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/*
File: md.c
Copyright (C) 1998-2008 Christophe GRENIER <grenier@cgsecurity.org>
This software is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "types.h"
#include "common.h"
#include "md.h"
#include "fnctdsk.h"
#include "log.h"
#ifndef DISABLED_FOR_FRAMAC
static int test_MD(const disk_t *disk_car, const struct mdp_superblock_s *sb, const partition_t *partition, const int dump_ind)
{
if(le32(sb->md_magic)!=(unsigned int)MD_SB_MAGIC)
return 1;
#ifndef DISABLED_FOR_FRAMAC
log_info("\nRaid magic value at %u/%u/%u\n",
offset2cylinder(disk_car,partition->part_offset),
offset2head(disk_car,partition->part_offset),
offset2sector(disk_car,partition->part_offset));
log_info("Raid apparent size: %llu sectors\n", (long long unsigned)(sb->size<<1));
if(le32(sb->major_version)==0)
{
/* chunk_size may be 0 */
log_info("Raid chunk size: %llu bytes\n", (long long unsigned)le32(sb->chunk_size));
}
#endif
if(le32(sb->major_version)>1)
return 1;
if(dump_ind!=0)
{
/* There is a little offset ... */
dump_log(sb,DEFAULT_SECTOR_SIZE);
}
return 0;
}
static int test_MD_be(const disk_t *disk_car, const struct mdp_superblock_s *sb, const partition_t *partition, const int dump_ind)
{
if(be32(sb->md_magic)!=(unsigned int)MD_SB_MAGIC)
return 1;
#ifndef DISABLED_FOR_FRAMAC
log_info("\nRaid magic value at %u/%u/%u\n",
offset2cylinder(disk_car,partition->part_offset),
offset2head(disk_car,partition->part_offset),
offset2sector(disk_car,partition->part_offset));
log_info("Raid apparent size: %llu sectors\n", (long long unsigned)(sb->size<<1));
if(be32(sb->major_version)==0)
{
/* chunk_size may be 0 */
log_info("Raid chunk size: %llu bytes\n",(long long unsigned)be32(sb->chunk_size));
}
#endif
if(be32(sb->major_version)>1)
return 1;
if(dump_ind!=0)
{
/* There is a little offset ... */
dump_log(sb,DEFAULT_SECTOR_SIZE);
}
return 0;
}
static void set_MD_info(const struct mdp_superblock_s *sb, partition_t *partition, const int verbose)
{
if(le32(sb->major_version)==0)
{
unsigned int i;
partition->upart_type=UP_MD;
sprintf(partition->fsname,"md%u",(unsigned int)le32(sb->md_minor));
sprintf(partition->info,"md %u.%u.%u L.Endian Raid %u: devices",
(unsigned int)le32(sb->major_version),
(unsigned int)le32(sb->minor_version),
(unsigned int)le32(sb->patch_version),
(unsigned int)le32(sb->level));
for(i=0;i<MD_SB_DISKS;i++)
{
if(le32(sb->disks[i].major)!=0 && le32(sb->disks[i].minor)!=0)
{
if(strlen(partition->info)<sizeof(partition->info)-26)
{
sprintf(&partition->info[strlen(partition->info)]," %u(%u,%u)",
(unsigned int)le32(sb->disks[i].number),
(unsigned int)le32(sb->disks[i].major),
(unsigned int)le32(sb->disks[i].minor));
if(le32(sb->disks[i].major)==le32(sb->this_disk.major) &&
le32(sb->disks[i].minor)==le32(sb->this_disk.minor))
sprintf(&partition->info[strlen(partition->info)],"*");
}
}
}
}
else
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)sb;
partition->upart_type=UP_MD1;
set_part_name(partition,sb1->set_name,32);
sprintf(partition->info,"md %u.x L.Endian Raid %u - Array Slot : %lu",
(unsigned int)le32(sb1->major_version),
(unsigned int)le32(sb1->level),
(long unsigned)le32(sb1->dev_number));
#ifndef DISABLED_FOR_FRAMAC
if(le32(sb1->max_dev) <= 384)
{
unsigned int i,d;
for (i= le32(sb1->max_dev); i> 0 ; i--)
if (le16(sb1->dev_roles[i-1]) != 0xffff)
break;
strcat(partition->info, " (");
for (d=0; d < i && strlen(partition->info) < sizeof(partition->info) - 9; d++)
{
const int role = le16(sb1->dev_roles[d]);
if (d)
strcat(partition->info, ", ");
if (role == 0xffff)
strcat(partition->info, "empty");
else if(role == 0xfffe)
strcat(partition->info, "failed");
else
sprintf(&partition->info[strlen(partition->info)], "%d", role);
}
strcat(partition->info, ")");
}
#endif
}
#ifndef DISABLED_FOR_FRAMAC
if(verbose>0)
log_info("%s %s\n", partition->fsname, partition->info);
#endif
}
static void set_MD_info_be(const struct mdp_superblock_s *sb, partition_t *partition, const int verbose)
{
if(be32(sb->major_version)==0)
{
unsigned int i;
