2 * Copyright (c) 2002, 2005-2007, 2011 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/diskmbr.h>
33 #include <sys/endian.h>
35 #include <sys/kernel.h>
37 #include <sys/limits.h>
39 #include <sys/malloc.h>
40 #include <sys/mutex.h>
41 #include <sys/queue.h>
43 #include <sys/systm.h>
44 #include <sys/sysctl.h>
46 #include <geom/geom.h>
47 #include <geom/geom_int.h>
48 #include <geom/part/g_part.h>
50 #include "g_part_if.h"
52 FEATURE(geom_part_gpt, "GEOM partitioning class for GPT partitions support");
54 CTASSERT(offsetof(struct gpt_hdr, padding) == 92);
55 CTASSERT(sizeof(struct gpt_ent) == 128);
57 #define EQUUID(a,b) (memcmp(a, b, sizeof(struct uuid)) == 0)
70 GPT_STATE_UNKNOWN, /* Not determined. */
71 GPT_STATE_MISSING, /* No signature found. */
72 GPT_STATE_CORRUPT, /* Checksum mismatch. */
73 GPT_STATE_INVALID, /* Nonconformant/invalid. */
74 GPT_STATE_OK /* Perfectly fine. */
77 struct g_part_gpt_table {
78 struct g_part_table base;
81 quad_t lba[GPT_ELT_COUNT];
82 enum gpt_state state[GPT_ELT_COUNT];
86 struct g_part_gpt_entry {
87 struct g_part_entry base;
91 static void g_gpt_printf_utf16(struct sbuf *, uint16_t *, size_t);
92 static void g_gpt_utf8_to_utf16(const uint8_t *, uint16_t *, size_t);
93 static void g_gpt_set_defaults(struct g_part_table *, struct g_provider *);
95 static int g_part_gpt_add(struct g_part_table *, struct g_part_entry *,
96 struct g_part_parms *);
97 static int g_part_gpt_bootcode(struct g_part_table *, struct g_part_parms *);
98 static int g_part_gpt_create(struct g_part_table *, struct g_part_parms *);
99 static int g_part_gpt_destroy(struct g_part_table *, struct g_part_parms *);
100 static void g_part_gpt_dumpconf(struct g_part_table *, struct g_part_entry *,
101 struct sbuf *, const char *);
102 static int g_part_gpt_dumpto(struct g_part_table *, struct g_part_entry *);
103 static int g_part_gpt_modify(struct g_part_table *, struct g_part_entry *,
104 struct g_part_parms *);
105 static const char *g_part_gpt_name(struct g_part_table *, struct g_part_entry *,
107 static int g_part_gpt_probe(struct g_part_table *, struct g_consumer *);
108 static int g_part_gpt_read(struct g_part_table *, struct g_consumer *);
109 static int g_part_gpt_setunset(struct g_part_table *table,
110 struct g_part_entry *baseentry, const char *attrib, unsigned int set);
111 static const char *g_part_gpt_type(struct g_part_table *, struct g_part_entry *,
113 static int g_part_gpt_write(struct g_part_table *, struct g_consumer *);
114 static int g_part_gpt_resize(struct g_part_table *, struct g_part_entry *,
115 struct g_part_parms *);
116 static int g_part_gpt_recover(struct g_part_table *);
118 static kobj_method_t g_part_gpt_methods[] = {
119 KOBJMETHOD(g_part_add, g_part_gpt_add),
120 KOBJMETHOD(g_part_bootcode, g_part_gpt_bootcode),
121 KOBJMETHOD(g_part_create, g_part_gpt_create),
122 KOBJMETHOD(g_part_destroy, g_part_gpt_destroy),
123 KOBJMETHOD(g_part_dumpconf, g_part_gpt_dumpconf),
124 KOBJMETHOD(g_part_dumpto, g_part_gpt_dumpto),
125 KOBJMETHOD(g_part_modify, g_part_gpt_modify),
126 KOBJMETHOD(g_part_resize, g_part_gpt_resize),
127 KOBJMETHOD(g_part_name, g_part_gpt_name),
128 KOBJMETHOD(g_part_probe, g_part_gpt_probe),
129 KOBJMETHOD(g_part_read, g_part_gpt_read),
130 KOBJMETHOD(g_part_recover, g_part_gpt_recover),
131 KOBJMETHOD(g_part_setunset, g_part_gpt_setunset),
132 KOBJMETHOD(g_part_type, g_part_gpt_type),
133 KOBJMETHOD(g_part_write, g_part_gpt_write),
137 static struct g_part_scheme g_part_gpt_scheme = {
140 sizeof(struct g_part_gpt_table),
141 .gps_entrysz = sizeof(struct g_part_gpt_entry),
144 .gps_bootcodesz = MBRSIZE,
146 G_PART_SCHEME_DECLARE(g_part_gpt);
148 static struct uuid gpt_uuid_apple_boot = GPT_ENT_TYPE_APPLE_BOOT;
149 static struct uuid gpt_uuid_apple_core_storage =
150 GPT_ENT_TYPE_APPLE_CORE_STORAGE;
151 static struct uuid gpt_uuid_apple_hfs = GPT_ENT_TYPE_APPLE_HFS;
152 static struct uuid gpt_uuid_apple_label = GPT_ENT_TYPE_APPLE_LABEL;
153 static struct uuid gpt_uuid_apple_raid = GPT_ENT_TYPE_APPLE_RAID;
154 static struct uuid gpt_uuid_apple_raid_offline = GPT_ENT_TYPE_APPLE_RAID_OFFLINE;
155 static struct uuid gpt_uuid_apple_tv_recovery = GPT_ENT_TYPE_APPLE_TV_RECOVERY;
156 static struct uuid gpt_uuid_apple_ufs = GPT_ENT_TYPE_APPLE_UFS;
157 static struct uuid gpt_uuid_bios_boot = GPT_ENT_TYPE_BIOS_BOOT;
158 static struct uuid gpt_uuid_efi = GPT_ENT_TYPE_EFI;
