1/*- 2 * Copyright (c) 2002, 2005-2007, 2011 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/param.h> 31#include <sys/bio.h> 32#include <sys/diskmbr.h> 33#include <sys/endian.h> 34#include <sys/gpt.h> 35#include <sys/kernel.h> 36#include <sys/kobj.h> 37#include <sys/limits.h> 38#include <sys/lock.h> 39#include <sys/malloc.h> 40#include <sys/mutex.h> 41#include <sys/queue.h> 42#include <sys/sbuf.h> 43#include <sys/systm.h> 44#include <sys/sysctl.h> 45#include <sys/uuid.h> 46#include <geom/geom.h> 47#include <geom/part/g_part.h> 48 49#include "g_part_if.h" 50 51FEATURE(geom_part_gpt, "GEOM partitioning class for GPT partitions support"); 52 53CTASSERT(offsetof(struct gpt_hdr, padding) == 92); 54CTASSERT(sizeof(struct gpt_ent) == 128); 55 56#define EQUUID(a,b) (memcmp(a, b, sizeof(struct uuid)) == 0) 57 58#define MBRSIZE 512 59 60enum gpt_elt { 61 GPT_ELT_PRIHDR, 62 GPT_ELT_PRITBL, 63 GPT_ELT_SECHDR, 64 GPT_ELT_SECTBL, 65 GPT_ELT_COUNT 66}; 67 68enum gpt_state { 69 GPT_STATE_UNKNOWN, /* Not determined. */ 70 GPT_STATE_MISSING, /* No signature found. */ 71 GPT_STATE_CORRUPT, /* Checksum mismatch. */ 72 GPT_STATE_INVALID, /* Nonconformant/invalid. */ 73 GPT_STATE_OK /* Perfectly fine. */ 74}; 75 76struct g_part_gpt_table { 77 struct g_part_table base; 78 u_char mbr[MBRSIZE]; 79 struct gpt_hdr *hdr; 80 quad_t lba[GPT_ELT_COUNT]; 81 enum gpt_state state[GPT_ELT_COUNT]; 82 int bootcamp; 83}; 84 85struct g_part_gpt_entry { 86 struct g_part_entry base; 87 struct gpt_ent ent; 88}; 89 90static void g_gpt_printf_utf16(struct sbuf *, uint16_t *, size_t); 91static void g_gpt_utf8_to_utf16(const uint8_t *, uint16_t *, size_t); 92static void g_gpt_set_defaults(struct g_part_table *, struct g_provider *); 93 94static int g_part_gpt_add(struct g_part_table *, struct g_part_entry *, 95 struct g_part_parms *); 96static int g_part_gpt_bootcode(struct g_part_table *, struct g_part_parms *); 97static int g_part_gpt_create(struct g_part_table *, struct g_part_parms *); 98static int g_part_gpt_destroy(struct g_part_table *, struct g_part_parms *); 99static void g_part_gpt_dumpconf(struct g_part_table *, struct g_part_entry *, 100 struct sbuf *, const char *); 101static int g_part_gpt_dumpto(struct g_part_table *, struct g_part_entry *); 102static int g_part_gpt_modify(struct g_part_table *, struct g_part_entry *, 103 struct g_part_parms *); 104static const char *g_part_gpt_name(struct g_part_table *, struct g_part_entry *, 105 char *, size_t); 106static int g_part_gpt_probe(struct g_part_table *, struct g_consumer *); 107static int g_part_gpt_read(struct g_part_table *, struct g_consumer *); 108static int g_part_gpt_setunset(struct g_part_table *table, 109 struct g_part_entry *baseentry, const char *attrib, unsigned int set); 110static const char *g_part_gpt_type(struct g_part_table *, struct g_part_entry *, 111 char *, size_t); 112static int g_part_gpt_write(struct g_part_table *, struct g_consumer *); 113static int g_part_gpt_resize(struct g_part_table *, struct g_part_entry *, 114 struct g_part_parms *); 115static int g_part_gpt_recover(struct g_part_table *); 116 117static kobj_method_t g_part_gpt_methods[] = { 118 KOBJMETHOD(g_part_add, g_part_gpt_add), 119 KOBJMETHOD(g_part_bootcode, g_part_gpt_bootcode), 120 KOBJMETHOD(g_part_create, g_part_gpt_create), 121 KOBJMETHOD(g_part_destroy, g_part_gpt_destroy), 122 KOBJMETHOD(g_part_dumpconf, g_part_gpt_dumpconf), 123 KOBJMETHOD(g_part_dumpto, g_part_gpt_dumpto), 124 KOBJMETHOD(g_part_modify, g_part_gpt_modify), 125 KOBJMETHOD(g_part_resize, g_part_gpt_resize), 126 KOBJMETHOD(g_part_name, g_part_gpt_name), 127 KOBJMETHOD(g_part_probe, g_part_gpt_probe), 128 KOBJMETHOD(g_part_read, g_part_gpt_read), 129 KOBJMETHOD(g_part_recover, g_part_gpt_recover), 130 KOBJMETHOD(g_part_setunset, g_part_gpt_setunset), 131 KOBJMETHOD(g_part_type, g_part_gpt_type), 132 KOBJMETHOD(g_part_write, g_part_gpt_write), 133 { 0, 0 } 134}; 135 136static struct g_part_scheme g_part_gpt_scheme = { 137 "GPT", 138 g_part_gpt_methods, 139 sizeof(struct g_part_gpt_table), 140 .gps_entrysz = sizeof(struct g_part_gpt_entry), 141 .gps_minent = 128, 142 .gps_maxent = 4096, 143 .gps_bootcodesz = MBRSIZE, 144}; 145G_PART_SCHEME_DECLARE(g_part_gpt); 146 147static struct uuid gpt_uuid_apple_boot = GPT_ENT_TYPE_APPLE_BOOT; 148static struct uuid gpt_uuid_apple_hfs = GPT_ENT_TYPE_APPLE_HFS; 149static struct uuid gpt_uuid_apple_label = GPT_ENT_TYPE_APPLE_LABEL; 150static struct uuid gpt_uuid_apple_raid = GPT_ENT_TYPE_APPLE_RAID; 151static struct uuid gpt_uuid_apple_raid_offline = GPT_ENT_TYPE_APPLE_RAID_OFFLINE; 152static struct uuid gpt_uuid_apple_tv_recovery = GPT_ENT_TYPE_APPLE_TV_RECOVERY; 153static struct uuid gpt_uuid_apple_ufs = GPT_ENT_TYPE_APPLE_UFS; 154static struct uuid gpt_uuid_bios_boot = GPT_ENT_TYPE_BIOS_BOOT; 155static struct uuid gpt_uuid_efi = GPT_ENT_TYPE_EFI; 156static struct uuid gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD; 157static struct uuid gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT; 158static struct uuid gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS; 159static struct uuid gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP; 160static struct uuid gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS; 161static struct uuid gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM; 162static struct uuid gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS; 163static struct uuid gpt_uuid_linux_data = GPT_ENT_TYPE_LINUX_DATA; 164static struct uuid gpt_uuid_linux_lvm = GPT_ENT_TYPE_LINUX_LVM; 165static struct uuid gpt_uuid_linux_raid = GPT_ENT_TYPE_LINUX_RAID; 166static struct uuid gpt_uuid_linux_swap = GPT_ENT_TYPE_LINUX_SWAP; 167static struct uuid gpt_uuid_vmfs = GPT_ENT_TYPE_VMFS; 168static struct uuid gpt_uuid_vmkdiag = GPT_ENT_TYPE_VMKDIAG; 169static struct uuid gpt_uuid_vmreserved = GPT_ENT_TYPE_VMRESERVED; 170static struct uuid gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA; 171static struct uuid gpt_uuid_ms_reserved = GPT_ENT_TYPE_MS_RESERVED; 172static struct uuid gpt_uuid_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA; 173static struct uuid gpt_uuid_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA; 174static struct uuid gpt_uuid_netbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD; 175static struct uuid gpt_uuid_netbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD; 176static struct uuid gpt_uuid_netbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS; 177static struct uuid gpt_uuid_netbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS; 178static struct uuid gpt_uuid_netbsd_raid = GPT_ENT_TYPE_NETBSD_RAID; 179static struct uuid gpt_uuid_netbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP; 180static struct uuid gpt_uuid_mbr = GPT_ENT_TYPE_MBR; 181static struct uuid gpt_uuid_unused = GPT_ENT_TYPE_UNUSED; 182 183static struct g_part_uuid_alias { 184 struct uuid *uuid; 185 int alias; 186 int mbrtype; 187} gpt_uuid_alias_match[] = { 188 { &gpt_uuid_apple_boot, G_PART_ALIAS_APPLE_BOOT, 0xab }, 189 { &gpt_uuid_apple_hfs, G_PART_ALIAS_APPLE_HFS, 0xaf }, 190 { &gpt_uuid_apple_label, G_PART_ALIAS_APPLE_LABEL, 0 }, 191 { &gpt_uuid_apple_raid, G_PART_ALIAS_APPLE_RAID, 0 }, 192 { &gpt_uuid_apple_raid_offline, G_PART_ALIAS_APPLE_RAID_OFFLINE, 0 }, 193 { &gpt_uuid_apple_tv_recovery, G_PART_ALIAS_APPLE_TV_RECOVERY, 0 }, 194 { &gpt_uuid_apple_ufs, G_PART_ALIAS_APPLE_UFS, 0 }, 195 { &gpt_uuid_bios_boot, G_PART_ALIAS_BIOS_BOOT, 0 }, 196 { &gpt_uuid_efi, G_PART_ALIAS_EFI, 0xee }, 197 { &gpt_uuid_freebsd, G_PART_ALIAS_FREEBSD, 0xa5 }, 198 { &gpt_uuid_freebsd_boot, G_PART_ALIAS_FREEBSD_BOOT, 0 }, 199 { &gpt_uuid_freebsd_nandfs, G_PART_ALIAS_FREEBSD_NANDFS, 0 }, 200 { &gpt_uuid_freebsd_swap, G_PART_ALIAS_FREEBSD_SWAP, 0 }, 201 { &gpt_uuid_freebsd_ufs, G_PART_ALIAS_FREEBSD_UFS, 0 }, 202 { &gpt_uuid_freebsd_vinum, G_PART_ALIAS_FREEBSD_VINUM, 0 }, 203 { &gpt_uuid_freebsd_zfs, G_PART_ALIAS_FREEBSD_ZFS, 0 }, 204 { &gpt_uuid_linux_data, G_PART_ALIAS_LINUX_DATA, 0x0b }, 205 { &gpt_uuid_linux_lvm, G_PART_ALIAS_LINUX_LVM, 0 }, 206 { &gpt_uuid_linux_raid, G_PART_ALIAS_LINUX_RAID, 0 }, 207 { &gpt_uuid_linux_swap, G_PART_ALIAS_LINUX_SWAP, 0 }, 208 { &gpt_uuid_vmfs, G_PART_ALIAS_VMFS, 0 }, 209 { &gpt_uuid_vmkdiag, G_PART_ALIAS_VMKDIAG, 0 }, 210 { &gpt_uuid_vmreserved, G_PART_ALIAS_VMRESERVED, 0 }, 211 { &gpt_uuid_mbr, G_PART_ALIAS_MBR, 0 }, 212 { &gpt_uuid_ms_basic_data, G_PART_ALIAS_MS_BASIC_DATA, 0x0b }, 213 { &gpt_uuid_ms_ldm_data, G_PART_ALIAS_MS_LDM_DATA, 0 }, 214 { &gpt_uuid_ms_ldm_metadata, G_PART_ALIAS_MS_LDM_METADATA, 0 }, 215 { &gpt_uuid_ms_reserved, G_PART_ALIAS_MS_RESERVED, 0 }, 216 { &gpt_uuid_netbsd_ccd, G_PART_ALIAS_NETBSD_CCD, 0 }, 217 { &gpt_uuid_netbsd_cgd, G_PART_ALIAS_NETBSD_CGD, 0 }, 218 { &gpt_uuid_netbsd_ffs, G_PART_ALIAS_NETBSD_FFS, 0 }, 219 { &gpt_uuid_netbsd_lfs, G_PART_ALIAS_NETBSD_LFS, 0 }, 220 { &gpt_uuid_netbsd_raid, G_PART_ALIAS_NETBSD_RAID, 0 }, 221 { &gpt_uuid_netbsd_swap, G_PART_ALIAS_NETBSD_SWAP, 0 }, 222 { NULL, 0, 0 } 223}; 224 225static int 226gpt_write_mbr_entry(u_char *mbr, int idx, int typ, quad_t start, 227 quad_t end) 228{ 229 230 if (typ == 0 || start > UINT32_MAX || end > UINT32_MAX) 231 return (EINVAL); 232 233 mbr += DOSPARTOFF + idx * DOSPARTSIZE; 234 mbr[0] = 0; 235 if (start == 1) { 236 /* 237 * Treat the PMBR partition specially to maximize 238 * interoperability with BIOSes. 239 */ 240 mbr[1] = mbr[3] = 0; 241 mbr[2] = 2; 242 } else 243 mbr[1] = mbr[2] = mbr[3] = 0xff; 244 mbr[4] = typ; 245 mbr[5] = mbr[6] = mbr[7] = 0xff; 246 le32enc(mbr + 8, (uint32_t)start); 247 le32enc(mbr + 12, (uint32_t)(end - start + 1)); 248 return (0); 249} 250 251static int 252gpt_map_type(struct uuid *t) 253{ 254 struct g_part_uuid_alias *uap; 255 256 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) { 257 if (EQUUID(t, uap->uuid)) 258 return (uap->mbrtype); 259 } 260 return (0); 261} 262 263static void 264gpt_create_pmbr(struct g_part_gpt_table *table, struct g_provider *pp) 265{ 266 267 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART); 268 gpt_write_mbr_entry(table->mbr, 0, 0xee, 1, 269 MIN(pp->mediasize / pp->sectorsize - 1, UINT32_MAX)); 270 le16enc(table->mbr + DOSMAGICOFFSET, DOSMAGIC); 271} 272 273/* 274 * Under Boot Camp the PMBR partition (type 0xEE) doesn't cover the 275 * whole disk anymore. Rather, it covers the GPT table and the EFI 276 * system partition only. This way the HFS+ partition and any FAT 277 * partitions can be added to the MBR without creating an overlap. 