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_hfs = GPT_ENT_TYPE_APPLE_HFS;
150 static struct uuid gpt_uuid_apple_label = GPT_ENT_TYPE_APPLE_LABEL;
151 static struct uuid gpt_uuid_apple_raid = GPT_ENT_TYPE_APPLE_RAID;
152 static struct uuid gpt_uuid_apple_raid_offline = GPT_ENT_TYPE_APPLE_RAID_OFFLINE;
153 static struct uuid gpt_uuid_apple_tv_recovery = GPT_ENT_TYPE_APPLE_TV_RECOVERY;
154 static struct uuid gpt_uuid_apple_ufs = GPT_ENT_TYPE_APPLE_UFS;
155 static struct uuid gpt_uuid_bios_boot = GPT_ENT_TYPE_BIOS_BOOT;
156 static struct uuid gpt_uuid_efi = GPT_ENT_TYPE_EFI;
157 static struct uuid gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD;
158 static struct uuid gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT;
159 static struct uuid gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS;
160 static struct uuid gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP;
161 static struct uuid gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS;
162 static struct uuid gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
163 static struct uuid gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
164 static struct uuid gpt_uuid_linux_data = GPT_ENT_TYPE_LINUX_DATA;
165 static struct uuid gpt_uuid_linux_lvm = GPT_ENT_TYPE_LINUX_LVM;
166 static struct uuid gpt_uuid_linux_raid = GPT_ENT_TYPE_LINUX_RAID;
167 static struct uuid gpt_uuid_linux_swap = GPT_ENT_TYPE_LINUX_SWAP;
168 static struct uuid gpt_uuid_vmfs = GPT_ENT_TYPE_VMFS;
169 static struct uuid gpt_uuid_vmkdiag = GPT_ENT_TYPE_VMKDIAG;
170 static struct uuid gpt_uuid_vmreserved = GPT_ENT_TYPE_VMRESERVED;
171 static struct uuid gpt_uuid_vmvsanhdr = GPT_ENT_TYPE_VMVSANHDR;
172 static struct uuid gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA;
173 static struct uuid gpt_uuid_ms_reserved = GPT_ENT_TYPE_MS_RESERVED;
174 static struct uuid gpt_uuid_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA;
175 static struct uuid gpt_uuid_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA;
176 static struct uuid gpt_uuid_netbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD;
177 static struct uuid gpt_uuid_netbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD;
178 static struct uuid gpt_uuid_netbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS;
179 static struct uuid gpt_uuid_netbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS;
180 static struct uuid gpt_uuid_netbsd_raid = GPT_ENT_TYPE_NETBSD_RAID;
181 static struct uuid gpt_uuid_netbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP;
182 static struct uuid gpt_uuid_mbr = GPT_ENT_TYPE_MBR;
183 static struct uuid gpt_uuid_unused = GPT_ENT_TYPE_UNUSED;
184 static struct uuid gpt_uuid_dfbsd_swap = GPT_ENT_TYPE_DRAGONFLY_SWAP;
185 static struct uuid gpt_uuid_dfbsd_ufs1 = GPT_ENT_TYPE_DRAGONFLY_UFS1;
186 static struct uuid gpt_uuid_dfbsd_vinum = GPT_ENT_TYPE_DRAGONFLY_VINUM;
187 static struct uuid gpt_uuid_dfbsd_ccd = GPT_ENT_TYPE_DRAGONFLY_CCD;
188 static struct uuid gpt_uuid_dfbsd_legacy = GPT_ENT_TYPE_DRAGONFLY_LEGACY;
189 static struct uuid gpt_uuid_dfbsd_hammer = GPT_ENT_TYPE_DRAGONFLY_HAMMER;
190 static struct uuid gpt_uuid_dfbsd_hammer2 = GPT_ENT_TYPE_DRAGONFLY_HAMMER2;
191 static struct uuid gpt_uuid_dfbsd_label32 = GPT_ENT_TYPE_DRAGONFLY_LABEL32;
192 static struct uuid gpt_uuid_dfbsd_label64 = GPT_ENT_TYPE_DRAGONFLY_LABEL64;
193 static struct uuid gpt_uuid_prep_boot = GPT_ENT_TYPE_PREP_BOOT;
195 static struct g_part_uuid_alias {
199 } gpt_uuid_alias_match[] = {
200 { &gpt_uuid_apple_boot, G_PART_ALIAS_APPLE_BOOT, 0xab },
201 { &gpt_uuid_apple_hfs, G_PART_ALIAS_APPLE_HFS, 0xaf },
202 { &gpt_uuid_apple_label, G_PART_ALIAS_APPLE_LABEL, 0 },
