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package archive // import "github.com/docker/docker/pkg/archive"
import (
"archive/tar"
"os"
"path/filepath"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/longpath"
)
// fixVolumePathPrefix does platform specific processing to ensure that if
// the path being passed in is not in a volume path format, convert it to one.
func fixVolumePathPrefix(srcPath string) string {
return longpath.AddPrefix(srcPath)
}
// getWalkRoot calculates the root path when performing a TarWithOptions.
// We use a separate function as this is platform specific.
func getWalkRoot(srcPath string, include string) string {
return filepath.Join(srcPath, include)
}
// chmodTarEntry is used to adjust the file permissions used in tar header based
// on the platform the archival is done.
func chmodTarEntry(perm os.FileMode) os.FileMode {
// Remove group- and world-writable bits.
perm &= 0o755
// Add the x bit: make everything +x on Windows
return perm | 0o111
}
func setHeaderForSpecialDevice(hdr *tar.Header, name string, stat interface{}) (err error) {
// do nothing. no notion of Rdev, Nlink in stat on Windows
return
}
func getInodeFromStat(stat interface{}) (inode uint64, err error) {
// do nothing. no notion of Inode in stat on Windows
return
}
// handleTarTypeBlockCharFifo is an OS-specific helper function used by
// createTarFile to handle the following types of header: Block; Char; Fifo
func handleTarTypeBlockCharFifo(hdr *tar.Header, path string) error {
return nil
}
func handleLChmod(hdr *tar.Header, path string, hdrInfo os.FileInfo) error {
return nil
}
func getFileUIDGID(stat interface{}) (idtools.Identity, error) {
// no notion of file ownership mapping yet on Windows
return idtools.Identity{UID: 0, GID: 0}, nil
}
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