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/*
File: sysv.c
Copyright (C) 2004-2007 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 "sysv.h"
#include "fnctdsk.h"
#include "log.h"
#define SYSV4_SECTOR_SIZE 512
#define SYSV4_SBLOCK 8192
#define SYSV4_MAGIC 0x00011954
#define SYSV4_CIGAM 0x54190100 /* byteswapped MAGIC */
/* HP specific MAGIC values */
#define SYSV4_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */
#define SYSV4_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */
#define SYSV4_MAGIC_SEC 0x00612195 /* B1 security fs */
#define SYSV4_CIGAM_SEC 0x95216100
#define SYSV4_MAGIC_FEA 0x00195612 /* fs_featurebits supported */
#define SYSV4_CIGAM_FEA 0x12561900
#define SYSV4_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */
#define SYSV4_CIGAM_4GB 0x94192305
static void set_sysv4_info(const struct sysv4_super_block *sbd, partition_t *partition);
static int test_sysv4(const disk_t *disk_car, const struct sysv4_super_block *sbd, const partition_t *partition, const int verbose);
int check_sysv(disk_t *disk_car,partition_t *partition,const int verbose)
{
unsigned char *buffer=(unsigned char*)MALLOC(SYSV4_SECTOR_SIZE);
if(disk_car->pread(disk_car, buffer, SYSV4_SECTOR_SIZE, partition->part_offset + 0x200) != SYSV4_SECTOR_SIZE)
{
free(buffer);
return 1;
}
if(test_sysv4(disk_car, (const struct sysv4_super_block *)buffer, partition, verbose)==0)
{
set_sysv4_info((const struct sysv4_super_block *)buffer, partition);
free(buffer);
return 0;
}
free(buffer);
return 1;
}
static int test_sysv4(const disk_t *disk_car, const struct sysv4_super_block *sbd, const partition_t *partition, const int verbose)
{
if ((unsigned)sbd->s_magic != le32(0xfd187e20) && (unsigned)sbd->s_magic != be32(0xfd187e20))
return 1;
if(verbose>0)
log_info("\nSYSV4 Marker at %u/%u/%u\n",
offset2cylinder(disk_car,partition->part_offset),
offset2head(disk_car,partition->part_offset),
offset2sector(disk_car,partition->part_offset));
return 0;
}
int recover_sysv(const disk_t *disk_car, const struct sysv4_super_block *sbd, partition_t *partition,const int verbose, const int dump_ind)
{
if(test_sysv4(disk_car, sbd,partition, verbose)!=0)
return 1;
if(verbose>0 || dump_ind!=0)
{
log_info("\nrecover_sysv4\n");
if(dump_ind!=0)
{
dump_log(sbd,sizeof(*sbd));
}
}
switch((unsigned)sbd->s_magic)
{
case le32(0xfd187e20):
partition->part_size = (uint64_t)le32(sbd->s_fsize)*(512<<(le32(sbd->s_type)-1));
break;
case be32(0xfd187e20):
partition->part_size = (uint64_t)be32(sbd->s_fsize)*(512<<(be32(sbd->s_type)-1));
break;
}
set_sysv4_info(sbd, partition);
partition->part_type_i386 = P_SYSV;
return 0;
}
static void set_sysv4_info(const struct sysv4_super_block *sbd, partition_t *partition)
{
partition->upart_type = UP_SYSV4;
strncpy(partition->info,"SysV4",sizeof(partition->info));
set_part_name(partition,sbd->s_fname,sizeof(sbd->s_fname));
}
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