[thirdparty/util-linux.git] / include / pt-mbr.h

#ifndef UTIL_LINUX_PT_MBR_H
#define UTIL_LINUX_PT_MBR_H

#include <assert.h>

struct dos_partition {
	unsigned char boot_ind;		/* 0x80 - active */
	unsigned char bh, bs, bc;	/* begin CHS */
	unsigned char sys_ind;
	unsigned char eh, es, ec;	/* end CHS */
	unsigned char start_sect[4];
	unsigned char nr_sects[4];
} __attribute__((packed));

#define MBR_PT_OFFSET		0x1be
#define MBR_PT_BOOTBITS_SIZE	440

static inline struct dos_partition *mbr_get_partition(unsigned char *mbr, int i)
{
	return (struct dos_partition *)
		(mbr + MBR_PT_OFFSET + (i * sizeof(struct dos_partition)));
}

/* assemble badly aligned little endian integer */
static inline unsigned int __dos_assemble_4le(const unsigned char *p)
{
	return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
}

static inline void __dos_store_4le(unsigned char *p, unsigned int val)
{
	assert(!(p == NULL));
	p[0] = (val & 0xff);
	p[1] = ((val >> 8) & 0xff);
	p[2] = ((val >> 16) & 0xff);
	p[3] = ((val >> 24) & 0xff);
}

static inline unsigned int dos_partition_get_start(struct dos_partition *p)
{
	return __dos_assemble_4le(&(p->start_sect[0]));
}

static inline void dos_partition_set_start(struct dos_partition *p, unsigned int n)
{
	__dos_store_4le(p->start_sect, n);
}

static inline unsigned int dos_partition_get_size(struct dos_partition *p)
{
	return __dos_assemble_4le(&(p->nr_sects[0]));
}

static inline void dos_partition_set_size(struct dos_partition *p, unsigned int n)
{
	__dos_store_4le(p->nr_sects, n);
}

static inline int mbr_is_valid_magic(const unsigned char *mbr)
{
	return mbr[510] == 0x55 && mbr[511] == 0xaa ? 1 : 0;
}

static inline void mbr_set_magic(unsigned char *b)
{
	b[510] = 0x55;
	b[511] = 0xaa;
}

static inline unsigned int mbr_get_id(const unsigned char *mbr)
{
	return __dos_assemble_4le(&mbr[440]);
}

static inline void mbr_set_id(unsigned char *b, unsigned int id)
{
	__dos_store_4le(&b[440], id);
}

