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/*
File: apfs.c
Copyright (C) 2021 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 <time.h>
#include "types.h"
#include "common.h"
#include "apfs.h"
#include "fnctdsk.h"
#include "log.h"
#include "guid_cpy.h"
static void set_APFS_info(const nx_superblock_t *sb, partition_t *partition)
{
partition->upart_type=UP_APFS;
}
int check_APFS(disk_t *disk_car, partition_t *partition)
{
unsigned char *buffer=(unsigned char*)MALLOC(APFS_SUPERBLOCK_SIZE);
const nx_superblock_t* sb=(const nx_superblock_t *)buffer;
if(disk_car->pread(disk_car, buffer, APFS_SUPERBLOCK_SIZE, partition->part_offset) != APFS_SUPERBLOCK_SIZE)
{
free(buffer);
return 1;
}
if(test_APFS(sb, partition)!=0)
{
free(buffer);
return 1;
}
set_APFS_info(sb, partition);
free(buffer);
return 0;
}
int recover_APFS(const disk_t *disk, const nx_superblock_t *sb, partition_t *partition, const int verbose, const int dump_ind)
{
if(test_APFS(sb, partition)!=0)
return 1;
if(dump_ind!=0)
{
if(partition!=NULL && disk!=NULL)
log_info("\nAPFS magic value at %u/%u/%u\n",
offset2cylinder(disk,partition->part_offset),
offset2head(disk,partition->part_offset),
offset2sector(disk,partition->part_offset));
/* There is a little offset ... */
dump_log(sb,DEFAULT_SECTOR_SIZE);
}
if(partition==NULL)
return 0;
set_APFS_info(sb, partition);
partition->part_type_i386=P_LINUX;
partition->part_type_mac=PMAC_LINUX;
partition->part_type_sun=PSUN_LINUX;
partition->part_type_gpt=GPT_ENT_TYPE_MAC_APFS;
partition->part_size=le32(sb->nx_block_size) * le64(sb->nx_block_count);
guid_cpy(&partition->part_uuid, (const efi_guid_t *)&sb->nx_uuid);
if(verbose>0)
{
log_info("\n");
}
partition->sborg_offset=0;
partition->sb_size=le32(sb->nx_block_size);
partition->sb_offset=0;
if(verbose>0)
{
log_info("recover_APFS: s_blocksize=%u\n", partition->blocksize);
log_info("recover_APFS: s_blocks_count %lu\n", (long unsigned int)le64(sb->nx_block_count));
if(disk==NULL)
log_info("recover_APFS: part_size %lu\n", (long unsigned)(partition->part_size / DEFAULT_SECTOR_SIZE));
else
log_info("recover_APFS: part_size %lu\n", (long unsigned)(partition->part_size / disk->sector_size));
}
return 0;
}
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