Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sbin/gpt/backup.c

299 lines
8.2 KiB
C
Raw Blame History

/*-
* 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/show.c,v 1.14 2006/06/22 22:22:32 marcel Exp $");
#endif
#ifdef __RCSID
__RCSID("$NetBSD: backup.c,v 1.20 2020/06/08 22:52:09 thorpej Exp $");
#endif
#include <sys/bootblock.h>
#include <sys/types.h>
#include <assert.h>
#include <err.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <prop/proplib.h>
#include "map.h"
#include "gpt.h"
#include "gpt_private.h"
static const char *backuphelp[] = {
"[-o outfile]",
};
static int cmd_backup(gpt_t, int, char *[]);
struct gpt_cmd c_backup = {
"backup",
cmd_backup,
backuphelp, __arraycount(backuphelp),
GPT_READONLY,
};
#define usage() gpt_usage(NULL, &c_backup)
#define PROP_ERR(x) if (!(x)) goto cleanup
static int
store_mbr(gpt_t gpt, unsigned int i, const struct mbr *mbr,
prop_array_t *mbr_array)
{
prop_dictionary_t mbr_dict;
const struct mbr_part *par = &mbr->mbr_part[i];
if (mbr->mbr_part[i].part_typ == MBR_PTYPE_UNUSED)
return 0;
mbr_dict = prop_dictionary_create();
PROP_ERR(mbr_dict);
assert(i <= INT_MAX);
PROP_ERR(prop_dictionary_set_int(mbr_dict, "index", (int)i));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "flag", par->part_flag));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "start_head",
par->part_shd));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "start_sector",
par->part_ssect));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "start_cylinder",
par->part_scyl));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "type", par->part_typ));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "end_head", par->part_ehd));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "end_sector",
par->part_esect));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "end_cylinder",
par->part_ecyl));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "lba_start_low",
le16toh(par->part_start_lo)));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "lba_start_high",
le16toh(par->part_start_hi)));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "lba_size_low",
le16toh(par->part_size_lo)));
PROP_ERR(prop_dictionary_set_uint(mbr_dict, "lba_size_high",
le16toh(par->part_size_hi)));
if (*mbr_array == NULL) {
*mbr_array = prop_array_create();
PROP_ERR(*mbr_array);
}
PROP_ERR(prop_array_add_and_rel(*mbr_array, mbr_dict));
return 0;
cleanup:
if (mbr_dict)
prop_object_release(mbr_dict);
gpt_warnx(gpt, "proplib failure");
return -1;
}
static int
store_gpt(gpt_t gpt, const struct gpt_hdr *hdr, prop_dictionary_t *type_dict)
{
char buf[128];
*type_dict = prop_dictionary_create();
PROP_ERR(type_dict);
PROP_ERR(prop_dictionary_set_uint(*type_dict, "revision",
le32toh(hdr->hdr_revision)));
gpt_uuid_snprintf(buf, sizeof(buf), "%d", hdr->hdr_guid);
PROP_ERR(prop_dictionary_set_string(*type_dict, "guid", buf));
assert(le32toh(hdr->hdr_entries) <= INT32_MAX);
PROP_ERR(prop_dictionary_set_int32(*type_dict, "entries",
(int32_t)le32toh(hdr->hdr_entries)));
return 0;
cleanup:
if (*type_dict)
prop_object_release(*type_dict);
return -1;
}
static int
store_tbl(gpt_t gpt, const map_t m, prop_dictionary_t *type_dict)
{
const struct gpt_ent *ent;
unsigned int i;
prop_dictionary_t gpt_dict;
prop_array_t gpt_array;
char buf[128];
uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1];
bool rc;