enum {
	MBR_EMPTY_PARTITION		= 0x00,
	MBR_FAT12_PARTITION		= 0x01,
	MBR_XENIX_ROOT_PARTITION	= 0x02,
	MBR_XENIX_USR_PARTITION		= 0x03,
	MBR_FAT16_LESS32M_PARTITION	= 0x04,
	MBR_DOS_EXTENDED_PARTITION	= 0x05,
	MBR_FAT16_PARTITION		= 0x06, /* DOS 16-bit >=32M */
	MBR_HPFS_NTFS_PARTITION		= 0x07, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
	MBR_AIX_PARTITION		= 0x08, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
	MBR_AIX_BOOTABLE_PARTITION	= 0x09, /* AIX data or Coherent */
	MBR_OS2_BOOTMNGR_PARTITION	= 0x0a, /* OS/2 Boot Manager */
	MBR_W95_FAT32_PARTITION		= 0x0b,
	MBR_W95_FAT32_LBA_PARTITION	= 0x0c, /* LBA really is `Extended Int 13h' */
	MBR_W95_FAT16_LBA_PARTITION	= 0x0e,
	MBR_W95_EXTENDED_PARTITION	= 0x0f,
	MBR_OPUS_PARTITION		= 0x10,
	MBR_HIDDEN_FAT12_PARTITION	= 0x11,
	MBR_COMPAQ_DIAGNOSTICS_PARTITION = 0x12,
	MBR_HIDDEN_FAT16_L32M_PARTITION	= 0x14,
	MBR_HIDDEN_FAT16_PARTITION	= 0x16,
	MBR_HIDDEN_HPFS_NTFS_PARTITION	= 0x17,
	MBR_AST_SMARTSLEEP_PARTITION	= 0x18,
	MBR_HIDDEN_W95_FAT32_PARTITION	= 0x1b,
	MBR_HIDDEN_W95_FAT32LBA_PARTITION = 0x1c,
	MBR_HIDDEN_W95_FAT16LBA_PARTITION = 0x1e,
	MBR_NEC_DOS_PARTITION		= 0x24,
	MBR_PLAN9_PARTITION		= 0x39,
	MBR_PARTITIONMAGIC_PARTITION	= 0x3c,
	MBR_VENIX80286_PARTITION	= 0x40,
	MBR_PPC_PREP_BOOT_PARTITION	= 0x41,
	MBR_SFS_PARTITION		= 0x42,
	MBR_QNX_4X_PARTITION		= 0x4d,
	MBR_QNX_4X_2ND_PARTITION	= 0x4e,
	MBR_QNX_4X_3RD_PARTITION	= 0x4f,
	MBR_DM_PARTITION		= 0x50,
	MBR_DM6_AUX1_PARTITION		= 0x51, /* (or Novell) */
	MBR_CPM_PARTITION		= 0x52, /* CP/M or Microport SysV/AT */
	MBR_DM6_AUX3_PARTITION		= 0x53,
	MBR_DM6_PARTITION		= 0x54,
	MBR_EZ_DRIVE_PARTITION		= 0x55,
	MBR_GOLDEN_BOW_PARTITION	= 0x56,
	MBR_PRIAM_EDISK_PARTITION	= 0x5c,
	MBR_SPEEDSTOR_PARTITION		= 0x61,
	MBR_GNU_HURD_PARTITION		= 0x63, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
	MBR_UNIXWARE_PARTITION		= MBR_GNU_HURD_PARTITION,
	MBR_NETWARE_286_PARTITION	= 0x64,
	MBR_NETWARE_386_PARTITION	= 0x65,
	MBR_DISKSECURE_MULTIBOOT_PARTITION = 0x70,
	MBR_PC_IX_PARTITION		= 0x75,
	MBR_OLD_MINIX_PARTITION		= 0x80, /* Minix 1.4a and earlier */
	MBR_MINIX_PARTITION		= 0x81, /* Minix 1.4b and later */
	MBR_LINUX_SWAP_PARTITION	= 0x82,
	MBR_SOLARIS_X86_PARTITION	= MBR_LINUX_SWAP_PARTITION,
	MBR_LINUX_DATA_PARTITION	= 0x83,
	MBR_OS2_HIDDEN_DRIVE_PARTITION	= 0x84, /* also hibernation MS APM, Intel Rapid Start */
