BPF_MAP_CAN_READ 463 include/linux/bpf.h return BPF_MAP_CAN_READ; BPF_MAP_CAN_READ 467 include/linux/bpf.h return BPF_MAP_CAN_READ | BPF_MAP_CAN_WRITE; BPF_MAP_CAN_READ 2160 kernel/bpf/verifier.c if (type == BPF_READ && !(cap & BPF_MAP_CAN_READ)) {