diff --git a/src/libbpf.c b/src/libbpf.c index 4a30a78..273c2c7 100644 --- a/src/libbpf.c +++ b/src/libbpf.c @@ -10346,19 +10346,24 @@ static int perf_event_open_probe(bool uprobe, bool retprobe, const char *name, return pfd; } -struct bpf_link *bpf_program__attach_kprobe(struct bpf_program *prog, - bool retprobe, - const char *func_name) +struct bpf_program_attach_kprobe_opts { + bool retprobe; +}; + +static struct bpf_link* +bpf_program__attach_kprobe_opts(struct bpf_program *prog, + const char *func_name, + struct bpf_program_attach_kprobe_opts *opts) { char errmsg[STRERR_BUFSIZE]; struct bpf_link *link; int pfd, err; - pfd = perf_event_open_probe(false /* uprobe */, retprobe, func_name, + pfd = perf_event_open_probe(false /* uprobe */, opts->retprobe, func_name, 0 /* offset */, -1 /* pid */); if (pfd < 0) { pr_warn("prog '%s': failed to create %s '%s' perf event: %s\n", - prog->name, retprobe ? "kretprobe" : "kprobe", func_name, + prog->name, opts->retprobe ? "kretprobe" : "kprobe", func_name, libbpf_strerror_r(pfd, errmsg, sizeof(errmsg))); return libbpf_err_ptr(pfd); } @@ -10367,23 +10372,34 @@ struct bpf_link *bpf_program__attach_kprobe(struct bpf_program *prog, if (err) { close(pfd); pr_warn("prog '%s': failed to attach to %s '%s': %s\n", - prog->name, retprobe ? "kretprobe" : "kprobe", func_name, + prog->name, opts->retprobe ? "kretprobe" : "kprobe", func_name, libbpf_strerror_r(err, errmsg, sizeof(errmsg))); return libbpf_err_ptr(err); } return link; } +struct bpf_link *bpf_program__attach_kprobe(struct bpf_program *prog, + bool retprobe, + const char *func_name) +{ + struct bpf_program_attach_kprobe_opts opts = { + .retprobe = retprobe, + }; + + return bpf_program__attach_kprobe_opts(prog, func_name, &opts); +} + static struct bpf_link *attach_kprobe(const struct bpf_sec_def *sec, struct bpf_program *prog) { + struct bpf_program_attach_kprobe_opts opts; const char *func_name; - bool retprobe; func_name = prog->sec_name + sec->len; - retprobe = strcmp(sec->sec, "kretprobe/") == 0; + opts.retprobe = strcmp(sec->sec, "kretprobe/") == 0; - return bpf_program__attach_kprobe(prog, retprobe, func_name); + return bpf_program__attach_kprobe_opts(prog, func_name, &opts); } struct bpf_link *bpf_program__attach_uprobe(struct bpf_program *prog,