203 { &gpt_uuid_apple_raid, G_PART_ALIAS_APPLE_RAID, 0 },
204 { &gpt_uuid_apple_raid_offline, G_PART_ALIAS_APPLE_RAID_OFFLINE, 0 },
205 { &gpt_uuid_apple_tv_recovery, G_PART_ALIAS_APPLE_TV_RECOVERY, 0 },
206 { &gpt_uuid_apple_ufs, G_PART_ALIAS_APPLE_UFS, 0 },
207 { &gpt_uuid_bios_boot, G_PART_ALIAS_BIOS_BOOT, 0 },
208 { &gpt_uuid_efi, G_PART_ALIAS_EFI, 0xee },
209 { &gpt_uuid_freebsd, G_PART_ALIAS_FREEBSD, 0xa5 },
210 { &gpt_uuid_freebsd_boot, G_PART_ALIAS_FREEBSD_BOOT, 0 },
211 { &gpt_uuid_freebsd_nandfs, G_PART_ALIAS_FREEBSD_NANDFS, 0 },
212 { &gpt_uuid_freebsd_swap, G_PART_ALIAS_FREEBSD_SWAP, 0 },
213 { &gpt_uuid_freebsd_ufs, G_PART_ALIAS_FREEBSD_UFS, 0 },
214 { &gpt_uuid_freebsd_vinum, G_PART_ALIAS_FREEBSD_VINUM, 0 },
215 { &gpt_uuid_freebsd_zfs, G_PART_ALIAS_FREEBSD_ZFS, 0 },
216 { &gpt_uuid_linux_data, G_PART_ALIAS_LINUX_DATA, 0x0b },
217 { &gpt_uuid_linux_lvm, G_PART_ALIAS_LINUX_LVM, 0 },
218 { &gpt_uuid_linux_raid, G_PART_ALIAS_LINUX_RAID, 0 },
219 { &gpt_uuid_linux_swap, G_PART_ALIAS_LINUX_SWAP, 0 },
220 { &gpt_uuid_vmfs, G_PART_ALIAS_VMFS, 0 },
221 { &gpt_uuid_vmkdiag, G_PART_ALIAS_VMKDIAG, 0 },
222 { &gpt_uuid_vmreserved, G_PART_ALIAS_VMRESERVED, 0 },
223 { &gpt_uuid_vmvsanhdr, G_PART_ALIAS_VMVSANHDR, 0 },
224 { &gpt_uuid_mbr, G_PART_ALIAS_MBR, 0 },
225 { &gpt_uuid_ms_basic_data, G_PART_ALIAS_MS_BASIC_DATA, 0x0b },
226 { &gpt_uuid_ms_ldm_data, G_PART_ALIAS_MS_LDM_DATA, 0 },
227 { &gpt_uuid_ms_ldm_metadata, G_PART_ALIAS_MS_LDM_METADATA, 0 },
228 { &gpt_uuid_ms_reserved, G_PART_ALIAS_MS_RESERVED, 0 },
229 { &gpt_uuid_netbsd_ccd, G_PART_ALIAS_NETBSD_CCD, 0 },
230 { &gpt_uuid_netbsd_cgd, G_PART_ALIAS_NETBSD_CGD, 0 },
231 { &gpt_uuid_netbsd_ffs, G_PART_ALIAS_NETBSD_FFS, 0 },
232 { &gpt_uuid_netbsd_lfs, G_PART_ALIAS_NETBSD_LFS, 0 },
233 { &gpt_uuid_netbsd_raid, G_PART_ALIAS_NETBSD_RAID, 0 },
234 { &gpt_uuid_netbsd_swap, G_PART_ALIAS_NETBSD_SWAP, 0 },
235 { &gpt_uuid_dfbsd_swap, G_PART_ALIAS_DFBSD_SWAP, 0 },
236 { &gpt_uuid_dfbsd_ufs1, G_PART_ALIAS_DFBSD_UFS, 0 },
237 { &gpt_uuid_dfbsd_vinum, G_PART_ALIAS_DFBSD_VINUM, 0 },
238 { &gpt_uuid_dfbsd_ccd, G_PART_ALIAS_DFBSD_CCD, 0 },
239 { &gpt_uuid_dfbsd_legacy, G_PART_ALIAS_DFBSD_LEGACY, 0 },
240 { &gpt_uuid_dfbsd_hammer, G_PART_ALIAS_DFBSD_HAMMER, 0 },
241 { &gpt_uuid_dfbsd_hammer2, G_PART_ALIAS_DFBSD_HAMMER2, 0 },
242 { &gpt_uuid_dfbsd_label32, G_PART_ALIAS_DFBSD, 0xa5 },
243 { &gpt_uuid_dfbsd_label64, G_PART_ALIAS_DFBSD64, 0xa5 },
244 { &gpt_uuid_prep_boot, G_PART_ALIAS_PREP_BOOT, 0x41 },
249 gpt_write_mbr_entry(u_char *mbr, int idx, int typ, quad_t start,
253 if (typ == 0 || start > UINT32_MAX || end > UINT32_MAX)
256 mbr += DOSPARTOFF + idx * DOSPARTSIZE;
260 * Treat the PMBR partition specially to maximize
261 * interoperability with BIOSes.
266 mbr[1] = mbr[2] = mbr[3] = 0xff;
268 mbr[5] = mbr[6] = mbr[7] = 0xff;
269 le32enc(mbr + 8, (uint32_t)start);
270 le32enc(mbr + 12, (uint32_t)(end - start + 1));
275 gpt_map_type(struct uuid *t)
277 struct g_part_uuid_alias *uap;
279 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) {
280 if (EQUUID(t, uap->uuid))
281 return (uap->mbrtype);
287 gpt_create_pmbr(struct g_part_gpt_table *table, struct g_provider *pp)
290 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
291 gpt_write_mbr_entry(table->mbr, 0, 0xee, 1,
292 MIN(pp->mediasize / pp->sectorsize - 1, UINT32_MAX));
293 le16enc(table->mbr + DOSMAGICOFFSET, DOSMAGIC);
297 * Under Boot Camp the PMBR partition (type 0xEE) doesn't cover the
298 * whole disk anymore. Rather, it covers the GPT table and the EFI
299 * system partition only. This way the HFS+ partition and any FAT
300 * partitions can be added to the MBR without creating an overlap.