159 static struct uuid gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD;
160 static struct uuid gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT;
161 static struct uuid gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS;
162 static struct uuid gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP;
163 static struct uuid gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS;
164 static struct uuid gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
165 static struct uuid gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
166 static struct uuid gpt_uuid_linux_data = GPT_ENT_TYPE_LINUX_DATA;
167 static struct uuid gpt_uuid_linux_lvm = GPT_ENT_TYPE_LINUX_LVM;
168 static struct uuid gpt_uuid_linux_raid = GPT_ENT_TYPE_LINUX_RAID;
169 static struct uuid gpt_uuid_linux_swap = GPT_ENT_TYPE_LINUX_SWAP;
170 static struct uuid gpt_uuid_vmfs = GPT_ENT_TYPE_VMFS;
171 static struct uuid gpt_uuid_vmkdiag = GPT_ENT_TYPE_VMKDIAG;
172 static struct uuid gpt_uuid_vmreserved = GPT_ENT_TYPE_VMRESERVED;
173 static struct uuid gpt_uuid_vmvsanhdr = GPT_ENT_TYPE_VMVSANHDR;
174 static struct uuid gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA;
175 static struct uuid gpt_uuid_ms_reserved = GPT_ENT_TYPE_MS_RESERVED;
176 static struct uuid gpt_uuid_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA;
177 static struct uuid gpt_uuid_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA;
178 static struct uuid gpt_uuid_netbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD;
179 static struct uuid gpt_uuid_netbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD;
180 static struct uuid gpt_uuid_netbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS;
181 static struct uuid gpt_uuid_netbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS;
182 static struct uuid gpt_uuid_netbsd_raid = GPT_ENT_TYPE_NETBSD_RAID;
183 static struct uuid gpt_uuid_netbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP;
184 static struct uuid gpt_uuid_mbr = GPT_ENT_TYPE_MBR;
185 static struct uuid gpt_uuid_unused = GPT_ENT_TYPE_UNUSED;
186 static struct uuid gpt_uuid_dfbsd_swap = GPT_ENT_TYPE_DRAGONFLY_SWAP;
187 static struct uuid gpt_uuid_dfbsd_ufs1 = GPT_ENT_TYPE_DRAGONFLY_UFS1;
188 static struct uuid gpt_uuid_dfbsd_vinum = GPT_ENT_TYPE_DRAGONFLY_VINUM;
189 static struct uuid gpt_uuid_dfbsd_ccd = GPT_ENT_TYPE_DRAGONFLY_CCD;
190 static struct uuid gpt_uuid_dfbsd_legacy = GPT_ENT_TYPE_DRAGONFLY_LEGACY;
191 static struct uuid gpt_uuid_dfbsd_hammer = GPT_ENT_TYPE_DRAGONFLY_HAMMER;
192 static struct uuid gpt_uuid_dfbsd_hammer2 = GPT_ENT_TYPE_DRAGONFLY_HAMMER2;
193 static struct uuid gpt_uuid_dfbsd_label32 = GPT_ENT_TYPE_DRAGONFLY_LABEL32;
194 static struct uuid gpt_uuid_dfbsd_label64 = GPT_ENT_TYPE_DRAGONFLY_LABEL64;
195 static struct uuid gpt_uuid_prep_boot = GPT_ENT_TYPE_PREP_BOOT;
197 static struct g_part_uuid_alias {
201 } gpt_uuid_alias_match[] = {
202 { &gpt_uuid_apple_boot, G_PART_ALIAS_APPLE_BOOT, 0xab },
203 { &gpt_uuid_apple_core_storage, G_PART_ALIAS_APPLE_CORE_STORAGE, 0 },
204 { &gpt_uuid_apple_hfs, G_PART_ALIAS_APPLE_HFS, 0xaf },
205 { &gpt_uuid_apple_label, G_PART_ALIAS_APPLE_LABEL, 0 },
206 { &gpt_uuid_apple_raid, G_PART_ALIAS_APPLE_RAID, 0 },
207 { &gpt_uuid_apple_raid_offline, G_PART_ALIAS_APPLE_RAID_OFFLINE, 0 },
208 { &gpt_uuid_apple_tv_recovery, G_PART_ALIAS_APPLE_TV_RECOVERY, 0 },
209 { &gpt_uuid_apple_ufs, G_PART_ALIAS_APPLE_UFS, 0 },
210 { &gpt_uuid_bios_boot, G_PART_ALIAS_BIOS_BOOT, 0 },
211 { &gpt_uuid_efi, G_PART_ALIAS_EFI, 0xee },
212 { &gpt_uuid_freebsd, G_PART_ALIAS_FREEBSD, 0xa5 },
213 { &gpt_uuid_freebsd_boot, G_PART_ALIAS_FREEBSD_BOOT, 0 },
214 { &gpt_uuid_freebsd_nandfs, G_PART_ALIAS_FREEBSD_NANDFS, 0 },
215 { &gpt_uuid_freebsd_swap, G_PART_ALIAS_FREEBSD_SWAP, 0 },
216 { &gpt_uuid_freebsd_ufs, G_PART_ALIAS_FREEBSD_UFS, 0 },
217 { &gpt_uuid_freebsd_vinum, G_PART_ALIAS_FREEBSD_VINUM, 0 },
218 { &gpt_uuid_freebsd_zfs, G_PART_ALIAS_FREEBSD_ZFS, 0 },
219 { &gpt_uuid_linux_data, G_PART_ALIAS_LINUX_DATA, 0x0b },
220 { &gpt_uuid_linux_lvm, G_PART_ALIAS_LINUX_LVM, 0 },
221 { &gpt_uuid_linux_raid, G_PART_ALIAS_LINUX_RAID, 0 },
222 { &gpt_uuid_linux_swap, G_PART_ALIAS_LINUX_SWAP, 0 },
223 { &gpt_uuid_vmfs, G_PART_ALIAS_VMFS, 0 },
224 { &gpt_uuid_vmkdiag, G_PART_ALIAS_VMKDIAG, 0 },
225 { &gpt_uuid_vmreserved, G_PART_ALIAS_VMRESERVED, 0 },
226 { &gpt_uuid_vmvsanhdr, G_PART_ALIAS_VMVSANHDR, 0 },
227 { &gpt_uuid_mbr, G_PART_ALIAS_MBR, 0 },
