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/part/g_part.h>
49 #include "g_part_if.h"
51 FEATURE(geom_part_gpt, "GEOM partitioning class for GPT partitions support");
53 CTASSERT(offsetof(struct gpt_hdr, padding) == 92);
54 CTASSERT(sizeof(struct gpt_ent) == 128);
56 #define EQUUID(a,b) (memcmp(a, b, sizeof(struct uuid)) == 0)
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. */
76 struct g_part_gpt_table {
77 struct g_part_table base;
80 quad_t lba[GPT_ELT_COUNT];
81 enum gpt_state state[GPT_ELT_COUNT];
85 struct g_part_gpt_entry {
86 struct g_part_entry base;
90 static void g_gpt_printf_utf16(struct sbuf *, uint16_t *, size_t);
91 static void g_gpt_utf8_to_utf16(const uint8_t *, uint16_t *, size_t);
92 static void g_gpt_set_defaults(struct g_part_table *, struct g_provider *);
94 static int g_part_gpt_add(struct g_part_table *, struct g_part_entry *,
95 struct g_part_parms *);
96 static int g_part_gpt_bootcode(struct g_part_table *, struct g_part_parms *);
97 static int g_part_gpt_create(struct g_part_table *, struct g_part_parms *);
98 static int g_part_gpt_destroy(struct g_part_table *, struct g_part_parms *);
99 static void g_part_gpt_dumpconf(struct g_part_table *, struct g_part_entry *,
100 struct sbuf *, const char *);
101 static int g_part_gpt_dumpto(struct g_part_table *, struct g_part_entry *);
102 static int g_part_gpt_modify(struct g_part_table *, struct g_part_entry *,
103 struct g_part_parms *);
104 static const char *g_part_gpt_name(struct g_part_table *, struct g_part_entry *,
106 static int g_part_gpt_probe(struct g_part_table *, struct g_consumer *);
107 static int g_part_gpt_read(struct g_part_table *, struct g_consumer *);
108 static int g_part_gpt_setunset(struct g_part_table *table,
109 struct g_part_entry *baseentry, const char *attrib, unsigned int set);
110 static const char *g_part_gpt_type(struct g_part_table *, struct g_part_entry *,
112 static int g_part_gpt_write(struct g_part_table *, struct g_consumer *);
113 static int g_part_gpt_resize(struct g_part_table *, struct g_part_entry *,
114 struct g_part_parms *);
115 static int g_part_gpt_recover(struct g_part_table *);
117 static 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),
136 static struct g_part_scheme g_part_gpt_scheme = {
139 sizeof(struct g_part_gpt_table),
140 .gps_entrysz = sizeof(struct g_part_gpt_entry),
143 .gps_bootcodesz = MBRSIZE,
145 G_PART_SCHEME_DECLARE(g_part_gpt);
147 static struct uuid gpt_uuid_apple_boot = GPT_ENT_TYPE_APPLE_BOOT;
148 static struct uuid gpt_uuid_apple_hfs = GPT_ENT_TYPE_APPLE_HFS;
149 static struct uuid gpt_uuid_apple_label = GPT_ENT_TYPE_APPLE_LABEL;
150 static struct uuid gpt_uuid_apple_raid = GPT_ENT_TYPE_APPLE_RAID;
151 static struct uuid gpt_uuid_apple_raid_offline = GPT_ENT_TYPE_APPLE_RAID_OFFLINE;
152 static struct uuid gpt_uuid_apple_tv_recovery = GPT_ENT_TYPE_APPLE_TV_RECOVERY;
153 static struct uuid gpt_uuid_apple_ufs = GPT_ENT_TYPE_APPLE_UFS;
154 static struct uuid gpt_uuid_bios_boot = GPT_ENT_TYPE_BIOS_BOOT;
155 static struct uuid gpt_uuid_efi = GPT_ENT_TYPE_EFI;
156 static struct uuid gpt_uuid_freebsd = GPT_ENT_TYPE_FREEBSD;
157 static struct uuid gpt_uuid_freebsd_boot = GPT_ENT_TYPE_FREEBSD_BOOT;
158 static struct uuid gpt_uuid_freebsd_nandfs = GPT_ENT_TYPE_FREEBSD_NANDFS;
159 static struct uuid gpt_uuid_freebsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP;
160 static struct uuid gpt_uuid_freebsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS;
161 static struct uuid gpt_uuid_freebsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
162 static struct uuid gpt_uuid_freebsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
163 static struct uuid gpt_uuid_linux_data = GPT_ENT_TYPE_LINUX_DATA;
164 static struct uuid gpt_uuid_linux_lvm = GPT_ENT_TYPE_LINUX_LVM;
165 static struct uuid gpt_uuid_linux_raid = GPT_ENT_TYPE_LINUX_RAID;
166 static struct uuid gpt_uuid_linux_swap = GPT_ENT_TYPE_LINUX_SWAP;
167 static struct uuid gpt_uuid_vmfs = GPT_ENT_TYPE_VMFS;
168 static struct uuid gpt_uuid_vmkdiag = GPT_ENT_TYPE_VMKDIAG;
169 static struct uuid gpt_uuid_vmreserved = GPT_ENT_TYPE_VMRESERVED;
170 static struct uuid gpt_uuid_vmvsanhdr = GPT_ENT_TYPE_VMVSANHDR;
171 static struct uuid gpt_uuid_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA;