303 gpt_is_bootcamp(struct g_part_gpt_table *table, const char *provname)
307 p = table->mbr + DOSPARTOFF;
308 if (p[4] != 0xee || le32dec(p + 8) != 1)
315 printf("GEOM: %s: enabling Boot Camp\n", provname);
320 gpt_update_bootcamp(struct g_part_table *basetable, struct g_provider *pp)
322 struct g_part_entry *baseentry;
323 struct g_part_gpt_entry *entry;
324 struct g_part_gpt_table *table;
325 int bootable, error, index, slices, typ;
327 table = (struct g_part_gpt_table *)basetable;
330 for (index = 0; index < NDOSPART; index++) {
331 if (table->mbr[DOSPARTOFF + DOSPARTSIZE * index])
335 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
337 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) {
338 if (baseentry->gpe_deleted)
340 index = baseentry->gpe_index - 1;
341 if (index >= NDOSPART)
344 entry = (struct g_part_gpt_entry *)baseentry;
347 case 0: /* This must be the EFI system partition. */
348 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_efi))
350 error = gpt_write_mbr_entry(table->mbr, index, 0xee,
351 1ull, entry->ent.ent_lba_end);
353 case 1: /* This must be the HFS+ partition. */
354 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_apple_hfs))
356 error = gpt_write_mbr_entry(table->mbr, index, 0xaf,
357 entry->ent.ent_lba_start, entry->ent.ent_lba_end);
360 typ = gpt_map_type(&entry->ent.ent_type);
361 error = gpt_write_mbr_entry(table->mbr, index, typ,
362 entry->ent.ent_lba_start, entry->ent.ent_lba_end);
368 if (index == bootable)
369 table->mbr[DOSPARTOFF + DOSPARTSIZE * index] = 0x80;
370 slices |= 1 << index;
372 if ((slices & 3) == 3)
377 gpt_create_pmbr(table, pp);
380 static struct gpt_hdr *
381 gpt_read_hdr(struct g_part_gpt_table *table, struct g_consumer *cp,
384 struct gpt_hdr *buf, *hdr;
385 struct g_provider *pp;
391 last = (pp->mediasize / pp->sectorsize) - 1;
392 table->state[elt] = GPT_STATE_MISSING;
394 * If the primary header is valid look for secondary
395 * header in AlternateLBA, otherwise in the last medium's LBA.
397 if (elt == GPT_ELT_SECHDR) {
398 if (table->state[GPT_ELT_PRIHDR] != GPT_STATE_OK)
399 table->lba[elt] = last;
402 buf = g_read_data(cp, table->lba[elt] * pp->sectorsize, pp->sectorsize,
407 if (memcmp(buf->hdr_sig, GPT_HDR_SIG, sizeof(buf->hdr_sig)) != 0)
410 table->state[elt] = GPT_STATE_CORRUPT;
411 sz = le32toh(buf->hdr_size);
412 if (sz < 92 || sz > pp->sectorsize)
415 hdr = g_malloc(sz, M_WAITOK | M_ZERO);
419 crc = le32toh(buf->hdr_crc_self);
420 buf->hdr_crc_self = 0;
421 if (crc32(buf, sz) != crc)
423 hdr->hdr_crc_self = crc;
425 table->state[elt] = GPT_STATE_INVALID;
426 hdr->hdr_revision = le32toh(buf->hdr_revision);
427 if (hdr->hdr_revision < GPT_HDR_REVISION)
429 hdr->hdr_lba_self = le64toh(buf->hdr_lba_self);
430 if (hdr->hdr_lba_self != table->lba[elt])
432 hdr->hdr_lba_alt = le64toh(buf->hdr_lba_alt);
433 if (hdr->hdr_lba_alt == hdr->hdr_lba_self ||
434 hdr->hdr_lba_alt > last)
437 /* Check the managed area. */
438 hdr->hdr_lba_start = le64toh(buf->hdr_lba_start);
439 if (hdr->hdr_lba_start < 2 || hdr->hdr_lba_start >= last)
441 hdr->hdr_lba_end = le64toh(buf->hdr_lba_end);
442 if (hdr->hdr_lba_end < hdr->hdr_lba_start || hdr->hdr_lba_end >= last)
445 /* Check the table location and size of the table. */
446 hdr->hdr_entries = le32toh(buf->hdr_entries);
447 hdr->hdr_entsz = le32toh(buf->hdr_entsz);
448 if (hdr->hdr_entries == 0 || hdr->hdr_entsz < 128 ||
449 (hdr->hdr_entsz & 7) != 0)
451 hdr->hdr_lba_table = le64toh(buf->hdr_lba_table);
452 if (hdr->hdr_lba_table < 2 || hdr->hdr_lba_table >= last)
454 if (hdr->hdr_lba_table >= hdr->hdr_lba_start &&
455 hdr->hdr_lba_table <= hdr->hdr_lba_end)
457 lba = hdr->hdr_lba_table +
458 (hdr->hdr_entries * hdr->hdr_entsz + pp->sectorsize - 1) /
462 if (lba >= hdr->hdr_lba_start && lba <= hdr->hdr_lba_end)
465 table->state[elt] = GPT_STATE_OK;
466 le_uuid_dec(&buf->hdr_uuid, &hdr->hdr_uuid);
467 hdr->hdr_crc_table = le32toh(buf->hdr_crc_table);
469 /* save LBA for secondary header */
470 if (elt == GPT_ELT_PRIHDR)
471 table->lba[GPT_ELT_SECHDR] = hdr->hdr_lba_alt;
483 static struct gpt_ent *
484 gpt_read_tbl(struct g_part_gpt_table *table, struct g_consumer *cp,
485 enum gpt_elt elt, struct gpt_hdr *hdr)
487 struct g_provider *pp;
488 struct gpt_ent *ent, *tbl;
490 unsigned int idx, sectors, tblsz, size;
497 table->lba[elt] = hdr->hdr_lba_table;