278 */ 279static int 280gpt_is_bootcamp(struct g_part_gpt_table *table, const char *provname) 281{ 282 uint8_t *p; 283 284 p = table->mbr + DOSPARTOFF; 285 if (p[4] != 0xee || le32dec(p + 8) != 1) 286 return (0); 287 288 p += DOSPARTSIZE; 289 if (p[4] != 0xaf) 290 return (0); 291 292 printf("GEOM: %s: enabling Boot Camp\n", provname); 293 return (1); 294} 295 296static void 297gpt_update_bootcamp(struct g_part_table *basetable, struct g_provider *pp) 298{ 299 struct g_part_entry *baseentry; 300 struct g_part_gpt_entry *entry; 301 struct g_part_gpt_table *table; 302 int bootable, error, index, slices, typ; 303 304 table = (struct g_part_gpt_table *)basetable; 305 306 bootable = -1; 307 for (index = 0; index < NDOSPART; index++) { 308 if (table->mbr[DOSPARTOFF + DOSPARTSIZE * index]) 309 bootable = index; 310 } 311 312 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART); 313 slices = 0; 314 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) { 315 if (baseentry->gpe_deleted) 316 continue; 317 index = baseentry->gpe_index - 1; 318 if (index >= NDOSPART) 319 continue; 320 321 entry = (struct g_part_gpt_entry *)baseentry; 322 323 switch (index) { 324 case 0: /* This must be the EFI system partition. */ 325 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_efi)) 326 goto disable; 327 error = gpt_write_mbr_entry(table->mbr, index, 0xee, 328 1ull, entry->ent.ent_lba_end); 329 break; 330 case 1: /* This must be the HFS+ partition. */ 331 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_apple_hfs)) 332 goto disable; 333 error = gpt_write_mbr_entry(table->mbr, index, 0xaf, 334 entry->ent.ent_lba_start, entry->ent.ent_lba_end); 335 break; 336 default: 337 typ = gpt_map_type(&entry->ent.ent_type); 338 error = gpt_write_mbr_entry(table->mbr, index, typ, 339 entry->ent.ent_lba_start, entry->ent.ent_lba_end); 340 break; 341 } 342 if (error) 343 continue; 344 345 if (index == bootable) 346 table->mbr[DOSPARTOFF + DOSPARTSIZE * index] = 0x80; 347 slices |= 1 << index; 348 } 349 if ((slices & 3) == 3) 350 return; 351 352 disable: 353 table->bootcamp = 0; 354 gpt_create_pmbr(table, pp); 355} 356 357static struct gpt_hdr * 358gpt_read_hdr(struct g_part_gpt_table *table, struct g_consumer *cp, 359 enum gpt_elt elt) 360{ 361 struct gpt_hdr *buf, *hdr; 362 struct g_provider *pp; 363 quad_t lba, last; 364 int error; 365 uint32_t crc, sz; 366 367 pp = cp->provider; 368 last = (pp->mediasize / pp->sectorsize) - 1; 369 table->state[elt] = GPT_STATE_MISSING; 370 /* 371 * If the primary header is valid look for secondary 372 * header in AlternateLBA, otherwise in the last medium's LBA. 373 */ 374 if (elt == GPT_ELT_SECHDR) { 375 if (table->state[GPT_ELT_PRIHDR] != GPT_STATE_OK) 376 table->lba[elt] = last; 377 } else 378 table->lba[elt] = 1; 379 buf = g_read_data(cp, table->lba[elt] * pp->sectorsize, pp->sectorsize, 380 &error); 381 if (buf == NULL) 382 return (NULL); 383 hdr = NULL; 384 if (memcmp(buf->hdr_sig, GPT_HDR_SIG, sizeof(buf->hdr_sig)) != 0) 385 goto fail; 386 387 table->state[elt] = GPT_STATE_CORRUPT; 388 sz = le32toh(buf->hdr_size); 389 if (sz < 92 || sz > pp->sectorsize) 390 goto fail; 391 392 hdr = g_malloc(sz, M_WAITOK | M_ZERO); 393 bcopy(buf, hdr, sz); 394 hdr->hdr_size = sz; 395 396 crc = le32toh(buf->hdr_crc_self); 397 buf->hdr_crc_self = 0; 398 if (crc32(buf, sz) != crc) 399 goto fail; 400 hdr->hdr_crc_self = crc; 401 402 table->state[elt] = GPT_STATE_INVALID; 403 hdr->hdr_revision = le32toh(buf->hdr_revision); 404 if (hdr->hdr_revision < GPT_HDR_REVISION) 405 goto fail; 406 hdr->hdr_lba_self = le64toh(buf->hdr_lba_self); 407 if (hdr->hdr_lba_self != table->lba[elt]) 408 goto fail; 409 hdr->hdr_lba_alt = le64toh(buf->hdr_lba_alt); 410 if (hdr->hdr_lba_alt == hdr->hdr_lba_self || 411 hdr->hdr_lba_alt > last) 412 goto fail; 413 414 /* Check the managed area. */ 415 hdr->hdr_lba_start = le64toh(buf->hdr_lba_start); 416 if (hdr->hdr_lba_start < 2 || hdr->hdr_lba_start >= last) 417 goto fail; 418 hdr->hdr_lba_end = le64toh(buf->hdr_lba_end); 419 if (hdr->hdr_lba_end < hdr->hdr_lba_start || hdr->hdr_lba_end >= last) 420 goto fail; 421 422 /* Check the table location and size of the table. */ 423 hdr->hdr_entries = le32toh(buf->hdr_entries); 424 hdr->hdr_entsz = le32toh(buf->hdr_entsz); 425 if (hdr->hdr_entries == 0 || hdr->hdr_entsz < 128 || 426 (hdr->hdr_entsz & 7) != 0) 427 goto fail; 428 hdr->hdr_lba_table = le64toh(buf->hdr_lba_table); 429 if (hdr->hdr_lba_table < 2 || hdr->hdr_lba_table >= last) 430 goto fail; 431 if (hdr->hdr_lba_table >= hdr->hdr_lba_start && 432 hdr->hdr_lba_table <= hdr->hdr_lba_end) 433 goto fail; 434 lba = hdr->hdr_lba_table + 435 (hdr->hdr_entries * hdr->hdr_entsz + pp->sectorsize - 1) / 436 pp->sectorsize - 1; 437 if (lba >= last) 438 goto fail; 439 if (lba >= hdr->hdr_lba_start && lba <= hdr->hdr_lba_end) 440 goto fail; 441 442 table->state[elt] = GPT_STATE_OK; 443 le_uuid_dec(&buf->hdr_uuid, &hdr->hdr_uuid); 444 hdr->hdr_crc_table = le32toh(buf->hdr_crc_table); 445 446 /* save LBA for secondary header */ 447 if (elt == GPT_ELT_PRIHDR) 448 table->lba[GPT_ELT_SECHDR] = hdr->hdr_lba_alt; 449 450 g_free(buf); 451 return (hdr); 452 453 fail: 454 if (hdr != NULL) 455 g_free(hdr); 456 g_free(buf); 457 return (NULL); 458} 459 460static struct gpt_ent * 461gpt_read_tbl(struct g_part_gpt_table *table, struct g_consumer *cp, 462 enum gpt_elt elt, struct