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Grab a snapshot of Marcel's gpt tool. This is still a work-in-progress

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but is useful to have handy.  EFI GPT partitions are used instead of the
fdisk+disklabel combination.  They are pure 64 bit LBA, are fully
extensible, support up to 16383 partitons per disk, etc.
This commit is contained in:
Peter Wemm 2002-07-20 19:27:43 +00:00
parent 7657553c76
commit 80643c90e3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=100410
10 changed files with 1454 additions and 0 deletions
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8
sbin/gpt/Makefile Normal file
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# $FreeBSD$
PROG= gpt
SRCS= destroy.c gpt.c map.c migrate.c recover.c show.c
WARNS= 4
NOMAN= not yet
.include <bsd.prog.mk>

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sbin/gpt/destroy.c Normal file
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/*
* 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/uuid.h>
#include <sys/gpt.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"
int recoverable;
static void
usage_destroy(void)
{
fprintf(stderr,
"usage: %s [-r] device ...\n", getprogname());
exit(1);
}
static void
destroy(int fd)
{
map_t *pri_hdr, *sec_hdr;
pri_hdr = map_find(MAP_TYPE_PRI_GPT_HDR);
sec_hdr = map_find(MAP_TYPE_SEC_GPT_HDR);
if (pri_hdr == NULL && sec_hdr == NULL) {
warnx("%s: error: device doesn't contain a GPT", device_name);
return;
}
if (recoverable && sec_hdr == NULL) {
warnx("%s: error: recoverability not possible", device_name);
return;
}
if (pri_hdr != NULL) {
bzero(pri_hdr->map_data, secsz);
gpt_write(fd, pri_hdr);
}
if (!recoverable && sec_hdr != NULL) {
bzero(sec_hdr->map_data, secsz);
gpt_write(fd, sec_hdr);
}
}
int
cmd_destroy(int argc, char *argv[])
{
int ch, fd;
while ((ch = getopt(argc, argv, "r")) != -1) {
switch(ch) {
case 'r':
recoverable = 1;
break;
default:
usage_destroy();
}
}
if (argc == optind)
usage_destroy();
while (optind < argc) {
fd = gpt_open(argv[optind++]);
if (fd == -1) {
warn("unable to open device '%s'", device_name);
continue;
}
destroy(fd);
gpt_close(fd);
}
return (0);
}

