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/*
File: bsd.c
Copyright (C) 1998-2006,2008 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
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#include "types.h"
#include "common.h"
#include "bsd.h"
#include "intrf.h"
#include "log.h"
static int test_BSD(const disk_t *disk_car, const struct disklabel*bsd_header, const partition_t *partition,const int verbose, const int dump_ind, const unsigned int max_partitions)
{
unsigned int i;
const uint16_t* cp;
uint16_t crc;
if(le32(bsd_header->d_magic) != DISKMAGIC || le32(bsd_header->d_magic2)!=DISKMAGIC)
return 0;
if(verbose)
log_info("\nBSD offset %lu, nbr_part %u, CHS=(%u,%u,%u) ",
(long unsigned)(partition->part_offset/disk_car->sector_size),
(unsigned int)le16(bsd_header->d_npartitions),
(unsigned int)le32(bsd_header->d_ncylinders),
(unsigned int)le32(bsd_header->d_ntracks),
(unsigned int)le32(bsd_header->d_nsectors));
if(le16(bsd_header->d_npartitions) > max_partitions)
return 1;
crc=0;
for(cp=(const uint16_t*)bsd_header;
cp<(const uint16_t*)&bsd_header->d_partitions[le16(bsd_header->d_npartitions)];cp++)
crc^=*cp;
if(crc==0)
{
if(verbose>0)
{
log_info("CRC Ok\n");
}
}
else
log_error("Bad CRC! CRC must be xor'd by %04X\n",crc);
for(i=0;i<le16(bsd_header->d_npartitions);i++)
{
if(bsd_header->d_partitions[i].p_fstype>0)
{
if(verbose>0)
{
/* UFS UFS2 SWAP */
log_info("BSD %c: ", 'a'+i);
switch(bsd_header->d_partitions[i].p_fstype)
{
case TST_FS_SWAP:
log_info("swap");
break;
case TST_FS_BSDFFS:
log_info("4.2BSD fast filesystem");
break;
case TST_FS_BSDLFS:
log_info("4.4BSD log-structured filesystem");
break;
default:
log_info("type %02X", bsd_header->d_partitions[i].p_fstype);
break;
}
log_info(", offset %9u, size %9u ",
(unsigned int)le32(bsd_header->d_partitions[i].p_offset),
(unsigned int)le32(bsd_header->d_partitions[i].p_size));
log_CHS_from_LBA(disk_car,le32(bsd_header->d_partitions[i].p_offset));
log_info(" -> ");
log_CHS_from_LBA(disk_car,le32(bsd_header->d_partitions[i].p_offset)+le32(bsd_header->d_partitions[i].p_size)-1);
log_info("\n");
}
}
}
if(crc)
return 1;
if(dump_ind!=0)
{
dump_log(bsd_header,DEFAULT_SECTOR_SIZE);
}
return 0;
}
int check_BSD(disk_t *disk_car,partition_t *partition,const int verbose, const unsigned int max_partitions)
{
unsigned char *buffer;
buffer=(unsigned char*)MALLOC(BSD_DISKLABEL_SIZE);
if(disk_car->pread(disk_car, buffer, BSD_DISKLABEL_SIZE, partition->part_offset + 0x200) != BSD_DISKLABEL_SIZE)
{
free(buffer);
return 1;
}
if(test_BSD(disk_car,(const struct disklabel*)buffer,partition,verbose,0,max_partitions))
{
free(buffer);
return 1;
}
set_part_name(partition,((const struct disklabel*)buffer)->d_packname,16);
free(buffer);
return 0;
}
int recover_BSD(const disk_t *disk_car, const struct disklabel*bsd_header,partition_t *partition,const int verbose, const int dump_ind)
{
int i;
int i_max_p_offset=-1;
if(test_BSD(disk_car,bsd_header,partition,verbose,dump_ind,BSD_MAXPARTITIONS)==0)
{
partition->upart_type=UP_FREEBSD;
for(i=0;i<BSD_MAXPARTITIONS;i++)
{
if(bsd_header->d_partitions[i].p_fstype>0)
{
if(i_max_p_offset==-1 || le32(bsd_header->d_partitions[i].p_offset)>le32(bsd_header->d_partitions[i_max_p_offset].p_offset))
i_max_p_offset=i;
}
}
if(i_max_p_offset>=0)
partition->part_size=(uint64_t)(le32(bsd_header->d_partitions[i_max_p_offset].p_size) +
le32(bsd_header->d_partitions[i_max_p_offset].p_offset) - 1) * disk_car->sector_size - partition->part_offset;
else
partition->part_size=0;
partition->part_type_i386=P_FREEBSD;
set_part_name(partition,bsd_header->d_packname,16);
partition->info[0]='\0';
return 0;
}
if(test_BSD(disk_car,bsd_header,partition,verbose,dump_ind,OPENBSD_MAXPARTITIONS)==0)
{
partition->upart_type=UP_OPENBSD;
for(i=0;i<OPENBSD_MAXPARTITIONS;i++)
{
if(bsd_header->d_partitions[i].p_fstype>0)
{
if(i_max_p_offset==-1 || le32(bsd_header->d_partitions[i].p_offset)>le32(bsd_header->d_partitions[i_max_p_offset].p_offset))
i_max_p_offset=i;
}
}
if(i_max_p_offset>=0)
partition->part_size=(uint64_t)(le32(bsd_header->d_partitions[i_max_p_offset].p_size) +
le32(bsd_header->d_partitions[i_max_p_offset].p_offset) - 1) * disk_car->sector_size - partition->part_offset;
else
partition->part_size=0;
partition->part_type_i386=P_OPENBSD;
set_part_name(partition,bsd_header->d_packname,16);
partition->info[0]='\0';
return 0;
}
return 1;
}
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