	MBR_INTEL_HIBERNATION_PARTITION	= MBR_OS2_HIDDEN_DRIVE_PARTITION,
	MBR_LINUX_EXTENDED_PARTITION	= 0x85,
	MBR_NTFS_VOL_SET1_PARTITION	= 0x86,
	MBR_NTFS_VOL_SET2_PARTITION	= 0x87,
	MBR_LINUX_PLAINTEXT_PARTITION	= 0x88,
	MBR_LINUX_LVM_PARTITION		= 0x8e,
	MBR_AMOEBA_PARTITION		= 0x93,
	MBR_AMOEBA_BBT_PARTITION	= 0x94, /* (bad block table) */
	MBR_BSD_OS_PARTITION		= 0x9f, /* BSDI */
	MBR_THINKPAD_HIBERNATION_PARTITION = 0xa0,
	MBR_FREEBSD_PARTITION		= 0xa5, /* various BSD flavours */
	MBR_OPENBSD_PARTITION		= 0xa6,
	MBR_NEXTSTEP_PARTITION		= 0xa7,
	MBR_DARWIN_UFS_PARTITION	= 0xa8,
	MBR_NETBSD_PARTITION		= 0xa9,
	MBR_DARWIN_BOOT_PARTITION	= 0xab,
	MBR_HFS_HFS_PARTITION		= 0xaf,
	MBR_BSDI_FS_PARTITION		= 0xb7,
	MBR_BSDI_SWAP_PARTITION		= 0xb8,
	MBR_BOOTWIZARD_HIDDEN_PARTITION	= 0xbb,
	MBR_ACRONIS_FAT32LBA_PARTITION  = 0xbc, /* Acronis Secure Zone with ipl for loader F11.SYS */
	MBR_SOLARIS_BOOT_PARTITION	= 0xbe,
	MBR_SOLARIS_PARTITION		= 0xbf,
	MBR_DRDOS_FAT12_PARTITION	= 0xc1,
	MBR_DRDOS_FAT16_L32M_PARTITION	= 0xc4,
	MBR_DRDOS_FAT16_PARTITION	= 0xc6,
	MBR_SYRINX_PARTITION		= 0xc7,
	MBR_NONFS_DATA_PARTITION	= 0xda,
	MBR_CPM_CTOS_PARTITION		= 0xdb, /* CP/M or Concurrent CP/M or Concurrent DOS or CTOS */
	MBR_DELL_UTILITY_PARTITION	= 0xde, /* Dell PowerEdge Server utilities */
	MBR_BOOTIT_PARTITION		= 0xdf, /* BootIt EMBRM */
	MBR_DOS_ACCESS_PARTITION	= 0xe1, /* DOS access or SpeedStor 12-bit FAT extended partition */
	MBR_DOS_RO_PARTITION		= 0xe3, /* DOS R/O or SpeedStor */
	MBR_SPEEDSTOR_EXTENDED_PARTITION = 0xe4, /* SpeedStor 16-bit FAT extended partition < 1024 cyl. */
	MBR_RUFUS_EXTRA_PARTITION	= 0xea, /* Rufus extra partition for alignment */
	MBR_BEOS_FS_PARTITION		= 0xeb,
	MBR_GPT_PARTITION		= 0xee, /* Intel EFI GUID Partition Table */
	MBR_EFI_SYSTEM_PARTITION	= 0xef, /* Intel EFI System Partition */
	MBR_LINUX_PARISC_BOOT_PARTITION	= 0xf0, /* Linux/PA-RISC boot loader */
	MBR_SPEEDSTOR1_PARTITION	= 0xf1,
	MBR_SPEEDSTOR2_PARTITION	= 0xf4, /* SpeedStor large partition */
	MBR_DOS_SECONDARY_PARTITION	= 0xf2, /* DOS 3.3+ secondary */
	MBR_VMWARE_VMFS_PARTITION	= 0xfb,
	MBR_VMWARE_VMKCORE_PARTITION	= 0xfc, /* VMware kernel dump partition */
	MBR_LINUX_RAID_PARTITION	= 0xfd, /* New (2.2.x) raid partition with autodetect using persistent superblock */
	MBR_LANSTEP_PARTITION		= 0xfe, /* SpeedStor >1024 cyl. or LANstep */
	MBR_XENIX_BBT_PARTITION		= 0xff, /* Xenix Bad Block Table */
};

