341 lines
8.6 KiB
C
341 lines
8.6 KiB
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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/gpt.h>
|
|
|
|
#include <err.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <uuid.h>
|
|
|
|
#include "map.h"
|
|
#include "gpt.h"
|
|
|
|
/*
|
|
* Allow compilation on platforms that do not have a BSD label.
|
|
* The values are valid for amd64, i386 and ia64 disklabels.
|
|
*/
|
|
#ifndef LABELOFFSET
|
|
#define LABELOFFSET 0
|
|
#endif
|
|
#ifndef LABELSECTOR
|
|
#define LABELSECTOR 1
|
|
#endif
|
|
|
|
int keep, slice;
|
|
|
|
static void
|
|
usage_migrate(void)
|
|
{
|
|
|
|
fprintf(stderr,
|
|
"usage: %s [-ks] device\n", getprogname());
|
|
exit(1);
|
|
}
|
|
|
|
static struct gpt_ent*
|
|
migrate_disklabel(int fd, off_t start, struct gpt_ent *ent)
|
|
{
|
|
char *buf;
|
|
struct disklabel *dl;
|
|
int i;
|
|
|
|
buf = gpt_read(fd, start + LABELSECTOR, 1);
|
|
dl = (void*)(buf + LABELOFFSET);
|
|
|
|
if (dl->d_magic != DISKMAGIC || dl->d_magic2 != DISKMAGIC) {
|
|
warnx("%s: warning: FreeBSD slice without disklabel",
|
|
device_name);
|
|
return (ent);
|
|
}
|
|
|
|
for (i = 0; i < dl->d_npartitions; i++) {
|
|
switch (dl->d_partitions[i].p_fstype) {
|
|
case FS_SWAP: {
|
|
uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
|
|
ent->ent_type = swap;
|
|
unicode16(ent->ent_name,
|
|
L"FreeBSD swap partition", 36);
|
|
break;
|
|
}
|
|
case FS_BSDFFS: {
|
|
uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
|
|
ent->ent_type = ufs;
|
|
unicode16(ent->ent_name,
|
|
L"FreeBSD UFS partition", 36);
|
|
break;
|
|
}
|
|
case FS_VINUM: {
|
|
uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
|
|
ent->ent_type = vinum;
|
|
unicode16(ent->ent_name,
|
|
L"FreeBSD vinum partition", 36);
|
|
break;
|
|
}
|
|
default:
|
|
warnx("%s: warning: unknown FreeBSD partition (%d)",
|
|
device_name, dl->d_partitions[i].p_fstype);
|
|
continue;
|
|
}
|
|
|
|
ent->ent_lba_start = dl->d_partitions[i].p_offset;
|
|
ent->ent_lba_end = ent->ent_lba_start +
|
|
dl->d_partitions[i].p_size - 1LL;
|
|
ent++;
|
|
}
|
|
|
|
return (ent);
|
|
}
|
|
|
|
static void
|
|
migrate(int fd)
|
|
{
|
|
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 = 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 = offsetof(struct gpt_hdr, padding);
|
|
hdr->hdr_lba_self = gpt->map_start;
|
|
hdr->hdr_lba_alt = tpg->map_start;
|
|
hdr->hdr_lba_start = tbl->map_start + blocks;
|
|
hdr->hdr_lba_end = lbt->map_start - 1LL;
|
|
uuid_create(&hdr->hdr_uuid, NULL);
|
|
hdr->hdr_lba_table = tbl->map_start;
|
|
hdr->hdr_entries = (blocks * secsz) / sizeof(struct gpt_ent);
|
|
if (hdr->hdr_entries > parts)
|
|
hdr->hdr_entries = parts;
|
|
hdr->hdr_entsz = sizeof(struct gpt_ent);
|
|
|
|
ent = tbl->map_data;
|
|
for (i = 0; i < hdr->hdr_entries; i++)
|
|
uuid_create(&ent[i].ent_uuid, NULL);
|
|
|
|
/* Mirror partitions. */
|
|
for (i = 0; i < 4; i++) {
|
|
start = mbr->mbr_part[i].part_start_hi;
|
|
start = (start << 16) + mbr->mbr_part[i].part_start_lo;
|
|
size = mbr->mbr_part[i].part_size_hi;
|
|
size = (size << 16) + 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;
|
|
ent->ent_type = freebsd;
|
|
ent->ent_lba_start = start;
|
|
ent->ent_lba_end = start + size - 1LL;
|
|
unicode16(ent->ent_name,
|
|
L"FreeBSD disklabel partition", 36);
|
|
ent++;
|
|
} else
|
|
ent = migrate_disklabel(fd, start, ent);
|
|
break;
|
|
}
|
|
case 239: { /* EFI */
|
|
uuid_t efi_slice = GPT_ENT_TYPE_EFI;
|
|
ent->ent_type = efi_slice;
|
|
ent->ent_lba_start = start;
|
|
ent->ent_lba_end = start + size - 1LL;
|
|
unicode16(ent->ent_name, L"EFI system partition", 36);
|
|
ent++;
|
|
break;
|
|
}
|
|
default:
|
|
warnx("%s: error: unknown partition type (%d)",
|
|
device_name, mbr->mbr_part[i].part_typ);
|
|
return;
|
|
}
|
|
}
|
|
ent = tbl->map_data;
|
|
|
|
hdr->hdr_crc_table = crc32(ent, hdr->hdr_entries * hdr->hdr_entsz);
|
|
hdr->hdr_crc_self = crc32(hdr, 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 = tpg->map_start;
|
|
hdr->hdr_lba_alt = gpt->map_start;
|
|
hdr->hdr_lba_table = lbt->map_start;
|
|
hdr->hdr_crc_self = 0; /* Don't ever forget this! */
|
|
hdr->hdr_crc_self = crc32(hdr, hdr->hdr_size);
|
|
|
|
gpt_write(fd, lbt);
|
|
gpt_write(fd, tpg);
|
|
|
|
if (!keep) {
|
|
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 = 1;
|
|
if (mediasz > 0xffffffff) {
|
|
mbr->mbr_part[0].part_size_lo = 0xffff;
|
|
mbr->mbr_part[0].part_size_hi = 0xffff;
|
|
} else {
|
|
mbr->mbr_part[0].part_size_lo = mediasz & 0xffff;
|
|
mbr->mbr_part[0].part_size_hi = mediasz >> 16;
|
|
}
|
|
gpt_write(fd, map);
|
|
}
|
|
}
|
|
|
|
int
|
|
cmd_migrate(int argc, char *argv[])
|
|
{
|
|
int ch, fd;
|
|
|
|
/* Get the migrate options */
|
|
while ((ch = getopt(argc, argv, "ks")) != -1) {
|
|
switch(ch) {
|
|
case 'k':
|
|
keep = 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);
|
|
}
|