partition->upart_type=UP_MD;
sprintf(partition->fsname,"md%u",(unsigned int)be32(sb->md_minor));
sprintf(partition->info,"md %u.%u.%u B.Endian Raid %u: devices",
(unsigned int)be32(sb->major_version),
(unsigned int)be32(sb->minor_version),
(unsigned int)be32(sb->patch_version),
(unsigned int)be32(sb->level));
for(i=0;i<MD_SB_DISKS;i++)
{
if(be32(sb->disks[i].major)!=0 && be32(sb->disks[i].minor)!=0)
{
if(strlen(partition->info)<sizeof(partition->info)-26)
{
sprintf(&partition->info[strlen(partition->info)]," %u(%u,%u)",
(unsigned int)be32(sb->disks[i].number),
(unsigned int)be32(sb->disks[i].major),
(unsigned int)be32(sb->disks[i].minor));
if(be32(sb->disks[i].major)==be32(sb->this_disk.major) &&
be32(sb->disks[i].minor)==be32(sb->this_disk.minor))
sprintf(&partition->info[strlen(partition->info)],"*");
}
}
}
}
else
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)sb;
partition->upart_type=UP_MD1;
set_part_name(partition,sb1->set_name,32);
sprintf(partition->info,"md %u.x B.Endian Raid %u - Array Slot : %lu",
(unsigned int)be32(sb1->major_version),
(unsigned int)be32(sb1->level),
(long unsigned)be32(sb1->dev_number));
#if !defined(DISABLED_FOR_FRAMAC)
if(be32(sb1->max_dev) <= 384)
{
unsigned int i,d;
for (i= be32(sb1->max_dev); i> 0 ; i--)
if (be16(sb1->dev_roles[i-1]) != 0xffff)
break;
strcat(partition->info, " (");
for (d=0; d < i && strlen(partition->info) < sizeof(partition->info) - 9; d++)
{
const int role = be16(sb1->dev_roles[d]);
if (d)
strcat(partition->info, ", ");
if (role == 0xffff)
strcat(partition->info, "empty");
else if(role == 0xfffe)
strcat(partition->info, "failed");
else
sprintf(&partition->info[strlen(partition->info)], "%d", role);
}
strcat(partition->info, ")");
}
#endif
}
#ifndef DISABLED_FOR_FRAMAC
if(verbose>0)
log_info("%s %s\n", partition->fsname, partition->info);
#endif
}
#endif
int check_MD(disk_t *disk_car, partition_t *partition, const int verbose)
{
#ifndef DISABLED_FOR_FRAMAC
unsigned char *buffer=(unsigned char*)MALLOC(MD_SB_BYTES);
/* MD version 1.1 */
if(disk_car->pread(disk_car, buffer, MD_SB_BYTES, partition->part_offset) == MD_SB_BYTES)
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)buffer;
if(le32(sb1->md_magic)==(unsigned int)MD_SB_MAGIC &&
le32(sb1->major_version)==1 &&
le64(sb1->super_offset)==0 &&
test_MD(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 1.1\n");
#endif
set_MD_info((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
if(be32(sb1->md_magic)==(unsigned int)MD_SB_MAGIC &&
be32(sb1->major_version)==1 &&
be64(sb1->super_offset)==0 &&
test_MD_be(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 1.1 (BigEndian)\n");
#endif
set_MD_info_be((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
}
/* MD version 1.2 */
if(disk_car->pread(disk_car, buffer, MD_SB_BYTES, partition->part_offset + 4096) == MD_SB_BYTES)
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)buffer;
if(le32(sb1->md_magic)==(unsigned int)MD_SB_MAGIC &&
le32(sb1->major_version)==1 &&
le64(sb1->super_offset)==8 &&
test_MD(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 1.2\n");
#endif
set_MD_info((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
if(be32(sb1->md_magic)==(unsigned int)MD_SB_MAGIC &&
be32(sb1->major_version)==1 &&
be64(sb1->super_offset)==8 &&
test_MD_be(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 1.2 (BigEndian)\n");
#endif
set_MD_info_be((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
}
/* MD version 0.90 */
{
const struct mdp_superblock_s *sb=(const struct mdp_superblock_s *)buffer;
const uint64_t offset=MD_NEW_SIZE_SECTORS(partition->part_size/512)*512;
#ifndef DISABLED_FOR_FRAMAC
if(verbose>1)
{
log_verbose("Raid md 0.90 offset %llu\n", (long long unsigned)offset/512);
}
#endif
if(disk_car->pread(disk_car, buffer, MD_SB_BYTES, partition->part_offset + offset) == MD_SB_BYTES)
{
if(le32(sb->md_magic)==(unsigned int)MD_SB_MAGIC &&
le32(sb->major_version)==0 &&
test_MD(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 0.90\n");
#endif
set_MD_info((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
