holes

Documentation

Overview

Package holes finds and pretty-prints holes & data sections of a file. Used by TestFileHoleCopy in the gocryptfs test suite.

Index

• Constants
• func Create(path string)
• func PrettyPrint(segments []Segment) (out string)
• func Verify(fd int, segments []Segment) (err error)
• type Segment
  • func Find(fd int) (segments []Segment, err error)
  • func (s Segment) String() string
• type SegmentType
  • func (s SegmentType) String() string
• type Whence
  • func (w Whence) String() string

Constants

const (
	SEEK_DATA = 3
	SEEK_HOLE = 4

	SegmentHole = SegmentType(100)
	SegmentData = SegmentType(101)
	SegmentEOF  = SegmentType(102)
)

Functions

func Create

func Create(path string)

Create a test file at `path` with random holes

func PrettyPrint

func PrettyPrint(segments []Segment) (out string)

PrettyPrint pretty-prints the Segments.

func Verify

func Verify(fd int, segments []Segment) (err error)

Verify the gives `segments` using a full bytewise file scan

Types

type Segment

type Segment struct {
	Offset int64
	Type   SegmentType
}

func Find

func Find(fd int) (segments []Segment, err error)

Find examines the file passed via file descriptor and returns the found holes and data sections.

func (Segment) String

func (s Segment) String() string

type SegmentType

type SegmentType int

func (SegmentType) String

func (s SegmentType) String() string

type Whence

type Whence int

func (Whence) String

func (w Whence) String() string