geom_part.c revision 219416
1/*- 2 * Copyright (c) 2007, 2008 Marcel Moolenaar 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: head/sbin/geom/class/part/geom_part.c 219416 2011-03-08 22:01:47Z ae $"); 29 30#include <sys/stat.h> 31#include <sys/vtoc.h> 32 33#include <assert.h> 34#include <ctype.h> 35#include <err.h> 36#include <errno.h> 37#include <fcntl.h> 38#include <libgeom.h> 39#include <libutil.h> 40#include <paths.h> 41#include <signal.h> 42#include <stdint.h> 43#include <stdio.h> 44#include <stdlib.h> 45#include <limits.h> 46#include <inttypes.h> 47#include <string.h> 48#include <strings.h> 49#include <unistd.h> 50 51#include "core/geom.h" 52#include "misc/subr.h" 53 54#ifdef STATIC_GEOM_CLASSES 55#define PUBSYM(x) gpart_##x 56#else 57#define PUBSYM(x) x 58#endif 59 60uint32_t PUBSYM(lib_version) = G_LIB_VERSION; 61uint32_t PUBSYM(version) = 0; 62 63static char sstart[32]; 64static char ssize[32]; 65volatile sig_atomic_t undo_restore; 66 67#define GPART_AUTOFILL "*" 68#define GPART_FLAGS "C" 69 70#define GPART_PARAM_BOOTCODE "bootcode" 71#define GPART_PARAM_INDEX "index" 72#define GPART_PARAM_PARTCODE "partcode" 73 74static struct gclass *find_class(struct gmesh *, const char *); 75static struct ggeom * find_geom(struct gclass *, const char *); 76static const char *find_geomcfg(struct ggeom *, const char *); 77static const char *find_provcfg(struct gprovider *, const char *); 78static struct gprovider *find_provider(struct ggeom *, off_t); 79static const char *fmtsize(int64_t); 80static int gpart_autofill(struct gctl_req *); 81static int gpart_autofill_resize(struct gctl_req *); 82static void gpart_bootcode(struct gctl_req *, unsigned int); 83static void *gpart_bootfile_read(const char *, ssize_t *); 84static void gpart_issue(struct gctl_req *, unsigned int); 85static void gpart_show(struct gctl_req *, unsigned int); 86static void gpart_show_geom(struct ggeom *, const char *, int); 87static int gpart_show_hasopt(struct gctl_req *, const char *, const char *); 88static void gpart_write_partcode(struct ggeom *, int, void *, ssize_t); 89static void gpart_write_partcode_vtoc8(struct ggeom *, int, void *); 90static void gpart_print_error(const char *); 91static void gpart_backup(struct gctl_req *, unsigned int); 92static void gpart_restore(struct gctl_req *, unsigned int); 93 94struct g_command PUBSYM(class_commands)[] = { 95 { "add", 0, gpart_issue, { 96 { 'b', "start", GPART_AUTOFILL, G_TYPE_STRING }, 97 { 's', "size", GPART_AUTOFILL, G_TYPE_STRING }, 98 { 't', "type", NULL, G_TYPE_STRING }, 99 { 'i', GPART_PARAM_INDEX, G_VAL_OPTIONAL, G_TYPE_NUMBER }, 100 { 'l', "label", G_VAL_OPTIONAL, G_TYPE_STRING }, 101 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 102 G_OPT_SENTINEL }, 103 "[-b start] [-s size] -t type [-i index] [-l label] [-f flags] geom" 104 }, 105 { "backup", 0, gpart_backup, G_NULL_OPTS, 106 "geom" 107 }, 108 { "bootcode", 0, gpart_bootcode, { 109 { 'b', GPART_PARAM_BOOTCODE, G_VAL_OPTIONAL, G_TYPE_STRING }, 110 { 'p', GPART_PARAM_PARTCODE, G_VAL_OPTIONAL, G_TYPE_STRING }, 111 { 'i', GPART_PARAM_INDEX, G_VAL_OPTIONAL, G_TYPE_NUMBER }, 112 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 113 G_OPT_SENTINEL }, 114 "[-b bootcode] [-p partcode] [-i index] [-f flags] geom" 115 }, 116 { "commit", 0, gpart_issue, G_NULL_OPTS, 117 "geom" 118 }, 119 { "create", 0, gpart_issue, { 120 { 's', "scheme", NULL, G_TYPE_STRING }, 121 { 'n', "entries", G_VAL_OPTIONAL, G_TYPE_NUMBER }, 122 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 123 G_OPT_SENTINEL }, 124 "-s scheme [-n entries] [-f flags] provider" 125 }, 126 { "delete", 0, gpart_issue, { 127 { 'i', GPART_PARAM_INDEX, NULL, G_TYPE_NUMBER }, 128 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 129 G_OPT_SENTINEL }, 130 "-i index [-f flags] geom" 131 }, 132 { "destroy", 0, gpart_issue, { 133 { 'F', "force", NULL, G_TYPE_BOOL }, 134 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 135 G_OPT_SENTINEL }, 136 "[-F] [-f flags] geom" 137 }, 138 { "modify", 0, gpart_issue, { 139 { 'i', GPART_PARAM_INDEX, NULL, G_TYPE_NUMBER }, 140 { 'l', "label", G_VAL_OPTIONAL, G_TYPE_STRING }, 141 { 't', "type", G_VAL_OPTIONAL, G_TYPE_STRING }, 142 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 143 G_OPT_SENTINEL }, 144 "-i index [-l label] [-t type] [-f flags] geom" 145 }, 146 { "set", 0, gpart_issue, { 147 { 'a', "attrib", NULL, G_TYPE_STRING }, 148 { 'i', GPART_PARAM_INDEX, NULL, G_TYPE_NUMBER }, 149 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 150 G_OPT_SENTINEL }, 151 "-a attrib -i index [-f flags] geom" 152 }, 153 { "show", 0, gpart_show, { 154 { 'l', "show_label", NULL, G_TYPE_BOOL }, 155 { 'r', "show_rawtype", NULL, G_TYPE_BOOL }, 156 { 'p', "show_providers", NULL, G_TYPE_BOOL }, 157 G_OPT_SENTINEL }, 158 "[-lrp] [geom ...]" 