172 static struct uuid gpt_uuid_ms_reserved = GPT_ENT_TYPE_MS_RESERVED;
173 static struct uuid gpt_uuid_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA;
174 static struct uuid gpt_uuid_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA;
175 static struct uuid gpt_uuid_netbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD;
176 static struct uuid gpt_uuid_netbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD;
177 static struct uuid gpt_uuid_netbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS;
178 static struct uuid gpt_uuid_netbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS;
179 static struct uuid gpt_uuid_netbsd_raid = GPT_ENT_TYPE_NETBSD_RAID;
180 static struct uuid gpt_uuid_netbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP;
181 static struct uuid gpt_uuid_mbr = GPT_ENT_TYPE_MBR;
182 static struct uuid gpt_uuid_unused = GPT_ENT_TYPE_UNUSED;
184 static struct g_part_uuid_alias {
188 } gpt_uuid_alias_match[] = {
189 { &gpt_uuid_apple_boot, G_PART_ALIAS_APPLE_BOOT, 0xab },
190 { &gpt_uuid_apple_hfs, G_PART_ALIAS_APPLE_HFS, 0xaf },
191 { &gpt_uuid_apple_label, G_PART_ALIAS_APPLE_LABEL, 0 },
192 { &gpt_uuid_apple_raid, G_PART_ALIAS_APPLE_RAID, 0 },
193 { &gpt_uuid_apple_raid_offline, G_PART_ALIAS_APPLE_RAID_OFFLINE, 0 },
194 { &gpt_uuid_apple_tv_recovery, G_PART_ALIAS_APPLE_TV_RECOVERY, 0 },
195 { &gpt_uuid_apple_ufs, G_PART_ALIAS_APPLE_UFS, 0 },
196 { &gpt_uuid_bios_boot, G_PART_ALIAS_BIOS_BOOT, 0 },
197 { &gpt_uuid_efi, G_PART_ALIAS_EFI, 0xee },
198 { &gpt_uuid_freebsd, G_PART_ALIAS_FREEBSD, 0xa5 },
199 { &gpt_uuid_freebsd_boot, G_PART_ALIAS_FREEBSD_BOOT, 0 },
200 { &gpt_uuid_freebsd_nandfs, G_PART_ALIAS_FREEBSD_NANDFS, 0 },
201 { &gpt_uuid_freebsd_swap, G_PART_ALIAS_FREEBSD_SWAP, 0 },
202 { &gpt_uuid_freebsd_ufs, G_PART_ALIAS_FREEBSD_UFS, 0 },
203 { &gpt_uuid_freebsd_vinum, G_PART_ALIAS_FREEBSD_VINUM, 0 },
204 { &gpt_uuid_freebsd_zfs, G_PART_ALIAS_FREEBSD_ZFS, 0 },
205 { &gpt_uuid_linux_data, G_PART_ALIAS_LINUX_DATA, 0x0b },
206 { &gpt_uuid_linux_lvm, G_PART_ALIAS_LINUX_LVM, 0 },
207 { &gpt_uuid_linux_raid, G_PART_ALIAS_LINUX_RAID, 0 },
208 { &gpt_uuid_linux_swap, G_PART_ALIAS_LINUX_SWAP, 0 },
209 { &gpt_uuid_vmfs, G_PART_ALIAS_VMFS, 0 },
210 { &gpt_uuid_vmkdiag, G_PART_ALIAS_VMKDIAG, 0 },
211 { &gpt_uuid_vmreserved, G_PART_ALIAS_VMRESERVED, 0 },
212 { &gpt_uuid_vmvsanhdr, G_PART_ALIAS_VMVSANHDR, 0 },
213 { &gpt_uuid_mbr, G_PART_ALIAS_MBR, 0 },
214 { &gpt_uuid_ms_basic_data, G_PART_ALIAS_MS_BASIC_DATA, 0x0b },
215 { &gpt_uuid_ms_ldm_data, G_PART_ALIAS_MS_LDM_DATA, 0 },
216 { &gpt_uuid_ms_ldm_metadata, G_PART_ALIAS_MS_LDM_METADATA, 0 },
217 { &gpt_uuid_ms_reserved, G_PART_ALIAS_MS_RESERVED, 0 },
218 { &gpt_uuid_netbsd_ccd, G_PART_ALIAS_NETBSD_CCD, 0 },
219 { &gpt_uuid_netbsd_cgd, G_PART_ALIAS_NETBSD_CGD, 0 },
220 { &gpt_uuid_netbsd_ffs, G_PART_ALIAS_NETBSD_FFS, 0 },
221 { &gpt_uuid_netbsd_lfs, G_PART_ALIAS_NETBSD_LFS, 0 },
222 { &gpt_uuid_netbsd_raid, G_PART_ALIAS_NETBSD_RAID, 0 },
223 { &gpt_uuid_netbsd_swap, G_PART_ALIAS_NETBSD_SWAP, 0 },
228 gpt_write_mbr_entry(u_char *mbr, int idx, int typ, quad_t start,
232 if (typ == 0 || start > UINT32_MAX || end > UINT32_MAX)
235 mbr += DOSPARTOFF + idx * DOSPARTSIZE;
239 * Treat the PMBR partition specially to maximize
240 * interoperability with BIOSes.
245 mbr[1] = mbr[2] = mbr[3] = 0xff;
247 mbr[5] = mbr[6] = mbr[7] = 0xff;
248 le32enc(mbr + 8, (uint32_t)start);
249 le32enc(mbr + 12, (uint32_t)(end - start + 1));
254 gpt_map_type(struct uuid *t)
256 struct g_part_uuid_alias *uap;
258 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) {
259 if (EQUUID(t, uap->uuid))
260 return (uap->mbrtype);
266 gpt_create_pmbr(struct g_part_gpt_table *table, struct g_provider *pp)
269 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
270 gpt_write_mbr_entry(table->mbr, 0, 0xee, 1,
271 MIN(pp->mediasize / pp->sectorsize - 1, UINT32_MAX));
272 le16enc(table->mbr + DOSMAGICOFFSET, DOSMAGIC);
276 * Under Boot Camp the PMBR partition (type 0xEE) doesn't cover the
277 * whole disk anymore. Rather, it covers the GPT table and the EFI
278 * system partition only. This way the HFS+ partition and any FAT
279 * partitions can be added to the MBR without creating an overlap.
