dos.c

linux下开发的针对所有磁盘的数据恢复的源码

        snprintf(str, DESC_LEN,
            "AT&T MS-DOS 3.x Logically Sectored FAT. (0x56)");
        break;
    case 0x5c:
        snprintf(str, DESC_LEN, "Priam EDisk (0x5c)");
        break;
    case 0x70:
        snprintf(str, DESC_LEN, "DiskSecure Multi-Boot (0x70)");
        break;
    case 0x74:
        snprintf(str, DESC_LEN, "Scramdisk (0x74)");
        break;
    case 0x75:
        snprintf(str, DESC_LEN, "IBM PC/IX (0x75)");
        break;
        /*case 0x77:
           snprintf(str, DESC_LEN, "M2FS/M2CS (0x77)");
           break; */
    case 0x77:
        snprintf(str, DESC_LEN, "VNDI (0x77)");
        break;
    case 0x78:
        snprintf(str, DESC_LEN, "XOSL FS (0x78)");
        break;
    case 0x80:
        snprintf(str, DESC_LEN, "MINIX <=v1.4a (0x80)");
        break;
    case 0x81:
        snprintf(str, DESC_LEN, "MINIX >=v1.4b, Early Linux (0x81)");
        break;
        /*case 0x81:
           snprintf(str, DESC_LEN, "Mitac Disk Manager (0x81)");
           break; */
    case 0x87:
        snprintf(str, DESC_LEN, "NTFS Volume Set (0x87)");
        break;
    case 0x8a:
        snprintf(str, DESC_LEN, "Linux Kernel (0x8a)");
        break;
    case 0x8b:
        snprintf(str, DESC_LEN, "Legacy Fault Tolerant FAT32 (0x8b)");
        break;
    case 0x8c:
        snprintf(str, DESC_LEN,
            "Legacy Fault Tolerant FAT32 using BIOS extd INT 13h (0x8c)");
        break;
    case 0x8d:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden Primary DOS FAT12 (0x8d)");
        break;
    case 0x90:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden Primary DOS FAT16 (0x90)");
        break;
    case 0x91:
        snprintf(str, DESC_LEN, "Free FDISK Hidden DOS Extended (0x91)");
        break;
    case 0x92:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden Primary DOS Large FAT16 (0x92)");
        break;
    case 0x94:
        snprintf(str, DESC_LEN, "Amoeba Bad Block Table (0x94)");
        break;
    case 0x95:
        snprintf(str, DESC_LEN, "MIT EXOPC (0x95)");
        break;
    case 0x97:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden Primary DOS FAT32 (0x97)");
        break;
    case 0x98:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden Primary DOS FAT32 LBA (0x98)");
        break;
        /*case 0x98:
           snprintf(str, DESC_LEN, "Datalight ROM-DOS Super-Boot (0x98)");
           break; */
    case 0x99:
        snprintf(str, DESC_LEN, "DCE376 Logical Drive (0x99)");
        break;
    case 0x9a:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden Primary DOS FAT16 LBA (0x9a)");
        break;
    case 0x9b:
        snprintf(str, DESC_LEN,
            "Free FDISK Hidden DOS Extended LBA (0x9b)");
        break;
    case 0xa3:
        snprintf(str, DESC_LEN,
            "HP Volume Expansion (SpeedStor Variant) (0xa3)");
        break;
    case 0xa4:
        snprintf(str, DESC_LEN,
            "HP Volume Expansion (SpeedStor Variant) (0xa4)");
        break;
    case 0xaa:
        snprintf(str, DESC_LEN, "Olivetti Fat 12 1.44MB Service (0xaa)");
        break;
    case 0xae:
        snprintf(str, DESC_LEN, "ShagOS Filesystem (0xae)");
        break;
    case 0xaf:
        snprintf(str, DESC_LEN, "ShagOS swap (0xaf)");
        break;
    case 0xb0:
        snprintf(str, DESC_LEN, "BootStar Dummy (0xb0)");
        break;
    case 0xb1:
        snprintf(str, DESC_LEN,
            "HP Volume Expansion (SpeedStor Variant) (0xb1)");
        break;
    case 0xb3:
        snprintf(str, DESC_LEN,
            "HP Volume Expansion (SpeedStor Variant) (0xb3)");
        break;
    case 0xb4:
        snprintf(str, DESC_LEN,
            "HP Volume Expansion (SpeedStor Variant) (0xb4)");
        break;
        /*case 0xb6:
           snprintf(str, DESC_LEN, "HP Volume Expansion (SpeedStor Variant) (0xb6)");
           break; */
    case 0xb6:
        snprintf(str, DESC_LEN,
            "Corrupted Windows NT Mirror Set Master FAT16 (0xb6)");
        break;
    case 0xbb:
        snprintf(str, DESC_LEN, "Boot Wizard Hidden (0xbb)");
        break;
        /*case 0xc0:
           snprintf(str, DESC_LEN, "CTOS (0xc0)");
           break; */
        /*case 0xc0:
           snprintf(str, DESC_LEN, "REAL/32 Secure Small (0xc0)");
           break; */
        /*case 0xc0:
           snprintf(str, DESC_LEN, "NTFT (0xc0)");
           break; */
    case 0xc0:
        snprintf(str, DESC_LEN, "DR-DOS Secured (0xc0)");
        break;
    case 0xc1:
        snprintf(str, DESC_LEN, "DR-DOS Secured FAT12 (0xc1)");
        break;
    case 0xc4:
        snprintf(str, DESC_LEN, "DR-DOS Secured FAT16 <32M (0xc4)");
        break;
    case 0xc5:
        snprintf(str, DESC_LEN, "DR-DOS Secured Extended (0xc5)");
        break;
    case 0xc8:
        snprintf(str, DESC_LEN, "Reserved for DR-DOS 8.0+ (0xc8)");
        break;
    case 0xc9:
        snprintf(str, DESC_LEN, "Reserved for DR-DOS 8.0+ (0xc9)");
        break;
    case 0xca:
        snprintf(str, DESC_LEN, "Reserved for DR-DOS 8.0+ (0xca)");
        break;
    case 0xcb:
        snprintf(str, DESC_LEN, "DR-DOS 7.04+ Secured FAT32 CHS (0xcb)");
        break;
    case 0xcc:
        snprintf(str, DESC_LEN, "DR-DOS 7.04+ Secured FAT32 LBA (0xcc)");
        break;
    case 0xcd:
        snprintf(str, DESC_LEN, "CTOS Memdump? (0xcd)");
        break;
    case 0xce:
        snprintf(str, DESC_LEN, "DR-DOS 7.04+ FAT16X LBA (0xce)");
        break;
    case 0xcf:
        snprintf(str, DESC_LEN, "DR-DOS 7.04+ Secured EXT DOS LBA (0xcf)");
        break;
        /*case 0xd0:
           snprintf(str, DESC_LEN, "REAL/32 Secure Big (0xd0)");
           break; */
    case 0xd0:
        snprintf(str, DESC_LEN, "Multiuser DOS Secured (0xd0)");
        break;
    case 0xd1:
        snprintf(str, DESC_LEN, "Old Multiuser DOS Secured FAT12 (0xd1)");
        break;
    case 0xd4:
        snprintf(str, DESC_LEN,
            "Old Multiuser DOS Secured FAT16 <32M (0xd4)");
        break;
    case 0xd5:
        snprintf(str, DESC_LEN,
            "Old Multiuser DOS Secured extended (0xd5)");
        break;
    case 0xd6:
        snprintf(str, DESC_LEN,
            "Old Multiuser DOS Secured FAT16 >=32M (0xd6)");
        break;
    case 0xd8:
        snprintf(str, DESC_LEN, "CP/M-86 (0xd8)");
        break;
    case 0xda:
        snprintf(str, DESC_LEN, "Non-FS Data (0xda)");
        break;
    case 0xdb:
        snprintf(str, DESC_LEN,
            "Digital Research CP/M, Concurrent CP/M, Concurrent DOS (0xdb)");
        break;
        /*case 0xdb:
           snprintf(str, DESC_LEN, "Unisys CTOS (0xdb)");
           break; */
        /*case 0xdb:
           snprintf(str, DESC_LEN, "KDG Telemetry SCPU boot (0xdb)");
           break; */
    case 0xdd:
        snprintf(str, DESC_LEN, "Hidden CTOS Memdump?  (0xdd)");
        break;
    case 0xde:
        snprintf(str, DESC_LEN, "Dell Utilities FAT (0xde)");
        break;
        /*case 0xdf:
           snprintf(str, DESC_LEN, "DG/UX Virtual Disk Manager (0xdf)");
           break; */
        /*case 0xdf:
           snprintf(str, DESC_LEN, "BootIt EMBRM (0xdf)");
           break; */
    case 0xe0:
        snprintf(str, DESC_LEN,
            "Reserved by STMicroelectronics for ST AVFS. (0xe0)");
        break;
    case 0xe1:
        snprintf(str, DESC_LEN,
            "DOS Access or SpeedStor 12-bit FAT Extended (0xe1)");
        break;
    case 0xe3:
        snprintf(str, DESC_LEN, "DOS R/O or SpeedStor (0xe3)");
        break;
    case 0xe4:
        snprintf(str, DESC_LEN,
            "SpeedStor 16-bit FAT Extended <1024 cyl. (0xe4)");
        break;
    case 0xe5:
        snprintf(str, DESC_LEN,
            "Tandy MS-DOS with Logically Sectored FAT (0xe5)");
        break;
    case 0xe6:
        snprintf(str, DESC_LEN, "Storage Dimensions SpeedStor (0xe6)");
        break;
    case 0xeb:
        snprintf(str, DESC_LEN, "BeOS BFS (0xeb)");
        break;
    case 0xef:
        snprintf(str, DESC_LEN, "EFI File System (0xef)");
        break;
    case 0xf0:
        snprintf(str, DESC_LEN, "Linux/PA-RISC Boot Loader (0xf0)");
        break;
    case 0xf1:
        snprintf(str, DESC_LEN, "Storage Dimensions SpeedStor (0xf1)");
        break;
    case 0xf2:
        snprintf(str, DESC_LEN, "DOS 3.3+ Secondary (0xf2)");
        break;
    case 0xf4:
        snprintf(str, DESC_LEN, "SpeedStor Large (0xf4)");
        break;
        /*case 0xf4:
           snprintf(str, DESC_LEN, "Prologue Single-Volume (0xf4)");
           break; */
    case 0xf5:
        snprintf(str, DESC_LEN, "Prologue Multi-Volume (0xf5)");
        break;
    case 0xf6:
        snprintf(str, DESC_LEN, "Storage Dimensions SpeedStor (0xf6)");
        break;
    case 0xf9:
        snprintf(str, DESC_LEN, "pCache (0xf9)");
        break;
    case 0xfa:
        snprintf(str, DESC_LEN, "Bochs (0xfa)");
        break;
        /*case 0xfe:
           snprintf(str, DESC_LEN, "SpeedStor >1024 cyl. (0xfe)");
           break; */
        /*case 0xfe:
           snprintf(str, DESC_LEN, "LANstep (0xfe)");
           break; */
        /*case 0xfe:
           snprintf(str, DESC_LEN, "IBM PS/2 IML (0xfe)");
           break; */
    case 0xfe:
        snprintf(str, DESC_LEN,
            "Windows NT Disk Administrator Hidden (0xfe)");
        break;
        /*case 0xfe:
           snprintf(str, DESC_LEN, "Old Linux Logical Volume Manager (0xfe)");
           break; */
    case 0xff:
        snprintf(str, DESC_LEN, "Xenix Bad Block Table (0xff)");
        break;
    default:
        snprintf(str, DESC_LEN, "Unknown Type (0x%.2X)", ptype);
        break;
    }