159 }, 160 { "undo", 0, gpart_issue, G_NULL_OPTS, 161 "geom" 162 }, 163 { "unset", 0, gpart_issue, { 164 { 'a', "attrib", NULL, G_TYPE_STRING }, 165 { 'i', GPART_PARAM_INDEX, NULL, G_TYPE_NUMBER }, 166 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 167 G_OPT_SENTINEL }, 168 "-a attrib -i index [-f flags] geom" 169 }, 170 { "resize", 0, gpart_issue, { 171 { 's', "size", GPART_AUTOFILL, G_TYPE_STRING }, 172 { 'i', GPART_PARAM_INDEX, NULL, G_TYPE_NUMBER }, 173 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 174 G_OPT_SENTINEL }, 175 "[-s size] -i index [-f flags] geom" 176 }, 177 { "restore", 0, gpart_restore, { 178 { 'F', "force", NULL, G_TYPE_BOOL }, 179 { 'l', "restore_labels", NULL, G_TYPE_BOOL }, 180 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 181 G_OPT_SENTINEL }, 182 "[-lF] [-f flags] provider [...]" 183 }, 184 { "recover", 0, gpart_issue, { 185 { 'f', "flags", GPART_FLAGS, G_TYPE_STRING }, 186 G_OPT_SENTINEL }, 187 "[-f flags] geom" 188 }, 189 G_CMD_SENTINEL 190}; 191 192static struct gclass * 193find_class(struct gmesh *mesh, const char *name) 194{ 195 struct gclass *classp; 196 197 LIST_FOREACH(classp, &mesh->lg_class, lg_class) { 198 if (strcmp(classp->lg_name, name) == 0) 199 return (classp); 200 } 201 return (NULL); 202} 203 204static struct ggeom * 205find_geom(struct gclass *classp, const char *name) 206{ 207 struct ggeom *gp; 208 209 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 210 name += sizeof(_PATH_DEV) - 1; 211 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 212 if (strcmp(gp->lg_name, name) == 0) 213 return (gp); 214 } 215 return (NULL); 216} 217 218static const char * 219find_geomcfg(struct ggeom *gp, const char *cfg) 220{ 221 struct gconfig *gc; 222 223 LIST_FOREACH(gc, &gp->lg_config, lg_config) { 224 if (!strcmp(gc->lg_name, cfg)) 225 return (gc->lg_val); 226 } 227 return (NULL); 228} 229 230static const char * 231find_provcfg(struct gprovider *pp, const char *cfg) 232{ 233 struct gconfig *gc; 234 235 LIST_FOREACH(gc, &pp->lg_config, lg_config) { 236 if (!strcmp(gc->lg_name, cfg)) 237 return (gc->lg_val); 238 } 239 return (NULL); 240} 241 242static struct gprovider * 243find_provider(struct ggeom *gp, off_t minsector) 244{ 245 struct gprovider *pp, *bestpp; 246 const char *s; 247 off_t sector, bestsector; 248 249 bestpp = NULL; 250 bestsector = 0; 251 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 252 s = find_provcfg(pp, "start"); 253 if (s == NULL) { 254 s = find_provcfg(pp, "offset"); 255 sector = 256 (off_t)strtoimax(s, NULL, 0) / pp->lg_sectorsize; 257 } else 258 sector = (off_t)strtoimax(s, NULL, 0); 259 260 if (sector < minsector) 261 continue; 262 if (bestpp != NULL && sector >= bestsector) 263 continue; 264 265 bestpp = pp; 266 bestsector = sector; 267 } 268 return (bestpp); 269} 270 271static const char * 272fmtsize(int64_t rawsz) 273{ 274 static char buf[5]; 275 276 humanize_number(buf, sizeof(buf), rawsz, "", HN_AUTOSCALE, 277 HN_B | HN_NOSPACE | HN_DECIMAL); 278 return (buf); 279} 280 281static const char * 282fmtattrib(struct gprovider *pp) 283{ 284 static char buf[128]; 285 struct gconfig *gc; 286 u_int idx; 287 288 buf[0] = '\0'; 289 idx = 0; 290 LIST_FOREACH(gc, &pp->lg_config, lg_config) { 291 if (strcmp(gc->lg_name, "attrib") != 0) 292 continue; 293 idx += snprintf(buf + idx, sizeof(buf) - idx, "%s%s", 294 (idx == 0) ? " [" : ",", gc->lg_val); 295 } 296 if (idx > 0) 297 snprintf(buf + idx, sizeof(buf) - idx, "] "); 298 return (buf); 299} 300 301static int 302gpart_autofill_resize(struct gctl_req *req) 303{ 304 struct gmesh mesh; 305 struct gclass *cp; 306 struct ggeom *gp; 307 struct gprovider *pp; 308 off_t last, size, start, new_size; 309 off_t lba, new_lba; 310 const char *s; 311 int error, idx; 312 313 idx = (int)gctl_get_intmax(req, GPART_PARAM_INDEX); 314 if (idx < 1) 315 