282 gpt_is_bootcamp(struct g_part_gpt_table *table, const char *provname)
286 p = table->mbr + DOSPARTOFF;
287 if (p[4] != 0xee || le32dec(p + 8) != 1)
294 printf("GEOM: %s: enabling Boot Camp\n", provname);
299 gpt_update_bootcamp(struct g_part_table *basetable, struct g_provider *pp)
301 struct g_part_entry *baseentry;
302 struct g_part_gpt_entry *entry;
303 struct g_part_gpt_table *table;
304 int bootable, error, index, slices, typ;
306 table = (struct g_part_gpt_table *)basetable;
309 for (index = 0; index < NDOSPART; index++) {
310 if (table->mbr[DOSPARTOFF + DOSPARTSIZE * index])
314 bzero(table->mbr + DOSPARTOFF, DOSPARTSIZE * NDOSPART);
316 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) {
317 if (baseentry->gpe_deleted)
319 index = baseentry->gpe_index - 1;
320 if (index >= NDOSPART)
323 entry = (struct g_part_gpt_entry *)baseentry;
326 case 0: /* This must be the EFI system partition. */
327 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_efi))
329 error = gpt_write_mbr_entry(table->mbr, index, 0xee,
330 1ull, entry->ent.ent_lba_end);
332 case 1: /* This must be the HFS+ partition. */
333 if (!EQUUID(&entry->ent.ent_type, &gpt_uuid_apple_hfs))
335 error = gpt_write_mbr_entry(table->mbr, index, 0xaf,
336 entry->ent.ent_lba_start, entry->ent.ent_lba_end);
339 typ = gpt_map_type(&entry->ent.ent_type);
340 error = gpt_write_mbr_entry(table->mbr, index, typ,
341 entry->ent.ent_lba_start, entry->ent.ent_lba_end);
347 if (index == bootable)
348 table->mbr[DOSPARTOFF + DOSPARTSIZE * index] = 0x80;
349 slices |= 1 << index;
351 if ((slices & 3) == 3)
356 gpt_create_pmbr(table, pp);
359 static struct gpt_hdr *
360 gpt_read_hdr(struct g_part_gpt_table *table, struct g_consumer *cp,
363 struct gpt_hdr *buf, *hdr;
364 struct g_provider *pp;
370 last = (pp->mediasize / pp->sectorsize) - 1;
371 table->state[elt] = GPT_STATE_MISSING;
373 * If the primary header is valid look for secondary
374 * header in AlternateLBA, otherwise in the last medium's LBA.
376 if (elt == GPT_ELT_SECHDR) {
377 if (table->state[GPT_ELT_PRIHDR] != GPT_STATE_OK)
378 table->lba[elt] = last;
381 buf = g_read_data(cp, table->lba[elt] * pp->sectorsize, pp->sectorsize,
386 if (memcmp(buf->hdr_sig, GPT_HDR_SIG, sizeof(buf->hdr_sig)) != 0)
389 table->state[elt] = GPT_STATE_CORRUPT;
390 sz = le32toh(buf->hdr_size);
391 if (sz < 92 || sz > pp->sectorsize)
394 hdr = g_malloc(sz, M_WAITOK | M_ZERO);
398 crc = le32toh(buf->hdr_crc_self);
399 buf->hdr_crc_self = 0;
400 if (crc32(buf, sz) != crc)
402 hdr->hdr_crc_self = crc;
404 table->state[elt] = GPT_STATE_INVALID;
405 hdr->hdr_revision = le32toh(buf->hdr_revision);
406 if (hdr->hdr_revision < GPT_HDR_REVISION)
408 hdr->hdr_lba_self = le64toh(buf->hdr_lba_self);
409 if (hdr->hdr_lba_self != table->lba[elt])
411 hdr->hdr_lba_alt = le64toh(buf->hdr_lba_alt);
412 if (hdr->hdr_lba_alt == hdr->hdr_lba_self ||
413 hdr->hdr_lba_alt > last)
416 /* Check the managed area. */
417 hdr->hdr_lba_start = le64toh(buf->hdr_lba_start);
418 if (hdr->hdr_lba_start < 2 || hdr->hdr_lba_start >= last)
420 hdr->hdr_lba_end = le64toh(buf->hdr_lba_end);
421 if (hdr->hdr_lba_end < hdr->hdr_lba_start || hdr->hdr_lba_end >= last)
424 /* Check the table location and size of the table. */
425 hdr->hdr_entries = le32toh(buf->hdr_entries);
426 hdr->hdr_entsz = le32toh(buf->hdr_entsz);
427 if (hdr->hdr_entries == 0 || hdr->hdr_entsz < 128 ||
428 (hdr->hdr_entsz & 7) != 0)
430 hdr->hdr_lba_table = le64toh(buf->hdr_lba_table);
431 if (hdr->hdr_lba_table < 2 || hdr->hdr_lba_table >= last)
433 if (hdr->hdr_lba_table >= hdr->hdr_lba_start &&
434 hdr->hdr_lba_table <= hdr->hdr_lba_end)
436 lba = hdr->hdr_lba_table +
437 (hdr->hdr_entries * hdr->hdr_entsz + pp->sectorsize - 1) /
441 if (lba >= hdr->hdr_lba_start && lba <= hdr->hdr_lba_end)
444 table->state[elt] = GPT_STATE_OK;
445 le_uuid_dec(&buf->hdr_uuid, &hdr->hdr_uuid);
446 hdr->hdr_crc_table = le32toh(buf->hdr_crc_table);
448 /* save LBA for secondary header */
449 if (elt == GPT_ELT_PRIHDR)
450 table->lba[GPT_ELT_SECHDR] = hdr->hdr_lba_alt;
462 static struct gpt_ent *
463 gpt_read_tbl(struct g_part_gpt_table *table, struct g_consumer *cp,
464 enum gpt_elt elt, struct gpt_hdr *hdr)
466 struct g_provider *pp;
467 struct gpt_ent *ent, *tbl;
469 unsigned int idx, sectors, tblsz, size;
476 table->lba[elt] = hdr->hdr_lba_table;
