package backuptar

import "github.com/Microsoft/go-winio/backuptar"

Index ¶

• func BasicInfoHeader(name string, size int64, fileInfo *winio.FileBasicInfo) *tar.Header
• func EncodeReparsePointFromTarHeader(hdr *tar.Header) []byte
• func ExtendedAttributesFromTarHeader(hdr *tar.Header) ([]byte, error)
• func FileInfoFromHeader(hdr *tar.Header) (name string, size int64, fileInfo *winio.FileBasicInfo, err error)
• func SecurityDescriptorFromTarHeader(hdr *tar.Header) ([]byte, error)
• func WriteBackupStreamFromTarFile(w io.Writer, t *tar.Reader, hdr *tar.Header) (*tar.Header, error)
• func WriteTarFileFromBackupStream(t *tar.Writer, r io.Reader, name string, size int64, fileInfo *winio.FileBasicInfo) error

Functions ¶

func BasicInfoHeader ¶

func BasicInfoHeader(name string, size int64, fileInfo *winio.FileBasicInfo) *tar.Header

BasicInfoHeader creates a tar header from basic file information.

func EncodeReparsePointFromTarHeader ¶

func EncodeReparsePointFromTarHeader(hdr *tar.Header) []byte

EncodeReparsePointFromTarHeader reads the ReparsePoint structure from the tar header and encodes it into a byte slice. The file for which this function is called must be a symlink.

func ExtendedAttributesFromTarHeader ¶

func ExtendedAttributesFromTarHeader(hdr *tar.Header) ([]byte, error)

ExtendedAttributesFromTarHeader reads the EAs associated with the header of the current file from the tar header and returns it as a byte slice.

func FileInfoFromHeader ¶

func FileInfoFromHeader(hdr *tar.Header) (name string, size int64, fileInfo *winio.FileBasicInfo, err error)

FileInfoFromHeader retrieves basic Win32 file information from a tar header, using the additional metadata written by WriteTarFileFromBackupStream.

func SecurityDescriptorFromTarHeader ¶

func SecurityDescriptorFromTarHeader(hdr *tar.Header) ([]byte, error)

SecurityDescriptorFromTarHeader reads the SDDL associated with the header of the current file from the tar header and returns the security descriptor into a byte slice.

func WriteBackupStreamFromTarFile ¶

func WriteBackupStreamFromTarFile(w io.Writer, t *tar.Reader, hdr *tar.Header) (*tar.Header, error)

WriteBackupStreamFromTarFile writes a Win32 backup stream from the current tar file. Since this function may process multiple tar file entries in order to collect all the alternate data streams for the file, it returns the next tar file that was not processed, or io.EOF is there are no more.

func WriteTarFileFromBackupStream ¶

func WriteTarFileFromBackupStream(t *tar.Writer, r io.Reader, name string, size int64, fileInfo *winio.FileBasicInfo) error

WriteTarFileFromBackupStream writes a file to a tar writer using data from a Win32 backup stream.

This encodes Win32 metadata as tar pax vendor extensions starting with MSWINDOWS.

The additional Win32 metadata is:

• MSWINDOWS.fileattr: The Win32 file attributes, as a decimal value
• MSWINDOWS.rawsd: The Win32 security descriptor, in raw binary format
• MSWINDOWS.mountpoint: If present, this is a mount point and not a symlink, even though the type is '2' (symlink)

Source Files ¶

doc.go strconv.go tar.go