構造体定義書 - bsd

構文

struct bsd_disklabel

ファイル名

構造体情報

No.	名称	属性	説明
1	bsd_disklabel
	d_magic	uint32_t	the magic number
	d_type	int16_t	drive type
	d_subtype	int16_t	controller/d_type specific
	d_typename[16]	char	type name, e.g. "eagle"
	d_packname[16]	char	pack identifier
	d_secsize	uint32_t	# of bytes per sector
	d_nsectors	uint32_t	# of data sectors per track
	d_ntracks	uint32_t	# of tracks per cylinder
	d_ncylinders	uint32_t	# of data cylinders per unit
	d_secpercyl	uint32_t	# of data sectors per cylinder
	d_secperunit	uint32_t	# of data sectors per unit
	d_sparespertrack	uint16_t	# of spare sectors per track
	d_sparespercyl	uint16_t	# of spare sectors per cylinder
	d_acylinders	uint32_t	# of alt. cylinders per unit
	d_rpm	uint16_t	rotational speed
	d_interleave	uint16_t	hardware sector interleave
	d_trackskew	uint16_t	sector 0 skew, per track
	d_cylskew	uint16_t	sector 0 skew, per cylinder
	d_headswitch	uint32_t	head switch time, usec
	d_trkseek	uint32_t	track-to-track seek, usec
	d_flags	uint32_t	generic flags
	d_drivedata[5]	uint32_t	drive-type specific information
	d_spare[5]	uint32_t	reserved for future use
	d_magic2	uint32_t	the magic number (again)
	d_checksum	uint16_t	xor of data incl. partitions
	d_npartitions	uint16_t	number of partitions in following
	d_bbsize	uint32_t	size of boot area at sn0, bytes
	d_sbsize	uint32_t	max size of fs superblock, bytes
	p_size	bsd_partition uint32_t	number of sectors in partition
	p_offset	uint32_t	starting sector
	p_fsize	uint32_t	filesystem basic fragment size
	p_fstype	uint8_t	filesystem type, see below
	p_frag	uint8_t	filesystem fragments per block
	p_cpg	uint16_t	filesystem cylinders per group
	d_partitions[BSD_MAXPARTITIONS]	} __attribute__((packed))	actually may be more

bsd_disklabel

構文

ファイル名

構造体情報

See Also