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sbin/gpt/gpt.c Normal file
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/*
* 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.
*
* CRC32 code derived from work by Gary S. Brown.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/disk.h>
#include <sys/stat.h>
#include <sys/uuid.h>
#include <sys/gpt.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "map.h"
#include "gpt.h"
char device_name[MAXPATHLEN];
off_t mediasz;
u_int parts;
u_int secsz;
int readonly, verbose;
static uint32_t crc32_tab[] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
uint32_t
crc32(const void *buf, size_t size)
{
const uint8_t *p;
uint32_t crc;
p = buf;
crc = ~0U;
while (size--)
crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
return crc ^ ~0U;
}
void
unicode16(short *dst, const wchar_t *src, size_t len)
{
while (len-- && *src != 0)
*dst++ = *src++;
if (len)
*dst = 0;
}
static char *
uuid_string(uuid_t *uuid)
{
static char buf[48];
sprintf(buf, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
uuid->time_low, uuid->time_mid, uuid->time_hi_and_version,
uuid->clock_seq_hi_and_reserved, uuid->clock_seq_low,
uuid->node[0], uuid->node[1], uuid->node[2], uuid->node[3],
uuid->node[4], uuid->node[5]);
return buf;
}
void*
gpt_read(int fd, off_t lba, size_t count)
{
off_t ofs;
void *buf;
count *= secsz;
buf = malloc(count);
if (buf == NULL)
return (NULL);
ofs = lba * secsz;
if (lseek(fd, ofs, SEEK_SET) == ofs &&
read(fd, buf, count) == (ssize_t)count)
return (buf);
free(buf);
return (NULL);
}
int
gpt_write(int fd, map_t *map)
{
off_t ofs;
size_t count;
count = map->map_size * secsz;
ofs = map->map_start * secsz;
if (lseek(fd, ofs, SEEK_SET) == ofs &&
write(fd, map->map_data, count) == (ssize_t)count)
return (0);
return (-1);
}
static int
gpt_gpt(int fd, off_t lba)
{
off_t size;
struct gpt_ent *ent;
struct gpt_hdr *hdr;
char *p;
map_t *m;
size_t blocks, tblsz;
unsigned int i;
uint32_t crc;
hdr = gpt_read(fd, lba, 1);
if (hdr == NULL)
return (-1);
if (memcmp(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig)))
goto fail_hdr;
crc = hdr->hdr_crc_self;
hdr->hdr_crc_self = 0;
if (crc32(hdr, hdr->hdr_size) != crc) {
if (verbose)
warnx("%s: Bad CRC in GPT header at sector %llu",
device_name, (long long)lba);
goto fail_hdr;
}
tblsz = hdr->hdr_entries * hdr->hdr_entsz;
blocks = tblsz / secsz + ((tblsz % secsz) ? 1 : 0);
/* Use generic pointer to deal with hdr->hdr_entsz != sizeof(*ent). */
p = gpt_read(fd, hdr->hdr_lba_table, blocks);
if (p == NULL)
return (-1);
if (crc32(p, tblsz) != hdr->hdr_crc_table) {
if (verbose)
warnx("%s: Bad CRC in GPT table at sector %llu",
device_name, (long long)hdr->hdr_lba_table);
goto fail_ent;
}
if (verbose > 1)
warnx("%s: %s GPT at sector %llu", device_name,
(lba == 1) ? "Pri" : "Sec", (long long)lba);
m = map_add(lba, 1, (lba == 1)
? MAP_TYPE_PRI_GPT_HDR : MAP_TYPE_SEC_GPT_HDR, hdr);
if (m == NULL)
return (-1);
m = map_add(hdr->hdr_lba_table, blocks, (lba == 1)
? MAP_TYPE_PRI_GPT_TBL : MAP_TYPE_SEC_GPT_TBL, p);
if (m == NULL)
return (-1);
if (lba != 1)
return (0);
for (i = 0; i < hdr->hdr_entries; i++) {
uuid_t unused = GPT_ENT_TYPE_UNUSED;
ent = (void*)(p + i * hdr->hdr_entsz);
if (!memcmp(&ent->ent_type, &unused, sizeof(uuid_t)))
continue;
size = ent->ent_lba_end - ent->ent_lba_start + 1LL;
if (verbose > 2)
warnx(
"%s: GPT partition: type=%s, start=%llu, size=%llu",
device_name, uuid_string(&ent->ent_type),
(long long)ent->ent_lba_start, (long long)size);
m = map_add(ent->ent_lba_start, size, MAP_TYPE_GPT_PART, NULL);
if (m == NULL)
return (-1);
}
return (0);
fail_ent:
free(p);
fail_hdr:
free(hdr);
return (0);
}
int
gpt_open(const char *dev)
{
struct stat sb;
struct mbr *mbr;
map_t *m;
uint32_t size, start;
unsigned int i;
int fd;
if (!stat(dev, &sb)) {
strlcpy(device_name, dev, sizeof(device_name));
goto found;
}
snprintf(device_name, sizeof(device_name), "/dev/%s", dev);
if (!stat(device_name, &sb))
goto found;
strlcpy(device_name, dev, sizeof(device_name));
return (-1);
found:
fd = open(device_name, (readonly) ? O_RDONLY : O_RDWR|O_EXCL);
if (fd == -1)
return (-1);
if ((sb.st_mode & S_IFMT) != S_IFREG) {
if (ioctl(fd, DIOCGSECTORSIZE, &secsz) == -1 ||
ioctl(fd, DIOCGMEDIASIZE, &mediasz) == -1)
goto close;
} else {
secsz = 512; /* Fixed size for files. */
if (sb.st_size % secsz) {
errno = EINVAL;
goto close;
}
mediasz = sb.st_size;
}
/*
* We require an absolute minimum of 6 sectors. One for the MBR,
* 2 for the GPT header, 2 for the GPT table and one to hold some
* user data. Let's catch this extreme border case here so that
* we don't have to worry about it later.
*/
if (mediasz / secsz < 6) {
errno = ENODEV;
goto close;
}
if (verbose)
warnx("%s: mediasize=%llu; sectorsize=%u; blocks=%llu",
device_name, (long long)mediasz, secsz,
(long long)(mediasz / secsz));
map_init(mediasz / secsz);
/*
* MBR
*/
mbr = gpt_read(fd, 0LL, 1);
if (mbr == NULL)
goto close;
if (mbr->mbr_sig == MBR_SIG) {
if (verbose > 1)
warnx("%s: MBR at sector 0", device_name);
m = map_add(0LL, 1LL, MAP_TYPE_MBR, mbr);
if (m == NULL)
goto close;
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;
if (start != 0 || size != 0) {
if (verbose > 2)
warnx(
"%s: MBR partition: type=%d, start=%llu, size=%llu", device_name,
mbr->mbr_part[i].part_typ,
(long long)start, (long long)size);
if (mbr->mbr_part[i].part_typ != 0xee) {
m = map_add(start, size,
MAP_TYPE_MBR_PART, NULL);
if (m == NULL)
goto close;
}
}
}
} else {
if (verbose)
warnx("%s: MBR not found", device_name);
free(mbr);
}
/*
* GPT
*/
if (gpt_gpt(fd, 1LL) == -1)
goto close;
if (gpt_gpt(fd, mediasz / secsz - 1LL) == -1)
goto close;
return (fd);
close:
close(fd);
return (-1);
}
void
gpt_close(int fd)
{
/* XXX post processing? */
close(fd);
}
static struct {
int (*fptr)(int, char *[]);
const char *name;
} cmdsw[] = {
{ NULL, "add" },
{ NULL, "create" },
{ NULL, "delete" },
{ cmd_destroy, "destroy" },
{ NULL, "help" },
{ cmd_migrate, "migrate" },
{ cmd_recover, "recover" },
{ NULL, "rename" },
{ cmd_show, "show" },
{ NULL, "verify" },
{ NULL, NULL }
};
static void
usage(void)
{
fprintf(stderr,
"usage: %s [-rv] [-p nparts] command [options] device\n",
getprogname());
exit(1);
}
static void
prefix(const char *cmd)
{
char *pfx;
const char *prg;
prg = getprogname();
pfx = malloc(strlen(prg) + strlen(cmd) + 2);
/* Don't bother failing. It's not important */
if (pfx == NULL)
return;
sprintf(pfx, "%s %s", prg, cmd);
setprogname(pfx);
}
int
main(int argc, char *argv[])
{
char *cmd, *p;
int ch, i;
/* Get the generic options */
while ((ch = getopt(argc, argv, "p:rv")) != -1) {
switch(ch) {
case 'p':
if (parts > 0)
usage();
parts = strtol(optarg, &p, 10);
if (*p != 0 || parts < 1)
usage();
break;
case 'r':
readonly = 1;
break;
case 'v':
verbose++;
break;
default:
usage();
}
}
if (!parts)
parts = 128;
if (argc == optind)
usage();
cmd = argv[optind++];
for (i = 0; cmdsw[i].name != NULL && strcmp(cmd, cmdsw[i].name); i++);
if (cmdsw[i].fptr == NULL)
errx(1, "unknown command: %s", cmd);
prefix(cmd);
return ((*cmdsw[i].fptr)(argc, argv));
}