errx(EXIT_FAILURE, "invalid partition index"); 316 317 error = geom_gettree(&mesh); 318 if (error) 319 return (error); 320 s = gctl_get_ascii(req, "class"); 321 if (s == NULL) 322 abort(); 323 cp = find_class(&mesh, s); 324 if (cp == NULL) 325 errx(EXIT_FAILURE, "Class %s not found.", s); 326 s = gctl_get_ascii(req, "arg0"); 327 if (s == NULL) 328 abort(); 329 gp = find_geom(cp, s); 330 if (gp == NULL) 331 errx(EXIT_FAILURE, "No such geom: %s.", s); 332 pp = LIST_FIRST(&gp->lg_consumer)->lg_provider; 333 if (pp == NULL) 334 errx(EXIT_FAILURE, "Provider for geom %s not found.", s); 335 336 s = gctl_get_ascii(req, "size"); 337 if (*s == '*') 338 new_size = 0; 339 else { 340 error = g_parse_lba(s, pp->lg_sectorsize, &new_size); 341 if (error) 342 errc(EXIT_FAILURE, error, "Invalid size param"); 343 /* no autofill necessary. */ 344 goto done; 345 } 346 347 last = (off_t)strtoimax(find_geomcfg(gp, "last"), NULL, 0); 348 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 349 s = find_provcfg(pp, "index"); 350 if (s == NULL) 351 continue; 352 if (atoi(s) == idx) 353 break; 354 } 355 if (pp == NULL) 356 errx(EXIT_FAILURE, "invalid partition index"); 357 358 s = find_provcfg(pp, "start"); 359 if (s == NULL) { 360 s = find_provcfg(pp, "offset"); 361 start = (off_t)strtoimax(s, NULL, 0) / pp->lg_sectorsize; 362 } else 363 start = (off_t)strtoimax(s, NULL, 0); 364 s = find_provcfg(pp, "end"); 365 if (s == NULL) { 366 s = find_provcfg(pp, "length"); 367 lba = start + 368 (off_t)strtoimax(s, NULL, 0) / pp->lg_sectorsize; 369 } else 370 lba = (off_t)strtoimax(s, NULL, 0) + 1; 371 372 if (lba > last) { 373 geom_deletetree(&mesh); 374 return (ENOSPC); 375 } 376 size = lba - start; 377 pp = find_provider(gp, lba); 378 if (pp == NULL) 379 new_size = last - start + 1; 380 else { 381 s = find_provcfg(pp, "start"); 382 if (s == NULL) { 383 s = find_provcfg(pp, "offset"); 384 new_lba = 385 (off_t)strtoimax(s, NULL, 0) / pp->lg_sectorsize; 386 } else 387 new_lba = (off_t)strtoimax(s, NULL, 0); 388 /* 389 * Is there any free space between current and 390 * next providers? 391 */ 392 if (new_lba > lba) 393 new_size = new_lba - start; 394 else { 395 geom_deletetree(&mesh); 396 return (ENOSPC); 397 } 398 } 399done: 400 snprintf(ssize, sizeof(ssize), "%jd", (intmax_t)new_size); 401 gctl_change_param(req, "size", -1, ssize); 402 geom_deletetree(&mesh); 403 return (0); 404} 405 406static int 407gpart_autofill(struct gctl_req *req) 408{ 409 struct gmesh mesh; 410 struct gclass *cp; 411 struct ggeom *gp; 412 struct gprovider *pp; 413 off_t first, last; 414 off_t size, start; 415 off_t lba, len; 416 uintmax_t grade; 417 const char *s; 418 int error, has_size, has_start; 419 420 s = gctl_get_ascii(req, "verb"); 421 if (strcmp(s, "resize") == 0) 422 return gpart_autofill_resize(req); 423 if (strcmp(s, "add") != 0) 424 return (0); 425 426 error = geom_gettree(&mesh); 427 if (error) 428 return (error); 429 s = gctl_get_ascii(req, "class"); 430 if (s == NULL) 431 abort(); 432 cp = find_class(&mesh, s); 433 if (cp == NULL) 434 errx(EXIT_FAILURE, "Class %s not found.", s); 435 s = gctl_get_ascii(req, "arg0"); 436 if (s == NULL) 437 abort(); 438 gp = find_geom(cp, s); 439 if (gp == NULL) 440 errx(EXIT_FAILURE, "No such geom: %s.", s); 441 pp = LIST_FIRST(&gp->lg_consumer)->lg_provider; 442 if (pp == NULL) 443 errx(EXIT_FAILURE, "Provider for geom %s not found.", s); 444 445 s = gctl_get_ascii(req, "size"); 446 has_size = (*s == '*') ? 0 : 1; 447 size = 0; 448 if (has_size) { 449 error = g_parse_lba(s, pp->lg_sectorsize, &size); 450 if (error) 451 errc(EXIT_FAILURE, error, "Invalid size param"); 452 } 453 454 s = gctl_get_ascii(req, "start"); 455 has_start = (*s == '*') ? 