478 table->state[elt] = GPT_STATE_MISSING;
479 tblsz = hdr->hdr_entries * hdr->hdr_entsz;
480 sectors = (tblsz + pp->sectorsize - 1) / pp->sectorsize;
481 buf = g_malloc(sectors * pp->sectorsize, M_WAITOK | M_ZERO);
482 for (idx = 0; idx < sectors; idx += MAXPHYS / pp->sectorsize) {
483 size = (sectors - idx > MAXPHYS / pp->sectorsize) ? MAXPHYS:
484 (sectors - idx) * pp->sectorsize;
485 p = g_read_data(cp, (table->lba[elt] + idx) * pp->sectorsize,
491 bcopy(p, buf + idx * pp->sectorsize, size);
494 table->state[elt] = GPT_STATE_CORRUPT;
495 if (crc32(buf, tblsz) != hdr->hdr_crc_table) {
500 table->state[elt] = GPT_STATE_OK;
501 tbl = g_malloc(hdr->hdr_entries * sizeof(struct gpt_ent),
504 for (idx = 0, ent = tbl, p = buf;
505 idx < hdr->hdr_entries;
506 idx++, ent++, p += hdr->hdr_entsz) {
507 le_uuid_dec(p, &ent->ent_type);
508 le_uuid_dec(p + 16, &ent->ent_uuid);
509 ent->ent_lba_start = le64dec(p + 32);
510 ent->ent_lba_end = le64dec(p + 40);
511 ent->ent_attr = le64dec(p + 48);
512 /* Keep UTF-16 in little-endian. */
513 bcopy(p + 56, ent->ent_name, sizeof(ent->ent_name));
521 gpt_matched_hdrs(struct gpt_hdr *pri, struct gpt_hdr *sec)
524 if (pri == NULL || sec == NULL)
527 if (!EQUUID(&pri->hdr_uuid, &sec->hdr_uuid))
529 return ((pri->hdr_revision == sec->hdr_revision &&
530 pri->hdr_size == sec->hdr_size &&
531 pri->hdr_lba_start == sec->hdr_lba_start &&
532 pri->hdr_lba_end == sec->hdr_lba_end &&
533 pri->hdr_entries == sec->hdr_entries &&
534 pri->hdr_entsz == sec->hdr_entsz &&
535 pri->hdr_crc_table == sec->hdr_crc_table) ? 1 : 0);
539 gpt_parse_type(const char *type, struct uuid *uuid)
544 struct g_part_uuid_alias *uap;
546 if (type[0] == '!') {
547 error = parse_uuid(type + 1, &tmp);
550 if (EQUUID(&tmp, &gpt_uuid_unused))
555 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++) {
556 alias = g_part_alias_name(uap->alias);
557 if (!strcasecmp(type, alias)) {
566 g_part_gpt_add(struct g_part_table *basetable, struct g_part_entry *baseentry,
567 struct g_part_parms *gpp)
569 struct g_part_gpt_entry *entry;
572 entry = (struct g_part_gpt_entry *)baseentry;
573 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type);
576 kern_uuidgen(&entry->ent.ent_uuid, 1);
577 entry->ent.ent_lba_start = baseentry->gpe_start;
578 entry->ent.ent_lba_end = baseentry->gpe_end;
579 if (baseentry->gpe_deleted) {
580 entry->ent.ent_attr = 0;
581 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name));
583 if (gpp->gpp_parms & G_PART_PARM_LABEL)
584 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name,
585 sizeof(entry->ent.ent_name) /
586 sizeof(entry->ent.ent_name[0]));
591 g_part_gpt_bootcode(struct g_part_table *basetable, struct g_part_parms *gpp)
593 struct g_part_gpt_table *table;
597 table = (struct g_part_gpt_table *)basetable;
598 bzero(table->mbr, codesz);
599 codesz = MIN(codesz, gpp->gpp_codesize);
601 bcopy(gpp->gpp_codeptr, table->mbr, codesz);
606 g_part_gpt_create(struct g_part_table *basetable, struct g_part_parms *gpp)
608 struct g_provider *pp;
609 struct g_part_gpt_table *table;
612 /* We don't nest, which means that our depth should be 0. */
613 if (basetable->gpt_depth != 0)
616 table = (struct g_part_gpt_table *)basetable;
617 pp = gpp->gpp_provider;
618 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) +
619 pp->sectorsize - 1) / pp->sectorsize;
620 if (pp->sectorsize < MBRSIZE ||
621 pp->mediasize < (3 + 2 * tblsz + basetable->gpt_entries) *
625 gpt_create_pmbr(table, pp);
627 /* Allocate space for the header */
628 table->hdr = g_malloc(sizeof(struct gpt_hdr), M_WAITOK | M_ZERO);
630 bcopy(GPT_HDR_SIG, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig));
631 table->hdr->hdr_revision = GPT_HDR_REVISION;
632 table->hdr->hdr_size = offsetof(struct gpt_hdr, padding);
633 kern_uuidgen(&table->hdr->hdr_uuid, 1);
634 table->hdr->hdr_entries = basetable->gpt_entries;
635 table->hdr->hdr_entsz = sizeof(struct gpt_ent);
637 g_gpt_set_defaults(basetable, pp);
642 g_part_gpt_destroy(struct g_part_table *basetable, struct g_part_parms *gpp)
644 struct g_part_gpt_table *table;
645 struct g_provider *pp;
647 table = (struct g_part_gpt_table *)basetable;
648 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
653 * Wipe the first 2 sectors to clear the partitioning. Wipe the last
654 * sector only if it has valid secondary header.
