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//go:build aix || android || darwin || dragonfly || freebsd || hurd || illumos || linux || netbsd || openbsd || solaris
// +build aix android darwin dragonfly freebsd hurd illumos linux netbsd openbsd solaris
package archives
import (
"archive/zip"
"bytes"
"encoding/binary"
"errors"
"io"
"os"
"syscall"
)
func createZipUIDGidField(w io.Writer, fi os.FileInfo) (err error) {
stat, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return
}
ugField := ZipUIDGidField{
1,
4, stat.Uid,
4, stat.Gid,
}
ugFieldType := ZipExtraField{
Type: ZipUIDGidFieldType,
Size: uint16(binary.Size(&ugField)),
}
err = binary.Write(w, binary.LittleEndian, &ugFieldType)
if err == nil {
err = binary.Write(w, binary.LittleEndian, &ugField)
}
return err
}
func processZipUIDGidField(data []byte, file *zip.FileHeader) error {
var ugField ZipUIDGidField
err := binary.Read(bytes.NewReader(data), binary.LittleEndian, &ugField)
if err != nil {
return err
}
if !(ugField.Version == 1 && ugField.UIDSize == 4 && ugField.GIDSize == 4) {
return errors.New("uid/gid data not supported")
}
return os.Lchown(file.Name, int(ugField.UID), int(ugField.Gid))
}
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