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d39887f55d
Add a single kselftest covering the proto_ops getsockopt_iter conversions for AF_NETLINK and AF_VSOCK, using one fixture per protocol: netlink: NETLINK_PKTINFO covers the flag-style int path (exact size, oversize clamp, undersize -EINVAL); NETLINK_LIST_MEMBERSHIPS covers the size-discovery path that always reports the required buffer length back via optlen, even when the user buffer is too small to receive any group bits. vsock: SO_VM_SOCKETS_BUFFER_SIZE covers the u64 path (exact size, oversize clamp, undersize -EINVAL). Each fixture also exercises an unknown optname and a bogus level so the returned-length / errno semantics preserved by the sockopt_t conversion are pinned down. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260501-getsock_one-v1-3-810ce23ea70e@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>