656 basetable->gpt_smhead |= 3;
657 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK &&
658 table->lba[GPT_ELT_SECHDR] == pp->mediasize / pp->sectorsize - 1)
659 basetable->gpt_smtail |= 1;
664 g_part_gpt_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry,
665 struct sbuf *sb, const char *indent)
667 struct g_part_gpt_entry *entry;
669 entry = (struct g_part_gpt_entry *)baseentry;
670 if (indent == NULL) {
671 /* conftxt: libdisk compatibility */
672 sbuf_printf(sb, " xs GPT xt ");
673 sbuf_printf_uuid(sb, &entry->ent.ent_type);
674 } else if (entry != NULL) {
675 /* confxml: partition entry information */
676 sbuf_printf(sb, "%s<label>", indent);
677 g_gpt_printf_utf16(sb, entry->ent.ent_name,
678 sizeof(entry->ent.ent_name) >> 1);
679 sbuf_printf(sb, "</label>\n");
680 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTME)
681 sbuf_printf(sb, "%s<attrib>bootme</attrib>\n", indent);
682 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTONCE) {
683 sbuf_printf(sb, "%s<attrib>bootonce</attrib>\n",
686 if (entry->ent.ent_attr & GPT_ENT_ATTR_BOOTFAILED) {
687 sbuf_printf(sb, "%s<attrib>bootfailed</attrib>\n",
690 sbuf_printf(sb, "%s<rawtype>", indent);
691 sbuf_printf_uuid(sb, &entry->ent.ent_type);
692 sbuf_printf(sb, "</rawtype>\n");
693 sbuf_printf(sb, "%s<rawuuid>", indent);
694 sbuf_printf_uuid(sb, &entry->ent.ent_uuid);
695 sbuf_printf(sb, "</rawuuid>\n");
697 /* confxml: scheme information */
702 g_part_gpt_dumpto(struct g_part_table *table, struct g_part_entry *baseentry)
704 struct g_part_gpt_entry *entry;
706 entry = (struct g_part_gpt_entry *)baseentry;
707 return ((EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd_swap) ||
708 EQUUID(&entry->ent.ent_type, &gpt_uuid_linux_swap)) ? 1 : 0);
712 g_part_gpt_modify(struct g_part_table *basetable,
713 struct g_part_entry *baseentry, struct g_part_parms *gpp)
715 struct g_part_gpt_entry *entry;
718 entry = (struct g_part_gpt_entry *)baseentry;
719 if (gpp->gpp_parms & G_PART_PARM_TYPE) {
720 error = gpt_parse_type(gpp->gpp_type, &entry->ent.ent_type);
724 if (gpp->gpp_parms & G_PART_PARM_LABEL)
725 g_gpt_utf8_to_utf16(gpp->gpp_label, entry->ent.ent_name,
726 sizeof(entry->ent.ent_name) /
727 sizeof(entry->ent.ent_name[0]));
732 g_part_gpt_resize(struct g_part_table *basetable,
733 struct g_part_entry *baseentry, struct g_part_parms *gpp)
735 struct g_part_gpt_entry *entry;
737 if (baseentry == NULL)
740 entry = (struct g_part_gpt_entry *)baseentry;
741 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1;
742 entry->ent.ent_lba_end = baseentry->gpe_end;
748 g_part_gpt_name(struct g_part_table *table, struct g_part_entry *baseentry,
749 char *buf, size_t bufsz)
751 struct g_part_gpt_entry *entry;
754 entry = (struct g_part_gpt_entry *)baseentry;
755 c = (EQUUID(&entry->ent.ent_type, &gpt_uuid_freebsd)) ? 's' : 'p';
756 snprintf(buf, bufsz, "%c%d", c, baseentry->gpe_index);
761 g_part_gpt_probe(struct g_part_table *table, struct g_consumer *cp)
763 struct g_provider *pp;
765 int error, index, pri, res;
767 /* We don't nest, which means that our depth should be 0. */
768 if (table->gpt_depth != 0)
774 * Sanity-check the provider. Since the first sector on the provider
775 * must be a PMBR and a PMBR is 512 bytes large, the sector size
776 * must be at least 512 bytes. Also, since the theoretical minimum
777 * number of sectors needed by GPT is 6, any medium that has less
778 * than 6 sectors is never going to be able to hold a GPT. The
779 * number 6 comes from:
780 * 1 sector for the PMBR
781 * 2 sectors for the GPT headers (each 1 sector)
782 * 2 sectors for the GPT tables (each 1 sector)
783 * 1 sector for an actual partition
784 * It's better to catch this pathological case early than behaving
785 * pathologically later on...
787 if (pp->sectorsize < MBRSIZE || pp->mediasize < 6 * pp->sectorsize)
791 * Check that there's a MBR or a PMBR. If it's a PMBR, we return
792 * as the highest priority on a match, otherwise we assume some
793 * GPT-unaware tool has destroyed the GPT by recreating a MBR and
794 * we really want the MBR scheme to take precedence.
