105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/*
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File: cramfs.c
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Copyright (C) 1998-2007 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 "cramfs.h"
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#include "fnctdsk.h"
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#include "log.h"
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static void set_cramfs_info(const struct cramfs_super *sb, partition_t *partition);
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static int test_cramfs(const disk_t *disk_car, const struct cramfs_super *sb, const partition_t *partition, const int verbose);
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int check_cramfs(disk_t *disk_car,partition_t *partition,const int verbose)
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{
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unsigned char *buffer=(unsigned char*)MALLOC(CRAMFS_SUPERBLOCK_SIZE);
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if(disk_car->pread(disk_car, buffer, CRAMFS_SUPERBLOCK_SIZE, partition->part_offset + 0x200) == CRAMFS_SUPERBLOCK_SIZE)
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{
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if(test_cramfs(disk_car, (struct cramfs_super*)buffer, partition, verbose)==0)
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{
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set_cramfs_info((struct cramfs_super*)buffer, partition);
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free(buffer);
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return 0;
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}
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}
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if(disk_car->pread(disk_car, buffer, CRAMFS_SUPERBLOCK_SIZE, partition->part_offset) == CRAMFS_SUPERBLOCK_SIZE)
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{
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if(test_cramfs(disk_car, (struct cramfs_super*)buffer, partition, verbose)==0)
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{
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set_cramfs_info((struct cramfs_super*)buffer, partition);
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free(buffer);
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return 0;
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}
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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_cramfs(const disk_t *disk_car, const struct cramfs_super *sb, const partition_t *partition, const int verbose)
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{
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if (sb->magic!=le32(CRAMFS_MAGIC))
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return 1;
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if(partition==NULL)
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return 0;
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if(verbose>0)
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log_info("\ncramfs Marker at %u/%u/%u\n", offset2cylinder(disk_car,partition->part_offset),offset2head(disk_car,partition->part_offset),offset2sector(disk_car,partition->part_offset));
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return 0;
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}
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int recover_cramfs(const disk_t *disk_car, const struct cramfs_super *sb, partition_t *partition, const int verbose, const int dump_ind)
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{
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if(test_cramfs(disk_car, sb, 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_trace("\nrecover_cramfs\n");
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if(dump_ind!=0)
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{
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dump_log(sb,DEFAULT_SECTOR_SIZE);
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}
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}
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partition->part_size = sb->size;
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partition->part_type_i386 = P_LINUX;
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partition->part_type_mac= PMAC_LINUX;
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partition->part_type_sun= PSUN_LINUX;
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partition->part_type_gpt= GPT_ENT_TYPE_LINUX_DATA;
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set_cramfs_info(sb, partition);
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return 0;
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}
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static void set_cramfs_info(const struct cramfs_super *sb, partition_t *partition)
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{
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partition->upart_type = UP_CRAMFS;
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set_part_name(partition, (const char*)sb->name, 16);
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strncpy(partition->info,"cramfs",sizeof(partition->info));
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}
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