freebsd-dev/sbin/gpt/add.c
Marcel Moolenaar c10b34ed19 Use strtoll(3) instead of strtol(3) for the starting block or
partition size. On 32-bit platforms sizeof(long) < sizeof(off_t)
and using strtol(3) would prevent partitions larger than 4G
sectors or beyond 4G blocks.

PR: bin/103991
MFC after: 3 days
2006-10-04 18:20:25 +00:00

218 lines
5.3 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.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 uuid_t type;
static off_t block, size;
static unsigned int entry;
static void
usage_add(void)
{
fprintf(stderr,
"usage: %s [-b lba] [-i index] [-s lba] [-t uuid] device ...\n",
getprogname());
exit(1);
}
static void
add(int fd)
{
map_t *gpt, *tpg;
map_t *tbl, *lbt;
map_t *map;
struct gpt_hdr *hdr;
struct gpt_ent *ent;
unsigned int i;
gpt = map_find(MAP_TYPE_PRI_GPT_HDR);
if (gpt == NULL) {
warnx("%s: error: no primary GPT header; run create or recover",
device_name);
return;
}
tpg = map_find(MAP_TYPE_SEC_GPT_HDR);
if (tpg == NULL) {
warnx("%s: error: no secondary GPT header; run recover",
device_name);
return;
}
tbl = map_find(MAP_TYPE_PRI_GPT_TBL);
lbt = map_find(MAP_TYPE_SEC_GPT_TBL);
if (tbl == NULL || lbt == NULL) {
warnx("%s: error: run recover -- trust me", device_name);
return;
}
hdr = gpt->map_data;
if (entry > le32toh(hdr->hdr_entries)) {
warnx("%s: error: index %u out of range (%u max)", device_name,
entry, le32toh(hdr->hdr_entries));
return;
}
if (entry > 0) {
i = entry - 1;
ent = (void*)((char*)tbl->map_data + i *
le32toh(hdr->hdr_entsz));
if (!uuid_is_nil(&ent->ent_type, NULL)) {
warnx("%s: error: entry at index %u is not free",
device_name, entry);
return;
}
} else {
/* Find empty slot in GPT table. */
for (i = 0; i < le32toh(hdr->hdr_entries); i++) {
ent = (void*)((char*)tbl->map_data + i *
le32toh(hdr->hdr_entsz));
if (uuid_is_nil(&ent->ent_type, NULL))
break;
}
if (i == le32toh(hdr->hdr_entries)) {
warnx("%s: error: no available table entries",
device_name);
return;
}
}
map = map_alloc(block, size);
if (map == NULL) {
warnx("%s: error: no space available on device", device_name);
return;
}
le_uuid_enc(&ent->ent_type, &type);
ent->ent_lba_start = htole64(map->map_start);
ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL);
hdr->hdr_crc_table = htole32(crc32(tbl->map_data,
le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz)));
hdr->hdr_crc_self = 0;
hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
gpt_write(fd, gpt);
gpt_write(fd, tbl);
hdr = tpg->map_data;
ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz));
le_uuid_enc(&ent->ent_type, &type);
ent->ent_lba_start = htole64(map->map_start);
ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL);
hdr->hdr_crc_table = htole32(crc32(lbt->map_data,
le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz)));
hdr->hdr_crc_self = 0;
hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
gpt_write(fd, lbt);
gpt_write(fd, tpg);
printf("%sp%u added\n", device_name, i + 1);
}
int
cmd_add(int argc, char *argv[])
{
char *p;
int ch, fd;
/* Get the migrate options */
while ((ch = getopt(argc, argv, "b:i:s:t:")) != -1) {
switch(ch) {
case 'b':
if (block > 0)
usage_add();
block = strtoll(optarg, &p, 10);
if (*p != 0 || block < 1)
usage_add();
break;
case 'i':
if (entry > 0)
usage_add();
entry = strtol(optarg, &p, 10);
if (*p != 0 || entry < 1)
usage_add();
break;
case 's':
if (size > 0)
usage_add();
size = strtoll(optarg, &p, 10);
if (*p != 0 || size < 1)
usage_add();
break;
case 't':
if (!uuid_is_nil(&type, NULL))
usage_add();
if (parse_uuid(optarg, &type) != 0)
usage_add();
break;
default:
usage_add();
}
}
if (argc == optind)
usage_add();
/* Create UFS partitions by default. */
if (uuid_is_nil(&type, NULL)) {
uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
type = ufs;
}
while (optind < argc) {
fd = gpt_open(argv[optind++]);
if (fd == -1) {
warn("unable to open device '%s'", device_name);
continue;
}
add(fd);
gpt_close(fd);
}
return (0);
}