gid_uid 13 samples/bpf/sock_flags_kern.c __u64 gid_uid = bpf_get_current_uid_gid(); gid_uid 14 samples/bpf/sock_flags_kern.c __u32 uid = gid_uid & 0xffffffff; gid_uid 15 samples/bpf/sock_flags_kern.c __u32 gid = gid_uid >> 32;