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NetBSD/sbin/gpt/add.c

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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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#ifdef __FBSDID
__FBSDID("$FreeBSD: src/sbin/gpt/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $");
#endif
#ifdef __RCSID
__RCSID("$NetBSD: add.c,v 1.27 2014/09/30 17:59:59 christos Exp $");
#endif
#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 gpt_uuid_t type;
static off_t alignment, block, sectors, size;
static unsigned int entry;
static uint8_t *name;
const char addmsg1[] = "add [-a alignment] [-b blocknr] [-i index] [-l label]";
const char addmsg2[] = " [-s size] [-t type] device ...";
__dead static void
usage_add(void)
{
fprintf(stderr,
"usage: %s %s\n"
" %*s %s\n", getprogname(), addmsg1,
(int)strlen(getprogname()), "", addmsg2);
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;
off_t alignsecs;
gpt = map_find(MAP_TYPE_PRI_GPT_HDR);
ent = NULL;
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 (!gpt_uuid_is_nil(ent->ent_type)) {
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 (gpt_uuid_is_nil(ent->ent_type))
break;
}
if (i == le32toh(hdr->hdr_entries)) {
warnx("%s: error: no available table entries",
device_name);
return;
}
}
if (alignment > 0) {
alignsecs = alignment / secsz;
map = map_alloc(block, sectors, alignsecs);
if (map == NULL) {
warnx("%s: error: not enough space available on "
"device for an aligned partition", device_name);
return;
}
} else {
map = map_alloc(block, sectors, 0);
if (map == NULL) {
warnx("%s: error: not enough space available on "
"device", device_name);
return;
}
}
gpt_uuid_copy(ent->ent_type, type);
ent->ent_lba_start = htole64(map->map_start);
ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL);
if (name != NULL)
utf8_to_utf16(name, ent->ent_name, 36);
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));
gpt_uuid_copy(ent->ent_type, type);
ent->ent_lba_start = htole64(map->map_start);
ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL);
if (name != NULL)
utf8_to_utf16(name, ent->ent_name, 36);
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("Partition %d added, use:\n", i + 1);
printf("\tdkctl %s addwedge <wedgename> %" PRIu64 " %" PRIu64
" <type>\n", device_arg, map->map_start, map->map_size);
printf("to create a wedge for it\n");
}
int
cmd_add(int argc, char *argv[])
{
char *p;
int ch, fd;
int64_t human_num;
while ((ch = getopt(argc, argv, "a:b:i:l:s:t:")) != -1) {
switch(ch) {
case 'a':
if (alignment > 0)
usage_add();
if (dehumanize_number(optarg, &human_num) < 0)
usage_add();
alignment = human_num;
if (alignment < 1)
usage_add();
break;
case 'b':
if (block > 0)
usage_add();
if (dehumanize_number(optarg, &human_num) < 0)
usage_add();
block = human_num;
if (block < 1)
usage_add();
break;
case 'i':
if (entry > 0)
usage_add();
entry = strtoul(optarg, &p, 10);
if (*p != 0 || entry < 1)
usage_add();
break;
case 'l':
if (name != NULL)
usage_add();
name = (uint8_t *)strdup(optarg);
break;
case 's':
if (sectors > 0 || size > 0)
usage_add();
sectors = strtoll(optarg, &p, 10);
if (sectors < 1)
usage_add();
if (*p == '\0')
break;
if (*p == 's' || *p == 'S') {
if (*(p + 1) == '\0')
break;
else
usage_add();
}
if (*p == 'b' || *p == 'B') {
if (*(p + 1) == '\0') {
size = sectors;
sectors = 0;
break;
} else
usage_add();
}
if (dehumanize_number(optarg, &human_num) < 0)
usage_add();
size = human_num;
sectors = 0;
break;
case 't':
if (!gpt_uuid_is_nil(type))
usage_add();
if (gpt_uuid_parse(optarg, type) != 0)
usage_add();
break;
default:
usage_add();
}
}
if (argc == optind)
usage_add();
/* Create NetBSD FFS partitions by default. */
if (gpt_uuid_is_nil(type)) {
gpt_uuid_create(GPT_TYPE_NETBSD_FFS, type, NULL, 0);
}
while (optind < argc) {
fd = gpt_open(argv[optind++]);
if (fd == -1) {
warn("unable to open device '%s'", device_name);
continue;
}
if (alignment % secsz != 0) {
warnx("Alignment must be a multiple of sector size;");
warnx("the sector size for %s is %d bytes.",
device_name, secsz);
continue;
}
if (size % secsz != 0) {
warnx("Size in bytes must be a multiple of sector "
"size;");
warnx("the sector size for %s is %d bytes.",
device_name, secsz);
continue;
}
if (size > 0)
sectors = size / secsz;
add(fd);
gpt_close(fd);
}
return (0);
}
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