package log
import (
"os"
"runtime"
"syscall"
)
var stdErrFileHandler *os.File
func dupWrite(file *os.File) error {
stdErrFileHandler = file
if err := syscall.Dup3(int(file.Fd()), int(os.Stderr.Fd()), 0); err != nil {
return err
}
runtime.SetFinalizer(stdErrFileHandler, func(fd *os.File) {
fd.Close()
})
return nil