chrootarchive

func ApplyLayer ¶

func ApplyLayer(dest string, layer archive.ArchiveReader) (size int64, err error)

ApplyLayer parses a diff in the standard layer format from `layer`, and applies it to the directory `dest`. Returns the size in bytes of the contents of the layer.

func CopyFileWithTar ¶

func CopyFileWithTar(src, dst string) (err error)

CopyFileWithTar emulates the behavior of the 'cp' command-line for a single file. It copies a regular file from path `src` to path `dst`, and preserves all its metadata.

If `dst` ends with a trailing slash '/' ('\' on Windows), the final destination path will be `dst/base(src)` or `dst\base(src)`

func CopyWithTar ¶

func CopyWithTar(src, dst string) error

CopyWithTar creates a tar archive of filesystem path `src`, and unpacks it at filesystem path `dst`. The archive is streamed directly with fixed buffering and no intermediary disk IO.

func TarUntar ¶

func TarUntar(src, dst string) error

TarUntar is a convenience function which calls Tar and Untar, with the output of one piped into the other. If either Tar or Untar fails, TarUntar aborts and returns the error.

func Untar ¶

func Untar(tarArchive io.Reader, dest string, options *archive.TarOptions) error

Untar reads a stream of bytes from `archive`, parses it as a tar archive, and unpacks it into the directory at `dest`. The archive may be compressed with one of the following algorithms:

identity (uncompressed), gzip, bzip2, xz.

func UntarPath ¶

func UntarPath(src, dst string) error

UntarPath is a convenience function which looks for an archive at filesystem path `src`, and unpacks it at `dst`.