0 : 1; 456 start = 0ULL; 457 if (has_start) { 458 error = g_parse_lba(s, pp->lg_sectorsize, &start); 459 if (error) 460 errc(EXIT_FAILURE, error, "Invalid start param"); 461 } 462 463 /* No autofill necessary. */ 464 if (has_size && has_start) 465 goto done; 466 467 first = (off_t)strtoimax(find_geomcfg(gp, "first"), NULL, 0); 468 last = (off_t)strtoimax(find_geomcfg(gp, "last"), NULL, 0); 469 grade = ~0ULL; 470 while ((pp = find_provider(gp, first)) != NULL) { 471 s = find_provcfg(pp, "start"); 472 if (s == NULL) { 473 s = find_provcfg(pp, "offset"); 474 lba = (off_t)strtoimax(s, NULL, 0) / pp->lg_sectorsize; 475 } else 476 lba = (off_t)strtoimax(s, NULL, 0); 477 478 if (first < lba) { 479 /* Free space [first, lba> */ 480 len = lba - first; 481 if (has_size) { 482 if (len >= size && 483 (uintmax_t)(len - size) < grade) { 484 start = first; 485 grade = len - size; 486 } 487 } else if (has_start) { 488 if (start >= first && start < lba) { 489 size = lba - start; 490 grade = start - first; 491 } 492 } else { 493 if (grade == ~0ULL || len > size) { 494 start = first; 495 size = len; 496 grade = 0; 497 } 498 } 499 } 500 501 s = find_provcfg(pp, "end"); 502 if (s == NULL) { 503 s = find_provcfg(pp, "length"); 504 first = lba + 505 (off_t)strtoimax(s, NULL, 0) / pp->lg_sectorsize; 506 } else 507 first = (off_t)strtoimax(s, NULL, 0) + 1; 508 } 509 if (first <= last) { 510 /* Free space [first-last] */ 511 len = last - first + 1; 512 if (has_size) { 513 if (len >= size && 514 (uintmax_t)(len - size) < grade) { 515 start = first; 516 grade = len - size; 517 } 518 } else if (has_start) { 519 if (start >= first && start <= last) { 520 size = last - start + 1; 521 grade = start - first; 522 } 523 } else { 524 if (grade == ~0ULL || len > size) { 525 start = first; 526 size = len; 527 grade = 0; 528 } 529 } 530 } 531 532 if (grade == ~0ULL) { 533 geom_deletetree(&mesh); 534 return (ENOSPC); 535 } 536 537done: 538 snprintf(ssize, sizeof(ssize), "%jd", (intmax_t)size); 539 gctl_change_param(req, "size", -1, ssize); 540 snprintf(sstart, sizeof(sstart), "%jd", (intmax_t)start); 541 gctl_change_param(req, "start", -1, sstart); 542 geom_deletetree(&mesh); 543 return (0); 544} 545 546static void 547gpart_show_geom(struct ggeom *gp, const char *element, int show_providers) 548{ 549 struct gprovider *pp; 550 const char *s, *scheme; 551 off_t first, last, sector, end; 552 off_t length, secsz; 553 int idx, wblocks, wname, wmax; 554 555 scheme = find_geomcfg(gp, "scheme"); 556 s = find_geomcfg(gp, "first"); 557 first = (off_t)strtoimax(s, NULL, 0); 558 s = find_geomcfg(gp, "last"); 559 last = (off_t)strtoimax(s, NULL, 0); 560 wblocks = strlen(s); 561 s = find_geomcfg(gp, "state"); 562 if (s != NULL && *s != 'C') 563 s = NULL; 564 wmax = strlen(gp->lg_name); 565 if (show_providers) { 566 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 567 wname = strlen(pp->lg_name); 568 if (wname > wmax) 569 wmax = wname; 570 } 571 } 572 wname = wmax; 573 pp = LIST_FIRST(&gp->lg_consumer)->lg_provider; 574 secsz = pp->lg_sectorsize; 575 printf("=>%*jd %*jd %*s %s (%s)%s\n", 576 wblocks, (intmax_t)first, wblocks, (intmax_t)(last - first + 1), 577 wname, gp->lg_name, 578 scheme, fmtsize(pp->lg_mediasize), 579 s ? " [CORRUPT]": ""); 580 581 while ((pp = find_provider(gp, first)) != NULL) { 582 s = find_provcfg(pp, "start"); 583 if (s == NULL) { 584 s = find_provcfg(pp, "offset"); 585 sector = (off_t)strtoimax(s, NULL, 0) / secsz; 586 } else 587 sector = (off_t)strtoimax(s, NULL, 0); 588 589 s = find_provcfg(pp, "end"); 590 if (s == NULL) { 591 s = find_provcfg(pp, "length"); 592 length = (off_t)strtoimax(s, NULL, 0) / secsz; 593 end = sector + length - 1; 594 } else { 595 end = (off_t)strtoimax(s, NULL, 0); 596 length = end - sector + 1; 597 } 598 s = find_provcfg(pp, "index"); 599 idx = atoi(s); 600 if (first < sector) { 601 printf(" %*jd %*jd %*s - free - (%s)\n", 602 wblocks, (intmax_t)first, wblocks, 603 (intmax_t)(sector - first), wname, "", 604 fmtsize((sector - first) * secsz)); 605 } 606 if (show_providers) { 607 printf(" %*jd %*jd %*s %s %s (%s)\n", 608 wblocks, (intmax_t)sector, wblocks, 609 (intmax_t)length, wname, pp->lg_name, 610 find_provcfg(pp, element), fmtattrib(pp), 611 fmtsize(pp->lg_mediasize)); 612 } else 613 printf(" %*jd %*jd %*d %s %s (%s)\n", 614 wblocks, (intmax_t)sector, wblocks, 615 (intmax_t)length, wname, idx, 616 find_provcfg(pp, element), fmtattrib(pp), 617 fmtsize(pp->lg_mediasize)); 618 first = end + 1; 619 } 620 if (first <= last) { 621 length = last - first + 1; 622 printf(" %*jd %*jd %*s - free - (%s)\n", 623 wblocks, (intmax_t)first, wblocks, (intmax_t)length, 624 wname, "", 625 fmtsize(length * secsz)); 626 } 627 printf("\n"); 628} 629 630static int 631gpart_show_hasopt(struct gctl_req *req, const char *opt, const char *elt) 632{ 633 634 if (!gctl_get_int(req, "%s", opt)) 635 return (0); 636 637 if (elt != NULL) 638 errx(EXIT_FAILURE, "-l and -r are mutually