gpt_hdr *hdr) 463{ 464 struct g_provider *pp; 465 struct gpt_ent *ent, *tbl; 466 char *buf, *p; 467 unsigned int idx, sectors, tblsz, size; 468 int error; 469 470 if (hdr == NULL) 471 return (NULL); 472 473 pp = cp->provider; 474 table->lba[elt] = hdr->hdr_lba_table; 475 476 table->state[elt] = GPT_STATE_MISSING; 477 tblsz = hdr->hdr_entries * hdr->hdr_entsz; 478 sectors = (tblsz + pp->sectorsize - 1) / pp->sectorsize; 479 buf = g_malloc(sectors * pp->sectorsize, M_WAITOK | M_ZERO); 480 for (idx = 0; idx < sectors; idx += MAXPHYS / pp->sectorsize) { 481 size = (sectors - idx > MAXPHYS / pp->sectorsize) ? MAXPHYS: 482 (sectors - idx) * pp->sectorsize; 483 p = g_read_data(cp, (table->lba[elt] + idx) * pp->sectorsize, 484 size, &error); 485 if (p == NULL) { 486 g_free(buf); 487 return (NULL); 488 } 489 bcopy(p, buf + idx * pp->sectorsize, size); 490 g_free(p); 491 } 492 table->state[elt] = GPT_STATE_CORRUPT; 493 if (crc32(buf, tblsz) != hdr->hdr_crc_table) { 494 g_free(buf); 495 return (NULL); 496 } 497 498 table->state[elt] = GPT_STATE_OK; 499 tbl = g_malloc(hdr->hdr_entries * sizeof(struct gpt_ent), 500 M_WAITOK | M_ZERO); 501 502 for (idx = 0, ent = tbl, p = buf; 503 idx < hdr->hdr_entries; 504 idx++, ent++, p += hdr->hdr_entsz) { 505 le_uuid_dec(p, &ent->ent_type); 506 le_uuid_dec(p + 16, &ent->ent_uuid); 507 ent->ent_lba_start = le64dec(p + 32); 508 ent->ent_lba_end = le64dec(p + 40); 509 ent->ent_attr = le64dec(p + 48); 510 /* Keep UTF-16 in little-endian. */ 511 bcopy(p + 56, ent->ent_name, sizeof(ent->ent_name)); 512 } 513 514 g_free(buf); 515 return (tbl); 516} 517 518static int 519gpt_matched_hdrs(struct gpt_hdr *pri, struct gpt_hdr *sec) 520{ 521 522 if (pri == NULL || sec == NULL) 523 return (0); 524 525 if (!EQUUID(&pri->hdr_uuid, &sec->hdr_uuid)) 526 return (0); 527 return ((pri->hdr_revision == sec->hdr_revision && 528 pri->hdr_size == sec->hdr_size && 529 pri->hdr_lba_start == sec->hdr_lba_start && 530 pri->hdr_lba_end == sec->hdr_lba_end && 531 pri->hdr_entries == sec->hdr_entries && 532 pri->hdr_entsz == sec->hdr_entsz && 533 pri->hdr_crc_table == sec->hdr_crc_table) ? 1 : 0); 534} 535 536static int 537gpt_parse_type(const char *type, struct uuid *uuid) 538{ 539 struct uuid tmp; 540 const char *alias; 541 int error; 542 struct g_part_uuid_alias *uap; 543 544 if (type[0] == '!') { 545 error = parse_uuid(type + 1, &tmp); 546 if (error) 547 return (error); 548 if (EQUUID(&tmp, &gpt_uuid_unused)) 549 return (EINVAL); 550 *uuid = tmp; 551 return (0); 552 } 553 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) { 554 alias = g_part_alias_name(uap->alias); 555 if (!strcasecmp(type, alias)) { 556 *uuid = *uap->uuid; 557 return (0); 558 } 559 } 560 return (EINVAL); 561} 562 563static int 564g_part_gpt_add(struct g_part_table *basetable, struct g_part_entry *baseentry, 565 struct g_part_parms *gpp) 566{ 567 struct g_part_gpt_entry *entry; 568 int error; 569 570 entry = (struct g_part_gpt_entry *)baseentry; 571 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type); 572 if (error) 573 return (error); 574 kern_uuidgen(&entry->ent.ent_uuid, 1); 575 entry->ent.ent_lba_start = baseentry->gpe_start; 576 entry->ent.ent_lba_end = baseentry->gpe_end; 577 if (baseentry->gpe_deleted) { 578 entry->ent.ent_attr = 0; 579 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name)); 580 } 581 if (gpp->gpp_parms & G_PART_PARM_LABEL) 582 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name, 583 sizeof(entry->ent.ent_name) / 584 sizeof(entry->ent.ent_name[0])); 585 return (0); 586} 587 588static int 589g_part_gpt_bootcode(struct g_part_table *basetable, struct g_part_parms *gpp) 590{ 591 struct g_part_gpt_table *table; 592 size_t codesz; 593 594 codesz = DOSPARTOFF; 595 table = (struct g_part_gpt_table *)basetable; 596 bzero(table->mbr, codesz); 597 codesz = MIN(codesz, gpp->gpp_codesize); 598 if (codesz > 0) 599 bcopy(gpp->gpp_codeptr, table->mbr, codesz); 600 return (0); 601} 602 603static int 604g_part_gpt_create(struct g_part_table *basetable, struct g_part_parms *gpp) 605{ 606 struct g_provider *pp; 607 struct g_part_gpt_table *table; 608 size_t tblsz; 609 610 /* We don't nest, which means that our depth should be 0. */ 611 if (basetable->gpt_depth != 0) 612 return (ENXIO); 613 614 table = (struct g_part_gpt_table *)basetable; 615 pp = gpp->gpp_provider; 616 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) + 617 pp->sectorsize - 1) / pp->sectorsize; 618 if (pp->sectorsize < MBRSIZE || 619 pp->mediasize < (3 + 2 * tblsz + basetable->gpt_entries) * 620 pp->sectorsize) 621 return (ENOSPC); 622 623 gpt_create_pmbr(table, pp); 624 625 /* Allocate space for the header */ 626 table->hdr = g_malloc(sizeof(struct gpt_hdr), M_WAITOK | M_ZERO); 627 628 bcopy(GPT_HDR_SIG, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig)); 629 table->hdr->hdr_revision = GPT_HDR_REVISION; 630 table->hdr->hdr_size = offsetof(struct gpt_hdr, padding); 631 kern_uuidgen(&table->hdr->hdr_uuid, 1); 632 table->hdr->hdr_entries = basetable->gpt_entries; 633 table->hdr->hdr_entsz = sizeof(struct gpt_ent); 634 635 g_gpt_set_defaults(basetable, pp); 636 return (0); 637} 638 639static int 640g_part_gpt_destroy(struct g_part_table *basetable, struct g_part_parms *gpp) 641{ 642 struct g_part_gpt_table *table; 643 struct g_provider *pp; 644 645 table = (struct g_part_gpt_table *)basetable; 646 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider; 647 g_free(table->hdr); 648 table->hdr = NULL; 649 650 /* 651 * Wipe the first 2 sectors to clear the partitioning. Wipe the last 652 * sector only if it has valid secondary header. 