[dragonfly.git] / sbin / gpt / migrate.c

/*-
 * Copyright (c) 2002 Marcel Moolenaar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: src/sbin/gpt/migrate.c,v 1.16 2005/09/01 02:42:52 marcel Exp $
 * $DragonFly: src/sbin/gpt/migrate.c,v 1.3 2007/06/18 05:13:39 dillon Exp $
 */

#include <sys/types.h>
#include <sys/disklabel32.h>
#include <sys/dtype.h>

#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "map.h"
#include "gpt.h"

/*
 * Allow compilation on platforms that do not have a BSD label.
 * The values are valid for x86_64, i386 and ia64 disklabels.
 */
#ifndef LABELOFFSET
#define	LABELOFFSET	0
#endif
#ifndef LABELSECTOR
#define	LABELSECTOR	1
#endif

static int force;
static int slice;

static void
usage_migrate(void)
{

	fprintf(stderr,
	    "usage: %s [-fs] device ...\n", getprogname());
	exit(1);
}

static struct gpt_ent*
migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
{
	char *buf;
	struct disklabel32 *dl;
	off_t ofs, rawofs;
	int i;

	buf = gpt_read(fd, start + LABELSECTOR32, 1);
	dl = (void*)(buf + LABELOFFSET32);

	if (le32toh(dl->d_magic) != DISKMAGIC32 ||
	    le32toh(dl->d_magic2) != DISKMAGIC32) {
		warnx("%s: warning: FreeBSD slice without disklabel",
		    device_name);
		return (ent);
	}

	rawofs = le32toh(dl->d_partitions[RAW_PART].p_offset) *
	    le32toh(dl->d_secsize);
	for (i = 0; i < le16toh(dl->d_npartitions); i++) {
		if (dl->d_partitions[i].p_fstype == FS_UNUSED)
			continue;
		ofs = le32toh(dl->d_partitions[i].p_offset) *
		    le32toh(dl->d_secsize);
		if (ofs < rawofs)
			rawofs = 0;
	}
	rawofs /= secsz;

	for (i = 0; i < le16toh(dl->d_npartitions); i++) {
		switch (dl->d_partitions[i].p_fstype) {
		case FS_UNUSED:
			continue;
		case FS_SWAP: {
			uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
			le_uuid_enc(&ent->ent_type, &swap);
			utf8_to_utf16("FreeBSD swap partition",
			    ent->ent_name, 36);
			break;
		}
		case FS_BSDFFS: {
			uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
			le_uuid_enc(&ent->ent_type, &ufs);
			utf8_to_utf16("FreeBSD UFS partition",
			    ent->ent_name, 36);
			break;
		}
		case FS_VINUM: {
			uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
			le_uuid_enc(&ent->ent_type, &vinum);
			utf8_to_utf16("FreeBSD vinum partition",
			    ent->ent_name, 36);
			break;
		}
		default:
			warnx("%s: warning: unknown FreeBSD partition (%d)",
			    device_name, dl->d_partitions[i].p_fstype);
			continue;
		}

		ofs = (le32toh(dl->d_partitions[i].p_offset) *
		    le32toh(dl->d_secsize)) / secsz;
		ofs = (ofs > 0) ? ofs - rawofs : 0;
		ent->ent_lba_start = htole64(start + ofs);
		ent->ent_lba_end = htole64(start + ofs +
		    le32toh(dl->d_partitions[i].p_size) - 1LL);
		ent++;
	}

	return (ent);
}

static void
migrate(int fd)
{
	uuid_t uuid;
	off_t blocks, last;
	map_t *gpt, *tpg;
	map_t *tbl, *lbt;
	map_t *map;
	struct gpt_hdr *hdr;
	struct gpt_ent *ent;
	struct mbr *mbr;
	uint32_t start, size;
	unsigned int i;

	last = mediasz / secsz - 1LL;

	map = map_find(MAP_TYPE_MBR);
	if (map == NULL || map->map_start != 0) {
		warnx("%s: error: no partitions to convert", device_name);
		return;
	}

	mbr = map->map_data;

	if (map_find(MAP_TYPE_PRI_GPT_HDR) != NULL ||
	    map_find(MAP_TYPE_SEC_GPT_HDR) != NULL) {
		warnx("%s: error: device already contains a GPT", device_name);
		return;
	}

