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//go:build !windows
package chrootarchive // import "github.com/docker/docker/pkg/chrootarchive"
import (
"io"
"path/filepath"
"github.com/docker/docker/pkg/archive"
"github.com/moby/sys/userns"
)
// applyLayerHandler 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 applyLayerHandler(dest string, layer io.Reader, options *archive.TarOptions, decompress bool) (size int64, err error) {
if decompress {
decompressed, err := archive.DecompressStream(layer)
if err != nil {
return 0, err
}
defer decompressed.Close()
layer = decompressed
}
if options == nil {
options = &archive.TarOptions{}
}
if userns.RunningInUserNS() {
options.InUserNS = true
}
if options.ExcludePatterns == nil {
options.ExcludePatterns = []string{}
}
dest = filepath.Clean(dest)
return doUnpackLayer(dest, layer, options)
}
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