const os.O_RDWR

3 uses

	os (current package)
		file.go#L77: 	O_RDWR   int = syscall.O_RDWR   // open the file read-write.
		file.go#L327: 	return OpenFile(name, O_RDWR|O_CREATE|O_TRUNC, 0666)
		tempfile.go#L44: 		f, err := OpenFile(name, O_RDWR|O_CREATE|O_EXCL, 0600)