2 * Copyright (c) 2002 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/types.h>
31 #include <sys/disklabel.h>
44 * Allow compilation on platforms that do not have a BSD label.
45 * The values are valid for amd64, i386 and ia64 disklabels.
62 "usage: %s [-fs] device ...\n", getprogname());
66 static struct gpt_ent*
67 migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
74 buf = gpt_read(fd, start + LABELSECTOR, 1);
75 dl = (void*)(buf + LABELOFFSET);
77 if (le32toh(dl->d_magic) != DISKMAGIC ||
78 le32toh(dl->d_magic2) != DISKMAGIC) {
79 warnx("%s: warning: FreeBSD slice without disklabel",
84 rawofs = le32toh(dl->d_partitions[RAW_PART].p_offset) *
85 le32toh(dl->d_secsize);
86 for (i = 0; i < le16toh(dl->d_npartitions); i++) {
87 if (dl->d_partitions[i].p_fstype == FS_UNUSED)
89 ofs = le32toh(dl->d_partitions[i].p_offset) *
90 le32toh(dl->d_secsize);
96 for (i = 0; i < le16toh(dl->d_npartitions); i++) {
97 switch (dl->d_partitions[i].p_fstype) {
101 uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
102 le_uuid_enc(&ent->ent_type, &swap);
103 utf8_to_utf16("FreeBSD swap partition",
108 uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
109 le_uuid_enc(&ent->ent_type, &ufs);
110 utf8_to_utf16("FreeBSD UFS partition",
115 uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
116 le_uuid_enc(&ent->ent_type, &vinum);
117 utf8_to_utf16("FreeBSD vinum partition",
122 uuid_t zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
123 le_uuid_enc(&ent->ent_type, &zfs);
124 utf8_to_utf16("FreeBSD ZFS partition",
129 warnx("%s: warning: unknown FreeBSD partition (%d)",
130 device_name, dl->d_partitions[i].p_fstype);
134 ofs = (le32toh(dl->d_partitions[i].p_offset) *
135 le32toh(dl->d_secsize)) / secsz;
136 ofs = (ofs > 0) ? ofs - rawofs : 0;
137 ent->ent_lba_start = htole64(start + ofs);
138 ent->ent_lba_end = htole64(start + ofs +
139 le32toh(dl->d_partitions[i].p_size) - 1LL);
157 uint32_t start, size;
160 last = mediasz / secsz - 1LL;
162 map = map_find(MAP_TYPE_MBR);
163 if (map == NULL || map->map_start != 0) {
164 warnx("%s: error: no partitions to convert", device_name);
170 if (map_find(MAP_TYPE_PRI_GPT_HDR) != NULL ||
171 map_find(MAP_TYPE_SEC_GPT_HDR) != NULL) {
172 warnx("%s: error: device already contains a GPT", device_name);
176 /* Get the amount of free space after the MBR */
177 blocks = map_free(1LL, 0LL);
179 warnx("%s: error: no room for the GPT header", device_name);
183 /* Don't create more than parts entries. */
184 if ((uint64_t)(blocks - 1) * secsz > parts * sizeof(struct gpt_ent)) {
185 blocks = (parts * sizeof(struct gpt_ent)) / secsz;
186 if ((parts * sizeof(struct gpt_ent)) % secsz)
188 blocks++; /* Don't forget the header itself */
191 /* Never cross the median of the device. */
192 if ((blocks + 1LL) > ((last + 1LL) >> 1))
193 blocks = ((last + 1LL) >> 1) - 1LL;
196 * Get the amount of free space at the end of the device and
197 * calculate the size for the GPT structures.
200 if (map->map_type != MAP_TYPE_UNUSED) {
201 warnx("%s: error: no room for the backup header", device_name);
205 if (map->map_size < blocks)
206 blocks = map->map_size;
208 warnx("%s: error: no room for the GPT table", device_name);
212 blocks--; /* Number of blocks in the GPT table. */
213 gpt = map_add(1LL, 1LL, MAP_TYPE_PRI_GPT_HDR, calloc(1, secsz));
214 tbl = map_add(2LL, blocks, MAP_TYPE_PRI_GPT_TBL,
215 calloc(blocks, secsz));
216 if (gpt == NULL || tbl == NULL)
219 lbt = map_add(last - blocks, blocks, MAP_TYPE_SEC_GPT_TBL,
221 tpg = map_add(last, 1LL, MAP_TYPE_SEC_GPT_HDR, calloc(1, secsz));
224 memcpy(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig));
225 hdr->hdr_revision = htole32(GPT_HDR_REVISION);
227 * XXX struct gpt_hdr is not a multiple of 8 bytes in size and thus
228 * contains padding we must not include in the size.