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sbin/gpt/gpt.h Normal file
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/*
* 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.
*
* $FreeBSD$
*/
#ifndef _GPT_H_
#define _GPT_H_
struct mbr {
uint16_t mbr_code[223];
struct {
uint8_t part_flag; /* bootstrap flags */
uint8_t part_shd; /* starting head */
uint8_t part_ssect; /* starting sector */
uint8_t part_scyl; /* starting cylinder */
uint8_t part_typ; /* partition type */
uint8_t part_ehd; /* end head */
uint8_t part_esect; /* end sector */
uint8_t part_ecyl; /* end cylinder */
uint16_t part_start_lo; /* absolute starting ... */
uint16_t part_start_hi; /* ... sector number */
uint16_t part_size_lo; /* partition size ... */
uint16_t part_size_hi; /* ... in sectors */
} mbr_part[4];
uint16_t mbr_sig;
#define MBR_SIG 0xAA55
};
extern char device_name[];
extern off_t mediasz;
extern u_int parts;
extern u_int secsz;
extern int readonly, verbose;
uint32_t crc32(const void *, size_t);
void gpt_close(int);
int gpt_open(const char *);
void* gpt_read(int, off_t, size_t);
int gpt_write(int, map_t *);
void unicode16(short *, const wchar_t *, size_t);
int cmd_destroy(int, char *[]);
int cmd_migrate(int, char *[]);
int cmd_recover(int, char *[]);
int cmd_show(int, char *[]);
#endif /* _GPT_H_ */