499 table->state[elt] = GPT_STATE_MISSING;
500 tblsz = hdr->hdr_entries * hdr->hdr_entsz;
501 sectors = (tblsz + pp->sectorsize - 1) / pp->sectorsize;
502 buf = g_malloc(sectors * pp->sectorsize, M_WAITOK | M_ZERO);
503 for (idx = 0; idx < sectors; idx += MAXPHYS / pp->sectorsize) {
504 size = (sectors - idx > MAXPHYS / pp->sectorsize) ? MAXPHYS:
505 (sectors - idx) * pp->sectorsize;
506 p = g_read_data(cp, (table->lba[elt] + idx) * pp->sectorsize,
512 bcopy(p, buf + idx * pp->sectorsize, size);
515 table->state[elt] = GPT_STATE_CORRUPT;
516 if (crc32(buf, tblsz) != hdr->hdr_crc_table) {
521 table->state[elt] = GPT_STATE_OK;
522 tbl = g_malloc(hdr->hdr_entries * sizeof(struct gpt_ent),
525 for (idx = 0, ent = tbl, p = buf;
526 idx < hdr->hdr_entries;
527 idx++, ent++, p += hdr->hdr_entsz) {
528 le_uuid_dec(p, &ent->ent_type);
529 le_uuid_dec(p + 16, &ent->ent_uuid);
530 ent->ent_lba_start = le64dec(p + 32);
531 ent->ent_lba_end = le64dec(p + 40);
532 ent->ent_attr = le64dec(p + 48);
533 /* Keep UTF-16 in little-endian. */
534 bcopy(p + 56, ent->ent_name, sizeof(ent->ent_name));
542 gpt_matched_hdrs(struct gpt_hdr *pri, struct gpt_hdr *sec)
545 if (pri == NULL || sec == NULL)
548 if (!EQUUID(&pri->hdr_uuid, &sec->hdr_uuid))
550 return ((pri->hdr_revision == sec->hdr_revision &&
551 pri->hdr_size == sec->hdr_size &&
552 pri->hdr_lba_start == sec->hdr_lba_start &&
553 pri->hdr_lba_end == sec->hdr_lba_end &&
554 pri->hdr_entries == sec->hdr_entries &&
555 pri->hdr_entsz == sec->hdr_entsz &&
556 pri->hdr_crc_table == sec->hdr_crc_table) ? 1 : 0);
560 gpt_parse_type(const char *type, struct uuid *uuid)
565 struct g_part_uuid_alias *uap;
567 if (type[0] == '!') {
568 error = parse_uuid(type + 1, &tmp);
571 if (EQUUID(&tmp, &gpt_uuid_unused))
576 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) {
577 alias = g_part_alias_name(uap->alias);
578 if (!strcasecmp(type, alias)) {
587 g_part_gpt_add(struct g_part_table *basetable, struct g_part_entry *baseentry,
588 struct g_part_parms *gpp)
590 struct g_part_gpt_entry *entry;
593 entry = (struct g_part_gpt_entry *)baseentry;
594 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type);
597 kern_uuidgen(&entry->ent.ent_uuid, 1);
598 entry->ent.ent_lba_start = baseentry->gpe_start;
599 entry->ent.ent_lba_end = baseentry->gpe_end;
600 if (baseentry->gpe_deleted) {
601 entry->ent.ent_attr = 0;
602 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name));
604 if (gpp->gpp_parms & G_PART_PARM_LABEL)
605 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name,
606 sizeof(entry->ent.ent_name) /
607 sizeof(entry->ent.ent_name[0]));
612 g_part_gpt_bootcode(struct g_part_table *basetable, struct g_part_parms *gpp)
614 struct g_part_gpt_table *table;
618 table = (struct g_part_gpt_table *)basetable;
619 bzero(table->mbr, codesz);
620 codesz = MIN(codesz, gpp->gpp_codesize);
622 bcopy(gpp->gpp_codeptr, table->mbr, codesz);
627 g_part_gpt_create(struct g_part_table *basetable, struct g_part_parms *gpp)
629 struct g_provider *pp;
630 struct g_part_gpt_table *table;
633 /* We don't nest, which means that our depth should be 0. */
634 if (basetable->gpt_depth != 0)
637 table = (struct g_part_gpt_table *)basetable;
638 pp = gpp->gpp_provider;
639 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) +
640 pp->sectorsize - 1) / pp->sectorsize;
641 if (pp->sectorsize < MBRSIZE ||
642 pp->mediasize < (3 + 2 * tblsz + basetable->gpt_entries) *
646 gpt_create_pmbr(table, pp);
648 /* Allocate space for the header */
649 table->hdr = g_malloc(sizeof(struct gpt_hdr), M_WAITOK | M_ZERO);
651 bcopy(GPT_HDR_SIG, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig));
652 table->hdr->hdr_revision = GPT_HDR_REVISION;
653 table->hdr->hdr_size = offsetof(struct gpt_hdr, padding);
654 kern_uuidgen(&table->hdr->hdr_uuid, 1);
655 table->hdr->hdr_entries = basetable->gpt_entries;
656 table->hdr->hdr_entsz = sizeof(struct gpt_ent);
658 g_gpt_set_defaults(basetable, pp);
663 g_part_gpt_destroy(struct g_part_table *basetable, struct g_part_parms *gpp)
665 struct g_part_gpt_table *table;
666 struct g_provider *pp;
668 table = (struct g_part_gpt_table *)basetable;
669 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
674 * Wipe the first 2 sectors to clear the partitioning. Wipe the last
675 * sector only if it has valid secondary header.