#endif /* UTIL_LINUX_PT_MBR_H */
Commit	Line	Data
7e5f8f38 KZ	1	#ifndef UTIL_LINUX_PT_MBR_H
	2	#define UTIL_LINUX_PT_MBR_H
	3
fdf8e1f5 SK	4	#include <assert.h>
fdf8e1f5 SK	5
f917738e KZ	6	struct dos_partition {
	7	unsigned char boot_ind; /* 0x80 - active */
	8	unsigned char bh, bs, bc; /* begin CHS */
71ade4da	9	unsigned char sys_ind;
f917738e KZ	10	unsigned char eh, es, ec; /* end CHS */
	11	unsigned char start_sect[4];
	12	unsigned char nr_sects[4];
	13	} __attribute__((packed));
	14
	15	#define MBR_PT_OFFSET 0x1be
3457d90e	16	#define MBR_PT_BOOTBITS_SIZE 440
f917738e	17
e8bf93de KZ	18	static inline struct dos_partition mbr_get_partition(unsigned char mbr, int i)
	19	{
	20	return (struct dos_partition *)
	21	(mbr + MBR_PT_OFFSET + (i * sizeof(struct dos_partition)));
	22	}
	23
f917738e	24	/* assemble badly aligned little endian integer */
b44244cb	25	static inline unsigned int __dos_assemble_4le(const unsigned char *p)
f917738e KZ	26	{
	27	return p[0] \| (p[1] << 8) \| (p[2] << 16) \| (p[3] << 24);
	28	}
	29
b1981115 KZ	30	static inline void __dos_store_4le(unsigned char *p, unsigned int val)
b1981115 KZ	31	{
fdf8e1f5	32	assert(!(p == NULL));
b1981115 KZ	33	p[0] = (val & 0xff);
	34	p[1] = ((val >> 8) & 0xff);
	35	p[2] = ((val >> 16) & 0xff);
	36	p[3] = ((val >> 24) & 0xff);
	37	}
	38
b44244cb	39	static inline unsigned int dos_partition_get_start(struct dos_partition *p)
f917738e	40	{
b44244cb	41	return __dos_assemble_4le(&(p->start_sect[0]));
f917738e KZ	42	}
f917738e KZ	43
b44244cb	44	static inline void dos_partition_set_start(struct dos_partition *p, unsigned int n)
f917738e	45	{
b44244cb	46	__dos_store_4le(p->start_sect, n);
f917738e KZ	47	}
f917738e KZ	48
b44244cb KZ	49	static inline unsigned int dos_partition_get_size(struct dos_partition *p)
	50	{
	51	return __dos_assemble_4le(&(p->nr_sects[0]));
	52	}
	53
	54	static inline void dos_partition_set_size(struct dos_partition *p, unsigned int n)
	55	{
	56	__dos_store_4le(p->nr_sects, n);
	57	}
	58
	59	static inline int mbr_is_valid_magic(const unsigned char *mbr)
f917738e KZ	60	{
	61	return mbr[510] == 0x55 && mbr[511] == 0xaa ? 1 : 0;
	62	}
	63
b44244cb KZ	64	static inline void mbr_set_magic(unsigned char *b)
	65	{
	66	b[510] = 0x55;
	67	b[511] = 0xaa;
	68	}
	69
	70	static inline unsigned int mbr_get_id(const unsigned char *mbr)
	71	{
	72	return __dos_assemble_4le(&mbr[440]);
	73	}
	74
	75	static inline void mbr_set_id(unsigned char *b, unsigned int id)
f917738e	76	{
b44244cb	77	__dos_store_4le(&b[440], id);
f917738e KZ	78	}
f917738e KZ	79
7e5f8f38 KZ	80	enum {
	81	MBR_EMPTY_PARTITION = 0x00,
