archive

Documentation

Index

• Constants
• func Decompress(src io.Reader, dst string, options Options) (int64, error)
• func GzipCompress(in io.Reader) (io.ReadCloser, chan struct{})
• func Lgetxattr(path string, attr string) ([]byte, error)
• func Lsetxattr(path string, attr string, data []byte, flags int) error
• func TarWithRootDir(paths ...string) (readCloser io.ReadCloser, err error)
• func TarWithoutRootDir(paths ...string) (readCloser io.ReadCloser, err error)
• func Untar(src io.Reader, dst string) (int64, error)
• type Options

Constants

const (
	// WhiteoutPrefix means this file is a whiteout(deleted at the merge layer)
	WhiteoutPrefix = ".wh."

	// WhiteoutMetaPrefix prefix means whiteout has a special meaning and is not
	// for removing an actual file. Normally these files are excluded from exported
	// archives.
	WhiteoutMetaPrefix = WhiteoutPrefix + WhiteoutPrefix

	// WhiteoutLinkDir is a directory AUFS uses for storing hardlink links to other
	// layers. Normally these should not go into exported archives and all changed
	// hardlinks should be copied to the top layer.
	WhiteoutLinkDir = WhiteoutMetaPrefix + "plnk"

	// WhiteoutOpaqueDir file means directory has been made opaque - meaning
	// readdir calls to this directory do not follow to lower layers.
	WhiteoutOpaqueDir = WhiteoutMetaPrefix + ".opq"
)

Functions

func Decompress

func Decompress(src io.Reader, dst string, options Options) (int64, error)

Decompress this will not change the metadata of original files

func GzipCompress

func GzipCompress(in io.Reader) (io.ReadCloser, chan struct{})

GzipCompress make the tar stream to be gzip stream.

func Lgetxattr

func Lgetxattr(path string, attr string) ([]byte, error)

Lgetxattr retrieves the value of the extended attribute identified by attr and associated with the given path in the file system. It will return a nil slice and nil error if the xattr is not set.

func Lsetxattr

func Lsetxattr(path string, attr string, data []byte, flags int) error

Lsetxattr sets the value of the extended attribute identified by attr and associated with the given path in the file system.

func TarWithRootDir

func TarWithRootDir(paths ...string) (readCloser io.ReadCloser, err error)

TarWithRootDir src is the dir or single file to tar not contain the dir newFolder is a folder for tar file

func TarWithoutRootDir

func TarWithoutRootDir(paths ...string) (readCloser io.ReadCloser, err error)

TarWithoutRootDir function will tar files, but without keeping the original dir this is useful when we tar files at the build stage

func Untar

func Untar(src io.Reader, dst string) (int64, error)

Types

type Options

type Options struct {
	Compress    bool
	KeepRootDir bool
	ToStream    bool
}