BpfProg.load fails

[andrewbolotsky]

When I try to call

BpfProg.load("...", ProgType.PERF_EVENT);

it fails with

libbpf: bpf_prog_load_opts has non-zero extra bytes
Exception in thread "main" java.io.IOException: Invalid argument
        at one.nio.os.bpf.Bpf.progLoad(Native Method)
        at one.nio.os.bpf.BpfProg.load(BpfProg.java:32)
        at org.example.BpfRunner.main(BpfRunner.java:14)

As far as I understand, in implementation utilized

int (*bpf_prog_load)(const char *file, enum bpf_prog_type type,
                     struct bpf_object **pobj, int *prog_fd);

but as i see here this method now has another signature

int bpf_prog_load (enum bpf_prog_type prog_type, const char *prog_name, const char *license, const struct bpf_insn *insns, size_t insn_cnt, struct bpf_prog_load_opts *opts)

[blonded04]

it seems to me you're using a newer version of libbpf than the one that one-nio supports. libbpf has changed bpf_prog_load signature somewhere around libbpf 1.0. currently you can use an older version of libbpf to have bpf_prog_load compatible with one-nio JNI bpf_prog_load signature