ioctl_nsfs(2) System Calls Manual ioctl_nsfs(2) NAME ioctl_nsfs - ioctl() operations for Linux namespaces SYNOPSIS #include /* Definition of NS_* constants */ #include int ioctl(int fd, unsigned long op, ...); DESCRIPTION Discovering namespace relationships NS_GET_USERNS(2const) NS_GET_PARENT(2const) Discovering the namespace type NS_GET_NSTYPE(2const) Discovering the owner of a user namespace NS_GET_OWNER_UID(2const) ERRORS ENOTTY fd does not refer to a /proc/pid/ns/* file. STANDARDS Linux. SEE ALSO ioctl(2), fstat(2), proc(5), namespaces(7) Linux man-pages 6.9.1 2024-06-14 ioctl_nsfs(2)