE, "argument '%c': junk at end (%s)", 335 opt->go_char, s); 336 done: 337 if (mult * unit < mult || number * mult * unit < number) 338 errc(EXIT_FAILURE, ERANGE, "argument '%c'", 339 opt->go_char); 340 number *= mult * unit; 341 if (number % 512) 342 errx(EXIT_FAILURE, "argument '%c': " 343 "not a valid block address", opt->go_char); 344 number /= 512; 345 asprintf(&s, "%jd", number); 346 if (s == NULL) 347 err(EXIT_FAILURE, NULL); 348 opt->go_val = s; 349 gctl_ro_param(req, opt->go_name, -1, s); 350 } else if (G_OPT_TYPE(opt) == G_TYPE_STRING) { 351 gctl_ro_param(req, opt->go_name, -1, val); 352 } else if (G_OPT_TYPE(opt) == G_TYPE_BOOL) { 353 opt->go_val = malloc(sizeof(int)); 354 if (opt->go_val == NULL) 355 errx(EXIT_FAILURE, "No memory."); 356 *(int *)opt->go_val = *val - '0'; 357 gctl_ro_param(req, opt->go_name, sizeof(int), opt->go_val); 358 } else { 359 assert(!"Invalid type"); 360 } 361 } 362 363 /* 364 * 1. Add given argument by caller. 365 * 2. Add default values of not given arguments. 366 * 3. Add the rest of arguments. 367 */ 368 static void 369 parse_arguments(struct g_command *cmd, struct gctl_req *req, int *argc, 370 char ***argv) 371 { 372 struct g_option *opt; 373 char opts[64]; 374 unsigned i; 375 int ch; 376 377 *opts = '\0'; 378 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0) 379 strlcat(opts, "v", sizeof(opts)); 380 for (i = 0; ; i++) { 381 opt = &cmd->gc_options[i]; 382 if (opt->go_name == NULL) 383 break; 384 assert(G_OPT_TYPE(opt) != 0); 385 assert((opt->go_type & ~G_TYPE_MASK) == 0); 386 strlcatf(opts, sizeof(opts), "%c", opt->go_char); 387 if (G_OPT_TYPE(opt) != G_TYPE_BOOL) 388 strlcat(opts, ":", sizeof(opts)); 389 } 390 391 /* 392 * Add specified arguments. 393 */ 394 while ((ch = getopt(*argc, *argv, opts)) != -1) { 395 /* Standard (not passed to kernel) options. */ 396 switch (ch) { 397 case 'v': 398 verbose = 1; 399 continue; 400 } 401 /* Options passed to kernel. */ 402 opt = find_option(cmd, ch); 403 if (opt == NULL) 404 usage(); 405 if (G_OPT_ISDONE(opt)) { 406 warnx("Option '%c' specified twice.", opt->go_char); 407 usage(); 408 } 409 G_OPT_DONE(opt); 410 411 if (G_OPT_TYPE(opt) == G_TYPE_BOOL) 412 set_option(req, opt, "1"); 413 else 414 set_option(req, opt, optarg); 415 } 416 *argc -= optind; 417 *argv += optind; 418 419 /* 420 * Add not specified arguments, but with default values. 421 */ 422 for (i = 0; ; i++) { 423 opt = &cmd->gc_options[i]; 424 if (opt->go_name == NULL) 425 break; 426 if (G_OPT_ISDONE(opt)) 427 continue; 428 429 if (G_OPT_TYPE(opt) == G_TYPE_BOOL) { 430 assert(opt->go_val == NULL); 431 set_option(req, opt, "0"); 432 } else { 433 if (opt->go_val == NULL) { 434 warnx("Option '%c' not specified.", 435 opt->go_char); 436 usage(); 437 } else { 438 if (G_OPT_TYPE(opt) == G_TYPE_NUMBER) { 439 gctl_ro_param(req, opt->go_name, 440 sizeof(intmax_t), opt->go_val); 441 } else if (G_OPT_TYPE(opt) == G_TYPE_STRING || 442 G_OPT_TYPE(opt) == G_TYPE_ASCNUM || 443 G_OPT_TYPE(opt) == G_TYPE_ASCLBA) { 444 if (cmd->gc_argname == NULL || 445 opt->go_val == NULL || 446 *(char *)opt->go_val != '\0') 447 gctl_ro_param(req, opt->go_name, 448 -1, opt->go_val); 449 } else { 450 assert(!"Invalid type"); 451 } 452 } 453 } 454 } 455 456 if (cmd->gc_argname == NULL) { 457 /* 458 * Add rest of given arguments. 