228 { &gpt_uuid_ms_basic_data, G_PART_ALIAS_MS_BASIC_DATA, 0x0b },
229 { &gpt_uuid_ms_ldm_data, G_PART_ALIAS_MS_LDM_DATA, 0 },
230 { &gpt_uuid_ms_ldm_metadata, G_PART_ALIAS_MS_LDM_METADATA, 0 },
231 { &gpt_uuid_ms_reserved, G_PART_ALIAS_MS_RESERVED, 0 },
232 { &gpt_uuid_netbsd_ccd, G_PART_ALIAS_NETBSD_CCD, 0 },
233 { &gpt_uuid_netbsd_cgd, G_PART_ALIAS_NETBSD_CGD, 0 },
234 { &gpt_uuid_netbsd_ffs, G_PART_ALIAS_NETBSD_FFS, 0 },
235 { &gpt_uuid_netbsd_lfs, G_PART_ALIAS_NETBSD_LFS, 0 },
236 { &gpt_uuid_netbsd_raid, G_PART_ALIAS_NETBSD_RAID, 0 },
237 { &gpt_uuid_netbsd_swap, G_PART_ALIAS_NETBSD_SWAP, 0 },
238 { &gpt_uuid_dfbsd_swap, G_PART_ALIAS_DFBSD_SWAP, 0 },
239 { &gpt_uuid_dfbsd_ufs1, G_PART_ALIAS_DFBSD_UFS, 0 },
240 { &gpt_uuid_dfbsd_vinum, G_PART_ALIAS_DFBSD_VINUM, 0 },
241 { &gpt_uuid_dfbsd_ccd, G_PART_ALIAS_DFBSD_CCD, 0 },
242 { &gpt_uuid_dfbsd_legacy, G_PART_ALIAS_DFBSD_LEGACY, 0 },
243 { &gpt_uuid_dfbsd_hammer, G_PART_ALIAS_DFBSD_HAMMER, 0 },
244 { &gpt_uuid_dfbsd_hammer2, G_PART_ALIAS_DFBSD_HAMMER2, 0 },
245 { &gpt_uuid_dfbsd_label32, G_PART_ALIAS_DFBSD, 0xa5 },
246 { &gpt_uuid_dfbsd_label64, G_PART_ALIAS_DFBSD64, 0xa5 },
247 { &gpt_uuid_prep_boot, G_PART_ALIAS_PREP_BOOT, 0x41 },
252 gpt_write_mbr_entry(u_char *mbr, int idx, int typ, quad_t start,
256 if (typ == 0 || start > UINT32_MAX || end > UINT32_MAX)
259 mbr += DOSPARTOFF + idx * DOSPARTSIZE;
263 * Treat the PMBR partition specially to maximize
264 * interoperability with BIOSes.
269 mbr[1] = mbr[2] = mbr[3] = 0xff;
271 mbr[5] = mbr[6] = mbr[7] = 0xff;
272 le32enc(mbr + 8, (uint32_t)start);
273 le32enc(mbr + 12, (uint32_t)(end - start + 1));
278 gpt_map_type(struct uuid *t)
280 struct g_part_uuid_alias *uap;
282 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) {
283 if (EQUUID(t, uap->uuid))
284 return (uap->mbrtype);
290 gpt_create_pmbr(struct g_part_gpt_table *table, struct g_provider *pp)
293 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
294 gpt_write_mbr_entry(table->mbr, 0, 0xee, 1,
295 MIN(pp->mediasize / pp->sectorsize - 1, UINT32_MAX));
296 le16enc(table->mbr + DOSMAGICOFFSET, DOSMAGIC);
300 * Under Boot Camp the PMBR partition (type 0xEE) doesn't cover the
301 * whole disk anymore. Rather, it covers the GPT table and the EFI
302 * system partition only. This way the HFS+ partition and any FAT
303 * partitions can be added to the MBR without creating an overlap.
306 gpt_is_bootcamp(struct g_part_gpt_table *table, const char *provname)
310 p = table->mbr + DOSPARTOFF;
311 if (p[4] != 0xee || le32dec(p + 8) != 1)
318 printf("GEOM: %s: enabling Boot Camp\n", provname);
323 gpt_update_bootcamp(struct g_part_table *basetable, struct g_provider *pp)
325 struct g_part_entry *baseentry;
326 struct g_part_gpt_entry *entry;
327 struct g_part_gpt_table *table;
328 int bootable, error, index, slices, typ;
330 table = (struct g_part_gpt_table *)basetable;
333 for (index = 0; index < NDOSPART; index++) {
334 if (table->mbr[DOSPARTOFF + DOSPARTSIZE * index])
338 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
340 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) {
341 if (baseentry->gpe_deleted)
343 index = baseentry->gpe_index - 1;
344 if (index >= NDOSPART)
347 entry = (struct g_part_gpt_entry *)baseentry;
350 case 0: /* This must be the EFI system partition. */
351 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_efi))
353 error = gpt_write_mbr_entry(table->mbr, index, 0xee,
354 1ull, entry->ent.ent_lba_end);
356 case 1: /* This must be the HFS+ partition. */
357 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_apple_hfs))
359 error = gpt_write_mbr_entry(table->mbr, index, 0xaf,
360 entry->ent.ent_lba_start, entry->ent.ent_lba_end);
363 typ = gpt_map_type(&entry->ent.ent_type);
364 error = gpt_write_mbr_entry(table->mbr, index, typ,
365 entry->ent.ent_lba_start, entry->ent.ent_lba_end);
371 if (index == bootable)
372 table->mbr[DOSPARTOFF + DOSPARTSIZE * index] = 0x80;
373 slices |= 1 << index;
375 if ((slices & 3) == 3)
380 gpt_create_pmbr(table, pp);
383 static struct gpt_hdr *
384 gpt_read_hdr(struct g_part_gpt_table *table, struct g_consumer *cp,
387 struct gpt_hdr *buf, *hdr;
388 struct g_provider *pp;
394 last = (pp->mediasize / pp->sectorsize) - 1;
395 table->state[elt] = GPT_STATE_MISSING;
397 * If the primary header is valid look for secondary
398 * header in AlternateLBA, otherwise in the last medium's LBA.