	82	MBR_FAT12_PARTITION = 0x01,
	83	MBR_XENIX_ROOT_PARTITION = 0x02,
	84	MBR_XENIX_USR_PARTITION = 0x03,
	85	MBR_FAT16_LESS32M_PARTITION = 0x04,
	86	MBR_DOS_EXTENDED_PARTITION = 0x05,
	87	MBR_FAT16_PARTITION = 0x06, /* DOS 16-bit >=32M */
	88	MBR_HPFS_NTFS_PARTITION = 0x07, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
	89	MBR_AIX_PARTITION = 0x08, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
	90	MBR_AIX_BOOTABLE_PARTITION = 0x09, /* AIX data or Coherent */
	91	MBR_OS2_BOOTMNGR_PARTITION = 0x0a, /* OS/2 Boot Manager */
	92	MBR_W95_FAT32_PARTITION = 0x0b,
	93	MBR_W95_FAT32_LBA_PARTITION = 0x0c, /* LBA really is `Extended Int 13h' */
	94	MBR_W95_FAT16_LBA_PARTITION = 0x0e,
	95	MBR_W95_EXTENDED_PARTITION = 0x0f,
	96	MBR_OPUS_PARTITION = 0x10,
	97	MBR_HIDDEN_FAT12_PARTITION = 0x11,
	98	MBR_COMPAQ_DIAGNOSTICS_PARTITION = 0x12,
	99	MBR_HIDDEN_FAT16_L32M_PARTITION = 0x14,
	100	MBR_HIDDEN_FAT16_PARTITION = 0x16,
	101	MBR_HIDDEN_HPFS_NTFS_PARTITION = 0x17,
	102	MBR_AST_SMARTSLEEP_PARTITION = 0x18,
	103	MBR_HIDDEN_W95_FAT32_PARTITION = 0x1b,
	104	MBR_HIDDEN_W95_FAT32LBA_PARTITION = 0x1c,
	105	MBR_HIDDEN_W95_FAT16LBA_PARTITION = 0x1e,
	106	MBR_NEC_DOS_PARTITION = 0x24,
	107	MBR_PLAN9_PARTITION = 0x39,
	108	MBR_PARTITIONMAGIC_PARTITION = 0x3c,
	109	MBR_VENIX80286_PARTITION = 0x40,
	110	MBR_PPC_PREP_BOOT_PARTITION = 0x41,
	111	MBR_SFS_PARTITION = 0x42,
	112	MBR_QNX_4X_PARTITION = 0x4d,
	113	MBR_QNX_4X_2ND_PARTITION = 0x4e,
	114	MBR_QNX_4X_3RD_PARTITION = 0x4f,
	115	MBR_DM_PARTITION = 0x50,
	116	MBR_DM6_AUX1_PARTITION = 0x51, /* (or Novell) */
	117	MBR_CPM_PARTITION = 0x52, /* CP/M or Microport SysV/AT */
	118	MBR_DM6_AUX3_PARTITION = 0x53,
	119	MBR_DM6_PARTITION = 0x54,
	120	MBR_EZ_DRIVE_PARTITION = 0x55,
	121	MBR_GOLDEN_BOW_PARTITION = 0x56,
	122	MBR_PRIAM_EDISK_PARTITION = 0x5c,
	123	MBR_SPEEDSTOR_PARTITION = 0x61,
	124	MBR_GNU_HURD_PARTITION = 0x63, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
	125	MBR_UNIXWARE_PARTITION = MBR_GNU_HURD_PARTITION,
	126	MBR_NETWARE_286_PARTITION = 0x64,
	127	MBR_NETWARE_386_PARTITION = 0x65,
	128	MBR_DISKSECURE_MULTIBOOT_PARTITION = 0x70,
	129	MBR_PC_IX_PARTITION = 0x75,
	130	MBR_OLD_MINIX_PARTITION = 0x80, /* Minix 1.4a and earlier */
	131	MBR_MINIX_PARTITION = 0x81, /* Minix 1.4b and later */
	132	MBR_LINUX_SWAP_PARTITION = 0x82,
	133	MBR_SOLARIS_X86_PARTITION = MBR_LINUX_SWAP_PARTITION,
	134	MBR_LINUX_DATA_PARTITION = 0x83,
3e9a2bbb JJ	135	MBR_OS2_HIDDEN_DRIVE_PARTITION = 0x84, /* also hibernation MS APM, Intel Rapid Start */
3e9a2bbb JJ	136	MBR_INTEL_HIBERNATION_PARTITION = MBR_OS2_HIDDEN_DRIVE_PARTITION,