230 hdr->hdr_size = htole32(offsetof(struct gpt_hdr, padding));
231 hdr->hdr_lba_self = htole64(gpt->map_start);
232 hdr->hdr_lba_alt = htole64(tpg->map_start);
233 hdr->hdr_lba_start = htole64(tbl->map_start + blocks);
234 hdr->hdr_lba_end = htole64(lbt->map_start - 1LL);
235 uuid_create(&uuid, NULL);
236 le_uuid_enc(&hdr->hdr_uuid, &uuid);
237 hdr->hdr_lba_table = htole64(tbl->map_start);
238 hdr->hdr_entries = htole32((blocks * secsz) / sizeof(struct gpt_ent));
239 if (le32toh(hdr->hdr_entries) > parts)
240 hdr->hdr_entries = htole32(parts);
241 hdr->hdr_entsz = htole32(sizeof(struct gpt_ent));
244 for (i = 0; i < le32toh(hdr->hdr_entries); i++) {
245 uuid_create(&uuid, NULL);
246 le_uuid_enc(&ent[i].ent_uuid, &uuid);
249 /* Mirror partitions. */
250 for (i = 0; i < 4; i++) {
251 start = le16toh(mbr->mbr_part[i].part_start_hi);
252 start = (start << 16) + le16toh(mbr->mbr_part[i].part_start_lo);
253 size = le16toh(mbr->mbr_part[i].part_size_hi);
254 size = (size << 16) + le16toh(mbr->mbr_part[i].part_size_lo);
256 switch (mbr->mbr_part[i].part_typ) {
259 case 165: { /* FreeBSD */
261 uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
262 le_uuid_enc(&ent->ent_type, &freebsd);
263 ent->ent_lba_start = htole64((uint64_t)start);
264 ent->ent_lba_end = htole64(start + size - 1LL);
265 utf8_to_utf16("FreeBSD disklabel partition",
269 ent = migrate_disklabel(fd, start, ent);
272 case 239: { /* EFI */
273 uuid_t efi_slice = GPT_ENT_TYPE_EFI;
274 le_uuid_enc(&ent->ent_type, &efi_slice);
275 ent->ent_lba_start = htole64((uint64_t)start);
276 ent->ent_lba_end = htole64(start + size - 1LL);
277 utf8_to_utf16("EFI system partition",
284 warnx("%s: error: unknown partition type (%d)",
285 device_name, mbr->mbr_part[i].part_typ);
292 hdr->hdr_crc_table = htole32(crc32(ent, le32toh(hdr->hdr_entries) *
293 le32toh(hdr->hdr_entsz)));
294 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
302 memcpy(tpg->map_data, gpt->map_data, secsz);
304 hdr->hdr_lba_self = htole64(tpg->map_start);
305 hdr->hdr_lba_alt = htole64(gpt->map_start);
306 hdr->hdr_lba_table = htole64(lbt->map_start);
307 hdr->hdr_crc_self = 0; /* Don't ever forget this! */
308 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
313 map = map_find(MAP_TYPE_MBR);
316 * Turn the MBR into a Protective MBR.
318 bzero(mbr->mbr_part, sizeof(mbr->mbr_part));
319 mbr->mbr_part[0].part_shd = 0xff;
320 mbr->mbr_part[0].part_ssect = 0xff;
321 mbr->mbr_part[0].part_scyl = 0xff;
322 mbr->mbr_part[0].part_typ = 0xee;
323 mbr->mbr_part[0].part_ehd = 0xff;
324 mbr->mbr_part[0].part_esect = 0xff;
325 mbr->mbr_part[0].part_ecyl = 0xff;
326 mbr->mbr_part[0].part_start_lo = htole16(1);
327 if (last > 0xffffffff) {
328 mbr->mbr_part[0].part_size_lo = htole16(0xffff);
329 mbr->mbr_part[0].part_size_hi = htole16(0xffff);
331 mbr->mbr_part[0].part_size_lo = htole16(last);
332 mbr->mbr_part[0].part_size_hi = htole16(last >> 16);
338 cmd_migrate(int argc, char *argv[])
342 /* Get the migrate options */
343 while ((ch = getopt(argc, argv, "fs")) != -1) {
359 while (optind < argc) {
360 fd = gpt_open(argv[optind++]);
362 warn("unable to open device '%s'", device_name);