400 if (elt == GPT_ELT_SECHDR) {
401 if (table->state[GPT_ELT_PRIHDR] != GPT_STATE_OK)
402 table->lba[elt] = last;
405 buf = g_read_data(cp, table->lba[elt] * pp->sectorsize, pp->sectorsize,
410 if (memcmp(buf->hdr_sig, GPT_HDR_SIG, sizeof(buf->hdr_sig)) != 0)
413 table->state[elt] = GPT_STATE_CORRUPT;
414 sz = le32toh(buf->hdr_size);
415 if (sz < 92 || sz > pp->sectorsize)
418 hdr = g_malloc(sz, M_WAITOK | M_ZERO);
422 crc = le32toh(buf->hdr_crc_self);
423 buf->hdr_crc_self = 0;
424 if (crc32(buf, sz) != crc)
426 hdr->hdr_crc_self = crc;
428 table->state[elt] = GPT_STATE_INVALID;
429 hdr->hdr_revision = le32toh(buf->hdr_revision);
430 if (hdr->hdr_revision < GPT_HDR_REVISION)
432 hdr->hdr_lba_self = le64toh(buf->hdr_lba_self);
433 if (hdr->hdr_lba_self != table->lba[elt])
435 hdr->hdr_lba_alt = le64toh(buf->hdr_lba_alt);
436 if (hdr->hdr_lba_alt == hdr->hdr_lba_self ||
437 hdr->hdr_lba_alt > last)
440 /* Check the managed area. */
441 hdr->hdr_lba_start = le64toh(buf->hdr_lba_start);
442 if (hdr->hdr_lba_start < 2 || hdr->hdr_lba_start >= last)
444 hdr->hdr_lba_end = le64toh(buf->hdr_lba_end);
445 if (hdr->hdr_lba_end < hdr->hdr_lba_start || hdr->hdr_lba_end >= last)
448 /* Check the table location and size of the table. */
449 hdr->hdr_entries = le32toh(buf->hdr_entries);
450 hdr->hdr_entsz = le32toh(buf->hdr_entsz);
451 if (hdr->hdr_entries == 0 || hdr->hdr_entsz < 128 ||
452 (hdr->hdr_entsz & 7) != 0)
454 hdr->hdr_lba_table = le64toh(buf->hdr_lba_table);
455 if (hdr->hdr_lba_table < 2 || hdr->hdr_lba_table >= last)
457 if (hdr->hdr_lba_table >= hdr->hdr_lba_start &&
458 hdr->hdr_lba_table <= hdr->hdr_lba_end)
460 lba = hdr->hdr_lba_table +
461 (hdr->hdr_entries * hdr->hdr_entsz + pp->sectorsize - 1) /
465 if (lba >= hdr->hdr_lba_start && lba <= hdr->hdr_lba_end)
468 table->state[elt] = GPT_STATE_OK;
469 le_uuid_dec(&buf->hdr_uuid, &hdr->hdr_uuid);
470 hdr->hdr_crc_table = le32toh(buf->hdr_crc_table);
472 /* save LBA for secondary header */
473 if (elt == GPT_ELT_PRIHDR)
474 table->lba[GPT_ELT_SECHDR] = hdr->hdr_lba_alt;
486 static struct gpt_ent *
487 gpt_read_tbl(struct g_part_gpt_table *table, struct g_consumer *cp,
488 enum gpt_elt elt, struct gpt_hdr *hdr)
490 struct g_provider *pp;
491 struct gpt_ent *ent, *tbl;
493 unsigned int idx, sectors, tblsz, size;
500 table->lba[elt] = hdr->hdr_lba_table;
502 table->state[elt] = GPT_STATE_MISSING;
503 tblsz = hdr->hdr_entries * hdr->hdr_entsz;
504 sectors = (tblsz + pp->sectorsize - 1) / pp->sectorsize;
505 buf = g_malloc(sectors * pp->sectorsize, M_WAITOK | M_ZERO);
506 for (idx = 0; idx < sectors; idx += MAXPHYS / pp->sectorsize) {
507 size = (sectors - idx > MAXPHYS / pp->sectorsize) ? MAXPHYS:
508 (sectors - idx) * pp->sectorsize;
509 p = g_read_data(cp, (table->lba[elt] + idx) * pp->sectorsize,
515 bcopy(p, buf + idx * pp->sectorsize, size);
518 table->state[elt] = GPT_STATE_CORRUPT;
519 if (crc32(buf, tblsz) != hdr->hdr_crc_table) {
524 table->state[elt] = GPT_STATE_OK;
525 tbl = g_malloc(hdr->hdr_entries * sizeof(struct gpt_ent),
528 for (idx = 0, ent = tbl, p = buf;
529 idx < hdr->hdr_entries;
530 idx++, ent++, p += hdr->hdr_entsz) {
531 le_uuid_dec(p, &ent->ent_type);
532 le_uuid_dec(p + 16, &ent->ent_uuid);
533 ent->ent_lba_start = le64dec(p + 32);
534 ent->ent_lba_end = le64dec(p + 40);
535 ent->ent_attr = le64dec(p + 48);
536 /* Keep UTF-16 in little-endian. */
537 bcopy(p + 56, ent->ent_name, sizeof(ent->ent_name));
545 gpt_matched_hdrs(struct gpt_hdr *pri, struct gpt_hdr *sec)
548 if (pri == NULL || sec == NULL)
551 if (!EQUUID(&pri->hdr_uuid, &sec->hdr_uuid))
553 return ((pri->hdr_revision == sec->hdr_revision &&
554 pri->hdr_size == sec->hdr_size &&
555 pri->hdr_lba_start == sec->hdr_lba_start &&
556 pri->hdr_lba_end == sec->hdr_lba_end &&
557 pri->hdr_entries == sec->hdr_entries &&
558 pri->hdr_entsz == sec->hdr_entsz &&
559 pri->hdr_crc_table == sec->hdr_crc_table) ? 1 : 0);
563 gpt_parse_type(const char *type, struct uuid *uuid)
568 struct g_part_uuid_alias *uap;
570 if (type[0] == '!') {
571 error = parse_uuid(type + 1, &tmp);
574 if (EQUUID(&tmp, &gpt_uuid_unused))
579 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) {
580 alias = g_part_alias_name(uap->alias);
581 if (!strcasecmp(type, alias)) {
590 g_part_gpt_add(struct g_part_table *basetable, struct g_part_entry *baseentry,
591 struct g_part_parms *gpp)
593 struct g_part_gpt_entry *entry;
596 entry = (struct g_part_gpt_entry *)baseentry;
597 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type);
600 kern_uuidgen(&entry->ent.ent_uuid, 1);
601 entry->ent.ent_lba_start = baseentry->gpe_start;
602 entry->ent.ent_lba_end = baseentry->gpe_end;
603 if (baseentry->gpe_deleted) {
604 entry->ent.ent_attr = 0;
605 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name));
607 if (gpp->gpp_parms & G_PART_PARM_LABEL)
608 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name,
609 sizeof(entry->ent.ent_name) /
610 sizeof(entry->ent.ent_name[0]));
615 g_part_gpt_bootcode(struct g_part_table *basetable, struct g_part_parms *gpp)
617 struct g_part_gpt_table *table;
621 table = (struct g_part_gpt_table *)basetable;
622 bzero(table->mbr, codesz);
623 codesz = MIN(codesz, gpp->gpp_codesize);
625 bcopy(gpp->gpp_codeptr, table->mbr, codesz);