7e5f8f38 KZ	137	MBR_LINUX_EXTENDED_PARTITION = 0x85,
	138	MBR_NTFS_VOL_SET1_PARTITION = 0x86,
	139	MBR_NTFS_VOL_SET2_PARTITION = 0x87,
	140	MBR_LINUX_PLAINTEXT_PARTITION = 0x88,
	141	MBR_LINUX_LVM_PARTITION = 0x8e,
	142	MBR_AMOEBA_PARTITION = 0x93,
	143	MBR_AMOEBA_BBT_PARTITION = 0x94, /* (bad block table) */
	144	MBR_BSD_OS_PARTITION = 0x9f, /* BSDI */
	145	MBR_THINKPAD_HIBERNATION_PARTITION = 0xa0,
	146	MBR_FREEBSD_PARTITION = 0xa5, /* various BSD flavours */
	147	MBR_OPENBSD_PARTITION = 0xa6,
	148	MBR_NEXTSTEP_PARTITION = 0xa7,
	149	MBR_DARWIN_UFS_PARTITION = 0xa8,
	150	MBR_NETBSD_PARTITION = 0xa9,
	151	MBR_DARWIN_BOOT_PARTITION = 0xab,
	152	MBR_HFS_HFS_PARTITION = 0xaf,
	153	MBR_BSDI_FS_PARTITION = 0xb7,
	154	MBR_BSDI_SWAP_PARTITION = 0xb8,
	155	MBR_BOOTWIZARD_HIDDEN_PARTITION = 0xbb,
25156ba1	156	MBR_ACRONIS_FAT32LBA_PARTITION = 0xbc, /* Acronis Secure Zone with ipl for loader F11.SYS */
7e5f8f38 KZ	157	MBR_SOLARIS_BOOT_PARTITION = 0xbe,
	158	MBR_SOLARIS_PARTITION = 0xbf,
	159	MBR_DRDOS_FAT12_PARTITION = 0xc1,
	160	MBR_DRDOS_FAT16_L32M_PARTITION = 0xc4,
	161	MBR_DRDOS_FAT16_PARTITION = 0xc6,
	162	MBR_SYRINX_PARTITION = 0xc7,
	163	MBR_NONFS_DATA_PARTITION = 0xda,
	164	MBR_CPM_CTOS_PARTITION = 0xdb, /* CP/M or Concurrent CP/M or Concurrent DOS or CTOS */
	165	MBR_DELL_UTILITY_PARTITION = 0xde, /* Dell PowerEdge Server utilities */
	166	MBR_BOOTIT_PARTITION = 0xdf, /* BootIt EMBRM */
	167	MBR_DOS_ACCESS_PARTITION = 0xe1, /* DOS access or SpeedStor 12-bit FAT extended partition */
	168	MBR_DOS_RO_PARTITION = 0xe3, /* DOS R/O or SpeedStor */
	169	MBR_SPEEDSTOR_EXTENDED_PARTITION = 0xe4, /* SpeedStor 16-bit FAT extended partition < 1024 cyl. */
b12b07e3	170	MBR_RUFUS_EXTRA_PARTITION = 0xea, /* Rufus extra partition for alignment */
7e5f8f38 KZ	171	MBR_BEOS_FS_PARTITION = 0xeb,
	172	MBR_GPT_PARTITION = 0xee, /* Intel EFI GUID Partition Table */
	173	MBR_EFI_SYSTEM_PARTITION = 0xef, /* Intel EFI System Partition */
	174	MBR_LINUX_PARISC_BOOT_PARTITION = 0xf0, /* Linux/PA-RISC boot loader */
	175	MBR_SPEEDSTOR1_PARTITION = 0xf1,
	176	MBR_SPEEDSTOR2_PARTITION = 0xf4, /* SpeedStor large partition */
	177	MBR_DOS_SECONDARY_PARTITION = 0xf2, /* DOS 3.3+ secondary */
	178	MBR_VMWARE_VMFS_PARTITION = 0xfb,
	179	MBR_VMWARE_VMKCORE_PARTITION = 0xfc, /* VMware kernel dump partition */
	180	MBR_LINUX_RAID_PARTITION = 0xfd, /* New (2.2.x) raid partition with autodetect using persistent superblock */
	181	MBR_LANSTEP_PARTITION = 0xfe, /* SpeedStor >1024 cyl. or LANstep */
	182	MBR_XENIX_BBT_PARTITION = 0xff, /* Xenix Bad Block Table */
	183	};
	184
	185	#endif /* UTIL_LINUX_PT_MBR_H */