exclusive"); 639 640 return (1); 641} 642 643static void 644gpart_show(struct gctl_req *req, unsigned int fl __unused) 645{ 646 struct gmesh mesh; 647 struct gclass *classp; 648 struct ggeom *gp; 649 const char *element, *name; 650 int error, i, nargs, show_providers; 651 652 element = NULL; 653 if (gpart_show_hasopt(req, "show_label", element)) 654 element = "label"; 655 if (gpart_show_hasopt(req, "show_rawtype", element)) 656 element = "rawtype"; 657 if (element == NULL) 658 element = "type"; 659 660 name = gctl_get_ascii(req, "class"); 661 if (name == NULL) 662 abort(); 663 error = geom_gettree(&mesh); 664 if (error != 0) 665 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 666 classp = find_class(&mesh, name); 667 if (classp == NULL) { 668 geom_deletetree(&mesh); 669 errx(EXIT_FAILURE, "Class %s not found.", name); 670 } 671 show_providers = gctl_get_int(req, "show_providers"); 672 nargs = gctl_get_int(req, "nargs"); 673 if (nargs > 0) { 674 for (i = 0; i < nargs; i++) { 675 name = gctl_get_ascii(req, "arg%d", i); 676 gp = find_geom(classp, name); 677 if (gp != NULL) 678 gpart_show_geom(gp, element, show_providers); 679 else 680 errx(EXIT_FAILURE, "No such geom: %s.", name); 681 } 682 } else { 683 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) { 684 gpart_show_geom(gp, element, show_providers); 685 } 686 } 687 geom_deletetree(&mesh); 688} 689 690static void 691gpart_backup(struct gctl_req *req, unsigned int fl __unused) 692{ 693 struct gmesh mesh; 694 struct gclass *classp; 695 struct gprovider *pp; 696 struct ggeom *gp; 697 const char *s, *scheme; 698 off_t sector, end; 699 off_t length, secsz; 700 int error, i, windex, wblocks, wtype; 701 702 if (gctl_get_int(req, "nargs") != 1) 703 errx(EXIT_FAILURE, "Invalid number of arguments."); 704 error = geom_gettree(&mesh); 705 if (error != 0) 706 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 707 s = gctl_get_ascii(req, "class"); 708 if (s == NULL) 709 abort(); 710 classp = find_class(&mesh, s); 711 if (classp == NULL) { 712 geom_deletetree(&mesh); 713 errx(EXIT_FAILURE, "Class %s not found.", s); 714 } 715 s = gctl_get_ascii(req, "arg0"); 716 if (s == NULL) 717 abort(); 718 gp = find_geom(classp, s); 719 if (gp == NULL) 720 errx(EXIT_FAILURE, "No such geom: %s.", s); 721 scheme = find_geomcfg(gp, "scheme"); 722 if (scheme == NULL) 723 abort(); 724 pp = LIST_FIRST(&gp->lg_consumer)->lg_provider; 725 secsz = pp->lg_sectorsize; 726 s = find_geomcfg(gp, "last"); 727 wblocks = strlen(s); 728 wtype = 0; 729 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 730 s = find_provcfg(pp, "type"); 731 i = strlen(s); 732 if (i > wtype) 733 wtype = i; 734 } 735 s = find_geomcfg(gp, "entries"); 736 windex = strlen(s); 737 printf("%s %s\n", scheme, s); 738 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 739 s = find_provcfg(pp, "start"); 740 if (s == NULL) { 741 s = find_provcfg(pp, "offset"); 742 sector = (off_t)strtoimax(s, NULL, 0) / secsz; 743 } else 744 sector = (off_t)strtoimax(s, NULL, 0); 745 746 s = find_provcfg(pp, "end"); 747 if (s == NULL) { 748 s = find_provcfg(pp, "length"); 749 length = (off_t)strtoimax(s, NULL, 0) / secsz; 750 } else { 751 end = (off_t)strtoimax(s, NULL, 0); 752 length = end - sector + 1; 753 } 754 s = find_provcfg(pp, "label"); 755 printf("%-*s %*s %*jd %*jd %s %s\n", 756 windex, find_provcfg(pp, "index"), 757 wtype, find_provcfg(pp, "type"), 758 wblocks, (intmax_t)sector, 759 wblocks, (intmax_t)length, 760 (s != NULL) ? s: "", fmtattrib(pp)); 761 } 762 geom_deletetree(&mesh); 763} 764 765static int 766skip_line(const char *p) 767{ 768 769 while (*p != '\0') { 770 if (*p == '#') 771 return (1); 772 if (isspace(*p) == 0) 773 return (0); 774 p++; 775 } 776 return (1); 777} 778 779static void 780gpart_sighndl(int sig __unused) 781{ 782 undo_restore = 1; 783} 784 785static void 786gpart_restore(struct gctl_req *req, unsigned int fl __unused) 787{ 788 struct gmesh mesh; 789 struct gclass *classp; 790 struct gctl_req *r; 791 struct ggeom *gp; 792 struct sigaction si_sa; 793 const char *s, *flags, *errstr, *label; 794 char **ap, *argv[6], line[BUFSIZ], *pline; 795 int error, forced, i, l, nargs, created, rl; 796 intmax_t n; 797 798 nargs = gctl_get_int(req, "nargs"); 799 if (nargs < 1) 800 errx(EXIT_FAILURE, "Invalid number of arguments."); 801 802 forced = gctl_get_int(req, "force"); 803 flags = gctl_get_ascii(req, "flags"); 804 rl = gctl_get_int(req, "restore_labels"); 805 s = gctl_get_ascii(req, "class"); 806 if (s == NULL) 807 abort(); 808 error = geom_gettree(&mesh); 809 if (error != 0) 810 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 811 classp = find_class(&mesh, s); 812 if (classp == NULL) { 813 geom_deletetree(&mesh); 814 errx(EXIT_FAILURE, "Class %s not found.", s); 815 } 816 817 sigemptyset(&si_sa.sa_mask); 818 si_sa.sa_flags = 0; 819 si_sa.sa_handler = gpart_sighndl; 820 if (sigaction(SIGINT, &si_sa, 0) == -1) 821 err(EXIT_FAILURE, "sigaction SIGINT"); 822 823 if (forced) { 824 /* destroy existent partition table before restore */ 825 for (i = 0; i < nargs; i++) { 826 s = gctl_get_ascii(req, "arg%d", i); 827 gp = find_geom(classp, s); 828 if (gp != NULL) { 829 r = gctl_get_handle(); 830 gctl_ro_param(r, "class", -1, 831 classp->lg_name); 832 gctl_ro_param(r, "verb", -1, "destroy"); 833 gctl_ro_param(r, "flags", -1, "restore"); 834 gctl_ro_param(r, "force", sizeof(forced), 835 &forced); 836 gctl_ro_param(r, "arg0", -1, s); 837 errstr = gctl_issue(r); 838 if (errstr != NULL && errstr[0] != '\0') { 839 gpart_print_error(errstr); 840 gctl_free(r); 841 goto backout; 842 } 843 gctl_free(r); 844 } 845 } 846 } 847 created = 0; 848 while (undo_restore == 0 && 849 fgets(line, sizeof(line) - 1, stdin) != NULL) { 850 /* Format of backup entries: 851 * <scheme name> <number of entries> 852 * <index> <type> <start> <size> [label] ['['attrib[,attrib]']'] 853 */ 854 pline = (char *)line; 855 pline[strlen(line) - 1] = 0; 856 if (skip_line(pline)) 857 continue; 858 for (ap = argv; 859 (*ap = strsep(&pline, " \t")) != NULL;) 860 if (**ap != '\0' && ++ap >= &argv[6]) 861 break; 862 l = ap - &argv[0]; 863 label = pline = NULL; 864 if (l == 1 || l == 2) { /* create table */ 865 if (created) 866 errx(EXIT_FAILURE, "Incorrect backup format."); 867 if (l == 2) 868 n = strtoimax(argv[1], NULL, 0); 869 for (i = 0; i < nargs; i++) { 870 s = gctl_get_ascii(req, "arg%d", i); 871 r = gctl_get_handle(); 872 gctl_ro_param(r, "class", -1, 873 classp->lg_name); 874 gctl_ro_param(r, "verb", -1, "create"); 875 gctl_ro_param(r, "scheme", -1, argv[0]); 876 if (l == 2) 877 gctl_ro_param(r, "entries", 878 sizeof(n), &n); 879 gctl_ro_param(r, "flags", -1, "restore"); 880 gctl_ro_param(r, "arg0", -1, s); 881 errstr = gctl_issue(r); 882 if (errstr != NULL && errstr[0] != '\0') { 883 gpart_print_error(errstr); 884 gctl_free(r); 885 goto backout; 886 } 887 gctl_free(r); 888 } 889 created = 1; 890 continue; 891 } else if (l < 4 || created == 0) 892 errx(EXIT_FAILURE, "Incorrect backup format."); 893 else if (l == 5) { 894 if (strchr(argv[4], '[') == NULL) 895 label = argv[4]; 896 else 897 pline = argv[4]; 898 } else if (l == 6) { 899 label = argv[4]; 900 pline = argv[5]; 901 } 902 /* Add partitions to each table */ 903 for (i = 0; i < nargs; i++) { 904 s = gctl_get_ascii(req, "arg%d", i); 905 r = gctl_get_handle(); 906 n = strtoimax(argv[0], NULL, 0); 907 gctl_ro_param(r, "class", -1, classp->lg_name); 908 gctl_ro_param(r, "verb", -1, "add"); 909 gctl_ro_param(r, "flags", -1, "restore"); 910 gctl_ro_param(r, GPART_PARAM_INDEX, sizeof(n), &n); 911 gctl_ro_param(r, "type", -1, argv[1]); 912 gctl_ro_param(r, "start", -1, argv[2]); 913 gctl_ro_param(r, "size", -1, argv[3]); 914 if (rl != 0 && label != NULL) 915 gctl_ro_param(r, "label", -1, argv[4]); 916 gctl_ro_param(r, "arg0", -1, s); 917 error = gpart_autofill(r); 918 if (error != 0) 919 errc(EXIT_FAILURE, error, "autofill"); 920 errstr = gctl_issue(r); 921 if (errstr != NULL && errstr[0] != '\0') { 922 gpart_print_error(errstr); 923 gctl_free(r); 924 goto backout; 925 } 926 gctl_free(r); 927 } 928 if (pline == NULL || *pline != '[') 929 continue; 930 /* set attributes */ 931 pline++; 932 for (ap = argv; 933 (*ap = strsep(&pline, ",]")) != NULL;) 934 if (**ap != '\0' && ++ap >= &argv[6]) 935 break; 936 for (i = 0; i < nargs; i++) { 937 l = ap - &argv[0]; 938 s = gctl_get_ascii(req, "arg%d", i); 939 while (l > 0) { 940 r = gctl_get_handle(); 941 gctl_ro_param(r, "class", -1, classp->lg_name); 942 gctl_ro_param(r, "verb", -1, "set"); 943 gctl_ro_param(r, "flags", -1, "restore"); 944 gctl_ro_param(r, GPART_PARAM_INDEX, 945 sizeof(n), &n); 946 gctl_ro_param(r, "attrib", -1, argv[--l]); 