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sbin/gpt/map.c Normal file
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/*
* 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 <err.h>
#include <stdio.h>
#include <stdlib.h>
#include "map.h"
static int lbawidth;
static map_t *mediamap;
static map_t *
mkmap(off_t start, off_t size, int type)
{
map_t *m;
m = malloc(sizeof(*m));
if (m == NULL)
return (NULL);
m->map_start = start;
m->map_size = size;
m->map_next = m->map_prev = NULL;
m->map_type = type;
m->map_data = NULL;
return (m);
}
map_t *
map_add(off_t start, off_t size, int type, void *data)
{
map_t *m, *n, *p;
n = mediamap;
while (n != NULL && n->map_start + n->map_size <= start)
n = n->map_next;
if (n == NULL)
return (NULL);
if (n->map_start + n->map_size < start + size) {
warnx("error: bogus map");
return (0);
}
if (n->map_start == start && n->map_size == size) {
if (n->map_type != MAP_TYPE_UNUSED)
warnx("warning: partition(%llu,%llu) mirrored",
(long long)start, (long long)size);
n->map_type = type;
n->map_data = data;
return (n);
}
if (n->map_type != MAP_TYPE_UNUSED) {
warnx(
"error: partition(%llu,%llu) overlaps partition(%llu,%llu)",
(long long)start, (long long)size,
(long long)n->map_start, (long long)n->map_size);
return (0);
}
m = mkmap(start, size, type);
if (m == NULL)
return (NULL);
m->map_data = data;
if (start == n->map_start) {
m->map_prev = n->map_prev;
m->map_next = n;
if (m->map_prev != NULL)
m->map_prev->map_next = m;
else
mediamap = m;
n->map_prev = m;
n->map_start += size;
n->map_size -= size;
} else if (start + size == n->map_start + n->map_size) {
p = n;
m->map_next = p->map_next;
m->map_prev = p;
if (m->map_next != NULL)
m->map_next->map_prev = m;
p->map_next = m;
p->map_size -= size;
} else {
p = mkmap(n->map_start, start - n->map_start, n->map_type);
n->map_start += p->map_size + m->map_size;
n->map_size -= (p->map_size + m->map_size);
p->map_prev = n->map_prev;
m->map_prev = p;
n->map_prev = m;
m->map_next = n;
p->map_next = m;
if (p->map_prev != NULL)
p->map_prev->map_next = p;
else
mediamap = p;
}
return (m);
}
map_t *
map_find(int type)
{
map_t *m;
m = mediamap;
while (m != NULL && m->map_type != type)
m = m->map_next;
return (m);
}
map_t *
map_first(void)
{
return mediamap;
}
map_t *
map_last(void)
{
map_t *m;
m = mediamap;
while (m != NULL && m->map_next != NULL)
m = m->map_next;
return (m);
}
off_t
map_unused(off_t start, off_t size)
{
map_t *m;
m = mediamap;
while (m != NULL && m->map_start + m->map_size <= start)
m = m->map_next;
if (m == NULL || m->map_type != MAP_TYPE_UNUSED)
return (0LL);
if (size)
return ((m->map_start + m->map_size >= start + size) ? 1 : 0);
return (m->map_size - (start - m->map_start));
}
void
map_dump(void)
{
off_t end;
map_t *m;
printf(" %*s", lbawidth, "start");
printf(" %*s", lbawidth, "end");
printf(" %*s", lbawidth, "size");
printf(" %s\n", "contents");
m = mediamap;
while (m != NULL) {
end = m->map_start + m->map_size - 1;
printf(" %*llu", lbawidth, (long long)m->map_start);
printf(" %*llu", lbawidth, (long long)end);
printf(" %*llu", lbawidth, (long long)m->map_size);
putchar(' '); putchar(' ');
switch (m->map_type) {
case MAP_TYPE_MBR:
printf("MBR");
break;
case MAP_TYPE_PRI_GPT_HDR:
printf("Pri GPT header");
break;
case MAP_TYPE_SEC_GPT_HDR:
printf("Sec GPT header");
break;
case MAP_TYPE_PRI_GPT_TBL:
printf("Pri GPT table");
break;
case MAP_TYPE_SEC_GPT_TBL:
printf("Sec GPT table");
break;
case MAP_TYPE_MBR_PART:
printf("MBR partition");
break;
case MAP_TYPE_GPT_PART:
printf("GPT partition");
break;
}
putchar('\n');
m = m->map_next;
}
}
void
map_init(off_t size)
{
char buf[32];
mediamap = mkmap(0LL, size, MAP_TYPE_UNUSED);
lbawidth = sprintf(buf, "%llu", (long long)size);
if (lbawidth < 5)
lbawidth = 5;
}