459 */ 460 gctl_ro_param(req, "nargs", sizeof(int), argc); 461 for (i = 0; i < (unsigned)*argc; i++) { 462 char argname[16]; 463 464 snprintf(argname, sizeof(argname), "arg%u", i); 465 gctl_ro_param(req, argname, -1, (*argv)[i]); 466 } 467 } else { 468 if (*argc != 1) 469 usage(); 470 gctl_ro_param(req, cmd->gc_argname, -1, (*argv)[0]); 471 } 472 } 473 474 /* 475 * Find given command in commands available for given class. 476 */ 477 static struct g_command * 478 find_command(const char *cmdstr, int flags) 479 { 480 struct g_command *cmd; 481 unsigned i; 482 483 /* 484 * First try to find command defined by loaded library. 485 */ 486 if ((flags & GEOM_CLASS_CMDS) != 0 && class_commands != NULL) { 487 for (i = 0; ; i++) { 488 cmd = &class_commands[i]; 489 if (cmd->gc_name == NULL) 490 break; 491 if (strcmp(cmd->gc_name, cmdstr) == 0) 492 return (cmd); 493 } 494 } 495 /* 496 * Now try to find in standard commands. 497 */ 498 if ((flags & GEOM_STD_CMDS) != 0) { 499 for (i = 0; ; i++) { 500 cmd = &std_commands[i]; 501 if (cmd->gc_name == NULL) 502 break; 503 if (strcmp(cmd->gc_name, cmdstr) == 0) 504 return (cmd); 505 } 506 } 507 return (NULL); 508 } 509 510 static unsigned 511 set_flags(struct g_command *cmd) 512 { 513 unsigned flags = 0; 514 515 if ((cmd->gc_flags & G_FLAG_VERBOSE) != 0 && verbose) 516 flags |= G_FLAG_VERBOSE; 517 518 return (flags); 519 } 520 521 /* 522 * Run command. 523 */ 524 static void 525 run_command(int argc, char *argv[]) 526 { 527 struct g_command *cmd; 528 struct gctl_req *req; 529 const char *errstr; 530 char buf[4096]; 531 532 /* First try to find a command defined by a class. */ 533 cmd = find_command(argv[0], GEOM_CLASS_CMDS); 534 if (cmd == NULL) { 535 /* Now, try to find a standard command. */ 536 cmd = find_command(argv[0], GEOM_STD_CMDS); 537 if (cmd == NULL) { 538 warnx("Unknown command: %s.", argv[0]); 539 usage(); 540 } 541 if (!std_available(cmd->gc_name)) { 542 warnx("Command '%s' not available.", argv[0]); 543 exit(EXIT_FAILURE); 544 } 545 } 546 if ((cmd->gc_flags & G_FLAG_LOADKLD) != 0) 547 load_module(); 548 549 req = gctl_get_handle(); 550 gctl_ro_param(req, "class", -1, gclass_name); 551 gctl_ro_param(req, "verb", -1, argv[0]); 552 if (version != NULL) 553 gctl_ro_param(req, "version", sizeof(*version), version); 554 parse_arguments(cmd, req, &argc, &argv); 555 556 bzero(buf, sizeof(buf)); 557 if (cmd->gc_func != NULL) { 558 unsigned flags; 559 560 flags = set_flags(cmd); 561 cmd->gc_func(req, flags); 562 errstr = req->error; 563 } else { 564 gctl_rw_param(req, "output", sizeof(buf), buf); 565 errstr = gctl_issue(req); 566 } 567 if (errstr != NULL && errstr[0] != '\0') { 568 warnx("%s", errstr); 569 if (strncmp(errstr, "warning: ", strlen("warning: ")) != 0) { 570 gctl_free(req); 571 exit(EXIT_FAILURE); 572 } 573 } 574 if (buf[0] != '\0') 575 printf("%s", buf); 576 gctl_free(req); 577 if (verbose) 578 printf("Done.\n"); 579 exit(EXIT_SUCCESS); 580 } 581 582 #ifndef STATIC_GEOM_CLASSES 583 static const char * 584 library_path(void) 585 { 586 const char *path; 587 588 path = getenv("GEOM_LIBRARY_PATH"); 589 if (path == NULL) 590 path = CLASS_DIR; 591 return (path); 592 } 593 594 static void 595 load_library(void) 596 { 597 char *curpath, path[MAXPATHLEN], *tofree, *totalpath; 598 uint32_t *lib_version; 599 void *dlh; 600 int ret; 601 602 ret = 0; 603 tofree = totalpath = strdup(library_path()); 604 if (totalpath == NULL) 605 err(EXIT_FAILURE, "Not enough memory for library path"); 606 607 if (strchr(totalpath, ':') != NULL) 608 curpath = strsep(&totalpath, ":"); 