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f99d7065a4
In preparation for converting the proto-layer getsockopt callbacks to the sockopt_t interface, switch udp_lib_getsockopt() to take a sockopt_t. The thin udp_getsockopt()/udpv6_getsockopt() wrappers keep their __user signature for now: they build a user-backed sockopt_t with sockopt_init_user(), call the helper, and write the returned length back to optlen. The helper uses copy_to_iter() instead of copy_to_user(). No functional change. Signed-off-by: Breno Leitao <leitao@debian.org> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Acked-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260630-getsockopt_phase2-v2-2-193335f3d4d1@debian.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>