59
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/*
* 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.
*
* $FreeBSD$
*/
#ifndef _MAP_H_
#define _MAP_H_
typedef struct map {
off_t map_start;
off_t map_size;
struct map *map_next;
struct map *map_prev;
int map_type;
#define MAP_TYPE_UNUSED 0
#define MAP_TYPE_MBR 1
#define MAP_TYPE_MBR_PART 2
#define MAP_TYPE_PRI_GPT_HDR 3
#define MAP_TYPE_SEC_GPT_HDR 4
#define MAP_TYPE_PRI_GPT_TBL 5
#define MAP_TYPE_SEC_GPT_TBL 6
#define MAP_TYPE_GPT_PART 7
void *map_data;
} map_t;
map_t *map_add(off_t, off_t, int, void*);
map_t *map_find(int);
map_t *map_first(void);
map_t *map_last(void);
off_t map_unused(off_t, off_t);
void map_dump(void);
void map_init(off_t);
#endif /* _MAP_H_ */

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/*
* 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/uuid.h>
#include <sys/gpt.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"
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:
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_find(MAP_TYPE_MBR_PART) == NULL) {
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_unused(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;
uuidgen(&hdr->hdr_uuid, 1);
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++)
uuidgen(&ent[i].ent_uuid, 1);
/* 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 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:
continue;
}
}
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);
}

11
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#!/bin/sh
# $FreeBSD$
dd if=/dev/zero of=disk count=125307
sudo mdconfig -a -t vnode -f disk -u 4
sudo fdisk -f - md4 <<EOF
g c567 h13 s17
p 1 165 221 124865
EOF
sudo disklabel -w -r md4 pan60
sudo mdconfig -d -u 4

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/*
* 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/uuid.h>
#include <sys/gpt.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"
int recoverable;
static void
usage_recover(void)
{
fprintf(stderr,
"usage: %s device ...\n", getprogname());
exit(1);
}
static void
recover(int fd)
{
/* TODO */
}
int
cmd_recover(int argc, char *argv[])
{
int ch, fd;
while ((ch = getopt(argc, argv, "r")) != -1) {
switch(ch) {
case 'r':
recoverable = 1;
break;
default:
usage_recover();
}
}
if (argc == optind)
usage_recover();
while (optind < argc) {
fd = gpt_open(argv[optind++]);
if (fd == -1) {
warn("unable to open device '%s'", device_name);
continue;
}
recover(fd);
gpt_close(fd);
}
return (0);
}

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/*
* 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/uuid.h>
#include <sys/gpt.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"
static void
usage_show(void)
{
fprintf(stderr,
"usage: %s device ...\n", getprogname());
exit(1);
}
int
cmd_show(int argc, char *argv[])
{
int ch, fd;
while ((ch = getopt(argc, argv, "")) != -1) {
switch(ch) {
default:
usage_show();
}
}
if (argc == optind)
usage_show();
while (optind < argc) {
fd = gpt_open(argv[optind++]);
if (fd == -1) {
warn("unable to open device '%s'", device_name);
continue;
}
map_dump();
gpt_close(fd);
}
return (0);
}