	/* Get the amount of free space after the MBR */
	blocks = map_free(1LL, 0LL);
	if (blocks == 0LL) {
		warnx("%s: error: no room for the GPT header", device_name);
		return;
	}

	/* Don't create more than parts entries. */
	if ((uint64_t)(blocks - 1) * secsz > parts * sizeof(struct gpt_ent)) {
		blocks = (parts * sizeof(struct gpt_ent)) / secsz;
		if ((parts * sizeof(struct gpt_ent)) % secsz)
			blocks++;
		blocks++;		/* Don't forget the header itself */
	}

	/* Never cross the median of the device. */
	if ((blocks + 1LL) > ((last + 1LL) >> 1))
		blocks = ((last + 1LL) >> 1) - 1LL;

	/*
	 * Get the amount of free space at the end of the device and
	 * calculate the size for the GPT structures.
	 */
	map = map_last();
	if (map->map_type != MAP_TYPE_UNUSED) {
		warnx("%s: error: no room for the backup header", device_name);
		return;
	}

	if (map->map_size < blocks)
		blocks = map->map_size;
	if (blocks == 1LL) {
		warnx("%s: error: no room for the GPT table", device_name);
		return;
	}

	blocks--;		/* Number of blocks in the GPT table. */
	gpt = map_add(1LL, 1LL, MAP_TYPE_PRI_GPT_HDR, calloc(1, secsz));
	tbl = map_add(2LL, blocks, MAP_TYPE_PRI_GPT_TBL,
	    calloc(blocks, secsz));
	if (gpt == NULL || tbl == NULL)
		return;

	lbt = map_add(last - blocks, blocks, MAP_TYPE_SEC_GPT_TBL,
	    tbl->map_data);
	tpg = map_add(last, 1LL, MAP_TYPE_SEC_GPT_HDR, calloc(1, secsz));

	hdr = gpt->map_data;
	memcpy(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig));
	hdr->hdr_revision = htole32(GPT_HDR_REVISION);
	/*
	 * XXX struct gpt_hdr is not a multiple of 8 bytes in size and thus
	 * contains padding we must not include in the size.
	 */
	hdr->hdr_size = htole32(offsetof(struct gpt_hdr, padding));
	hdr->hdr_lba_self = htole64(gpt->map_start);
	hdr->hdr_lba_alt = htole64(tpg->map_start);
	hdr->hdr_lba_start = htole64(tbl->map_start + blocks);
	hdr->hdr_lba_end = htole64(lbt->map_start - 1LL);
	uuid_create(&uuid, NULL);
	le_uuid_enc(&hdr->hdr_uuid, &uuid);
	hdr->hdr_lba_table = htole64(tbl->map_start);
	hdr->hdr_entries = htole32((blocks * secsz) / sizeof(struct gpt_ent));
	if (le32toh(hdr->hdr_entries) > parts)
		hdr->hdr_entries = htole32(parts);
	hdr->hdr_entsz = htole32(sizeof(struct gpt_ent));

	ent = tbl->map_data;
	for (i = 0; i < le32toh(hdr->hdr_entries); i++) {
		uuid_create(&uuid, NULL);
		le_uuid_enc(&ent[i].ent_uuid, &uuid);
	}

	/* Mirror partitions. */
	for (i = 0; i < 4; i++) {
		start = le16toh(mbr->mbr_part[i].part_start_hi);
		start = (start << 16) + le16toh(mbr->mbr_part[i].part_start_lo);
		size = le16toh(mbr->mbr_part[i].part_size_hi);
		size = (size << 16) + le16toh(mbr->mbr_part[i].part_size_lo);