630 g_part_gpt_create(struct g_part_table *basetable, struct g_part_parms *gpp)
632 struct g_provider *pp;
633 struct g_part_gpt_table *table;
636 /* We don't nest, which means that our depth should be 0. */
637 if (basetable->gpt_depth != 0)
640 table = (struct g_part_gpt_table *)basetable;
641 pp = gpp->gpp_provider;
642 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) +
643 pp->sectorsize - 1) / pp->sectorsize;
644 if (pp->sectorsize < MBRSIZE ||
645 pp->mediasize < (3 + 2 * tblsz + basetable->gpt_entries) *
649 gpt_create_pmbr(table, pp);
651 /* Allocate space for the header */
652 table->hdr = g_malloc(sizeof(struct gpt_hdr), M_WAITOK | M_ZERO);
654 bcopy(GPT_HDR_SIG, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig));
655 table->hdr->hdr_revision = GPT_HDR_REVISION;
656 table->hdr->hdr_size = offsetof(struct gpt_hdr, padding);
657 kern_uuidgen(&table->hdr->hdr_uuid, 1);
658 table->hdr->hdr_entries = basetable->gpt_entries;
659 table->hdr->hdr_entsz = sizeof(struct gpt_ent);
661 g_gpt_set_defaults(basetable, pp);
666 g_part_gpt_destroy(struct g_part_table *basetable, struct g_part_parms *gpp)
668 struct g_part_gpt_table *table;
669 struct g_provider *pp;
671 table = (struct g_part_gpt_table *)basetable;
672 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
677 * Wipe the first 2 sectors to clear the partitioning. Wipe the last
678 * sector only if it has valid secondary header.
680 basetable->gpt_smhead |= 3;
681 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK &&
682 table->lba[GPT_ELT_SECHDR] == pp->mediasize / pp->sectorsize - 1)
683 basetable->gpt_smtail |= 1;
688 g_part_gpt_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry,
689 struct sbuf *sb, const char *indent)
691 struct g_part_gpt_entry *entry;
693 entry = (struct g_part_gpt_entry *)baseentry;
694 if (indent == NULL) {
695 /* conftxt: libdisk compatibility */
696 sbuf_printf(sb, " xs GPT xt ");
697 sbuf_printf_uuid(sb, &entry->ent.ent_type);
698 } else if (entry != NULL) {
699 /* confxml: partition entry information */
700 sbuf_printf(sb, "%s<label>", indent);
701 g_gpt_printf_utf16(sb, entry->ent.ent_name,
702 sizeof(entry->ent.ent_name) >> 1);
703 sbuf_printf(sb, "</label>\n");
704 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTME)
705 sbuf_printf(sb, "%s<attrib>bootme</attrib>\n", indent);
706 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTONCE) {
707 sbuf_printf(sb, "%s<attrib>bootonce</attrib>\n",
710 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTFAILED) {
711 sbuf_printf(sb, "%s<attrib>bootfailed</attrib>\n",
714 sbuf_printf(sb, "%s<rawtype>", indent);
715 sbuf_printf_uuid(sb, &entry->ent.ent_type);
716 sbuf_printf(sb, "</rawtype>\n");
717 sbuf_printf(sb, "%s<rawuuid>", indent);
718 sbuf_printf_uuid(sb, &entry->ent.ent_uuid);
719 sbuf_printf(sb, "</rawuuid>\n");
721 /* confxml: scheme information */
726 g_part_gpt_dumpto(struct g_part_table *table, struct g_part_entry *baseentry)
728 struct g_part_gpt_entry *entry;
730 entry = (struct g_part_gpt_entry *)baseentry;
731 return ((EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd_swap) ||
732 EQUUID(&entry->ent.ent_type, &gpt_uuid_linux_swap) ||
733 EQUUID(&entry->ent.ent_type, &gpt_uuid_dfbsd_swap)) ? 1 : 0);
737 g_part_gpt_modify(struct g_part_table *basetable,
738 struct g_part_entry *baseentry, struct g_part_parms *gpp)
740 struct g_part_gpt_entry *entry;
743 entry = (struct g_part_gpt_entry *)baseentry;
744 if (gpp->gpp_parms & G_PART_PARM_TYPE) {
745 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type);
749 if (gpp->gpp_parms & G_PART_PARM_LABEL)
750 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name,
751 sizeof(entry->ent.ent_name) /
752 sizeof(entry->ent.ent_name[0]));
757 g_part_gpt_resize(struct g_part_table *basetable,
758 struct g_part_entry *baseentry, struct g_part_parms *gpp)
760 struct g_part_gpt_entry *entry;
762 if (baseentry == NULL)
763 return (g_part_gpt_recover(basetable));
765 entry = (struct g_part_gpt_entry *)baseentry;
766 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1;
767 entry->ent.ent_lba_end = baseentry->gpe_end;
773 g_part_gpt_name(struct g_part_table *table, struct g_part_entry *baseentry,
774 char *buf, size_t bufsz)
776 struct g_part_gpt_entry *entry;
779 entry = (struct g_part_gpt_entry *)baseentry;
780 c = (EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd)) ? 's' : 'p';
781 snprintf(buf, bufsz, "%c%d", c, baseentry->gpe_index);
786 g_part_gpt_probe(struct g_part_table *table, struct g_consumer *cp)
788 struct g_provider *pp;
790 int error, index, pri, res;
792 /* We don't nest, which means that our depth should be 0. */
793 if (table->gpt_depth != 0)
799 * Sanity-check the provider. Since the first sector on the provider
800 * must be a PMBR and a PMBR is 512 bytes large, the sector size
801 * must be at least 512 bytes. Also, since the theoretical minimum
802 * number of sectors needed by GPT is 6, any medium that has less
803 * than 6 sectors is never going to be able to hold a GPT. The
804 * number 6 comes from:
805 * 1 sector for the PMBR
806 * 2 sectors for the GPT headers (each 1 sector)
807 * 2 sectors for the GPT tables (each 1 sector)
808 * 1 sector for an actual partition
809 * It's better to catch this pathological case early than behaving
810 * pathologically later on...
