parental relationship between user namespaces; see ioctl_nsfs (2). A task that changes ... owner of the namespace; see ioctl_nsfs (2). Effect of capabilities within a user namespac…namespaces. These operations are described in ioctl_nsfs (2). Creation of new namespaces using clone ... readlink (1), unshare (1), clone (2), ioctl_nsfs (2), setns (2), unshare (2…parental relationship between PID namespaces; see ioctl_nsfs (2). setns(2) and unshare(2) semantics