		switch (mbr->mbr_part[i].part_typ) {
		case 0:
			continue;
		case 165: {	/* FreeBSD */
			if (slice) {
				uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
				le_uuid_enc(&ent->ent_type, &freebsd);
				ent->ent_lba_start = htole64((uint64_t)start);
				ent->ent_lba_end = htole64(start + size - 1LL);
				utf8_to_utf16("FreeBSD disklabel partition",
				    ent->ent_name, 36);
				ent++;
			} else
				ent = migrate_disklabel(fd, start, ent);
			break;
		}
		case 239: {	/* EFI */
			uuid_t efi_slice = GPT_ENT_TYPE_EFI;
			le_uuid_enc(&ent->ent_type, &efi_slice);
			ent->ent_lba_start = htole64((uint64_t)start);
			ent->ent_lba_end = htole64(start + size - 1LL);
			utf8_to_utf16("EFI system partition",
			    ent->ent_name, 36);
			ent++;
			break;
		}
		default:
			if (!force) {
				warnx("%s: error: unknown partition type (%d)",
				    device_name, mbr->mbr_part[i].part_typ);
				return;
			}
		}
	}
	ent = tbl->map_data;

	hdr->hdr_crc_table = htole32(crc32(ent, le32toh(hdr->hdr_entries) *
	    le32toh(hdr->hdr_entsz)));
	hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));

	gpt_write(fd, gpt);
	gpt_write(fd, tbl);

	/*
	 * Create backup GPT.
	 */
	memcpy(tpg->map_data, gpt->map_data, secsz);
	hdr = tpg->map_data;
	hdr->hdr_lba_self = htole64(tpg->map_start);
	hdr->hdr_lba_alt = htole64(gpt->map_start);
	hdr->hdr_lba_table = htole64(lbt->map_start);
	hdr->hdr_crc_self = 0;			/* Don't ever forget this! */
	hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));

	gpt_write(fd, lbt);
	gpt_write(fd, tpg);

	map = map_find(MAP_TYPE_MBR);
	mbr = map->map_data;
	/*
	 * Turn the MBR into a Protective MBR.
	 */
	bzero(mbr->mbr_part, sizeof(mbr->mbr_part));
	mbr->mbr_part[0].part_shd = 0xff;
	mbr->mbr_part[0].part_ssect = 0xff;
	mbr->mbr_part[0].part_scyl = 0xff;
	mbr->mbr_part[0].part_typ = 0xee;
	mbr->mbr_part[0].part_ehd = 0xff;
	mbr->mbr_part[0].part_esect = 0xff;
	mbr->mbr_part[0].part_ecyl = 0xff;
	mbr->mbr_part[0].part_start_lo = htole16(1);
	if (last > 0xffffffff) {
		mbr->mbr_part[0].part_size_lo = htole16(0xffff);
		mbr->mbr_part[0].part_size_hi = htole16(0xffff);
	} else {
		mbr->mbr_part[0].part_size_lo = htole16(last);
		mbr->mbr_part[0].part_size_hi = htole16(last >> 16);
	}
	gpt_write(fd, map);
}

int
cmd_migrate(int argc, char *argv[])
{
	int ch, fd;

	/* Get the migrate options */
	while ((ch = getopt(argc, argv, "fs")) != -1) {
		switch(ch) {
		case 'f':
			force = 1;
			break;
		case 's':
			slice = 1;
			break;
		default:
			usage_migrate();
		}
	}

	if (argc == optind)
		usage_migrate();

	while (optind < argc) {
		fd = gpt_open(argv[optind++]);
		if (fd == -1) {
			warn("unable to open device '%s'", device_name);
			continue;
		}

		migrate(fd);