947 gctl_ro_param(r, "arg0", -1, s); 948 errstr = gctl_issue(r); 949 if (errstr != NULL && errstr[0] != '\0') { 950 gpart_print_error(errstr); 951 gctl_free(r); 952 goto backout; 953 } 954 gctl_free(r); 955 } 956 } 957 } 958 if (undo_restore) 959 goto backout; 960 /* commit changes if needed */ 961 if (strchr(flags, 'C') != NULL) { 962 for (i = 0; i < nargs; i++) { 963 s = gctl_get_ascii(req, "arg%d", i); 964 r = gctl_get_handle(); 965 gctl_ro_param(r, "class", -1, classp->lg_name); 966 gctl_ro_param(r, "verb", -1, "commit"); 967 gctl_ro_param(r, "arg0", -1, s); 968 errstr = gctl_issue(r); 969 if (errstr != NULL && errstr[0] != '\0') { 970 gpart_print_error(errstr); 971 gctl_free(r); 972 goto backout; 973 } 974 gctl_free(r); 975 } 976 } 977 gctl_free(req); 978 geom_deletetree(&mesh); 979 exit(EXIT_SUCCESS); 980 981backout: 982 for (i = 0; i < nargs; i++) { 983 s = gctl_get_ascii(req, "arg%d", i); 984 r = gctl_get_handle(); 985 gctl_ro_param(r, "class", -1, classp->lg_name); 986 gctl_ro_param(r, "verb", -1, "undo"); 987 gctl_ro_param(r, "arg0", -1, s); 988 gctl_issue(r); 989 gctl_free(r); 990 } 991 gctl_free(req); 992 geom_deletetree(&mesh); 993 exit(EXIT_FAILURE); 994} 995 996static void * 997gpart_bootfile_read(const char *bootfile, ssize_t *size) 998{ 999 struct stat sb; 1000 void *code; 1001 int fd; 1002 1003 if (stat(bootfile, &sb) == -1) 1004 err(EXIT_FAILURE, "%s", bootfile); 1005 if (!S_ISREG(sb.st_mode)) 1006 errx(EXIT_FAILURE, "%s: not a regular file", bootfile); 1007 if (sb.st_size == 0) 1008 errx(EXIT_FAILURE, "%s: empty file", bootfile); 1009 if (*size > 0 && sb.st_size > *size) 1010 errx(EXIT_FAILURE, "%s: file too big (%zu limit)", bootfile, 1011 *size); 1012 1013 *size = sb.st_size; 1014 1015 fd = open(bootfile, O_RDONLY); 1016 if (fd == -1) 1017 err(EXIT_FAILURE, "%s", bootfile); 1018 code = malloc(*size); 1019 if (code == NULL) 1020 err(EXIT_FAILURE, NULL); 1021 if (read(fd, code, *size) != *size) 1022 err(EXIT_FAILURE, "%s", bootfile); 1023 close(fd); 1024 1025 return (code); 1026} 1027 1028static void 1029gpart_write_partcode(struct ggeom *gp, int idx, void *code, ssize_t size) 1030{ 1031 char dsf[128]; 1032 struct gprovider *pp; 1033 const char *s; 1034 char *buf; 1035 off_t bsize; 1036 int fd; 1037 1038 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 1039 s = find_provcfg(pp, "index"); 1040 if (s == NULL) 1041 continue; 1042 if (atoi(s) == idx) 1043 break; 1044 } 1045 1046 if (pp != NULL) { 1047 snprintf(dsf, sizeof(dsf), "/dev/%s", pp->lg_name); 1048 fd = open(dsf, O_WRONLY); 1049 if (fd == -1) 1050 err(EXIT_FAILURE, "%s", dsf); 1051 if (lseek(fd, size, SEEK_SET) != size) 1052 errx(EXIT_FAILURE, "%s: not enough space", dsf); 1053 if (lseek(fd, 0, SEEK_SET) != 0) 1054 err(EXIT_FAILURE, "%s", dsf); 1055 1056 /* 1057 * When writing to a disk device, the write must be 1058 * sector aligned and not write to any partial sectors, 1059 * so round up the buffer size to the next sector and zero it. 1060 */ 1061 bsize = (size + pp->lg_sectorsize - 1) / 1062 pp->lg_sectorsize * pp->lg_sectorsize; 1063 buf = calloc(1, bsize); 1064 if (buf == NULL) 1065 err(EXIT_FAILURE, "%s", dsf); 1066 bcopy(code, buf, size); 1067 if (write(fd, buf, bsize) != bsize) 1068 err(EXIT_FAILURE, "%s", dsf); 1069 free(buf); 1070 close(fd); 1071 } else 1072 errx(EXIT_FAILURE, "invalid partition index"); 1073} 1074 1075static void 1076gpart_write_partcode_vtoc8(struct ggeom *gp, int idx, void *code) 1077{ 1078 char dsf[128]; 1079 struct gprovider *pp; 1080 const char *s; 1081 int installed, fd; 1082 1083 installed = 0; 1084 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) { 1085 s = find_provcfg(pp, "index"); 1086 if (s == NULL) 1087 continue; 1088 if (idx != 0 && atoi(s) != idx) 1089 continue; 1090 snprintf(dsf, sizeof(dsf), "/dev/%s", pp->lg_name); 1091 if (pp->lg_sectorsize != sizeof(struct vtoc8)) 1092 errx(EXIT_FAILURE, "%s: unexpected sector " 1093 "size (%d)\n", dsf, pp->lg_sectorsize); 1094 fd = open(dsf, O_WRONLY); 1095 if (fd == -1) 1096 err(EXIT_FAILURE, "%s", dsf); 1097 if (lseek(fd, VTOC_BOOTSIZE, SEEK_SET) != VTOC_BOOTSIZE) 1098 continue; 1099 /* 1100 * We ignore the first VTOC_BOOTSIZE bytes of boot code in 1101 * order to avoid overwriting the label. 