    return str;
}

/* 
 * Load an extended partition table into the structure in TSK_VS_INFO.
 *
 * sect_cur: The sector where the extended table is located
 * sect_ext_base: The sector of the primary extended table (this does
 *   not change for recursive calls)
 * table: a counter that identifies the table depth 
 *   (increases by 1 for each recursive call)
 * 
 * For the primary extended table, sect_cur == sect_ext_base 
 *
 * Return 1 on error and 0 on success
 *
 */
static uint8_t
dos_load_ext_table(TSK_VS_INFO * vs, TSK_DADDR_T sect_cur,
    TSK_DADDR_T sect_ext_base, int table)
{
    dos_sect sect;
    int i;
    char *table_str;
    ssize_t cnt;
    TSK_DADDR_T max_addr = (vs->img_info->size - vs->offset) / vs->block_size;  // max sector

    if (tsk_verbose)
        tsk_fprintf(stderr,
            "dos_load_ext: Table Sector: %" PRIuDADDR
            ", Primary Base Sector: %" PRIuDADDR "\n", sect_cur,
            sect_ext_base);

    /* Read the partition table sector */
    cnt = tsk_vs_read_block(vs, sect_cur, (char *) &sect, sizeof(sect));
    if (cnt != sizeof(sect)) {
        if (cnt >= 0) {
            tsk_error_reset();
            tsk_errno = TSK_ERR_VS_READ;
        }
        snprintf(tsk_errstr2, TSK_ERRSTR_L,
            "Extended DOS table sector %" PRIuDADDR, sect_cur);
        return 1;
    }