677 basetable->gpt_smhead |= 3;
678 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK &&
679 table->lba[GPT_ELT_SECHDR] == pp->mediasize / pp->sectorsize - 1)
680 basetable->gpt_smtail |= 1;
685 g_part_gpt_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry,
686 struct sbuf *sb, const char *indent)
688 struct g_part_gpt_entry *entry;
690 entry = (struct g_part_gpt_entry *)baseentry;
691 if (indent == NULL) {
692 /* conftxt: libdisk compatibility */
693 sbuf_printf(sb, " xs GPT xt ");
694 sbuf_printf_uuid(sb, &entry->ent.ent_type);
695 } else if (entry != NULL) {
696 /* confxml: partition entry information */
697 sbuf_printf(sb, "%s<label>", indent);
698 g_gpt_printf_utf16(sb, entry->ent.ent_name,
699 sizeof(entry->ent.ent_name) >> 1);
700 sbuf_printf(sb, "</label>\n");
701 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTME)
702 sbuf_printf(sb, "%s<attrib>bootme</attrib>\n", indent);
703 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTONCE) {
704 sbuf_printf(sb, "%s<attrib>bootonce</attrib>\n",
707 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTFAILED) {
708 sbuf_printf(sb, "%s<attrib>bootfailed</attrib>\n",
711 sbuf_printf(sb, "%s<rawtype>", indent);
712 sbuf_printf_uuid(sb, &entry->ent.ent_type);
713 sbuf_printf(sb, "</rawtype>\n");
714 sbuf_printf(sb, "%s<rawuuid>", indent);
715 sbuf_printf_uuid(sb, &entry->ent.ent_uuid);
716 sbuf_printf(sb, "</rawuuid>\n");
718 /* confxml: scheme information */
723 g_part_gpt_dumpto(struct g_part_table *table, struct g_part_entry *baseentry)
725 struct g_part_gpt_entry *entry;
727 entry = (struct g_part_gpt_entry *)baseentry;
728 return ((EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd_swap) ||
729 EQUUID(&entry->ent.ent_type, &gpt_uuid_linux_swap) ||
730 EQUUID(&entry->ent.ent_type, &gpt_uuid_dfbsd_swap)) ? 1 : 0);
734 g_part_gpt_modify(struct g_part_table *basetable,
735 struct g_part_entry *baseentry, struct g_part_parms *gpp)
737 struct g_part_gpt_entry *entry;
740 entry = (struct g_part_gpt_entry *)baseentry;
741 if (gpp->gpp_parms & G_PART_PARM_TYPE) {
742 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type);
746 if (gpp->gpp_parms & G_PART_PARM_LABEL)
747 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name,
748 sizeof(entry->ent.ent_name) /
749 sizeof(entry->ent.ent_name[0]));
754 g_part_gpt_resize(struct g_part_table *basetable,
755 struct g_part_entry *baseentry, struct g_part_parms *gpp)
757 struct g_part_gpt_entry *entry;
759 if (baseentry == NULL)
762 entry = (struct g_part_gpt_entry *)baseentry;
763 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1;
764 entry->ent.ent_lba_end = baseentry->gpe_end;
770 g_part_gpt_name(struct g_part_table *table, struct g_part_entry *baseentry,
771 char *buf, size_t bufsz)
773 struct g_part_gpt_entry *entry;
776 entry = (struct g_part_gpt_entry *)baseentry;
777 c = (EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd)) ? 's' : 'p';
778 snprintf(buf, bufsz, "%c%d", c, baseentry->gpe_index);
783 g_part_gpt_probe(struct g_part_table *table, struct g_consumer *cp)
785 struct g_provider *pp;
787 int error, index, pri, res;
789 /* We don't nest, which means that our depth should be 0. */
790 if (table->gpt_depth != 0)
796 * Sanity-check the provider. Since the first sector on the provider
797 * must be a PMBR and a PMBR is 512 bytes large, the sector size
798 * must be at least 512 bytes. Also, since the theoretical minimum
799 * number of sectors needed by GPT is 6, any medium that has less
800 * than 6 sectors is never going to be able to hold a GPT. The
801 * number 6 comes from:
802 * 1 sector for the PMBR
803 * 2 sectors for the GPT headers (each 1 sector)
804 * 2 sectors for the GPT tables (each 1 sector)
805 * 1 sector for an actual partition
806 * It's better to catch this pathological case early than behaving
807 * pathologically later on...
809 if (pp->sectorsize < MBRSIZE || pp->mediasize < 6 * pp->sectorsize)
813 * Check that there's a MBR or a PMBR. If it's a PMBR, we return
814 * as the highest priority on a match, otherwise we assume some
815 * GPT-unaware tool has destroyed the GPT by recreating a MBR and
816 * we really want the MBR scheme to take precedence.