609 else 610 curpath = totalpath; 611 /* Traverse the paths to find one that contains the library we want. */ 612 while (curpath != NULL) { 613 snprintf(path, sizeof(path), "%s/geom_%s.so", curpath, 614 class_name); 615 ret = access(path, F_OK); 616 if (ret == -1) { 617 if (errno == ENOENT) { 618 /* 619 * If we cannot find library, try the next 620 * path. 621 */ 622 curpath = strsep(&totalpath, ":"); 623 continue; 624 } 625 err(EXIT_FAILURE, "Cannot access library"); 626 } 627 break; 628 } 629 free(tofree); 630 /* No library was found, but standard commands can still be used */ 631 if (ret == -1) 632 return; 633 dlh = dlopen(path, RTLD_NOW); 634 if (dlh == NULL) 635 errx(EXIT_FAILURE, "Cannot open library: %s.", dlerror()); 636 lib_version = dlsym(dlh, "lib_version"); 637 if (lib_version == NULL) { 638 warnx("Cannot find symbol %s: %s.", "lib_version", dlerror()); 639 dlclose(dlh); 640 exit(EXIT_FAILURE); 641 } 642 if (*lib_version != G_LIB_VERSION) { 643 dlclose(dlh); 644 errx(EXIT_FAILURE, "%s and %s are not synchronized.", 645 getprogname(), path); 646 } 647 version = dlsym(dlh, "version"); 648 if (version == NULL) { 649 warnx("Cannot find symbol %s: %s.", "version", dlerror()); 650 dlclose(dlh); 651 exit(EXIT_FAILURE); 652 } 653 class_commands = dlsym(dlh, "class_commands"); 654 if (class_commands == NULL) { 655 warnx("Cannot find symbol %s: %s.", "class_commands", 656 dlerror()); 657 dlclose(dlh); 658 exit(EXIT_FAILURE); 659 } 660 } 661 #endif /* !STATIC_GEOM_CLASSES */ 662 663 /* 664 * Class name should be all capital letters. 665 */ 666 static void 667 set_class_name(void) 668 { 669 char *s1, *s2; 670 671 s1 = class_name; 672 for (; *s1 != '\0'; s1++) 673 *s1 = tolower(*s1); 674 gclass_name = malloc(strlen(class_name) + 1); 675 if (gclass_name == NULL) 676 errx(EXIT_FAILURE, "No memory"); 677 s1 = gclass_name; 678 s2 = class_name; 679 for (; *s2 != '\0'; s2++) 680 *s1++ = toupper(*s2); 681 *s1 = '\0'; 682 } 683 684 static void 685 get_class(int *argc, char ***argv) 686 { 687 688 snprintf(comm, sizeof(comm), "%s", basename((*argv)[0])); 689 if (strcmp(comm, "geom") == 0) { 690 if (*argc < 2) 691 usage(); 692 else if (*argc == 2) { 693 if (strcmp((*argv)[1], "-h") == 0 || 694 strcmp((*argv)[1], "help") == 0) { 695 usage(); 696 } 697 } 698 strlcatf(comm, sizeof(comm), " %s", (*argv)[1]); 699 class_name = (*argv)[1]; 700 *argc -= 2; 701 *argv += 2; 702 } else if (*comm == 'g') { 703 class_name = comm + 1; 704 *argc -= 1; 705 *argv += 1; 706 } else { 707 errx(EXIT_FAILURE, "Invalid utility name."); 708 } 709 710 #ifndef STATIC_GEOM_CLASSES 711 load_library(); 712 #else 713 if (!strcasecmp(class_name, "part")) { 714 version = &gpart_version; 715 class_commands = gpart_class_commands; 716 } else if (!strcasecmp(class_name, "label")) { 717 version = &glabel_version; 718 class_commands = glabel_class_commands; 719 } else 720 errx(EXIT_FAILURE, "Invalid class name."); 721 #endif /* !STATIC_GEOM_CLASSES */ 722 723 set_class_name(); 724 if (*argc < 1) 725 usage(); 726 } 727 728 int 729 main(int argc, char *argv[]) 730 { 731 732 get_class(&argc, &argv); 733 run_command(argc, argv); 734 /* NOTREACHED */ 735 736 exit(EXIT_FAILURE); 737 } 738 739 static struct gclass * 740 find_class(struct gmesh *mesh, const char *name) 741 { 742 struct gclass *classp; 743 744 LIST_FOREACH(classp, &mesh->lg_class, lg_class) { 745 if (strcmp(classp->lg_name, name) == 0) 746 return (classp); 747 } 748 return (NULL); 749 } 750 751 static struct ggeom * 752 find_geom(struct gclass *classp, const char *name) 753 { 754 struct ggeom *gp; 755 756 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 757 if (strcmp(gp->lg_name, name) == 0) 758 return (gp); 759 } 760 return (NULL); 761 } 762 763 static void 764 list_one_provider(struct gprovider *pp, const char *prefix) 765 { 766 struct gconfig *conf; 767 char buf[5]; 768 769 printf("Name: %s\n", pp->lg_name); 770 humanize_number(buf, sizeof(buf), (int64_t)pp->lg_mediasize, "", 771 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 772 printf("%sMediasize: %jd (%s)\n", prefix, (intmax_t)pp->lg_mediasize, 773 buf); 774 printf("%sSectorsize: %u\n", prefix, pp->lg_sectorsize); 775 printf("%sMode: %s\n", prefix, pp->lg_mode); 776 LIST_FOREACH(conf, &pp->lg_config, lg_config) { 777 printf("%s%s: %s\n", prefix, conf->lg_name, conf->lg_val); 778 } 779 } 780 781 static void 782 list_one_consumer(struct gconsumer *cp, const char *prefix) 783 { 784 struct gprovider *pp; 785 struct gconfig *conf; 786 787 pp = cp->lg_provider; 788 if (pp == NULL) 789 printf("[no provider]\n"); 790 else { 791 char buf[5]; 792 793 printf("Name: %s\n", pp->lg_name); 794 humanize_number(buf, sizeof(buf), (int64_t)pp->lg_mediasize, "", 795 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 796 printf("%sMediasize: %jd (%s)\n", prefix, 797 (intmax_t)pp->lg_mediasize, buf); 798 printf("%sSectorsize: %u\n", prefix, pp->lg_sectorsize); 799 printf("%sMode: %s\n", prefix, cp->lg_mode); 800 } 801 LIST_FOREACH(conf, &cp->lg_config, lg_config) { 802 printf("%s%s: %s\n", prefix, conf->lg_name, conf->lg_val); 803 } 804 } 805 806 static void 807 list_one_geom(struct ggeom *gp) 808 { 809 struct gprovider *pp; 810 struct gconsumer *cp; 811 struct gconfig *conf; 812 unsigned n; 813 814 printf("Geom name: %s\n", gp->lg_name); 815 LIST_FOREACH(conf, &gp->lg_config, lg_config) { 816 printf("%s: %s\n", conf->lg_name, conf->lg_val); 817 } 818 if (!LIST_EMPTY(&gp->lg_provider)) { 819 printf("Providers:\n"); 820 n = 1; 821 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 822 printf("%u. ", n++); 823 list_one_provider(pp, " "); 824 } 825 } 826 if (!LIST_EMPTY(&gp->lg_consumer)) { 827 printf("Consumers:\n"); 828 n = 1; 829 LIST_FOREACH(cp, &gp->lg_consumer, lg_consumer) { 830 printf("%u. ", n++); 831 list_one_consumer(cp, " "); 832 } 833 } 834 printf("\n"); 835 } 836 837 static void 838 std_help(struct gctl_req *req __unused, unsigned flags __unused) 839 { 840 841 usage(); 842 } 843 844 static int 845 std_list_available(void) 846 { 847 struct gmesh mesh; 848 struct gclass *classp; 849 int error; 850 851 error = geom_gettree(&mesh); 852 if (error != 0) 853 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 854 classp = find_class(&mesh, gclass_name); 855 geom_deletetree(&mesh); 856 if (classp != NULL) 857 return (1); 858 return (0); 859 } 860 861 static void 862 std_list(struct gctl_req *req, unsigned flags __unused) 863 { 864 struct gmesh mesh; 865 struct gclass *classp; 866 struct ggeom *gp; 867 const char *name; 868 int error, i, nargs; 869 870 error = geom_gettree(&mesh); 871 if (error != 0) 872 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 873 classp = find_class(&mesh, gclass_name); 874 if (classp == NULL) { 875 geom_deletetree(&mesh); 876 errx(EXIT_FAILURE, "Class %s not found.", gclass_name); 877 } 878 nargs = gctl_get_int(req, "nargs"); 879 if (nargs > 0) { 880 for (i = 0; i < nargs; i++) { 881 name = gctl_get_ascii(req, "arg%d", i); 882 gp = find_geom(classp, name); 883 if (gp != NULL) 884 list_one_geom(gp); 885 else 886 errx(EXIT_FAILURE, "No such geom: %s.", name); 887 } 888 } else { 889 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 890 if (LIST_EMPTY(&gp->lg_provider)) 891 continue; 892 list_one_geom(gp); 893 } 894 } 895 geom_deletetree(&mesh); 896 } 897 898 static int 899 std_status_available(void) 900 { 901 902 /* 'status' command is available when 'list' command is. */ 903 return (std_list_available()); 904 } 905 906 static void 907 status_update_len(struct ggeom *gp, int *name_len, int *status_len) 908 { 909 struct gprovider *pp; 910 struct gconfig *conf; 911 int len; 912 913 assert(gp != NULL); 914 assert(name_len != NULL); 915 assert(status_len != NULL); 916 917 pp = LIST_FIRST(&gp->lg_provider); 918 if (pp != NULL) 919 len = strlen(pp->lg_name); 920 else 921 len = strlen(gp->lg_name); 922 if (*name_len < len) 923 *name_len = len; 924 LIST_FOREACH(conf, &gp->lg_config, lg_config) { 925 if (strcasecmp(conf->lg_name, "state") == 0) { 926 len = strlen(conf->lg_val); 927 if (*status_len < len) 928 *status_len = len; 929 } 930 } 931 } 932 933 static char * 934 status_one_consumer(struct gconsumer *cp) 935 { 936 static char buf[256]; 937 struct gprovider *pp; 938 struct gconfig *conf; 939 940 pp = cp->lg_provider; 941 if (pp == NULL) 942 return (NULL); 943 LIST_FOREACH(conf, &cp->lg_config, lg_config) { 944 if (strcasecmp(conf->lg_name, "synchronized") == 0) 945 break; 946 } 947 if (conf == NULL) 948 snprintf(buf, sizeof(buf), "%s", pp->lg_name); 949 else { 950 snprintf(buf, sizeof(buf), "%s (%s)", pp->lg_name, 951 conf->lg_val); 952 } 953 return (buf); 954 } 955 956 static void 957 status_one_geom(struct ggeom *gp, int script, int name_len, int status_len) 958 { 959 struct gprovider *pp; 960 struct gconsumer *cp; 961 struct gconfig *conf; 962 const char *name, *status, *component; 963 int gotone; 964 965 pp = LIST_FIRST(&gp->lg_provider); 966 if (pp != NULL) 967 name = pp->lg_name; 968 else 969 name = gp->lg_name; 970 LIST_FOREACH(conf, &gp->lg_config, lg_config) { 971 if (strcasecmp(conf->lg_name, "state") == 0) 972 break; 973 } 974 if (conf == NULL) 975 status = "N/A"; 976 else 977 status = conf->lg_val; 978 gotone = 0; 979 LIST_FOREACH(cp, &gp->lg_consumer, lg_consumer) { 980 component = status_one_consumer(cp); 981 if (component == NULL) 982 continue; 983 gotone = 1; 984 printf("%*s %*s %s\n", name_len, name, status_len, status, 985 component); 986 if (!script) 987 name = status = ""; 988 } 989 if (!gotone) { 990 printf("%*s %*s %s\n", name_len, name, status_len, status, 991 "N/A"); 992 } 993 } 994 995 static void 996 std_status(struct gctl_req *req, unsigned flags __unused) 997 { 998 struct gmesh mesh; 999 struct gclass *classp; 1000 struct ggeom *gp; 1001 const char *name; 1002 int name_len, status_len; 1003 int error, i, n, nargs, script; 1004 1005 error = geom_gettree(&mesh); 1006 if (error != 0) 1007 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 1008 classp = find_class(&mesh, gclass_name); 1009 if (classp == NULL) 1010 errx(EXIT_FAILURE, "Class %s not found.", gclass_name); 1011 nargs = gctl_get_int(req, "nargs"); 1012 script = gctl_get_int(req, "script"); 1013 name_len = strlen("Name"); 1014 status_len = strlen("Status"); 1015 if (nargs > 0) { 1016 for (i = 0, n = 0; i < nargs; i++) { 