653 */ 654 basetable->gpt_smhead |= 3; 655 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK && 656 table->lba[GPT_ELT_SECHDR] == pp->mediasize / pp->sectorsize - 1) 657 basetable->gpt_smtail |= 1; 658 return (0); 659} 660 661static void 662g_part_gpt_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry, 663 struct sbuf *sb, const char *indent) 664{ 665 struct g_part_gpt_entry *entry; 666 667 entry = (struct g_part_gpt_entry *)baseentry; 668 if (indent == NULL) { 669 /* conftxt: libdisk compatibility */ 670 sbuf_printf(sb, " xs GPT xt "); 671 sbuf_printf_uuid(sb, &entry->ent.ent_type); 672 } else if (entry != NULL) { 673 /* confxml: partition entry information */ 674 sbuf_printf(sb, "%s<label>", indent); 675 g_gpt_printf_utf16(sb, entry->ent.ent_name, 676 sizeof(entry->ent.ent_name) >> 1); 677 sbuf_printf(sb, "</label>\n"); 678 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTME) 679 sbuf_printf(sb, "%s<attrib>bootme</attrib>\n", indent); 680 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTONCE) { 681 sbuf_printf(sb, "%s<attrib>bootonce</attrib>\n", 682 indent); 683 } 684 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTFAILED) { 685 sbuf_printf(sb, "%s<attrib>bootfailed</attrib>\n", 686 indent); 687 } 688 sbuf_printf(sb, "%s<rawtype>", indent); 689 sbuf_printf_uuid(sb, &entry->ent.ent_type); 690 sbuf_printf(sb, "</rawtype>\n"); 691 sbuf_printf(sb, "%s<rawuuid>", indent); 692 sbuf_printf_uuid(sb, &entry->ent.ent_uuid); 693 sbuf_printf(sb, "</rawuuid>\n"); 694 } else { 695 /* confxml: scheme information */ 696 } 697} 698 699static int 700g_part_gpt_dumpto(struct g_part_table *table, struct g_part_entry *baseentry) 701{ 702 struct g_part_gpt_entry *entry; 703 704 entry = (struct g_part_gpt_entry *)baseentry; 705 return ((EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd_swap) || 706 EQUUID(&entry->ent.ent_type, &gpt_uuid_linux_swap)) ? 1 : 0); 707} 708 709static int 710g_part_gpt_modify(struct g_part_table *basetable, 711 struct g_part_entry *baseentry, struct g_part_parms *gpp) 712{ 713 struct g_part_gpt_entry *entry; 714 int error; 715 716 entry = (struct g_part_gpt_entry *)baseentry; 717 if (gpp->gpp_parms & G_PART_PARM_TYPE) { 718 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type); 719 if (error) 720 return (error); 721 } 722 if (gpp->gpp_parms & G_PART_PARM_LABEL) 723 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name, 724 sizeof(entry->ent.ent_name) / 725 sizeof(entry->ent.ent_name[0])); 726 return (0); 727} 728 729static int 730g_part_gpt_resize(struct g_part_table *basetable, 731 struct g_part_entry *baseentry, struct g_part_parms *gpp) 732{ 733 struct g_part_gpt_entry *entry; 734 entry = (struct g_part_gpt_entry *)baseentry; 735 736 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1; 737 entry->ent.ent_lba_end = baseentry->gpe_end; 738 739 return (0); 740} 741 742static const char * 743g_part_gpt_name(struct g_part_table *table, struct g_part_entry *baseentry, 744 char *buf, size_t bufsz) 745{ 746 struct g_part_gpt_entry *entry; 747 char c; 748 749 entry = (struct g_part_gpt_entry *)baseentry; 750 c = (EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd)) ? 's' : 'p'; 751 snprintf(buf, bufsz, "%c%d", c, baseentry->gpe_index); 752 return (buf); 753} 754 755static int 756g_part_gpt_probe(struct g_part_table *table, struct g_consumer *cp) 757{ 758 struct g_provider *pp; 759 char *buf; 760 int error, res; 761 762 /* We don't nest, which means that our depth should be 0. */ 763 if (table->gpt_depth != 0) 764 return (ENXIO); 765 766 pp = cp->provider; 767 768 /* 769 * Sanity-check the provider. Since the first sector on the provider 770 * must be a PMBR and a PMBR is 512 bytes large, the sector size 771 * must be at least 512 bytes. Also, since the theoretical minimum 772 * number of sectors needed by GPT is 6, any medium that has less 773 * than 6 sectors is never going to be able to hold a GPT. The 774 * number 6 comes from: 775 * 1 sector for the PMBR 776 * 2 sectors for the GPT headers (each 1 sector) 777 * 2 sectors for the GPT tables (each 1 sector) 778 * 1 sector for an actual partition 779 * It's better to catch this pathological case early than behaving 780 * pathologically later on... 781 */ 782 if (pp->sectorsize < MBRSIZE || pp->mediasize < 6 * pp->sectorsize) 783 return (ENOSPC); 784 785 /* Check that there's a MBR. */ 786 buf = g_read_data(cp, 0L, pp->sectorsize, &error); 787 if (buf == NULL) 788 return (error); 789 res = le16dec(buf + DOSMAGICOFFSET); 790 g_free(buf); 791 if (res != DOSMAGIC) 792 return (ENXIO); 793 794 /* Check that there's a primary header. */ 795 buf = g_read_data(cp, pp->sectorsize, pp->sectorsize, &error); 796 if (buf == NULL) 797 return (error); 798 res = memcmp(buf, GPT_HDR_SIG, 8); 799 g_free(buf); 800 if (res == 0) 801 return (G_PART_PROBE_PRI_HIGH); 802 803 /* No primary? Check that there's a secondary. */ 804 buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 805 &error); 806 if (buf == NULL) 807 return (error); 808 res = memcmp(buf, GPT_HDR_SIG, 8); 809 g_free(buf); 810 return ((res == 0) ? G_PART_PROBE_PRI_HIGH : ENXIO); 811} 812 813static int 814g_part_gpt_read(struct g_part_table *basetable, struct g_consumer *cp) 815{ 816 struct gpt_hdr *prihdr, *sechdr; 817 struct gpt_ent *tbl, *pritbl, *sectbl; 818 struct g_provider *pp; 819 struct g_part_gpt_table *table; 820 struct g_part_gpt_entry *entry; 821 u_char *buf; 822 uint64_t last; 823 int error, index; 824 825 table = (struct g_part_gpt_table *)basetable; 826 pp = cp->provider; 827 last = (pp->mediasize / pp->sectorsize) - 1; 828 829 /* Read the PMBR */ 830 buf = g_read_data(cp, 0, pp->sectorsize, &error); 831 if (buf == NULL) 832 return (error); 833 bcopy(buf, table->mbr, MBRSIZE); 834 g_free(buf); 835 836 /* Read the primary header and table. */ 837 prihdr = gpt_read_hdr(table, cp, GPT_ELT_PRIHDR); 838 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK) { 839 pritbl = gpt_read_tbl(table, cp, GPT_ELT_PRITBL, prihdr); 840 } else { 841 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING; 842 pritbl = NULL; 843 } 844 845 /* Read the secondary header and table. */ 846 sechdr = gpt_read_hdr(table, cp, GPT_ELT_SECHDR); 847 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK) { 848 sectbl = gpt_read_tbl(table, cp, GPT_ELT_SECTBL, sechdr); 849 } else { 850 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING; 851 sectbl = NULL; 852 } 853 854 /* Fail if we haven't got any good tables at all. */ 855 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK && 856 table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) { 857 printf("GEOM: %s: corrupt or invalid GPT detected.\n", 858 pp->name); 859 printf("GEOM: %s: GPT rejected -- may not be recoverable.\n", 860 pp->name); 861 return (EINVAL); 862 } 863 864 /* 865 * If both headers are good but they disagree with each other, 866 * then invalidate one. We prefer to keep the primary header, 867 * unless the primary table is corrupt. 868 */ 869 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK && 870 table->state[GPT_ELT_SECHDR] == GPT_STATE_OK && 871 !gpt_matched_hdrs(prihdr, sechdr)) { 872 if (table->state[GPT_ELT_PRITBL] == GPT_STATE_OK) { 873 table->state[GPT_ELT_SECHDR] = GPT_STATE_INVALID; 874 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING; 875 g_free(sechdr); 876 sechdr = NULL; 877 } else { 878 table->state[GPT_ELT_PRIHDR] = GPT_STATE_INVALID; 879 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING; 880 g_free(prihdr); 881 prihdr = NULL; 882 } 883 } 884 885 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK) { 886 printf("GEOM: %s: the primary GPT table is corrupt or " 887 "invalid.\n", pp->name); 888 printf("GEOM: %s: using the secondary instead -- recovery " 889 "strongly advised.\n", pp->name); 890 table->hdr = sechdr; 891 basetable->gpt_corrupt = 1; 892 if (prihdr != NULL) 893 g_free(prihdr); 894 tbl = sectbl; 895 if (pritbl != NULL) 896 g_free(pritbl); 897 } else { 898 if (table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) { 899 printf("GEOM: %s: the secondary GPT table is corrupt " 900 "or invalid.\n", pp->name); 901 printf("GEOM: %s: using the primary only -- recovery " 902 "suggested.\n", pp->name); 903 basetable->gpt_corrupt = 1; 904 } else if (table->lba[GPT_ELT_SECHDR] != last) { 905 printf( "GEOM: %s: the secondary GPT header is not in " 906 "the last LBA.\n", pp->name); 907 basetable->gpt_corrupt = 1; 908 } 909 table->hdr = prihdr; 910 if (sechdr != NULL) 911 g_free(sechdr); 912 tbl = pritbl; 913 if (sectbl != NULL) 914 g_free(sectbl); 915 } 916 917 basetable->gpt_first = table->hdr->hdr_lba_start; 918 basetable->gpt_last = table->hdr->hdr_lba_end; 919 basetable->gpt_entries = (table->hdr->hdr_lba_start - 2) * 920 pp->sectorsize / table->hdr->hdr_entsz; 921 922 for (index = table->hdr->hdr_entries - 1; index >= 0; index--) { 923 if (EQUUID(&tbl[index].ent_type, &gpt_uuid_unused)) 924 continue; 925 entry = (struct g_part_gpt_entry *)g_part_new_entry( 926 basetable, index + 1, tbl[index].ent_lba_start, 927 tbl[index].ent_lba_end); 928 entry->ent = tbl[index]; 929 } 930 931 g_free(tbl); 932 933 /* 934 * Under Mac OS X, the MBR mirrors the first 4 GPT partitions 935 * if (and only if) any FAT32 or FAT16 partitions have been 936 * created. This happens irrespective of whether Boot Camp is 937 * used/enabled, though it's generally understood to be done 938 * to support legacy Windows under Boot Camp. We refer to this 939 * mirroring simply as Boot Camp. We try to detect Boot Camp 940 * so that we can update the MBR if and when GPT changes have 941 * been made. Note that we do not enable Boot Camp if not 942 * previously enabled because we can't assume that we're on a 943 * Mac alongside Mac OS X. 944 */ 945 table->bootcamp = gpt_is_bootcamp(table, pp->name); 946 947 return (0); 948} 949 950static int 951g_part_gpt_recover(struct g_part_table *basetable) 952{ 953 struct g_part_gpt_table *table; 954 struct g_provider *pp; 955 956 table = (struct g_part_gpt_table *)basetable; 957 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider; 958 gpt_create_pmbr(table, pp); 959 g_gpt_set_defaults(basetable, pp); 960 basetable->gpt_corrupt = 0; 961 return (0); 962} 963 964static int 965g_part_gpt_setunset(struct g_part_table *basetable, 966 struct g_part_entry *baseentry, const char *attrib, unsigned int set) 967{ 968 struct g_part_gpt_entry *entry; 969 struct g_part_gpt_table *table; 970 uint8_t *p; 971 uint64_t attr; 972 int i; 973 974 table = (struct g_part_gpt_table *)basetable; 975 entry = (struct g_part_gpt_entry *)baseentry; 976 977 if (strcasecmp(attrib, "active") == 0) { 978 if (table->bootcamp) { 979 /* The active flag must be set on a valid entry. */ 980 if (entry == NULL) 981 return (ENXIO); 982 if (baseentry->gpe_index > NDOSPART) 983 return (EINVAL); 984 for (i = 0; i < NDOSPART; i++) { 985 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE]; 986 p[0] = (i == baseentry->gpe_index - 1) 987 ? ((set) ? 