if(be32(sb->md_magic)==(unsigned int)MD_SB_MAGIC &&
be32(sb->major_version)==0 &&
test_MD_be(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 0.90 (BigEndian)\n");
#endif
set_MD_info_be((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
}
}
/* MD version 1.0 */
if(partition->part_size > 8*2*512)
{
const uint64_t offset=(uint64_t)(((partition->part_size/512)-8*2) & ~(4*2-1))*512;
#ifndef DISABLED_FOR_FRAMAC
if(verbose>1)
{
log_verbose("Raid md 1.0 offset %llu\n", (long long unsigned)offset/512);
}
#endif
if(disk_car->pread(disk_car, buffer, MD_SB_BYTES, partition->part_offset + offset) == MD_SB_BYTES)
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)buffer;
if(le32(sb1->md_magic)==(unsigned int)MD_SB_MAGIC &&
le32(sb1->major_version)==1 &&
le64(sb1->super_offset)==(offset/512) &&
test_MD(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 1.0\n");
#endif
set_MD_info((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
if(be32(sb1->md_magic)==(unsigned int)MD_SB_MAGIC &&
be32(sb1->major_version)==1 &&
be64(sb1->super_offset)==(offset/512) &&
test_MD_be(disk_car, (struct mdp_superblock_s*)buffer, partition, 0)==0)
{
#ifndef DISABLED_FOR_FRAMAC
log_info("check_MD 1.0 (BigEndian)\n");
#endif
set_MD_info_be((struct mdp_superblock_s*)buffer, partition, verbose);
free(buffer);
return 0;
}
}
}
free(buffer);
#endif
return 1;
}
int recover_MD_from_partition(disk_t *disk_car, partition_t *partition, const int verbose)
{
#ifndef DISABLED_FOR_FRAMAC
unsigned char *buffer=(unsigned char*)MALLOC(MD_SB_BYTES);
/* MD version 0.90 */
{
const uint64_t offset=MD_NEW_SIZE_SECTORS(partition->part_size/512)*512;
if(disk_car->pread(disk_car, buffer, MD_SB_BYTES, partition->part_offset + offset) == MD_SB_BYTES)
{
if(recover_MD(disk_car,(struct mdp_superblock_s*)buffer,partition,verbose,0)==0)
{
free(buffer);
return 0;
}
}
}
/* MD version 1.0 */
if(partition->part_size > 8*2*512)
{
const uint64_t offset=(((partition->part_size/512)-8*2) & ~(4*2-1))*512;
if(disk_car->pread(disk_car, buffer, MD_SB_BYTES, partition->part_offset + offset) == MD_SB_BYTES)
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)buffer;
if(le32(sb1->major_version)==1 &&
recover_MD(disk_car,(struct mdp_superblock_s*)buffer,partition,verbose,0)==0)
{
partition->part_offset-=le64(sb1->super_offset)*512-offset;
free(buffer);
return 0;
}
}
}
/* md 1.1 & 1.2 don't need special operation to be recovered */
free(buffer);
#endif
return 1;
}
int recover_MD(const disk_t *disk_car, const struct mdp_superblock_s *sb, partition_t *partition, const int verbose, const int dump_ind)
{
#ifndef DISABLED_FOR_FRAMAC
if(test_MD(disk_car, sb, partition, dump_ind)==0)
{
set_MD_info(sb, partition, verbose);
partition->part_type_i386=P_RAID;
partition->part_type_sun=PSUN_RAID;
partition->part_type_gpt=GPT_ENT_TYPE_LINUX_RAID;
if(le32(sb->major_version)==0)
{
partition->part_size=(uint64_t)(le32(sb->size)<<1)*512+MD_RESERVED_BYTES; /* 512-byte sectors */
memcpy(&partition->part_uuid, &sb->set_uuid0, 4);
memcpy((char*)(&partition->part_uuid)+4, &sb->set_uuid1, 3*4);
}
else
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)sb;
partition->part_size=(uint64_t)le64(sb1->size) * 512 + 4096; /* 512-byte sectors */
memcpy(&partition->part_uuid, &sb1->set_uuid, 16);
}
return 0;
}
if(test_MD_be(disk_car, sb, partition, dump_ind)==0)
{
set_MD_info_be(sb, partition, verbose);
partition->part_type_i386=P_RAID;
partition->part_type_sun=PSUN_RAID;
partition->part_type_gpt=GPT_ENT_TYPE_LINUX_RAID;
if(be32(sb->major_version)==0)
{
partition->part_size=(uint64_t)(be32(sb->size)<<1)*512+MD_RESERVED_BYTES; /* 512-byte sectors */
memcpy(&partition->part_uuid, &sb->set_uuid0, 4);
memcpy((char*)(&partition->part_uuid)+4, &sb->set_uuid1, 3*4);
}
else
{
const struct mdp_superblock_1 *sb1=(const struct mdp_superblock_1 *)sb;
partition->part_size=(uint64_t)be64(sb1->size) * 512 + 4096; /* 512-byte sectors */
memcpy(&partition->part_uuid, &sb1->set_uuid, 16);
}
return 0;
}
#endif
return 1;
}
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