func lockedOpenFile(path string, flag int, perm os.FileMode, lockType int) (*LockedFile, error) {
	switch flag {
	case syscall.O_RDONLY:
		lockType |= syscall.LOCK_SH
	case syscall.O_WRONLY:
		fallthrough
	case syscall.O_RDWR:
		fallthrough
	case syscall.O_WRONLY | syscall.O_CREAT:
		fallthrough
	case syscall.O_RDWR | syscall.O_CREAT:
		lockType |= syscall.LOCK_EX
	default:
		return nil, &os.PathError{

func lockedOpenFile(path string, flag int, perm os.FileMode, rlockType int) (*LockedFile, error) {
	var lockType int16
	switch flag {
	case syscall.O_RDONLY:
		lockType = syscall.F_RDLCK
	case syscall.O_WRONLY:
		fallthrough
	case syscall.O_RDWR:
		fallthrough
	case syscall.O_WRONLY | syscall.O_CREAT:
		fallthrough
	case syscall.O_RDWR | syscall.O_CREAT:
		lockType = syscall.F_WRLCK
	default:
		return nil, &os.PathError{

	var lockType uint32 = lockFileFailImmediately | lockFileExclusiveLock
	if flag == syscall.O_RDONLY {
		// https://docs.microsoft.com/en-us/windows/desktop/api/fileapi/nf-fileapi-lockfileex
		//lint:ignore SA4016 Reasons
		lockType = lockFileFailImmediately // Set this to enable shared lock and fail immediately.
	}
	return lockedOpenFile(path, flag, perm, lockType)
}

			Locks: locksHeld,
		})
	}
	var exp madmin.LockEntries
	for _, lri := range lris {
		lockType := func(lri lockRequesterInfo) string {
			if lri.Writer {
				return "WRITE"
			}
			return "READ"
		}
		exp = append(exp, madmin.LockEntry{
			Resource:   lri.Name,
			Type:       lockType(lri),
			ServerList: owners,
			Owner:      lri.Owner,
			ID:         lri.UID,
			Quorum:     lri.Quorum,

		// quorum + 1 when tolerance is exactly half of the
		// total locker clients.
		if quorum == tolerance {
			quorum++
		}
	}

	log("lockBlocking %s/%s for %#v: lockType readLock(%t), additional opts: %#v, quorum: %d, tolerance: %d, lockClients: %d\n", id, source, dm.Names, isReadLock, opts, quorum, tolerance, len(restClnts))

	tolerance = len(restClnts) - quorum
	attempt := uint(0)