0x80 : 0) : 0; 988 } 989 } else { 990 /* The PMBR is marked as active without an entry. */ 991 if (entry != NULL) 992 return (ENXIO); 993 for (i = 0; i < NDOSPART; i++) { 994 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE]; 995 p[0] = (p[4] == 0xee) ? ((set) ? 0x80 : 0) : 0; 996 } 997 } 998 return (0); 999 } 1000 1001 if (entry == NULL) 1002 return (ENODEV); 1003 1004 attr = 0; 1005 if (strcasecmp(attrib, "bootme") == 0) { 1006 attr |= GPT_ENT_ATTR_BOOTME; 1007 } else if (strcasecmp(attrib, "bootonce") == 0) { 1008 attr |= GPT_ENT_ATTR_BOOTONCE; 1009 if (set) 1010 attr |= GPT_ENT_ATTR_BOOTME; 1011 } else if (strcasecmp(attrib, "bootfailed") == 0) { 1012 /* 1013 * It should only be possible to unset BOOTFAILED, but it might 1014 * be useful for test purposes to also be able to set it. 1015 */ 1016 attr |= GPT_ENT_ATTR_BOOTFAILED; 1017 } 1018 if (attr == 0) 1019 return (EINVAL); 1020 1021 if (set) 1022 attr = entry->ent.ent_attr | attr; 1023 else 1024 attr = entry->ent.ent_attr & ~attr; 1025 if (attr != entry->ent.ent_attr) { 1026 entry->ent.ent_attr = attr; 1027 if (!baseentry->gpe_created) 1028 baseentry->gpe_modified = 1; 1029 } 1030 return (0); 1031} 1032 1033static const char * 1034g_part_gpt_type(struct g_part_table *basetable, struct g_part_entry *baseentry, 1035 char *buf, size_t bufsz) 1036{ 1037 struct g_part_gpt_entry *entry; 1038 struct uuid *type; 1039 struct g_part_uuid_alias *uap; 1040 1041 entry = (struct g_part_gpt_entry *)baseentry; 1042 type = &entry->ent.ent_type; 1043 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) 1044 if (EQUUID(type, uap->uuid)) 1045 return (g_part_alias_name(uap->alias)); 1046 buf[0] = '!'; 1047 snprintf_uuid(buf + 1, bufsz - 1, type); 1048 1049 return (buf); 1050} 1051 1052static int 1053g_part_gpt_write(struct g_part_table *basetable, struct g_consumer *cp) 1054{ 1055 unsigned char *buf, *bp; 1056 struct g_provider *pp; 1057 struct g_part_entry *baseentry; 1058 struct g_part_gpt_entry *entry; 1059 struct g_part_gpt_table *table; 1060 size_t tblsz; 1061 uint32_t crc; 1062 int error, index; 1063 1064 pp = cp->provider; 1065 table = (struct g_part_gpt_table *)basetable; 1066 tblsz = (table->hdr->hdr_entries * table->hdr->hdr_entsz + 1067 pp->sectorsize - 1) / pp->sectorsize; 1068 1069 /* Reconstruct the MBR from the GPT if under Boot Camp. */ 1070 if (table->bootcamp) 1071 gpt_update_bootcamp(basetable, pp); 1072 1073 /* Write the PMBR */ 1074 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO); 1075 bcopy(table->mbr, buf, MBRSIZE); 1076 error = g_write_data(cp, 0, buf, pp->sectorsize); 1077 g_free(buf); 1078 if (error) 1079 return (error); 1080 1081 /* Allocate space for the header and entries. */ 1082 buf = g_malloc((tblsz + 1) * pp->sectorsize, M_WAITOK | M_ZERO); 1083 1084 memcpy(buf, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig)); 1085 le32enc(buf + 8, table->hdr->hdr_revision); 1086 le32enc(buf + 12, table->hdr->hdr_size); 1087 le64enc(buf + 40, table->hdr->hdr_lba_start); 1088 le64enc(buf + 48, table->hdr->hdr_lba_end); 1089 le_uuid_enc(buf + 56, &table->hdr->hdr_uuid); 1090 le32enc(buf + 80, table->hdr->hdr_entries); 1091 le32enc(buf + 84, table->hdr->hdr_entsz); 1092 1093 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) { 1094 if (baseentry->gpe_deleted) 1095 continue; 1096 entry = (struct g_part_gpt_entry *)baseentry; 1097 index = baseentry->gpe_index - 1; 1098 bp = buf + pp->sectorsize + table->hdr->hdr_entsz * index; 1099 le_uuid_enc(bp, &entry->ent.ent_type); 1100 le_uuid_enc(bp + 16, &entry->ent.ent_uuid); 1101 le64enc(bp + 32, entry->ent.ent_lba_start); 1102 le64enc(bp + 40, entry->ent.ent_lba_end); 1103 le64enc(bp + 48, entry->ent.ent_attr); 1104 memcpy(bp + 56, entry->ent.ent_name, 1105 sizeof(entry->ent.ent_name)); 1106 } 1107 1108 crc = crc32(buf + pp->sectorsize, 1109 table->hdr->hdr_entries * table->hdr->hdr_entsz); 1110 le32enc(buf + 88, crc); 1111 1112 /* Write primary meta-data. */ 1113 le32enc(buf + 16, 0); /* hdr_crc_self. */ 1114 le64enc(buf + 24, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_self. */ 1115 le64enc(buf + 32, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_alt. */ 1116 le64enc(buf + 72, table->lba[GPT_ELT_PRITBL]); /* hdr_lba_table. */ 1117 crc = crc32(buf, table->hdr->hdr_size); 1118 le32enc(buf + 16, crc); 1119 1120 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) { 1121 error = g_write_data(cp, 1122 (table->lba[GPT_ELT_PRITBL] + index) * pp->sectorsize, 1123 buf + (index + 1) * pp->sectorsize, 1124 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS: 1125 (tblsz - index) * pp->sectorsize); 1126 if (error) 1127 goto out; 1128 } 1129 error = g_write_data(cp, table->lba[GPT_ELT_PRIHDR] * pp->sectorsize, 1130 buf, pp->sectorsize); 1131 if (error) 1132 goto out; 1133 1134 /* Write secondary meta-data. */ 1135 le32enc(buf + 16, 0); /* hdr_crc_self. */ 1136 le64enc(buf + 24, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_self. */ 1137 le64enc(buf + 32, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_alt. */ 1138 le64enc(buf + 72, table->lba[GPT_ELT_SECTBL]); /* hdr_lba_table. */ 1139 crc = crc32(buf, table->hdr->hdr_size); 1140 le32enc(buf + 16, crc); 1141 1142 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) { 1143 error = g_write_data(cp, 1144 (table->lba[GPT_ELT_SECTBL] + index) * pp->sectorsize, 1145 buf + (index + 1) * pp->sectorsize, 1146 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS: 1147 (tblsz - index) * pp->sectorsize); 1148 if (error) 1149 goto out; 1150 } 1151 error = g_write_data(cp, table->lba[GPT_ELT_SECHDR] * pp->sectorsize, 1152 buf, pp->sectorsize); 1153 1154 out: 1155 g_free(buf); 1156 return (error); 1157} 1158 1159static void 1160g_gpt_set_defaults(struct g_part_table *basetable, struct g_provider *pp) 1161{ 1162 struct g_part_gpt_table *table; 1163 quad_t last; 1164 size_t tblsz; 1165 1166 table = (struct g_part_gpt_table *)basetable; 1167 last = pp->mediasize / pp->sectorsize - 1; 1168 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) + 1169 pp->sectorsize - 1) / pp->sectorsize; 1170 1171 table->lba[GPT_ELT_PRIHDR] = 1; 1172 table->lba[GPT_ELT_PRITBL] = 2; 1173 table->lba[GPT_ELT_SECHDR] = last; 1174 table->lba[GPT_ELT_SECTBL] = last - tblsz; 1175 table->state[GPT_ELT_PRIHDR] = GPT_STATE_OK; 1176 table->state[GPT_ELT_PRITBL] = GPT_STATE_OK; 1177 table->state[GPT_ELT_SECHDR] = GPT_STATE_OK; 1178 table->state[GPT_ELT_SECTBL] = GPT_STATE_OK; 1179 1180 table->hdr->hdr_lba_start = 2 + tblsz; 1181 table->hdr->hdr_lba_end = last - tblsz - 1; 1182 1183 basetable->gpt_first = table->hdr->hdr_lba_start; 1184 basetable->gpt_last = table->hdr->hdr_lba_end; 1185} 1186 1187static void 1188g_gpt_printf_utf16(struct sbuf *sb, uint16_t *str, size_t len) 1189{ 1190 u_int bo; 1191 uint32_t ch; 1192 uint16_t c; 1193 1194 bo = LITTLE_ENDIAN; /* GPT is little-endian */ 1195 while (len > 0 && *str != 0) { 1196 ch = (bo == BIG_ENDIAN) ? be16toh(*str) : le16toh(*str); 1197 str++, len--; 1198 if ((ch & 0xf800) == 0xd800) { 1199 if (len > 0) { 1200 c = (bo == BIG_ENDIAN) ? be16toh(*str) 1201 : le16toh(*str); 1202 str++, len--; 1203 } else 1204 c = 0xfffd; 1205 if ((ch & 0x400) == 0 && (c & 0xfc00) == 0xdc00) { 1206 ch = ((ch & 0x3ff) << 10) + (c & 0x3ff); 1207 ch += 0x10000; 1208 } else 1209 ch = 0xfffd; 1210 } else if (ch == 0xfffe) { /* BOM (U+FEFF) swapped. */ 1211 bo = (bo == BIG_ENDIAN) ? LITTLE_ENDIAN : BIG_ENDIAN; 1212 continue; 1213 } else if (ch == 0xfeff) /* BOM (U+FEFF) unswapped. */ 1214 continue; 1215 1216 /* Write the Unicode character in UTF-8 */ 1217 if (ch < 0x80) 1218 sbuf_printf(sb, "%c", ch); 1219 else if (ch < 0x800) 1220 sbuf_printf(sb, "%c%c", 0xc0 | (ch >> 6), 1221 0x80 | (ch & 0x3f)); 1222 else if (ch < 0x10000) 1223 sbuf_printf(sb, "%c%c%c", 0xe0 | (ch >> 12), 1224 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f)); 1225 else if (ch < 0x200000) 1226 sbuf_printf(sb, "%c%c%c%c", 0xf0 | (ch >> 18), 1227 0x80 | ((ch >> 12) & 0x3f), 1228 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f)); 1229 } 1230} 1231 1232static void 1233g_gpt_utf8_to_utf16(const uint8_t *s8, uint16_t *s16, size_t s16len) 1234{ 1235 size_t s16idx, s8idx; 1236 uint32_t utfchar; 1237 unsigned int c, utfbytes; 1238 1239 s8idx = s16idx = 0; 1240 utfchar = 0; 1241 utfbytes = 0; 1242 bzero(s16, s16len << 1); 1243 while (s8[s8idx] != 0 && s16idx < s16len) { 1244 c = s8[s8idx++]; 1245 if ((c & 0xc0) != 0x80) { 1246 /* Initial characters. */ 1247 if (utfbytes != 0) { 1248 /* Incomplete encoding of previous char. */ 1249 s16[s16idx++] = htole16(0xfffd); 1250 } 1251 if ((c & 0xf8) == 0xf0) { 1252 utfchar = c & 0x07; 1253 utfbytes = 3; 1254 } else if ((c & 0xf0) == 0xe0) { 1255 utfchar = c & 0x0f; 1256 utfbytes = 2; 1257 } else if ((c & 0xe0) == 0xc0) { 1258 utfchar = c & 0x1f; 1259 utfbytes = 1; 1260 } else { 1261 utfchar = c & 0x7f; 1262 utfbytes = 0; 1263 } 1264 } else { 1265 /* Followup characters. */ 1266 if (utfbytes > 0) { 1267 utfchar = (utfchar << 6) + (c & 0x3f); 1268 utfbytes--; 1269 } else if (utfbytes == 0) 1270 utfbytes = ~0; 1271 } 1272 /* 1273 * Write the complete Unicode character as UTF-16 when we 1274 * have all the UTF-8 charactars collected. 1275 */ 1276 if (utfbytes == 0) { 1277 /* 1278 * If we need to write 2 UTF-16 characters, but 1279 * we only have room for 1, then we truncate the 1280 * string by writing a 0 instead. 1281 */ 1282 if (utfchar >= 0x10000 && s16idx < s16len - 1) { 1283 s16[s16idx++] = 1284 htole16(0xd800 | ((utfchar >> 10) - 0x40)); 1285 s16[s16idx++] = 1286 htole16(0xdc00 | (utfchar & 0x3ff)); 1287 } else 1288 s16[s16idx++] = (utfchar >= 0x10000) ? 0 : 1289 htole16(utfchar); 1290 } 1291 } 1292 /* 1293 * If our input string was truncated, append an invalid encoding 1294 * character to the output string. 1295 */ 1296 if (utfbytes != 0 && s16idx < s16len) 1297 s16[s16idx++] = htole16(0xfffd); 1298} 1299