int recover_EXFAT(const disk_t *disk, const struct exfat_super_block *exfat_header, partition_t *partition) { if(test_EXFAT(exfat_header)!=0) return 1; partition->sborg_offset=0; partition->sb_size=12 << exfat_header->blocksize_bits; partition->part_type_i386=P_EXFAT; partition->part_type_gpt=GPT_ENT_TYPE_MS_BASIC_DATA; partition->part_size=(uint64_t)le64(exfat_header->nr_sectors) * disk->sector_size; #ifdef DEBUG_EXFAT log_info("recover_EXFAT:\n"); log_info("start_sector=%llu\n", (long long unsigned)le64(exfat_header->start_sector)); log_info("blocksize=%u\n", (12<<exfat_header->blocksize_bits)); log_info("part_offset=%llu\n", partition->part_offset); #endif if((le64(exfat_header->start_sector) * disk ->sector_size + (12 << exfat_header->blocksize_bits) == partition->part_offset) || (disk->arch==&arch_none && (12 << exfat_header->blocksize_bits) == partition->part_offset)) { partition->sb_offset=12 << exfat_header->blocksize_bits; partition->part_offset-=partition->sb_offset; } set_EXFAT_info(partition, exfat_header); return 0; }
int check_EXFAT(disk_t *disk, partition_t *partition) { unsigned char *buffer=(unsigned char*)MALLOC(EXFAT_BS_SIZE); if(disk->pread(disk, buffer, EXFAT_BS_SIZE, partition->part_offset) != EXFAT_BS_SIZE) { free(buffer); return 1; } if(test_EXFAT((struct exfat_super_block*)buffer)!=0) { free(buffer); return 1; } set_EXFAT_info(partition, (struct exfat_super_block*)buffer); free(buffer); return 0; }
int exFAT_boot_sector(disk_t *disk, partition_t *partition, const int verbose, char **current_cmd) { unsigned char *buffer_bs; unsigned char *buffer_backup_bs; const char *options=""; int rescan=1; #ifdef HAVE_NCURSES struct MenuItem menu_exFAT[]= { { 'P', "Previous",""}, { 'N', "Next","" }, { 'Q', "Quit","Return to Advanced menu"}, { 'O', "Org. BS","Copy superblock over backup sector"}, { 'B', "Backup BS","Copy backup superblock over superblock"}, { 'D', "Dump","Dump superblock and backup superblock"}, { 0, NULL, NULL } }; #endif buffer_bs=(unsigned char*)MALLOC(12 * disk->sector_size); buffer_backup_bs=(unsigned char*)MALLOC(12 * disk->sector_size); while(1) { #ifdef HAVE_NCURSES unsigned int menu=0; #endif int command; screen_buffer_reset(); if(rescan==1) { int opt_over=0; int opt_B=0; int opt_O=0; options="D"; #ifdef HAVE_NCURSES aff_copy(stdscr); wmove(stdscr,4,0); wprintw(stdscr,"%s",disk->description(disk)); mvwaddstr(stdscr,5,0,msg_PART_HEADER_LONG); wmove(stdscr,6,0); aff_part(stdscr,AFF_PART_ORDER|AFF_PART_STATUS,disk,partition); #endif log_info("\nexFAT_boot_sector\n"); log_partition(disk,partition); screen_buffer_add("Boot sector\n"); if(disk->pread(disk, buffer_bs, 12 * disk->sector_size, partition->part_offset) != 12 * disk->sector_size) { screen_buffer_add("Bad: can't read exFAT boot record.\n"); memset(buffer_bs,0,12 * disk->sector_size); } else if(test_EXFAT((const struct exfat_super_block*)buffer_bs, partition)==0) { screen_buffer_add("exFAT OK\n"); opt_O=1; opt_over=1; } else screen_buffer_add("Bad\n"); screen_buffer_add("\nBackup boot record\n"); if(disk->pread(disk, buffer_backup_bs, 12 * disk->sector_size, partition->part_offset + 12 * disk->sector_size) != 12 * disk->sector_size) { screen_buffer_add("Bad: can't read exFAT backup boot record.\n"); memset(buffer_backup_bs,0,12 * disk->sector_size); } else if(test_EXFAT((const struct exfat_super_block*)buffer_backup_bs, partition)==0) { screen_buffer_add("exFAT OK\n"); opt_B=1; opt_over=1; } else screen_buffer_add("Bad\n"); screen_buffer_add("\n"); if(memcmp(buffer_bs,buffer_backup_bs,12 * disk->sector_size)==0) { screen_buffer_add("Sectors are identical.\n"); opt_over=0; } else { screen_buffer_add("Sectors are not identical.\n"); } if(opt_over!=0) { if(opt_B!=0 && opt_O!=0) options="DOB"; else if(opt_B!=0) options="DB"; else if(opt_O!=0) options="DO"; } rescan=0; } screen_buffer_to_log(); if(*current_cmd!=NULL) { command=0; while(*current_cmd[0]==',') (*current_cmd)++; if(strncmp(*current_cmd,"dump",4)==0) { (*current_cmd)+=4; command='D'; } else if(strncmp(*current_cmd,"originalexFAT",11)==0) { (*current_cmd)+=11; if(strchr(options,'O')!=NULL) command='O'; } else if(strncmp(*current_cmd,"backupexFAT",9)==0) { (*current_cmd)+=9; if(strchr(options,'B')!=NULL) command='B'; } } else { log_flush(); #ifdef HAVE_NCURSES command=screen_buffer_display_ext(stdscr, options, menu_exFAT, &menu); #else command=0; #endif } switch(command) { case 0: free(buffer_bs); free(buffer_backup_bs); return 0; case 'O': /* O : copy original superblock over backup boot */ #ifdef HAVE_NCURSES if(ask_confirmation("Copy original exFAT boot record over backup, confirm ? (Y/N)")!=0) { log_info("copy original superblock over backup boot\n"); if(disk->pwrite(disk, buffer_bs, 12 * disk->sector_size, partition->part_offset + 12 * disk->sector_size) != 12 * disk->sector_size) { display_message("Write error: Can't overwrite exFAT backup boot record\n"); } disk->sync(disk); rescan=1; } #endif break; case 'B': /* B : copy backup superblock over main superblock */ #ifdef HAVE_NCURSES if(ask_confirmation("Copy backup exFAT boot record over main boot record, confirm ? (Y/N)")!=0) { log_info("copy backup superblock over main superblock\n"); /* Reset information about backup boot record */ partition->sb_offset=0; if(disk->pwrite(disk, buffer_backup_bs, 12 * disk->sector_size, partition->part_offset) != 12 * disk->sector_size) { display_message("Write error: Can't overwrite exFAT main boot record\n"); } disk->sync(disk); rescan=1; } #endif break; case 'D': exFAT_dump(disk, partition, buffer_bs, buffer_backup_bs, current_cmd); break; } } }