		gpt_close(fd);
	}

	return (0);
}
Commit	Line	Data
fb9cffef MD	1	/*-
	2	* Copyright (c) 2002 Marcel Moolenaar
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	*
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	*
	15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	16	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	17	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	18	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	19	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	20	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	21	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	22	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	23	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	24	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	25	*
	26	* $FreeBSD: src/sbin/gpt/migrate.c,v 1.16 2005/09/01 02:42:52 marcel Exp $
2b961883	27	* $DragonFly: src/sbin/gpt/migrate.c,v 1.3 2007/06/18 05:13:39 dillon Exp $
fb9cffef MD	28	*/
	29
	30	#include <sys/types.h>
2b961883	31	#include <sys/disklabel32.h>
ba0cc1ab	32	#include <sys/dtype.h>
fb9cffef MD	33
	34	#include <err.h>
	35	#include <stddef.h>
	36	#include <stdio.h>
	37	#include <stdlib.h>
	38	#include <string.h>
	39	#include <unistd.h>
	40
	41	#include "map.h"
	42	#include "gpt.h"
	43
	44	/*
	45	* Allow compilation on platforms that do not have a BSD label.
c1543a89	46	* The values are valid for x86_64, i386 and ia64 disklabels.
fb9cffef MD	47	*/
	48	#ifndef LABELOFFSET
	49	#define LABELOFFSET 0
	50	#endif
	51	#ifndef LABELSECTOR
	52	#define LABELSECTOR 1
	53	#endif
	54
	55	static int force;
	56	static int slice;
	57
	58	static void
	59	usage_migrate(void)
	60	{
	61
	62	fprintf(stderr,
	63	"usage: %s [-fs] device ...\n", getprogname());
	64	exit(1);
	65	}
	66
	67	static struct gpt_ent*
	68	migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
	69	{
	70	char *buf;
2b961883	71	struct disklabel32 *dl;
fb9cffef MD	72	off_t ofs, rawofs;
	73	int i;
	74
2b961883 MD	75	buf = gpt_read(fd, start + LABELSECTOR32, 1);
2b961883 MD	76	dl = (void*)(buf + LABELOFFSET32);
fb9cffef	77
2b961883 MD	78	if (le32toh(dl->d_magic) != DISKMAGIC32 \|\|
2b961883 MD	79	le32toh(dl->d_magic2) != DISKMAGIC32) {
fb9cffef MD	80	warnx("%s: warning: FreeBSD slice without disklabel",
	81	device_name);
	82	return (ent);
	83	}
	84
	85	rawofs = le32toh(dl->d_partitions[RAW_PART].p_offset) *
	86	le32toh(dl->d_secsize);
	87	for (i = 0; i < le16toh(dl->d_npartitions); i++) {
	88	if (dl->d_partitions[i].p_fstype == FS_UNUSED)
	89	continue;
	90	ofs = le32toh(dl->d_partitions[i].p_offset) *
	91	le32toh(dl->d_secsize);
	92	if (ofs < rawofs)
	93	rawofs = 0;
	94	}
	95	rawofs /= secsz;
	96
	97	for (i = 0; i < le16toh(dl->d_npartitions); i++) {
	98	switch (dl->d_partitions[i].p_fstype) {
	99	case FS_UNUSED:
	100	continue;
	101	case FS_SWAP: {
	102	uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
	103	le_uuid_enc(&ent->ent_type, &swap);
	104	utf8_to_utf16("FreeBSD swap partition",
	105	ent->ent_name, 36);
	106	break;
	107	}
	108	case FS_BSDFFS: {
	109	uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
	110	le_uuid_enc(&ent->ent_type, &ufs);
	111	utf8_to_utf16("FreeBSD UFS partition",
	112	ent->ent_name, 36);
	113	break;
	114	}
	115	case FS_VINUM: {
	116	uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
	117	le_uuid_enc(&ent->ent_type, &vinum);
	118	utf8_to_utf16("FreeBSD vinum partition",
	119	ent->ent_name, 36);
	120	break;
	121	}
	122	default:
	123	warnx("%s: warning: unknown FreeBSD partition (%d)",
	124	device_name, dl->d_partitions[i].p_fstype);
	125	continue;
	126	}
	127
	128	ofs = (le32toh(dl->d_partitions[i].p_offset) *
	129	le32toh(dl->d_secsize)) / secsz;
	130	ofs = (ofs > 0) ? ofs - rawofs : 0;
	131	ent->ent_lba_start = htole64(start + ofs);
	132	ent->ent_lba_end = htole64(start + ofs +
	133	le32toh(dl->d_partitions[i].p_size) - 1LL);
	134	ent++;
	135	}
	136
	137	return (ent);
	138	}
	139
	140	static void
	141	migrate(int fd)
	142	{
	143	uuid_t uuid;
144	off_t blocks, last;
145	map_t gpt, tpg;
146	map_t tbl, lbt;
147	map_t *map;
148	struct gpt_hdr *hdr;
149	struct gpt_ent *ent;
150	struct mbr *mbr;
151	uint32_t start, size;
152	unsigned int i;
153
154	last = mediasz / secsz - 1LL;
155
156	map = map_find(MAP_TYPE_MBR);
157	if (map == NULL \|\| map->map_start != 0) {
158	warnx("%s: error: no partitions to convert", device_name);
159	return;
160	}
161
162	mbr = map->map_data;
163
164	if (map_find(MAP_TYPE_PRI_GPT_HDR) != NULL \|\|
165	map_find(MAP_TYPE_SEC_GPT_HDR) != NULL) {
166	warnx("%s: error: device already contains a GPT", device_name);
167	return;
168	}
169
170	/* Get the amount of free space after the MBR */
171	blocks = map_free(1LL, 0LL);
172	if (blocks == 0LL) {
173	warnx("%s: error: no room for the GPT header", device_name);
174	return;
175	}
176
177	/* Don't create more than parts entries. */
178	if ((uint64_t)(blocks - 1) * secsz > parts * sizeof(struct gpt_ent)) {
179	blocks = (parts * sizeof(struct gpt_ent)) / secsz;
180	if ((parts * sizeof(struct gpt_ent)) % secsz)
181	blocks++;
182	blocks++; /* Don't forget the header itself */
183	}
184
185	/* Never cross the median of the device. */
186	if ((blocks + 1LL) > ((last + 1LL) >> 1))
187	blocks = ((last + 1LL) >> 1) - 1LL;
188
189	/*
190	* Get the amount of free space at the end of the device and
191	* calculate the size for the GPT structures.
192	*/
193	map = map_last();
194	if (map->map_type != MAP_TYPE_UNUSED) {
195	warnx("%s: error: no room for the backup header", device_name);
196	return;
197	}
198
199	if (map->map_size < blocks)
200	blocks = map->map_size;
201	if (blocks == 1LL) {
202	warnx("%s: error: no room for the GPT table", device_name);
203	return;
204	}
205
206	blocks--; /* Number of blocks in the GPT table. */
207	gpt = map_add(1LL, 1LL, MAP_TYPE_PRI_GPT_HDR, calloc(1, secsz));
208	tbl = map_add(2LL, blocks, MAP_TYPE_PRI_GPT_TBL,
209	calloc(blocks, secsz));
210	if (gpt == NULL \|\| tbl == NULL)
211	return;
212
213	lbt = map_add(last - blocks, blocks, MAP_TYPE_SEC_GPT_TBL,
214	tbl->map_data);
215	tpg = map_add(last, 1LL, MAP_TYPE_SEC_GPT_HDR, calloc(1, secsz));
216
217	hdr = gpt->map_data;
218	memcpy(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig));
219	hdr->hdr_revision = htole32(GPT_HDR_REVISION);
220	/*
221	* XXX struct gpt_hdr is not a multiple of 8 bytes in size and thus
222	* contains padding we must not include in the size.
223	*/
224	hdr->hdr_size = htole32(offsetof(struct gpt_hdr, padding));
225	hdr->hdr_lba_self = htole64(gpt->map_start);
226	hdr->hdr_lba_alt = htole64(tpg->map_start);
227	hdr->hdr_lba_start = htole64(tbl->map_start + blocks);
228	hdr->hdr_lba_end = htole64(lbt->map_start - 1LL);
229	uuid_create(&uuid, NULL);
230	le_uuid_enc(&hdr->hdr_uuid, &uuid);
231	hdr->hdr_lba_table = htole64(tbl->map_start);
232	hdr->hdr_entries = htole32((blocks * secsz) / sizeof(struct gpt_ent));
233	if (le32toh(hdr->hdr_entries) > parts)
234	hdr->hdr_entries = htole32(parts);
