pathname_concat
int pathname_concat(char *buf, int buf_sz, const char *path,
err = pathname_concat(buf, sizeof(buf), path, bpf_program__name(prog));
if (pathname_concat(buf, sizeof(buf), path, bpf_program__name(prog)))
err = pathname_concat(pinfile, sizeof(pinfile), pindir, name);
err = pathname_concat(buf, sizeof(buf), path, bpf_map__name(map));
err = pathname_concat(buf, sizeof(buf), path, bpf_map__name(map));
err = pathname_concat(buf, sizeof(buf), path, bpf_map__name(map));
err = pathname_concat(buf, sizeof(buf), path, prog->name);
if (pathname_concat(buf, sizeof(buf), path, prog->name))
err = pathname_concat(buf, sizeof(buf), path, prog->name);