796 buf = g_read_data(cp, 0L, pp->sectorsize, &error);
799 res = le16dec(buf + DOSMAGICOFFSET);
800 pri = G_PART_PROBE_PRI_LOW;
801 for (index = 0; index < NDOSPART; index++) {
802 if (buf[DOSPARTOFF + DOSPARTSIZE * index + 4] == 0xee)
803 pri = G_PART_PROBE_PRI_HIGH;
809 /* Check that there's a primary header. */
810 buf = g_read_data(cp, pp->sectorsize, pp->sectorsize, &error);
813 res = memcmp(buf, GPT_HDR_SIG, 8);
818 /* No primary? Check that there's a secondary. */
819 buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
823 res = memcmp(buf, GPT_HDR_SIG, 8);
825 return ((res == 0) ? pri : ENXIO);
829 g_part_gpt_read(struct g_part_table *basetable, struct g_consumer *cp)
831 struct gpt_hdr *prihdr, *sechdr;
832 struct gpt_ent *tbl, *pritbl, *sectbl;
833 struct g_provider *pp;
834 struct g_part_gpt_table *table;
835 struct g_part_gpt_entry *entry;
840 table = (struct g_part_gpt_table *)basetable;
842 last = (pp->mediasize / pp->sectorsize) - 1;
845 buf = g_read_data(cp, 0, pp->sectorsize, &error);
848 bcopy(buf, table->mbr, MBRSIZE);
851 /* Read the primary header and table. */
852 prihdr = gpt_read_hdr(table, cp, GPT_ELT_PRIHDR);
853 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK) {
854 pritbl = gpt_read_tbl(table, cp, GPT_ELT_PRITBL, prihdr);
856 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING;
860 /* Read the secondary header and table. */
861 sechdr = gpt_read_hdr(table, cp, GPT_ELT_SECHDR);
862 if (table->state[GPT_ELT_SECHDR] == GPT_STATE_OK) {
863 sectbl = gpt_read_tbl(table, cp, GPT_ELT_SECTBL, sechdr);
865 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING;
869 /* Fail if we haven't got any good tables at all. */
870 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK &&
871 table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) {
872 printf("GEOM: %s: corrupt or invalid GPT detected.\n",
874 printf("GEOM: %s: GPT rejected -- may not be recoverable.\n",
880 * If both headers are good but they disagree with each other,
881 * then invalidate one. We prefer to keep the primary header,
882 * unless the primary table is corrupt.
884 if (table->state[GPT_ELT_PRIHDR] == GPT_STATE_OK &&
885 table->state[GPT_ELT_SECHDR] == GPT_STATE_OK &&
886 !gpt_matched_hdrs(prihdr, sechdr)) {
887 if (table->state[GPT_ELT_PRITBL] == GPT_STATE_OK) {
888 table->state[GPT_ELT_SECHDR] = GPT_STATE_INVALID;
889 table->state[GPT_ELT_SECTBL] = GPT_STATE_MISSING;
893 table->state[GPT_ELT_PRIHDR] = GPT_STATE_INVALID;
894 table->state[GPT_ELT_PRITBL] = GPT_STATE_MISSING;
900 if (table->state[GPT_ELT_PRITBL] != GPT_STATE_OK) {
901 printf("GEOM: %s: the primary GPT table is corrupt or "
902 "invalid.\n", pp->name);
903 printf("GEOM: %s: using the secondary instead -- recovery "
904 "strongly advised.\n", pp->name);
906 basetable->gpt_corrupt = 1;
913 if (table->state[GPT_ELT_SECTBL] != GPT_STATE_OK) {
914 printf("GEOM: %s: the secondary GPT table is corrupt "
915 "or invalid.\n", pp->name);
916 printf("GEOM: %s: using the primary only -- recovery "
917 "suggested.\n", pp->name);
918 basetable->gpt_corrupt = 1;
919 } else if (table->lba[GPT_ELT_SECHDR] != last) {
920 printf( "GEOM: %s: the secondary GPT header is not in "
921 "the last LBA.\n", pp->name);
922 basetable->gpt_corrupt = 1;
932 basetable->gpt_first = table->hdr->hdr_lba_start;
933 basetable->gpt_last = table->hdr->hdr_lba_end;
934 basetable->gpt_entries = (table->hdr->hdr_lba_start - 2) *
935 pp->sectorsize / table->hdr->hdr_entsz;
937 for (index = table->hdr->hdr_entries - 1; index >= 0; index--) {
938 if (EQUUID(&tbl[index].ent_type, &gpt_uuid_unused))
940 entry = (struct g_part_gpt_entry *)g_part_new_entry(
941 basetable, index + 1, tbl[index].ent_lba_start,
942 tbl[index].ent_lba_end);
943 entry->ent = tbl[index];
949 * Under Mac OS X, the MBR mirrors the first 4 GPT partitions
950 * if (and only if) any FAT32 or FAT16 partitions have been
951 * created. This happens irrespective of whether Boot Camp is
952 * used/enabled, though it's generally understood to be done
953 * to support legacy Windows under Boot Camp. We refer to this
954 * mirroring simply as Boot Camp. We try to detect Boot Camp
955 * so that we can update the MBR if and when GPT changes have
956 * been made. Note that we do not enable Boot Camp if not
957 * previously enabled because we can't assume that we're on a
958 * Mac alongside Mac OS X.