812 if (pp->sectorsize < MBRSIZE || pp->mediasize < 6 * pp->sectorsize)
816 * Check that there's a MBR or a PMBR. If it's a PMBR, we return
817 * as the highest priority on a match, otherwise we assume some
818 * GPT-unaware tool has destroyed the GPT by recreating a MBR and
819 * we really want the MBR scheme to take precedence.
821 buf = g_read_data(cp, 0L, pp->sectorsize, &error);
824 res = le16dec(buf + DOSMAGICOFFSET);
825 pri = G_PART_PROBE_PRI_LOW;
826 for (index = 0; index < NDOSPART; index++) {
827 if (buf[DOSPARTOFF + DOSPARTSIZE * index + 4] == 0xee)
828 pri = G_PART_PROBE_PRI_HIGH;
834 /* Check that there's a primary header. */
835 buf = g_read_data(cp, pp->sectorsize, pp->sectorsize, &error);
838 res = memcmp(buf, GPT_HDR_SIG, 8);
843 /* No primary? Check that there's a secondary. */
844 buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
848 res = memcmp(buf, GPT_HDR_SIG, 8);
850 return ((res == 0) ? pri : ENXIO);
854 g_part_gpt_read(struct g_part_table *basetable, struct g_consumer *cp)
856 struct gpt_hdr *prihdr, *sechdr;
857 struct gpt_ent *tbl, *pritbl, *sectbl;
858 struct g_provider *pp;
859 struct g_part_gpt_table *table;
860 struct g_part_gpt_entry *entry;
865 table = (struct g_part_gpt_table *)basetable;
867 last = (pp->mediasize / pp->sectorsize) - 1;
870 buf = g_read_data(cp, 0, pp->sectorsize, &error);
873 bcopy(buf, table->mbr, MBRSIZE);
876 /* Read the primary header and table. */
877 prihdr = gpt_read_hdr(table, cp, GPT_ELT_PRIHDR);
878 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK) {
879 pritbl = gpt_read_tbl(table, cp, GPT_ELT_PRITBL, prihdr);
881 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING;
885 /* Read the secondary header and table. */
886 sechdr = gpt_read_hdr(table, cp, GPT_ELT_SECHDR);
887 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK) {
888 sectbl = gpt_read_tbl(table, cp, GPT_ELT_SECTBL, sechdr);
890 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING;
894 /* Fail if we haven't got any good tables at all. */
895 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK &&
896 table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) {
897 printf("GEOM: %s: corrupt or invalid GPT detected.\n",
899 printf("GEOM: %s: GPT rejected -- may not be recoverable.\n",
905 * If both headers are good but they disagree with each other,
906 * then invalidate one. We prefer to keep the primary header,
907 * unless the primary table is corrupt.
909 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK &&
910 table->state[GPT_ELT_SECHDR] == GPT_STATE_OK &&
911 !gpt_matched_hdrs(prihdr, sechdr)) {
912 if (table->state[GPT_ELT_PRITBL] == GPT_STATE_OK) {
913 table->state[GPT_ELT_SECHDR] = GPT_STATE_INVALID;
914 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING;
918 table->state[GPT_ELT_PRIHDR] = GPT_STATE_INVALID;
919 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING;
925 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK) {
926 printf("GEOM: %s: the primary GPT table is corrupt or "
927 "invalid.\n", pp->name);
928 printf("GEOM: %s: using the secondary instead -- recovery "
929 "strongly advised.\n", pp->name);
931 basetable->gpt_corrupt = 1;
938 if (table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) {
939 printf("GEOM: %s: the secondary GPT table is corrupt "
940 "or invalid.\n", pp->name);
941 printf("GEOM: %s: using the primary only -- recovery "
942 "suggested.\n", pp->name);
943 basetable->gpt_corrupt = 1;
944 } else if (table->lba[GPT_ELT_SECHDR] != last) {
945 printf( "GEOM: %s: the secondary GPT header is not in "
946 "the last LBA.\n", pp->name);
947 basetable->gpt_corrupt = 1;
957 basetable->gpt_first = table->hdr->hdr_lba_start;
958 basetable->gpt_last = table->hdr->hdr_lba_end;
959 basetable->gpt_entries = (table->hdr->hdr_lba_start - 2) *
960 pp->sectorsize / table->hdr->hdr_entsz;
962 for (index = table->hdr->hdr_entries - 1; index >= 0; index--) {
963 if (EQUUID(&tbl[index].ent_type, &gpt_uuid_unused))
965 entry = (struct g_part_gpt_entry *)g_part_new_entry(
966 basetable, index + 1, tbl[index].ent_lba_start,
967 tbl[index].ent_lba_end);
968 entry->ent = tbl[index];
974 * Under Mac OS X, the MBR mirrors the first 4 GPT partitions
975 * if (and only if) any FAT32 or FAT16 partitions have been
976 * created. This happens irrespective of whether Boot Camp is
977 * used/enabled, though it's generally understood to be done
978 * to support legacy Windows under Boot Camp. We refer to this
979 * mirroring simply as Boot Camp. We try to detect Boot Camp
980 * so that we can update the MBR if and when GPT changes have
981 * been made. Note that we do not enable Boot Camp if not
982 * previously enabled because we can't assume that we're on a
983 * Mac alongside Mac OS X.
