125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*
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File: sysv.c
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Copyright (C) 2004-2007 Christophe GRENIER <grenier@cgsecurity.org>
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This software is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write the Free Software Foundation, Inc., 51
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Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include "types.h"
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#include "common.h"
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#include "sysv.h"
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#include "fnctdsk.h"
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#include "log.h"
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#define SYSV4_SECTOR_SIZE 512
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#define SYSV4_SBLOCK 8192
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#define SYSV4_MAGIC 0x00011954
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#define SYSV4_CIGAM 0x54190100 /* byteswapped MAGIC */
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/* HP specific MAGIC values */
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#define SYSV4_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */
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#define SYSV4_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */
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#define SYSV4_MAGIC_SEC 0x00612195 /* B1 security fs */
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#define SYSV4_CIGAM_SEC 0x95216100
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#define SYSV4_MAGIC_FEA 0x00195612 /* fs_featurebits supported */
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#define SYSV4_CIGAM_FEA 0x12561900
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#define SYSV4_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */
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#define SYSV4_CIGAM_4GB 0x94192305
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static void set_sysv4_info(const struct sysv4_super_block *sbd, partition_t *partition);
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static int test_sysv4(const disk_t *disk_car, const struct sysv4_super_block *sbd, const partition_t *partition, const int verbose);
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int check_sysv(disk_t *disk_car,partition_t *partition,const int verbose)
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{
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unsigned char *buffer=(unsigned char*)MALLOC(SYSV4_SECTOR_SIZE);
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if(disk_car->pread(disk_car, buffer, SYSV4_SECTOR_SIZE, partition->part_offset + 0x200) != SYSV4_SECTOR_SIZE)
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{
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free(buffer);
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return 1;
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}
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if(test_sysv4(disk_car, (const struct sysv4_super_block *)buffer, partition, verbose)==0)
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{
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set_sysv4_info((const struct sysv4_super_block *)buffer, partition);
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free(buffer);
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return 0;
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}
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free(buffer);
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return 1;
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}
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static int test_sysv4(const disk_t *disk_car, const struct sysv4_super_block *sbd, const partition_t *partition, const int verbose)
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{
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if ((unsigned)sbd->s_magic != le32(0xfd187e20) && (unsigned)sbd->s_magic != be32(0xfd187e20))
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return 1;
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if(verbose>0)
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log_info("\nSYSV4 Marker at %u/%u/%u\n",
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offset2cylinder(disk_car,partition->part_offset),
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offset2head(disk_car,partition->part_offset),
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offset2sector(disk_car,partition->part_offset));
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return 0;
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}
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int recover_sysv(const disk_t *disk_car, const struct sysv4_super_block *sbd, partition_t *partition,const int verbose, const int dump_ind)
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{
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if(test_sysv4(disk_car, sbd,partition, verbose)!=0)
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return 1;
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if(verbose>0 || dump_ind!=0)
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{
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log_info("\nrecover_sysv4\n");
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if(dump_ind!=0)
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{
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dump_log(sbd,sizeof(*sbd));
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}
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}
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switch((unsigned)sbd->s_magic)
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{
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case le32(0xfd187e20):
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partition->part_size = (uint64_t)le32(sbd->s_fsize)*(512<<(le32(sbd->s_type)-1));
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break;
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case be32(0xfd187e20):
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partition->part_size = (uint64_t)be32(sbd->s_fsize)*(512<<(be32(sbd->s_type)-1));
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break;
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}
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set_sysv4_info(sbd, partition);
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partition->part_type_i386 = P_SYSV;
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return 0;
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}
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static void set_sysv4_info(const struct sysv4_super_block *sbd, partition_t *partition)
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{
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partition->upart_type = UP_SYSV4;
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strncpy(partition->info,"SysV4",sizeof(partition->info));
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set_part_name(partition,sbd->s_fname,sizeof(sbd->s_fname));
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}
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