1017 name = gctl_get_ascii(req, "arg%d", i); 1018 gp = find_geom(classp, name); 1019 if (gp == NULL) 1020 errx(EXIT_FAILURE, "No such geom: %s.", name); 1021 else { 1022 status_update_len(gp, &name_len, &status_len); 1023 n++; 1024 } 1025 } 1026 if (n == 0) 1027 goto end; 1028 } else { 1029 n = 0; 1030 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 1031 if (LIST_EMPTY(&gp->lg_provider)) 1032 continue; 1033 status_update_len(gp, &name_len, &status_len); 1034 n++; 1035 } 1036 if (n == 0) 1037 goto end; 1038 } 1039 if (!script) { 1040 printf("%*s %*s %s\n", name_len, "Name", status_len, "Status", 1041 "Components"); 1042 } 1043 if (nargs > 0) { 1044 for (i = 0; i < nargs; i++) { 1045 name = gctl_get_ascii(req, "arg%d", i); 1046 gp = find_geom(classp, name); 1047 if (gp != NULL) { 1048 status_one_geom(gp, script, name_len, 1049 status_len); 1050 } 1051 } 1052 } else { 1053 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 1054 if (LIST_EMPTY(&gp->lg_provider)) 1055 continue; 1056 status_one_geom(gp, script, name_len, status_len); 1057 } 1058 } 1059 end: 1060 geom_deletetree(&mesh); 1061 } 1062 1063 static int 1064 std_load_available(void) 1065 { 1066 char name[MAXPATHLEN], paths[MAXPATHLEN * 8], *p; 1067 struct stat sb; 1068 size_t len; 1069 1070 snprintf(name, sizeof(name), "g_%s", class_name); 1071 /* 1072 * If already in kernel, "load" command is not available. 1073 */ 1074 if (modfind(name) >= 0) 1075 return (0); 1076 bzero(paths, sizeof(paths)); 1077 len = sizeof(paths); 1078 if (sysctlbyname("kern.module_path", paths, &len, NULL, 0) < 0) 1079 err(EXIT_FAILURE, "sysctl(kern.module_path)"); 1080 for (p = strtok(paths, ";"); p != NULL; p = strtok(NULL, ";")) { 1081 snprintf(name, sizeof(name), "%s/geom_%s.ko", p, class_name); 1082 /* 1083 * If geom_<name>.ko file exists, "load" command is available. 1084 */ 1085 if (stat(name, &sb) == 0) 1086 return (1); 1087 } 1088 return (0); 1089 } 1090 1091 static void 1092 std_load(struct gctl_req *req __unused, unsigned flags) 1093 { 1094 1095 /* 1096 * Do nothing special here, because of G_FLAG_LOADKLD flag, 1097 * module is already loaded. 1098 */ 1099 if ((flags & G_FLAG_VERBOSE) != 0) 1100 printf("Module available.\n"); 1101 } 1102 1103 static int 1104 std_unload_available(void) 1105 { 1106 char name[64]; 1107 int id; 1108 1109 snprintf(name, sizeof(name), "geom_%s", class_name); 1110 id = kldfind(name); 1111 if (id >= 0) 1112 return (1); 1113 return (0); 1114 } 1115 1116 static void 1117 std_unload(struct gctl_req *req, unsigned flags __unused) 1118 { 1119 char name[64]; 1120 int id; 1121 1122 snprintf(name, sizeof(name), "geom_%s", class_name); 1123 id = kldfind(name); 1124 if (id < 0) { 1125 gctl_error(req, "Could not find module: %s.", strerror(errno)); 1126 return; 1127 } 1128 if (kldunload(id) < 0) { 1129 gctl_error(req, "Could not unload module: %s.", 1130 strerror(errno)); 1131 return; 1132 } 1133 } 1134 1135 static int 1136 std_available(const char *name) 1137 { 1138 1139 if (strcmp(name, "help") == 0) 1140 return (1); 1141 else if (strcmp(name, "list") == 0) 1142 return (std_list_available()); 1143 else if (strcmp(name, "status") == 0) 1144 return (std_status_available()); 1145 else if (strcmp(name, "load") == 0) 1146 return (std_load_available()); 1147 else if (strcmp(name, "unload") == 0) 1148 return (std_unload_available()); 1149 else 1150 assert(!"Unknown standard command."); 1151 return (0); 1152 } 1153