explicit warning when source won't be saved (iovisor#2267)

explicit warning when source won't be saved
drcwr · Mar 12, 2019 · ef14cfb · ef14cfb
1 parent ba41501
commit ef14cfb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/cc/api/BPF.cc b/src/cc/api/BPF.cc
@@ -560,8 +560,10 @@ StatusTuple BPF::load_func(const std::string& func_name, bpf_prog_type type,
  if (fd < 0)
  return StatusTuple(-1, "Failed to load %s: %d", func_name.c_str(), fd);
 
- bpf_module_->annotate_prog_tag(
+ int ret = bpf_module_->annotate_prog_tag(
  func_name, fd, reinterpret_cast<struct bpf_insn*>(func_start), func_size);
+ if (ret < 0)
+ fprintf(stderr, "WARNING: cannot get prog tag, ignore saving source with program tag\n");
  funcs_[func_name] = fd;
  return StatusTuple(0);
 }