include/pt-mbr.h

   1 #ifndef UTIL_LINUX_PT_MBR_H
   2 #define UTIL_LINUX_PT_MBR_H
   3
   4 struct dos_partition {
   5         unsigned char boot_ind;         /* 0x80 - active */
   6         unsigned char bh, bs, bc;       /* begin CHS */
   7         unsigned char sys_type;
   8         unsigned char eh, es, ec;       /* end CHS */
   9         unsigned char start_sect[4];
  10         unsigned char nr_sects[4];
  11 } __attribute__((packed));
  12
  13 #define MBR_PT_OFFSET           0x1be
  14
  15 /* assemble badly aligned little endian integer */
  16 static inline unsigned int __dos_assemble4le(const unsigned char *p)
  17 {
  18         return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
  19 }
  20
  21 static inline unsigned int dos_partition_start(struct dos_partition *p)
  22 {
  23         return __dos_assemble4le(&(p->start_sect[0]));
  24 }
  25
  26 static inline unsigned int dos_partition_size(struct dos_partition *p)
  27 {
  28         return __dos_assemble4le(&(p->nr_sects[0]));
  29 }
  30
  31 static inline int is_valid_mbr_signature(const unsigned char *mbr)
  32 {
  33         return mbr[510] == 0x55 && mbr[511] == 0xaa ? 1 : 0;
  34 }
  35
  36 static inline unsigned int dos_parttable_id(const unsigned char *mbr)
  37 {
  38         return __dos_assemble4le(&mbr[440]);
  39 }
  40
  41 enum {
  42         MBR_EMPTY_PARTITION             = 0x00,
  43         MBR_FAT12_PARTITION             = 0x01,
  44         MBR_XENIX_ROOT_PARTITION        = 0x02,
  45         MBR_XENIX_USR_PARTITION         = 0x03,
  46         MBR_FAT16_LESS32M_PARTITION     = 0x04,
  47         MBR_DOS_EXTENDED_PARTITION      = 0x05,
  48         MBR_FAT16_PARTITION             = 0x06, /* DOS 16-bit >=32M */
  49         MBR_HPFS_NTFS_PARTITION         = 0x07, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
  50         MBR_AIX_PARTITION               = 0x08, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
  51         MBR_AIX_BOOTABLE_PARTITION      = 0x09, /* AIX data or Coherent */
  52         MBR_OS2_BOOTMNGR_PARTITION      = 0x0a, /* OS/2 Boot Manager */
  53         MBR_W95_FAT32_PARTITION         = 0x0b,
  54         MBR_W95_FAT32_LBA_PARTITION     = 0x0c, /* LBA really is `Extended Int 13h' */
  55         MBR_W95_FAT16_LBA_PARTITION     = 0x0e,
  56         MBR_W95_EXTENDED_PARTITION      = 0x0f,
  57         MBR_OPUS_PARTITION              = 0x10,
  58         MBR_HIDDEN_FAT12_PARTITION      = 0x11,
  59         MBR_COMPAQ_DIAGNOSTICS_PARTITION = 0x12,
  60         MBR_HIDDEN_FAT16_L32M_PARTITION = 0x14,
  61         MBR_HIDDEN_FAT16_PARTITION      = 0x16,
  62         MBR_HIDDEN_HPFS_NTFS_PARTITION  = 0x17,
  63         MBR_AST_SMARTSLEEP_PARTITION    = 0x18,
  64         MBR_HIDDEN_W95_FAT32_PARTITION  = 0x1b,
  65         MBR_HIDDEN_W95_FAT32LBA_PARTITION = 0x1c,
  66         MBR_HIDDEN_W95_FAT16LBA_PARTITION = 0x1e,
  67         MBR_NEC_DOS_PARTITION           = 0x24,
  68         MBR_PLAN9_PARTITION             = 0x39,
  69         MBR_PARTITIONMAGIC_PARTITION    = 0x3c,
  70         MBR_VENIX80286_PARTITION        = 0x40,
  71         MBR_PPC_PREP_BOOT_PARTITION     = 0x41,
  72         MBR_SFS_PARTITION               = 0x42,
  73         MBR_QNX_4X_PARTITION            = 0x4d,
  74         MBR_QNX_4X_2ND_PARTITION        = 0x4e,
  75         MBR_QNX_4X_3RD_PARTITION        = 0x4f,
  76         MBR_DM_PARTITION                = 0x50,
  77         MBR_DM6_AUX1_PARTITION          = 0x51, /* (or Novell) */
  78         MBR_CPM_PARTITION               = 0x52, /* CP/M or Microport SysV/AT */
  79         MBR_DM6_AUX3_PARTITION          = 0x53,
  80         MBR_DM6_PARTITION               = 0x54,
  81         MBR_EZ_DRIVE_PARTITION          = 0x55,
  82         MBR_GOLDEN_BOW_PARTITION        = 0x56,
  83         MBR_PRIAM_EDISK_PARTITION       = 0x5c,