960 table->bootcamp = gpt_is_bootcamp(table, pp->name);
966 g_part_gpt_recover(struct g_part_table *basetable)
968 struct g_part_gpt_table *table;
969 struct g_provider *pp;
971 table = (struct g_part_gpt_table *)basetable;
972 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider;
973 gpt_create_pmbr(table, pp);
974 g_gpt_set_defaults(basetable, pp);
975 basetable->gpt_corrupt = 0;
980 g_part_gpt_setunset(struct g_part_table *basetable,
981 struct g_part_entry *baseentry, const char *attrib, unsigned int set)
983 struct g_part_gpt_entry *entry;
984 struct g_part_gpt_table *table;
989 table = (struct g_part_gpt_table *)basetable;
990 entry = (struct g_part_gpt_entry *)baseentry;
992 if (strcasecmp(attrib, "active") == 0) {
993 if (table->bootcamp) {
994 /* The active flag must be set on a valid entry. */
997 if (baseentry->gpe_index > NDOSPART)
999 for (i = 0; i < NDOSPART; i++) {
1000 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE];
1001 p[0] = (i == baseentry->gpe_index - 1)
1002 ? ((set) ? 0x80 : 0) : 0;
1005 /* The PMBR is marked as active without an entry. */
1008 for (i = 0; i < NDOSPART; i++) {
1009 p = &table->mbr[DOSPARTOFF + i * DOSPARTSIZE];
1010 p[0] = (p[4] == 0xee) ? ((set) ? 0x80 : 0) : 0;
1020 if (strcasecmp(attrib, "bootme") == 0) {
1021 attr |= GPT_ENT_ATTR_BOOTME;
1022 } else if (strcasecmp(attrib, "bootonce") == 0) {
1023 attr |= GPT_ENT_ATTR_BOOTONCE;
1025 attr |= GPT_ENT_ATTR_BOOTME;
1026 } else if (strcasecmp(attrib, "bootfailed") == 0) {
1028 * It should only be possible to unset BOOTFAILED, but it might
1029 * be useful for test purposes to also be able to set it.
1031 attr |= GPT_ENT_ATTR_BOOTFAILED;
1037 attr = entry->ent.ent_attr | attr;
1039 attr = entry->ent.ent_attr & ~attr;
1040 if (attr != entry->ent.ent_attr) {
1041 entry->ent.ent_attr = attr;
1042 if (!baseentry->gpe_created)
1043 baseentry->gpe_modified = 1;
1049 g_part_gpt_type(struct g_part_table *basetable, struct g_part_entry *baseentry,
1050 char *buf, size_t bufsz)
1052 struct g_part_gpt_entry *entry;
1054 struct g_part_uuid_alias *uap;
1056 entry = (struct g_part_gpt_entry *)baseentry;
1057 type = &entry->ent.ent_type;
1058 for (uap = &gpt_uuid_alias_match[0]; uap->uuid; uap++)
1059 if (EQUUID(type, uap->uuid))
1060 return (g_part_alias_name(uap->alias));
1062 snprintf_uuid(buf + 1, bufsz - 1, type);
1068 g_part_gpt_write(struct g_part_table *basetable, struct g_consumer *cp)
1070 unsigned char *buf, *bp;
1071 struct g_provider *pp;
1072 struct g_part_entry *baseentry;
1073 struct g_part_gpt_entry *entry;
1074 struct g_part_gpt_table *table;
1080 table = (struct g_part_gpt_table *)basetable;
1081 tblsz = (table->hdr->hdr_entries * table->hdr->hdr_entsz +
1082 pp->sectorsize - 1) / pp->sectorsize;
1084 /* Reconstruct the MBR from the GPT if under Boot Camp. */
1085 if (table->bootcamp)
1086 gpt_update_bootcamp(basetable, pp);
1088 /* Write the PMBR */
1089 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO);
1090 bcopy(table->mbr, buf, MBRSIZE);
1091 error = g_write_data(cp, 0, buf, pp->sectorsize);
1096 /* Allocate space for the header and entries. */
1097 buf = g_malloc((tblsz + 1) * pp->sectorsize, M_WAITOK | M_ZERO);
1099 memcpy(buf, table->hdr->hdr_sig, sizeof(table->hdr->hdr_sig));
1100 le32enc(buf + 8, table->hdr->hdr_revision);
1101 le32enc(buf + 12, table->hdr->hdr_size);
1102 le64enc(buf + 40, table->hdr->hdr_lba_start);
1103 le64enc(buf + 48, table->hdr->hdr_lba_end);
1104 le_uuid_enc(buf + 56, &table->hdr->hdr_uuid);
1105 le32enc(buf + 80, table->hdr->hdr_entries);
1106 le32enc(buf + 84, table->hdr->hdr_entsz);
1108 LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) {
1109 if (baseentry->gpe_deleted)
1111 entry = (struct g_part_gpt_entry *)baseentry;
1112 index = baseentry->gpe_index - 1;
1113 bp = buf + pp->sectorsize + table->hdr->hdr_entsz * index;
1114 le_uuid_enc(bp, &entry->ent.ent_type);
1115 le_uuid_enc(bp + 16, &entry->ent.ent_uuid);
1116 le64enc(bp + 32, entry->ent.ent_lba_start);
1117 le64enc(bp + 40, entry->ent.ent_lba_end);
1118 le64enc(bp + 48, entry->ent.ent_attr);
1119 memcpy(bp + 56, entry->ent.ent_name,
1120 sizeof(entry->ent.ent_name));
1123 crc = crc32(buf + pp->sectorsize,
1124 table->hdr->hdr_entries * table->hdr->hdr_entsz);
1125 le32enc(buf + 88, crc);
1127 /* Write primary meta-data. */
1128 le32enc(buf + 16, 0); /* hdr_crc_self. */
