mbr

package module

v0.0.0-...-2b19b9c Latest Latest Go to latest Published: Mar 25, 2019 License: MIT Imports: 2 Imported by: 8

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Repository

github.com/rekby/mbr

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Open Source Insights

README ¶

Library for work with MBR (Master boot record) record of disk.

Main purpose when create library - usage for direct resize partitions as https://github.com/amarao/ptmax
from golang without external dependency.

GoDoc: https://godoc.org/github.com/rekby/mbr

Documentation ¶

Index ¶

Constants
Variables
type MBR
- func Read(disk io.Reader) (*MBR, error)
type MBRPartition
type PartitionType

Constants ¶

View Source

const (
	PART_EMPTY              = PartitionType(0)
	PART_LINUX_SWAP_SOLARIS = PartitionType(0x82)
	PART_LVM                = PartitionType(0x8E)
	PART_HYBRID_GPT         = PartitionType(0xED)
	PART_GPT                = PartitionType(0xEE)
)

Variables ¶

View Source

var ErrorBadMbrSign = errors.New("MBR: Bad signature")

View Source

var ErrorPartitionBootFlag = errors.New("MBR: Bad value in boot flag")

View Source

var ErrorPartitionLastSectorHigh = errors.New("MBR: Last sector have very high number")

View Source

var ErrorPartitionsIntersection = errors.New("MBR: Partitions have intersections")

Functions ¶

This section is empty.

Types ¶

type MBR ¶

type MBR struct {
	// contains filtered or unexported fields
}

func Read ¶

func Read(disk io.Reader) (*MBR, error)

Read MBR from disk. Example: f, _ := os.Open("/dev/sda") Mbr, err := mbr.Read(f) if err != nil ... f.Close()

func (*MBR) Check ¶

func (this *MBR) Check() error

func (*MBR) FixSignature ¶

func (this *MBR) FixSignature()

func (MBR) GetAllPartitions ¶

func (this MBR) GetAllPartitions() []*MBRPartition

func (MBR) GetPartition ¶

func (this MBR) GetPartition(num int) *MBRPartition

func (MBR) IsGPT ¶

func (this MBR) IsGPT() bool

func (MBR) Write ¶

func (this MBR) Write(disk io.Writer) error

Write MBR to disk Example: f, _ := os.OpenFile("/dev/sda", os.O_RDWR | os.O_SYNC, 0600) err := Mbr.Write(f) if err != nil ... f.Close()

type MBRPartition ¶

type MBRPartition struct {
	Num int
	// contains filtered or unexported fields
}

func (*MBRPartition) GetLBALast ¶

func (this *MBRPartition) GetLBALast() uint32

Return number of last setor if partition.

If last sector num more then max uint32 - panic. It mean error in metadata.

func (*MBRPartition) GetLBALen ¶

func (this *MBRPartition) GetLBALen() uint32

Return count of sectors in partition.

func (*MBRPartition) GetLBAStart ¶

func (this *MBRPartition) GetLBAStart() uint32

Return number of first sector of partition. Numbers starts from 1.

func (*MBRPartition) GetType ¶

func (this *MBRPartition) GetType() PartitionType

func (*MBRPartition) IsBootable ¶

func (this *MBRPartition) IsBootable() bool

Return true if this partition's bootable flag is set.

func (*MBRPartition) IsEmpty ¶

func (this *MBRPartition) IsEmpty() bool

Return true if partition have empty type

func (*MBRPartition) SetLBALen ¶

func (this *MBRPartition) SetLBALen(sectorCount uint32)

Set length of partition in sectors.

func (*MBRPartition) SetLBAStart ¶

func (this *MBRPartition) SetLBAStart(startSector uint32)

Set start sector of partition. Number of sector starts from 1. 0 - invalid value.

func (*MBRPartition) SetType ¶

func (this *MBRPartition) SetType(t PartitionType)

type PartitionType ¶

type PartitionType byte

Source Files ¶

View all Source files

mbr.go

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