*type_dict = NULL;
gpt_array = prop_array_create();
PROP_ERR(gpt_array);
*type_dict = prop_dictionary_create();
PROP_ERR(*type_dict);
ent = m->map_data;
for (i = 1, ent = m->map_data;
(const char *)ent < (const char *)(m->map_data) +
m->map_size * gpt->secsz; i++, ent++) {
gpt_dict = prop_dictionary_create();
PROP_ERR(gpt_dict);
assert(i <= INT_MAX);
PROP_ERR(prop_dictionary_set_int(gpt_dict, "index", (int)i));
gpt_uuid_snprintf(buf, sizeof(buf), "%d", ent->ent_type);
PROP_ERR(prop_dictionary_set_string(gpt_dict, "type", buf));
gpt_uuid_snprintf(buf, sizeof(buf), "%d", ent->ent_guid);
PROP_ERR(prop_dictionary_set_string(gpt_dict, "guid", buf));
PROP_ERR(prop_dictionary_set_uint64(gpt_dict, "start",
le64toh(ent->ent_lba_start)));
PROP_ERR(prop_dictionary_set_uint64(gpt_dict, "end",
le64toh(ent->ent_lba_end)));
PROP_ERR(prop_dictionary_set_uint64(gpt_dict, "attributes",
le64toh(ent->ent_attr)));
utf16_to_utf8(ent->ent_name, __arraycount(ent->ent_name),
utfbuf, __arraycount(utfbuf));
if (utfbuf[0] != '\0') {
PROP_ERR(prop_dictionary_set_string(gpt_dict, "name",
(char *)utfbuf));
}
rc = prop_array_add(gpt_array, gpt_dict);
PROP_ERR(rc);
}
rc = prop_dictionary_set_and_rel(*type_dict, "gpt_array", gpt_array);
PROP_ERR(rc);
return 0;
cleanup:
if (*type_dict)
prop_object_release(*type_dict);
if (gpt_array)
prop_object_release(gpt_array);
return -1;
}
static int
backup(gpt_t gpt, const char *outfile)
{
map_t m;
struct mbr *mbr;
unsigned int i;
prop_dictionary_t props, type_dict;
prop_array_t mbr_array;
char *propext;
bool rc;
FILE *fp;
props = prop_dictionary_create();
PROP_ERR(props);
assert(gpt->secsz <= INT_MAX);
PROP_ERR(prop_dictionary_set_int(props, "sector_size",
(int)gpt->secsz));
m = map_first(gpt);
while (m != NULL) {
switch (m->map_type) {
case MAP_TYPE_MBR:
case MAP_TYPE_PMBR:
type_dict = prop_dictionary_create();
PROP_ERR(type_dict);
mbr = m->map_data;
PROP_ERR(prop_dictionary_set_data_nocopy(type_dict,
"code", mbr->mbr_code, sizeof(mbr->mbr_code)));
mbr_array = NULL;
for (i = 0; i < 4; i++) {
if (store_mbr(gpt, i, mbr, &mbr_array) == -1)
goto cleanup;
}
if (mbr_array != NULL) {
rc = prop_dictionary_set_and_rel(type_dict,
"mbr_array", mbr_array);
PROP_ERR(rc);
}
rc = prop_dictionary_set_and_rel(props, "MBR",
type_dict);
PROP_ERR(rc);
break;
case MAP_TYPE_PRI_GPT_HDR:
if (store_gpt(gpt, m->map_data, &type_dict) == -1)
goto cleanup;
rc = prop_dictionary_set_and_rel(props, "GPT_HDR",
type_dict);
PROP_ERR(rc);
break;
case MAP_TYPE_PRI_GPT_TBL:
if (store_tbl(gpt, m, &type_dict) == -1)
goto cleanup;
rc = prop_dictionary_set_and_rel(props, "GPT_TBL",
type_dict);
PROP_ERR(rc);
break;
}
m = m->map_next;
}
propext = prop_dictionary_externalize(props);
PROP_ERR(propext);
prop_object_release(props);
fp = strcmp(outfile, "-") == 0 ? stdout : fopen(outfile, "w");
if (fp == NULL) {
gpt_warn(gpt, "Can't open `%s'", outfile);
free(propext);
goto cleanup;
}
fputs(propext, fp);
if (fp != stdout)
fclose(fp);
free(propext);
return 0;
cleanup:
if (props)
prop_object_release(props);
return -1;
}
static int
cmd_backup(gpt_t gpt, int argc, char *argv[])
{
int ch;
const char *outfile = "-";
while ((ch = getopt(argc, argv, "o:")) != -1) {
switch(ch) {
case 'o':
outfile = optarg;
break;
default:
return usage();
}
}
if (argc != optind)
return usage();
return backup(gpt, outfile);
}
Reference in New Issue View Git Blame Copy Permalink