tools/testing/selftests/bpf/progs/test_attach_probe.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2017 Facebook
   3
   4 #include <linux/ptrace.h>
   5 #include <linux/bpf.h>
   6 #include <bpf/bpf_helpers.h>
   7 #include <bpf/bpf_tracing.h>
   8
   9 int kprobe_res = 0;
  10 int kretprobe_res = 0;
  11 int uprobe_res = 0;
  12 int uretprobe_res = 0;
  13
  14 SEC("kprobe/sys_nanosleep")
  15 int handle_kprobe(struct pt_regs *ctx)
  16 {
  17         kprobe_res = 1;
  18         return 0;
  19 }
  20
  21 SEC("kretprobe/sys_nanosleep")
  22 int BPF_KRETPROBE(handle_kretprobe)
  23 {
  24         kretprobe_res = 2;
  25         return 0;
  26 }
  27
  28 SEC("uprobe/trigger_func")
  29 int handle_uprobe(struct pt_regs *ctx)
  30 {
  31         uprobe_res = 3;
  32         return 0;
  33 }
  34
  35 SEC("uretprobe/trigger_func")
  36 int handle_uretprobe(struct pt_regs *ctx)
  37 {
  38         uretprobe_res = 4;
  39         return 0;
  40 }
  41
  42 char _license[] SEC("license") = "GPL";