818 buf = g_read_data(cp, 0L, pp->sectorsize, &error);
821 res = le16dec(buf + DOSMAGICOFFSET);
822 pri = G_PART_PROBE_PRI_LOW;
823 for (index = 0; index < NDOSPART; index++) {
824 if (buf[DOSPARTOFF + DOSPARTSIZE * index + 4] == 0xee)
825 pri = G_PART_PROBE_PRI_HIGH;
831 /* Check that there's a primary header. */
832 buf = g_read_data(cp, pp->sectorsize, pp->sectorsize, &error);
835 res = memcmp(buf, GPT_HDR_SIG, 8);
840 /* No primary? Check that there's a secondary. */
841 buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
845 res = memcmp(buf, GPT_HDR_SIG, 8);
847 return ((res == 0) ? pri : ENXIO);
851 g_part_gpt_read(struct g_part_table *basetable, struct g_consumer *cp)
853 struct gpt_hdr *prihdr, *sechdr;
854 struct gpt_ent *tbl, *pritbl, *sectbl;
855 struct g_provider *pp;
856 struct g_part_gpt_table *table;
857 struct g_part_gpt_entry *entry;
862 table = (struct g_part_gpt_table *)basetable;
864 last = (pp->mediasize / pp->sectorsize) - 1;
867 buf = g_read_data(cp, 0, pp->sectorsize, &error);
870 bcopy(buf, table->mbr, MBRSIZE);
873 /* Read the primary header and table. */
874 prihdr = gpt_read_hdr(table, cp, GPT_ELT_PRIHDR);
875 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK) {
876 pritbl = gpt_read_tbl(table, cp, GPT_ELT_PRITBL, prihdr);
878 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING;
882 /* Read the secondary header and table. */
883 sechdr = gpt_read_hdr(table, cp, GPT_ELT_SECHDR);
884 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK) {
885 sectbl = gpt_read_tbl(table, cp, GPT_ELT_SECTBL, sechdr);
887 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING;
891 /* Fail if we haven't got any good tables at all. */
892 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK &&
893 table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) {
894 printf("GEOM: %s: corrupt or invalid GPT detected.\n",
896 printf("GEOM: %s: GPT rejected -- may not be recoverable.\n",
902 * If both headers are good but they disagree with each other,
903 * then invalidate one. We prefer to keep the primary header,
904 * unless the primary table is corrupt.
906 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK &&
907 table->state[GPT_ELT_SECHDR] == GPT_STATE_OK &&
908 !gpt_matched_hdrs(prihdr, sechdr)) {
909 if (table->state[GPT_ELT_PRITBL] == GPT_STATE_OK) {
910 table->state[GPT_ELT_SECHDR] = GPT_STATE_INVALID;
911 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING;
915 table->state[GPT_ELT_PRIHDR] = GPT_STATE_INVALID;
916 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING;
922 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK) {
923 printf("GEOM: %s: the primary GPT table is corrupt or "
924 "invalid.\n", pp->name);
925 printf("GEOM: %s: using the secondary instead -- recovery "
926 "strongly advised.\n", pp->name);
928 basetable->gpt_corrupt = 1;
935 if (table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) {
936 printf("GEOM: %s: the secondary GPT table is corrupt "
937 "or invalid.\n", pp->name);
938 printf("GEOM: %s: using the primary only -- recovery "
939 "suggested.\n", pp->name);
940 basetable->gpt_corrupt = 1;
941 } else if (table->lba[GPT_ELT_SECHDR] != last) {
942 printf( "GEOM: %s: the secondary GPT header is not in "
943 "the last LBA.\n", pp->name);
944 basetable->gpt_corrupt = 1;
954 basetable->gpt_first = table->hdr->hdr_lba_start;
955 basetable->gpt_last = table->hdr->hdr_lba_end;
956 basetable->gpt_entries = (table->hdr->hdr_lba_start - 2) *
957 pp->sectorsize / table->hdr->hdr_entsz;
959 for (index = table->hdr->hdr_entries - 1; index >= 0; index--) {
960 if (EQUUID(&tbl[index].ent_type, &gpt_uuid_unused))
962 entry = (struct g_part_gpt_entry *)g_part_new_entry(
963 basetable, index + 1, tbl[index].ent_lba_start,
964 tbl[index].ent_lba_end);
965 entry->ent = tbl[index];
971 * Under Mac OS X, the MBR mirrors the first 4 GPT partitions
972 * if (and only if) any FAT32 or FAT16 partitions have been
973 * created. This happens irrespective of whether Boot Camp is
974 * used/enabled, though it's generally understood to be done
975 * to support legacy Windows under Boot Camp. We refer to this
976 * mirroring simply as Boot Camp. We try to detect Boot Camp
977 * so that we can update the MBR if and when GPT changes have
978 * been made. Note that we do not enable Boot Camp if not
979 * previously enabled because we can't assume that we're on a
980 * Mac alongside Mac OS X.
