83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
//go:build windows
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package archive
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import (
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"archive/tar"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"go.podman.io/storage/pkg/idtools"
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"go.podman.io/storage/pkg/longpath"
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)
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// fixVolumePathPrefix does platform specific processing to ensure that if
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// the path being passed in is not in a volume path format, convert it to one.
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func fixVolumePathPrefix(srcPath string) string {
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return longpath.AddPrefix(srcPath)
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}
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// getWalkRoot calculates the root path when performing a TarWithOptions.
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// We use a separate function as this is platform specific.
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func getWalkRoot(srcPath string, include string) string {
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return filepath.Join(srcPath, include)
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}
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// CanonicalTarNameForPath returns platform-specific filepath
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// to canonical posix-style path for tar archival. p is relative
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// path.
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func CanonicalTarNameForPath(p string) (string, error) {
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// windows: convert windows style relative path with backslashes
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// into forward slashes. Since windows does not allow '/' or '\'
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// in file names, it is mostly safe to replace however we must
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// check just in case
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if strings.Contains(p, "/") {
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return "", fmt.Errorf("windows path contains forward slash: %s", p)
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}
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return strings.Replace(p, string(os.PathSeparator), "/", -1), nil
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}
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// chmodTarEntry is used to adjust the file permissions used in tar header based
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// on the platform the archival is done.
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func chmodTarEntry(perm os.FileMode) os.FileMode {
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// perm &= 0755 // this 0-ed out tar flags (like link, regular file, directory marker etc.)
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permPart := perm & os.ModePerm
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noPermPart := perm &^ os.ModePerm
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// Add the x bit: make everything +x from windows
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permPart |= 0o111
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permPart &= 0o755
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return noPermPart | permPart
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}
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func setHeaderForSpecialDevice(hdr *tar.Header, name string, stat interface{}) {
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// do nothing. no notion of Rdev, Nlink in stat on Windows
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}
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func getInodeFromStat(stat interface{}) uint64 {
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// do nothing. no notion of Inode in stat on Windows
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return 0
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}
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// handleTarTypeBlockCharFifo is an OS-specific helper function used by
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// createTarFile to handle the following types of header: Block; Char; Fifo
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func handleTarTypeBlockCharFifo(hdr *tar.Header, path string) error {
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return nil
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}
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func handleLChmod(hdr *tar.Header, path string, hdrInfo os.FileInfo, forceMask *os.FileMode) error {
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return nil
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}
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func getFileUIDGID(stat interface{}) (idtools.IDPair, error) {
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// no notion of file ownership mapping yet on Windows
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return idtools.IDPair{0, 0}, nil
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}
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// Hardlink without following symlinks
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func handleLLink(targetPath string, path string) error {
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return os.Link(targetPath, path)
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}
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