1129 le64enc(buf + 24, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_self. */
1130 le64enc(buf + 32, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_alt. */
1131 le64enc(buf + 72, table->lba[GPT_ELT_PRITBL]); /* hdr_lba_table. */
1132 crc = crc32(buf, table->hdr->hdr_size);
1133 le32enc(buf + 16, crc);
1135 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) {
1136 error = g_write_data(cp,
1137 (table->lba[GPT_ELT_PRITBL] + index) * pp->sectorsize,
1138 buf + (index + 1) * pp->sectorsize,
1139 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS:
1140 (tblsz - index) * pp->sectorsize);
1144 error = g_write_data(cp, table->lba[GPT_ELT_PRIHDR] * pp->sectorsize,
1145 buf, pp->sectorsize);
1149 /* Write secondary meta-data. */
1150 le32enc(buf + 16, 0); /* hdr_crc_self. */
1151 le64enc(buf + 24, table->lba[GPT_ELT_SECHDR]); /* hdr_lba_self. */
1152 le64enc(buf + 32, table->lba[GPT_ELT_PRIHDR]); /* hdr_lba_alt. */
1153 le64enc(buf + 72, table->lba[GPT_ELT_SECTBL]); /* 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_SECTBL] + 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_SECHDR] * pp->sectorsize,
1167 buf, pp->sectorsize);
1175 g_gpt_set_defaults(struct g_part_table *basetable, struct g_provider *pp)
1177 struct g_part_gpt_table *table;
1181 table = (struct g_part_gpt_table *)basetable;
1182 last = pp->mediasize / pp->sectorsize - 1;
1183 tblsz = (basetable->gpt_entries * sizeof(struct gpt_ent) +
1184 pp->sectorsize - 1) / pp->sectorsize;
1186 table->lba[GPT_ELT_PRIHDR] = 1;
1187 table->lba[GPT_ELT_PRITBL] = 2;
1188 table->lba[GPT_ELT_SECHDR] = last;
1189 table->lba[GPT_ELT_SECTBL] = last - tblsz;
1190 table->state[GPT_ELT_PRIHDR] = GPT_STATE_OK;
1191 table->state[GPT_ELT_PRITBL] = GPT_STATE_OK;
1192 table->state[GPT_ELT_SECHDR] = GPT_STATE_OK;
1193 table->state[GPT_ELT_SECTBL] = GPT_STATE_OK;
1195 table->hdr->hdr_lba_start = 2 + tblsz;
1196 table->hdr->hdr_lba_end = last - tblsz - 1;
1198 basetable->gpt_first = table->hdr->hdr_lba_start;
1199 basetable->gpt_last = table->hdr->hdr_lba_end;
1203 g_gpt_printf_utf16(struct sbuf *sb, uint16_t *str, size_t len)
1209 bo = LITTLE_ENDIAN; /* GPT is little-endian */
1210 while (len > 0 && *str != 0) {
1211 ch = (bo == BIG_ENDIAN) ? be16toh(*str) : le16toh(*str);
1213 if ((ch & 0xf800) == 0xd800) {
1215 c = (bo == BIG_ENDIAN) ? be16toh(*str)
1220 if ((ch & 0x400) == 0 && (c & 0xfc00) == 0xdc00) {
1221 ch = ((ch & 0x3ff) << 10) + (c & 0x3ff);
1225 } else if (ch == 0xfffe) { /* BOM (U+FEFF) swapped. */
1226 bo = (bo == BIG_ENDIAN) ? LITTLE_ENDIAN : BIG_ENDIAN;
1228 } else if (ch == 0xfeff) /* BOM (U+FEFF) unswapped. */
1231 /* Write the Unicode character in UTF-8 */
1233 sbuf_printf(sb, "%c", ch);
1234 else if (ch < 0x800)
1235 sbuf_printf(sb, "%c%c", 0xc0 | (ch >> 6),
1236 0x80 | (ch & 0x3f));
1237 else if (ch < 0x10000)
1238 sbuf_printf(sb, "%c%c%c", 0xe0 | (ch >> 12),
1239 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f));
1240 else if (ch < 0x200000)
1241 sbuf_printf(sb, "%c%c%c%c", 0xf0 | (ch >> 18),
1242 0x80 | ((ch >> 12) & 0x3f),
1243 0x80 | ((ch >> 6) & 0x3f), 0x80 | (ch & 0x3f));
1248 g_gpt_utf8_to_utf16(const uint8_t *s8, uint16_t *s16, size_t s16len)
1250 size_t s16idx, s8idx;
1252 unsigned int c, utfbytes;
1257 bzero(s16, s16len << 1);
1258 while (s8[s8idx] != 0 && s16idx < s16len) {
1260 if ((c & 0xc0) != 0x80) {
1261 /* Initial characters. */
1262 if (utfbytes != 0) {
1263 /* Incomplete encoding of previous char. */
1264 s16[s16idx++] = htole16(0xfffd);
1266 if ((c & 0xf8) == 0xf0) {
1269 } else if ((c & 0xf0) == 0xe0) {
1272 } else if ((c & 0xe0) == 0xc0) {
1280 /* Followup characters. */
1282 utfchar = (utfchar << 6) + (c & 0x3f);
1284 } else if (utfbytes == 0)
1288 * Write the complete Unicode character as UTF-16 when we
1289 * have all the UTF-8 charactars collected.
1291 if (utfbytes == 0) {
1293 * If we need to write 2 UTF-16 characters, but
1294 * we only have room for 1, then we truncate the
1295 * string by writing a 0 instead.
1297 if (utfchar >= 0x10000 && s16idx < s16len - 1) {
1299 htole16(0xd800 | ((utfchar >> 10) - 0x40));
1301 htole16(0xdc00 | (utfchar & 0x3ff));
1303 s16[s16idx++] = (utfchar >= 0x10000) ? 0 :
1308 * If our input string was truncated, append an invalid encoding
1309 * character to the output string.
1311 if (utfbytes != 0 && s16idx < s16len)
1312 s16[s16idx++] = htole16(0xfffd);