kubernetes/vendor/golang.org/x/sys/unix/fdset.go

// Set adds fd to the set fds.
func (fds *FdSet) Set(fd int) { … }

// Clear removes fd from the set fds.
func (fds *FdSet) Clear(fd int) { … }

// IsSet returns whether fd is in the set fds.
func (fds *FdSet) IsSet(fd int) bool { … }

// Zero clears the set fds.
func (fds *FdSet) Zero() { … }