985 table->bootcamp = gpt_is_bootcamp(table, pp->name);
991 g_part_gpt_recover(struct g_part_table *basetable)
993 struct g_part_gpt_table *table;
994 struct g_provider *pp;
996 table = (struct g_part_gpt_table *)basetable;
997 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
998 gpt_create_pmbr(table, pp);
999 g_gpt_set_defaults(basetable, pp);
1000 basetable->gpt_corrupt = 0;
1005 g_part_gpt_setunset(struct g_part_table *basetable,
1006 struct g_part_entry *baseentry, const char *attrib, unsigned int set)
1008 struct g_part_gpt_entry *entry;
1009 struct g_part_gpt_table *table;
1010 struct g_provider *pp;
1015 table = (struct g_part_gpt_table *)basetable;
1016 entry = (struct g_part_gpt_entry *)baseentry;
1018 if (strcasecmp(attrib, "active") == 0) {
1019 if (table->bootcamp) {
1020 /* The active flag must be set on a valid entry. */
1023 if (baseentry->gpe_index > NDOSPART)
1025 for (i = 0; i < NDOSPART; i++) {
1026 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE];
1027 p[0] = (i == baseentry->gpe_index - 1)
1028 ? ((set) ? 0x80 : 0) : 0;
1031 /* The PMBR is marked as active without an entry. */
1034 for (i = 0; i < NDOSPART; i++) {
1035 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE];
1036 p[0] = (p[4] == 0xee) ? ((set) ? 0x80 : 0) : 0;
1040 } else if (strcasecmp(attrib, "lenovofix") == 0) {
1042 * Write the 0xee GPT entry to slot #1 (2nd slot) in the pMBR.
1043 * This workaround allows Lenovo X220, T420, T520, etc to boot
1044 * from GPT Partitions in BIOS mode.
1050 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
1051 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
1052 gpt_write_mbr_entry(table->mbr, ((set) ? 1 : 0), 0xee, 1,
1053 MIN(pp->mediasize / pp->sectorsize - 1, UINT32_MAX));
1061 if (strcasecmp(attrib, "bootme") == 0) {
1062 attr |= GPT_ENT_ATTR_BOOTME;
1063 } else if (strcasecmp(attrib, "bootonce") == 0) {
1064 attr |= GPT_ENT_ATTR_BOOTONCE;
1066 attr |= GPT_ENT_ATTR_BOOTME;
1067 } else if (strcasecmp(attrib, "bootfailed") == 0) {
1069 * It should only be possible to unset BOOTFAILED, but it might
1070 * be useful for test purposes to also be able to set it.
1072 attr |= GPT_ENT_ATTR_BOOTFAILED;
1078 attr = entry->ent.ent_attr | attr;
1080 attr = entry->ent.ent_attr & ~attr;
1081 if (attr != entry->ent.ent_attr) {
1082 entry->ent.ent_attr = attr;
1083 if (!baseentry->gpe_created)
1084 baseentry->gpe_modified = 1;
1090 g_part_gpt_type(struct g_part_table *basetable, struct g_part_entry *baseentry,
1091 char *buf, size_t bufsz)
1093 struct g_part_gpt_entry *entry;
1095 struct g_part_uuid_alias *uap;
1097 entry = (struct g_part_gpt_entry *)baseentry;
1098 type = &entry->ent.ent_type;
1099 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++)
1100 if (EQUUID(type, uap->uuid))
1101 return (g_part_alias_name(uap->alias));
1103 snprintf_uuid(buf + 1, bufsz - 1, type);
1109 g_part_gpt_write(struct g_part_table *basetable, struct g_consumer *cp)
1111 unsigned char *buf, *bp;
1112 struct g_provider *pp;
1113 struct g_part_entry *baseentry;
1114 struct g_part_gpt_entry *entry;
1115 struct g_part_gpt_table *table;
1121 table = (struct g_part_gpt_table *)basetable;
1122 tblsz = (table->hdr->hdr_entries * table->hdr->hdr_entsz +
1123 pp->sectorsize - 1) / pp->sectorsize;
1125 /* Reconstruct the MBR from the GPT if under Boot Camp. */
1126 if (table->bootcamp)
1127 gpt_update_bootcamp(basetable, pp);
1129 /* Write the PMBR */
1130 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO);
1131 bcopy(table->mbr, buf, MBRSIZE);
1132 error = g_write_data(cp, 0, buf, pp->sectorsize);
1137 /* Allocate space for the header and entries. */
1138 buf = g_malloc((tblsz + 1) * pp->sectorsize, M_WAITOK | M_ZERO);
1140 memcpy(buf, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig));
1141 le32enc(buf + 8, table->hdr->hdr_revision);
1142 le32enc(buf + 12, table->hdr->hdr_size);
1143 le64enc(buf + 40, table->hdr->hdr_lba_start);
1144 le64enc(buf + 48, table->hdr->hdr_lba_end);
1145 le_uuid_enc(buf + 56, &table->hdr->hdr_uuid);
1146 le32enc(buf + 80, table->hdr->hdr_entries);
1147 le32enc(buf + 84, table->hdr->hdr_entsz);
1149 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) {
1150 if (baseentry->gpe_deleted)
1152 entry = (struct g_part_gpt_entry *)baseentry;
1153 index = baseentry->gpe_index - 1;
1154 bp = buf + pp->sectorsize + table->hdr->hdr_entsz * index;
1155 le_uuid_enc(bp, &entry->ent.ent_type);
1156 le_uuid_enc(bp + 16, &entry->ent.ent_uuid);
1157 le64enc(bp + 32, entry->ent.ent_lba_start);
1158 le64enc(bp + 40, entry->ent.ent_lba_end);
1159 le64enc(bp + 48, entry->ent.ent_attr);
1160 memcpy(bp + 56, entry->ent.ent_name,
1161 sizeof(entry->ent.ent_name));
1164 crc = crc32(buf + pp->sectorsize,
1165 table->hdr->hdr_entries * table->hdr->hdr_entsz);
1166 le32enc(buf + 88, crc);
1168 /* Write primary meta-data. */
