libbpf_sha256
libbpf_sha256(gen->data_start, gen->data_cur - gen->data_start, (__u8 *)sha);
libbpf_sha256(purged, prog->insns_cnt * sizeof(struct bpf_insn),
void libbpf_sha256(const void *data, size_t len, __u8 out[SHA256_DIGEST_LENGTH]);
libbpf_sha256(data, i, &digests[i * SHA256_DIGEST_LENGTH]);
libbpf_sha256(digests, (MAX_LEN + 1) * SHA256_DIGEST_LENGTH,