982 table->bootcamp = gpt_is_bootcamp(table, pp->name);
988 g_part_gpt_recover(struct g_part_table *basetable)
990 struct g_part_gpt_table *table;
991 struct g_provider *pp;
993 table = (struct g_part_gpt_table *)basetable;
994 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
995 gpt_create_pmbr(table, pp);
996 g_gpt_set_defaults(basetable, pp);
997 basetable->gpt_corrupt = 0;
1002 g_part_gpt_setunset(struct g_part_table *basetable,
1003 struct g_part_entry *baseentry, const char *attrib, unsigned int set)
1005 struct g_part_gpt_entry *entry;
1006 struct g_part_gpt_table *table;
1011 table = (struct g_part_gpt_table *)basetable;
1012 entry = (struct g_part_gpt_entry *)baseentry;
1014 if (strcasecmp(attrib, "active") == 0) {
1015 if (table->bootcamp) {
1016 /* The active flag must be set on a valid entry. */
1019 if (baseentry->gpe_index > NDOSPART)
1021 for (i = 0; i < NDOSPART; i++) {
1022 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE];
1023 p[0] = (i == baseentry->gpe_index - 1)
1024 ? ((set) ? 0x80 : 0) : 0;
1027 /* The PMBR is marked as active without an entry. */
1030 for (i = 0; i < NDOSPART; i++) {
1031 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE];
1032 p[0] = (p[4] == 0xee) ? ((set) ? 0x80 : 0) : 0;
1042 if (strcasecmp(attrib, "bootme") == 0) {
1043 attr |= GPT_ENT_ATTR_BOOTME;
1044 } else if (strcasecmp(attrib, "bootonce") == 0) {
1045 attr |= GPT_ENT_ATTR_BOOTONCE;
1047 attr |= GPT_ENT_ATTR_BOOTME;
1048 } else if (strcasecmp(attrib, "bootfailed") == 0) {
1050 * It should only be possible to unset BOOTFAILED, but it might
1051 * be useful for test purposes to also be able to set it.
1053 attr |= GPT_ENT_ATTR_BOOTFAILED;
1059 attr = entry->ent.ent_attr | attr;
1061 attr = entry->ent.ent_attr & ~attr;
1062 if (attr != entry->ent.ent_attr) {
1063 entry->ent.ent_attr = attr;
1064 if (!baseentry->gpe_created)
1065 baseentry->gpe_modified = 1;
1071 g_part_gpt_type(struct g_part_table *basetable, struct g_part_entry *baseentry,
1072 char *buf, size_t bufsz)
1074 struct g_part_gpt_entry *entry;
1076 struct g_part_uuid_alias *uap;
1078 entry = (struct g_part_gpt_entry *)baseentry;
1079 type = &entry->ent.ent_type;
1080 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++)
1081 if (EQUUID(type, uap->uuid))
1082 return (g_part_alias_name(uap->alias));
1084 snprintf_uuid(buf + 1, bufsz - 1, type);
1090 g_part_gpt_write(struct g_part_table *basetable, struct g_consumer *cp)
1092 unsigned char *buf, *bp;
1093 struct g_provider *pp;
1094 struct g_part_entry *baseentry;
1095 struct g_part_gpt_entry *entry;
1096 struct g_part_gpt_table *table;
1102 table = (struct g_part_gpt_table *)basetable;
1103 tblsz = (table->hdr->hdr_entries * table->hdr->hdr_entsz +
1104 pp->sectorsize - 1) / pp->sectorsize;
1106 /* Reconstruct the MBR from the GPT if under Boot Camp. */
1107 if (table->bootcamp)
1108 gpt_update_bootcamp(basetable, pp);
1110 /* Write the PMBR */
1111 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO);
1112 bcopy(table->mbr, buf, MBRSIZE);
1113 error = g_write_data(cp, 0, buf, pp->sectorsize);
1118 /* Allocate space for the header and entries. */
1119 buf = g_malloc((tblsz + 1) * pp->sectorsize, M_WAITOK | M_ZERO);
1121 memcpy(buf, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig));
1122 le32enc(buf + 8, table->hdr->hdr_revision);
1123 le32enc(buf + 12, table->hdr->hdr_size);
1124 le64enc(buf + 40, table->hdr->hdr_lba_start);
1125 le64enc(buf + 48, table->hdr->hdr_lba_end);
1126 le_uuid_enc(buf + 56, &table->hdr->hdr_uuid);
1127 le32enc(buf + 80, table->hdr->hdr_entries);
1128 le32enc(buf + 84, table->hdr->hdr_entsz);
1130 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) {
1131 if (baseentry->gpe_deleted)
1133 entry = (struct g_part_gpt_entry *)baseentry;
1134 index = baseentry->gpe_index - 1;
1135 bp = buf + pp->sectorsize + table->hdr->hdr_entsz * index;
1136 le_uuid_enc(bp, &entry->ent.ent_type);
1137 le_uuid_enc(bp + 16, &entry->ent.ent_uuid);
1138 le64enc(bp + 32, entry->ent.ent_lba_start);
1139 le64enc(bp + 40, entry->ent.ent_lba_end);
1140 le64enc(bp + 48, entry->ent.ent_attr);
1141 memcpy(bp + 56, entry->ent.ent_name,
1142 sizeof(entry->ent.ent_name));
1145 crc = crc32(buf + pp->sectorsize,
1146 table->hdr->hdr_entries * table->hdr->hdr_entsz);
1147 le32enc(buf + 88, crc);
1149 /* Write primary meta-data. */
1150 le32enc(buf + 16, 0); /* hdr_crc_self. */
1151 le64enc(buf + 24, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_self. */
1152 le64enc(buf + 32, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_alt. */