1169 le32enc(buf + 16, 0); /* hdr_crc_self. */
1170 le64enc(buf + 24, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_self. */
1171 le64enc(buf + 32, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_alt. */
1172 le64enc(buf + 72, table->lba[GPT_ELT_PRITBL]); /* hdr_lba_table. */
1173 crc = crc32(buf, table->hdr->hdr_size);
1174 le32enc(buf + 16, crc);
1176 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) {
1177 error = g_write_data(cp,
1178 (table->lba[GPT_ELT_PRITBL] + index) * pp->sectorsize,
1179 buf + (index + 1) * pp->sectorsize,
1180 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS:
1181 (tblsz - index) * pp->sectorsize);
1185 error = g_write_data(cp, table->lba[GPT_ELT_PRIHDR] * pp->sectorsize,
1186 buf, pp->sectorsize);
1190 /* Write secondary meta-data. */
1191 le32enc(buf + 16, 0); /* hdr_crc_self. */
1192 le64enc(buf + 24, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_self. */
1193 le64enc(buf + 32, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_alt. */
1194 le64enc(buf + 72, table->lba[GPT_ELT_SECTBL]); /* hdr_lba_table. */
1195 crc = crc32(buf, table->hdr->hdr_size);
1196 le32enc(buf + 16, crc);
1198 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) {
1199 error = g_write_data(cp,
1200 (table->lba[GPT_ELT_SECTBL] + index) * pp->sectorsize,
1201 buf + (index + 1) * pp->sectorsize,
1202 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS:
1203 (tblsz - index) * pp->sectorsize);
1207 error = g_write_data(cp, table->lba[GPT_ELT_SECHDR] * pp->sectorsize,
1208 buf, pp->sectorsize);
1216 g_gpt_set_defaults(struct g_part_table *basetable, struct g_provider *pp)
1218 struct g_part_gpt_table *table;
1222 table = (struct g_part_gpt_table *)basetable;
1223 last = pp->mediasize / pp->sectorsize - 1;
1224 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) +
1225 pp->sectorsize - 1) / pp->sectorsize;
1227 table->lba[GPT_ELT_PRIHDR] = 1;
1228 table->lba[GPT_ELT_PRITBL] = 2;
1229 table->lba[GPT_ELT_SECHDR] = last;
1230 table->lba[GPT_ELT_SECTBL] = last - tblsz;
1231 table->state[GPT_ELT_PRIHDR] = GPT_STATE_OK;
1232 table->state[GPT_ELT_PRITBL] = GPT_STATE_OK;
1233 table->state[GPT_ELT_SECHDR] = GPT_STATE_OK;
1234 table->state[GPT_ELT_SECTBL] = GPT_STATE_OK;
1236 table->hdr->hdr_lba_start = 2 + tblsz;
1237 table->hdr->hdr_lba_end = last - tblsz - 1;
1239 basetable->gpt_first = table->hdr->hdr_lba_start;
1240 basetable->gpt_last = table->hdr->hdr_lba_end;
1244 g_gpt_printf_utf16(struct sbuf *sb, uint16_t *str, size_t len)
1250 bo = LITTLE_ENDIAN; /* GPT is little-endian */
1251 while (len > 0 && *str != 0) {
1252 ch = (bo == BIG_ENDIAN) ? be16toh(*str) : le16toh(*str);
1254 if ((ch & 0xf800) == 0xd800) {
1256 c = (bo == BIG_ENDIAN) ? be16toh(*str)
1261 if ((ch & 0x400) == 0 && (c & 0xfc00) == 0xdc00) {
1262 ch = ((ch & 0x3ff) << 10) + (c & 0x3ff);
1266 } else if (ch == 0xfffe) { /* BOM (U+FEFF) swapped. */
1267 bo = (bo == BIG_ENDIAN) ? LITTLE_ENDIAN : BIG_ENDIAN;
1269 } else if (ch == 0xfeff) /* BOM (U+FEFF) unswapped. */
1272 /* Write the Unicode character in UTF-8 */
1274 g_conf_printf_escaped(sb, "%c", ch);
1275 else if (ch < 0x800)
1276 g_conf_printf_escaped(sb, "%c%c", 0xc0 | (ch >> 6),
1277 0x80 | (ch & 0x3f));
1278 else if (ch < 0x10000)
1279 g_conf_printf_escaped(sb, "%c%c%c", 0xe0 | (ch >> 12),
1280 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f));
1281 else if (ch < 0x200000)
1282 g_conf_printf_escaped(sb, "%c%c%c%c", 0xf0 |
1283 (ch >> 18), 0x80 | ((ch >> 12) & 0x3f),
1284 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f));
1289 g_gpt_utf8_to_utf16(const uint8_t *s8, uint16_t *s16, size_t s16len)
1291 size_t s16idx, s8idx;
1293 unsigned int c, utfbytes;
1298 bzero(s16, s16len << 1);
1299 while (s8[s8idx] != 0 && s16idx < s16len) {
1301 if ((c & 0xc0) != 0x80) {
1302 /* Initial characters. */
1303 if (utfbytes != 0) {
1304 /* Incomplete encoding of previous char. */
1305 s16[s16idx++] = htole16(0xfffd);
1307 if ((c & 0xf8) == 0xf0) {
1310 } else if ((c & 0xf0) == 0xe0) {
1313 } else if ((c & 0xe0) == 0xc0) {
1321 /* Followup characters. */
1323 utfchar = (utfchar << 6) + (c & 0x3f);
1325 } else if (utfbytes == 0)
1329 * Write the complete Unicode character as UTF-16 when we
1330 * have all the UTF-8 charactars collected.
1332 if (utfbytes == 0) {
1334 * If we need to write 2 UTF-16 characters, but
1335 * we only have room for 1, then we truncate the
1336 * string by writing a 0 instead.
1338 if (utfchar >= 0x10000 && s16idx < s16len - 1) {
1340 htole16(0xd800 | ((utfchar >> 10) - 0x40));
1342 htole16(0xdc00 | (utfchar & 0x3ff));
1344 s16[s16idx++] = (utfchar >= 0x10000) ? 0 :
1349 * If our input string was truncated, append an invalid encoding
1350 * character to the output string.
1352 if (utfbytes != 0 && s16idx < s16len)
1353 s16[s16idx++] = htole16(0xfffd);