const os.O_EXCL

3 uses

	os (current package)
		dir.go#L183: 		w, err := OpenFile(newPath, O_CREATE|O_EXCL|O_WRONLY, 0666|info.Mode()&0777)
		file.go#L86: 	O_EXCL   int = syscall.O_EXCL   // used with O_CREATE, file must not exist.
		tempfile.go#L49: 		f, err := OpenFile(name, O_RDWR|O_CREATE|O_EXCL, 0600)