1153 le64enc(buf + 72, table->lba[GPT_ELT_PRITBL]); /* hdr_lba_table. */
1154 crc = crc32(buf, table->hdr->hdr_size);
1155 le32enc(buf + 16, crc);
1157 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) {
1158 error = g_write_data(cp,
1159 (table->lba[GPT_ELT_PRITBL] + index) * pp->sectorsize,
1160 buf + (index + 1) * pp->sectorsize,
1161 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS:
1162 (tblsz - index) * pp->sectorsize);
1166 error = g_write_data(cp, table->lba[GPT_ELT_PRIHDR] * pp->sectorsize,
1167 buf, pp->sectorsize);
1171 /* Write secondary meta-data. */
1172 le32enc(buf + 16, 0); /* hdr_crc_self. */
1173 le64enc(buf + 24, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_self. */
1174 le64enc(buf + 32, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_alt. */
1175 le64enc(buf + 72, table->lba[GPT_ELT_SECTBL]); /* hdr_lba_table. */
1176 crc = crc32(buf, table->hdr->hdr_size);
1177 le32enc(buf + 16, crc);
1179 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) {
1180 error = g_write_data(cp,
1181 (table->lba[GPT_ELT_SECTBL] + index) * pp->sectorsize,
1182 buf + (index + 1) * pp->sectorsize,
1183 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS:
1184 (tblsz - index) * pp->sectorsize);
1188 error = g_write_data(cp, table->lba[GPT_ELT_SECHDR] * pp->sectorsize,
1189 buf, pp->sectorsize);
1197 g_gpt_set_defaults(struct g_part_table *basetable, struct g_provider *pp)
1199 struct g_part_gpt_table *table;
1203 table = (struct g_part_gpt_table *)basetable;
1204 last = pp->mediasize / pp->sectorsize - 1;
1205 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) +
1206 pp->sectorsize - 1) / pp->sectorsize;
1208 table->lba[GPT_ELT_PRIHDR] = 1;
1209 table->lba[GPT_ELT_PRITBL] = 2;
1210 table->lba[GPT_ELT_SECHDR] = last;
1211 table->lba[GPT_ELT_SECTBL] = last - tblsz;
1212 table->state[GPT_ELT_PRIHDR] = GPT_STATE_OK;
1213 table->state[GPT_ELT_PRITBL] = GPT_STATE_OK;
1214 table->state[GPT_ELT_SECHDR] = GPT_STATE_OK;
1215 table->state[GPT_ELT_SECTBL] = GPT_STATE_OK;
1217 table->hdr->hdr_lba_start = 2 + tblsz;
1218 table->hdr->hdr_lba_end = last - tblsz - 1;
1220 basetable->gpt_first = table->hdr->hdr_lba_start;
1221 basetable->gpt_last = table->hdr->hdr_lba_end;
1225 g_gpt_printf_utf16(struct sbuf *sb, uint16_t *str, size_t len)
1231 bo = LITTLE_ENDIAN; /* GPT is little-endian */
1232 while (len > 0 && *str != 0) {
1233 ch = (bo == BIG_ENDIAN) ? be16toh(*str) : le16toh(*str);
1235 if ((ch & 0xf800) == 0xd800) {
1237 c = (bo == BIG_ENDIAN) ? be16toh(*str)
1242 if ((ch & 0x400) == 0 && (c & 0xfc00) == 0xdc00) {
1243 ch = ((ch & 0x3ff) << 10) + (c & 0x3ff);
1247 } else if (ch == 0xfffe) { /* BOM (U+FEFF) swapped. */
1248 bo = (bo == BIG_ENDIAN) ? LITTLE_ENDIAN : BIG_ENDIAN;
1250 } else if (ch == 0xfeff) /* BOM (U+FEFF) unswapped. */
1253 /* Write the Unicode character in UTF-8 */
1255 g_conf_printf_escaped(sb, "%c", ch);
1256 else if (ch < 0x800)
1257 g_conf_printf_escaped(sb, "%c%c", 0xc0 | (ch >> 6),
1258 0x80 | (ch & 0x3f));
1259 else if (ch < 0x10000)
1260 g_conf_printf_escaped(sb, "%c%c%c", 0xe0 | (ch >> 12),
1261 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f));
1262 else if (ch < 0x200000)
1263 g_conf_printf_escaped(sb, "%c%c%c%c", 0xf0 |
1264 (ch >> 18), 0x80 | ((ch >> 12) & 0x3f),
1265 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f));
1270 g_gpt_utf8_to_utf16(const uint8_t *s8, uint16_t *s16, size_t s16len)
1272 size_t s16idx, s8idx;
1274 unsigned int c, utfbytes;
1279 bzero(s16, s16len << 1);
1280 while (s8[s8idx] != 0 && s16idx < s16len) {
1282 if ((c & 0xc0) != 0x80) {
1283 /* Initial characters. */
1284 if (utfbytes != 0) {
1285 /* Incomplete encoding of previous char. */
1286 s16[s16idx++] = htole16(0xfffd);
1288 if ((c & 0xf8) == 0xf0) {
1291 } else if ((c & 0xf0) == 0xe0) {
1294 } else if ((c & 0xe0) == 0xc0) {
1302 /* Followup characters. */
1304 utfchar = (utfchar << 6) + (c & 0x3f);
1306 } else if (utfbytes == 0)
1310 * Write the complete Unicode character as UTF-16 when we
1311 * have all the UTF-8 charactars collected.
1313 if (utfbytes == 0) {
1315 * If we need to write 2 UTF-16 characters, but
1316 * we only have room for 1, then we truncate the
1317 * string by writing a 0 instead.
1319 if (utfchar >= 0x10000 && s16idx < s16len - 1) {
1321 htole16(0xd800 | ((utfchar >> 10) - 0x40));
1323 htole16(0xdc00 | (utfchar & 0x3ff));
1325 s16[s16idx++] = (utfchar >= 0x10000) ? 0 :
1330 * If our input string was truncated, append an invalid encoding
1331 * character to the output string.
1333 if (utfbytes != 0 && s16idx < s16len)
1334 s16[s16idx++] = htole16(0xfffd);