235	hdr->hdr_entsz = htole32(sizeof(struct gpt_ent));
236
237	ent = tbl->map_data;
238	for (i = 0; i < le32toh(hdr->hdr_entries); i++) {
239	uuid_create(&uuid, NULL);
240	le_uuid_enc(&ent[i].ent_uuid, &uuid);
241	}
242
243	/* Mirror partitions. */
244	for (i = 0; i < 4; i++) {
245	start = le16toh(mbr->mbr_part[i].part_start_hi);
246	start = (start << 16) + le16toh(mbr->mbr_part[i].part_start_lo);
247	size = le16toh(mbr->mbr_part[i].part_size_hi);
248	size = (size << 16) + le16toh(mbr->mbr_part[i].part_size_lo);
249
250	switch (mbr->mbr_part[i].part_typ) {
251	case 0:
252	continue;
253	case 165: { /* FreeBSD */
254	if (slice) {
255	uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
256	le_uuid_enc(&ent->ent_type, &freebsd);
257	ent->ent_lba_start = htole64((uint64_t)start);
258	ent->ent_lba_end = htole64(start + size - 1LL);
259	utf8_to_utf16("FreeBSD disklabel partition",
260	ent->ent_name, 36);
261	ent++;
262	} else
263	ent = migrate_disklabel(fd, start, ent);
264	break;
265	}
266	case 239: { /* EFI */
267	uuid_t efi_slice = GPT_ENT_TYPE_EFI;
268	le_uuid_enc(&ent->ent_type, &efi_slice);
269	ent->ent_lba_start = htole64((uint64_t)start);
270	ent->ent_lba_end = htole64(start + size - 1LL);
271	utf8_to_utf16("EFI system partition",
272	ent->ent_name, 36);
273	ent++;
274	break;
275	}
276	default:
277	if (!force) {
278	warnx("%s: error: unknown partition type (%d)",
279	device_name, mbr->mbr_part[i].part_typ);
280	return;
281	}
282	}
283	}
284	ent = tbl->map_data;
285
286	hdr->hdr_crc_table = htole32(crc32(ent, le32toh(hdr->hdr_entries) *
287	le32toh(hdr->hdr_entsz)));
288	hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
289
290	gpt_write(fd, gpt);
291	gpt_write(fd, tbl);
292
293	/*
294	* Create backup GPT.
295	*/
296	memcpy(tpg->map_data, gpt->map_data, secsz);
297	hdr = tpg->map_data;
298	hdr->hdr_lba_self = htole64(tpg->map_start);
299	hdr->hdr_lba_alt = htole64(gpt->map_start);
300	hdr->hdr_lba_table = htole64(lbt->map_start);
301	hdr->hdr_crc_self = 0; /* Don't ever forget this! */
302	hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
303
304	gpt_write(fd, lbt);
305	gpt_write(fd, tpg);
306
307	map = map_find(MAP_TYPE_MBR);
308	mbr = map->map_data;
309	/*
310	* Turn the MBR into a Protective MBR.
311	*/
312	bzero(mbr->mbr_part, sizeof(mbr->mbr_part));
313	mbr->mbr_part[0].part_shd = 0xff;
314	mbr->mbr_part[0].part_ssect = 0xff;
315	mbr->mbr_part[0].part_scyl = 0xff;
316	mbr->mbr_part[0].part_typ = 0xee;
317	mbr->mbr_part[0].part_ehd = 0xff;
318	mbr->mbr_part[0].part_esect = 0xff;
319	mbr->mbr_part[0].part_ecyl = 0xff;
320	mbr->mbr_part[0].part_start_lo = htole16(1);
321	if (last > 0xffffffff) {
322	mbr->mbr_part[0].part_size_lo = htole16(0xffff);
323	mbr->mbr_part[0].part_size_hi = htole16(0xffff);
324	} else {
325	mbr->mbr_part[0].part_size_lo = htole16(last);
326	mbr->mbr_part[0].part_size_hi = htole16(last >> 16);
327	}
328	gpt_write(fd, map);
329	}
330
331	int
332	cmd_migrate(int argc, char *argv[])
333	{
334	int ch, fd;
335
336	/* Get the migrate options */
337	while ((ch = getopt(argc, argv, "fs")) != -1) {
338	switch(ch) {
339	case 'f':
340	force = 1;
341	break;
342	case 's':
343	slice = 1;
344	break;
345	default:
346	usage_migrate();
347	}
348	}
349
350	if (argc == optind)
351	usage_migrate();
352
353	while (optind < argc) {
354	fd = gpt_open(argv[optind++]);
355	if (fd == -1) {
356	warn("unable to open device '%s'", device_name);
357	continue;
358	}
359
360	migrate(fd);
361
362	gpt_close(fd);
363	}
364
365	return (0);
366	}