  84         MBR_SPEEDSTOR_PARTITION         = 0x61,
  85         MBR_GNU_HURD_PARTITION          = 0x63, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
  86         MBR_UNIXWARE_PARTITION          = MBR_GNU_HURD_PARTITION,
  87         MBR_NETWARE_286_PARTITION       = 0x64,
  88         MBR_NETWARE_386_PARTITION       = 0x65,
  89         MBR_DISKSECURE_MULTIBOOT_PARTITION = 0x70,
  90         MBR_PC_IX_PARTITION             = 0x75,
  91         MBR_OLD_MINIX_PARTITION         = 0x80, /* Minix 1.4a and earlier */
  92         MBR_MINIX_PARTITION             = 0x81, /* Minix 1.4b and later */
  93         MBR_LINUX_SWAP_PARTITION        = 0x82,
  94         MBR_SOLARIS_X86_PARTITION       = MBR_LINUX_SWAP_PARTITION,
  95         MBR_LINUX_DATA_PARTITION        = 0x83,
  96         MBR_OS2_HIDDEN_DRIVE_PARTITION  = 0x84,
  97         MBR_LINUX_EXTENDED_PARTITION    = 0x85,
  98         MBR_NTFS_VOL_SET1_PARTITION     = 0x86,
  99         MBR_NTFS_VOL_SET2_PARTITION     = 0x87,
 100         MBR_LINUX_PLAINTEXT_PARTITION   = 0x88,
 101         MBR_LINUX_LVM_PARTITION         = 0x8e,
 102         MBR_AMOEBA_PARTITION            = 0x93,
 103         MBR_AMOEBA_BBT_PARTITION        = 0x94, /* (bad block table) */
 104         MBR_BSD_OS_PARTITION            = 0x9f, /* BSDI */
 105         MBR_THINKPAD_HIBERNATION_PARTITION = 0xa0,
 106         MBR_FREEBSD_PARTITION           = 0xa5, /* various BSD flavours */
 107         MBR_OPENBSD_PARTITION           = 0xa6,
 108         MBR_NEXTSTEP_PARTITION          = 0xa7,
 109         MBR_DARWIN_UFS_PARTITION        = 0xa8,
 110         MBR_NETBSD_PARTITION            = 0xa9,
 111         MBR_DARWIN_BOOT_PARTITION       = 0xab,
 112         MBR_HFS_HFS_PARTITION           = 0xaf,
 113         MBR_BSDI_FS_PARTITION           = 0xb7,
 114         MBR_BSDI_SWAP_PARTITION         = 0xb8,
 115         MBR_BOOTWIZARD_HIDDEN_PARTITION = 0xbb,
 116         MBR_SOLARIS_BOOT_PARTITION      = 0xbe,
 117         MBR_SOLARIS_PARTITION           = 0xbf,
 118         MBR_DRDOS_FAT12_PARTITION       = 0xc1,
 119         MBR_DRDOS_FAT16_L32M_PARTITION  = 0xc4,
 120         MBR_DRDOS_FAT16_PARTITION       = 0xc6,
 121         MBR_SYRINX_PARTITION            = 0xc7,
 122         MBR_NONFS_DATA_PARTITION        = 0xda,
 123         MBR_CPM_CTOS_PARTITION          = 0xdb, /* CP/M or Concurrent CP/M or Concurrent DOS or CTOS */
 124         MBR_DELL_UTILITY_PARTITION      = 0xde, /* Dell PowerEdge Server utilities */
 125         MBR_BOOTIT_PARTITION            = 0xdf, /* BootIt EMBRM */
 126         MBR_DOS_ACCESS_PARTITION        = 0xe1, /* DOS access or SpeedStor 12-bit FAT extended partition */
 127         MBR_DOS_RO_PARTITION            = 0xe3, /* DOS R/O or SpeedStor */
 128         MBR_SPEEDSTOR_EXTENDED_PARTITION = 0xe4, /* SpeedStor 16-bit FAT extended partition < 1024 cyl. */
 129         MBR_BEOS_FS_PARTITION           = 0xeb,
 130         MBR_GPT_PARTITION               = 0xee, /* Intel EFI GUID Partition Table */
 131         MBR_EFI_SYSTEM_PARTITION        = 0xef, /* Intel EFI System Partition */
 132         MBR_LINUX_PARISC_BOOT_PARTITION = 0xf0, /* Linux/PA-RISC boot loader */
 133         MBR_SPEEDSTOR1_PARTITION        = 0xf1,
 134         MBR_SPEEDSTOR2_PARTITION        = 0xf4, /* SpeedStor large partition */
 135         MBR_DOS_SECONDARY_PARTITION     = 0xf2, /* DOS 3.3+ secondary */
 136         MBR_VMWARE_VMFS_PARTITION       = 0xfb,
 137         MBR_VMWARE_VMKCORE_PARTITION    = 0xfc, /* VMware kernel dump partition */
 138         MBR_LINUX_RAID_PARTITION        = 0xfd, /* New (2.2.x) raid partition with autodetect using persistent superblock */
 139         MBR_LANSTEP_PARTITION           = 0xfe, /* SpeedStor >1024 cyl. or LANstep */
 140         MBR_XENIX_BBT_PARTITION         = 0xff, /* Xenix Bad Block Table */
 141 };
 142
 143 #endif /* UTIL_LINUX_PT_MBR_H */