1102 */ 1103 if (lseek(fd, sizeof(struct vtoc8), SEEK_SET) != 1104 sizeof(struct vtoc8)) 1105 err(EXIT_FAILURE, "%s", dsf); 1106 if (write(fd, (caddr_t)code + sizeof(struct vtoc8), 1107 VTOC_BOOTSIZE - sizeof(struct vtoc8)) != VTOC_BOOTSIZE - 1108 sizeof(struct vtoc8)) 1109 err(EXIT_FAILURE, "%s", dsf); 1110 installed++; 1111 close(fd); 1112 if (idx != 0 && atoi(s) == idx) 1113 break; 1114 } 1115 if (installed == 0) 1116 errx(EXIT_FAILURE, "%s: no partitions", gp->lg_name); 1117} 1118 1119static void 1120gpart_bootcode(struct gctl_req *req, unsigned int fl) 1121{ 1122 struct gmesh mesh; 1123 struct gclass *classp; 1124 struct ggeom *gp; 1125 const char *s; 1126 void *bootcode, *partcode; 1127 size_t bootsize, partsize; 1128 int error, idx, vtoc8; 1129 1130 if (gctl_has_param(req, GPART_PARAM_BOOTCODE)) { 1131 s = gctl_get_ascii(req, GPART_PARAM_BOOTCODE); 1132 bootsize = 800 * 1024; /* Arbitrary limit. */ 1133 bootcode = gpart_bootfile_read(s, &bootsize); 1134 error = gctl_change_param(req, GPART_PARAM_BOOTCODE, bootsize, 1135 bootcode); 1136 if (error) 1137 errc(EXIT_FAILURE, error, "internal error"); 1138 } else { 1139 bootcode = NULL; 1140 bootsize = 0; 1141 } 1142 1143 s = gctl_get_ascii(req, "class"); 1144 if (s == NULL) 1145 abort(); 1146 error = geom_gettree(&mesh); 1147 if (error != 0) 1148 errc(EXIT_FAILURE, error, "Cannot get GEOM tree"); 1149 classp = find_class(&mesh, s); 1150 if (classp == NULL) { 1151 geom_deletetree(&mesh); 1152 errx(EXIT_FAILURE, "Class %s not found.", s); 1153 } 1154 if (gctl_get_int(req, "nargs") != 1) 1155 errx(EXIT_FAILURE, "Invalid number of arguments."); 1156 s = gctl_get_ascii(req, "arg0"); 1157 if (s == NULL) 1158 abort(); 1159 gp = find_geom(classp, s); 1160 if (gp == NULL) 1161 errx(EXIT_FAILURE, "No such geom: %s.", s); 1162 s = find_geomcfg(gp, "scheme"); 1163 vtoc8 = 0; 1164 if (strcmp(s, "VTOC8") == 0) 1165 vtoc8 = 1; 1166 1167 if (gctl_has_param(req, GPART_PARAM_PARTCODE)) { 1168 s = gctl_get_ascii(req, GPART_PARAM_PARTCODE); 1169 partsize = vtoc8 != 0 ? VTOC_BOOTSIZE : bootsize * 1024; 1170 partcode = gpart_bootfile_read(s, &partsize); 1171 error = gctl_delete_param(req, GPART_PARAM_PARTCODE); 1172 if (error) 1173 errc(EXIT_FAILURE, error, "internal error"); 1174 } else { 1175 partcode = NULL; 1176 partsize = 0; 1177 } 1178 1179 if (gctl_has_param(req, GPART_PARAM_INDEX)) { 1180 if (partcode == NULL) 1181 errx(EXIT_FAILURE, "-i is only valid with -p"); 1182 idx = (int)gctl_get_intmax(req, GPART_PARAM_INDEX); 1183 if (idx < 1) 1184 errx(EXIT_FAILURE, "invalid partition index"); 1185 error = gctl_delete_param(req, GPART_PARAM_INDEX); 1186 if (error) 1187 errc(EXIT_FAILURE, error, "internal error"); 1188 } else 1189 idx = 0; 1190 1191 if (partcode != NULL) { 1192 if (vtoc8 == 0) { 1193 if (idx == 0) 1194 errx(EXIT_FAILURE, "missing -i option"); 1195 gpart_write_partcode(gp, idx, partcode, partsize); 1196 } else 1197 gpart_write_partcode_vtoc8(gp, idx, partcode); 1198 } else 1199 if (bootcode == NULL) 1200 errx(EXIT_FAILURE, "no -b nor -p"); 1201 1202 if (bootcode != NULL) 1203 gpart_issue(req, fl); 1204 1205 geom_deletetree(&mesh); 1206} 1207 1208static void 1209gpart_print_error(const char *errstr) 1210{ 1211 char *errmsg; 1212 int error; 1213 1214 error = strtol(errstr, &errmsg, 0); 1215 if (errmsg != errstr) { 1216 while (errmsg[0] == ' ') 1217 errmsg++; 1218 if (errmsg[0] != '\0') 1219 warnc(error, "%s", errmsg); 1220 else 1221 warnc(error, NULL); 1222 } else 1223 warnx("%s", errmsg); 1224} 1225 1226static void 1227gpart_issue(struct gctl_req *req, unsigned int fl __unused) 1228{ 1229 char buf[4096]; 1230 const char *errstr; 1231 int error, status; 1232 1233 if (gctl_get_int(req, "nargs") != 1) 1234 errx(EXIT_FAILURE, "Invalid number of arguments."); 1235 (void)gctl_delete_param(req, "nargs"); 1236 1237 /* autofill parameters (if applicable). */ 1238 error = gpart_autofill(req); 1239 if (error) { 1240 warnc(error, "autofill"); 1241 status = EXIT_FAILURE; 1242 goto done; 1243 } 1244 1245 bzero(buf, sizeof(buf)); 1246 gctl_rw_param(req, "output", sizeof(buf), buf); 1247 errstr = gctl_issue(req); 1248 if (errstr == NULL || errstr[0] == '\0') { 1249 if (buf[0] != '\0') 1250 printf("%s", buf); 1251 status = EXIT_SUCCESS; 1252 goto done; 1253 } 1254 1255 gpart_print_error(errstr); 1256 status = EXIT_FAILURE; 1257 1258 done: 1259 gctl_free(req); 1260 exit(status); 1261} 1262