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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2019 Facebook */
   3
   4 #include <stdbool.h>
   5 #include <linux/bpf.h>
   6 #include <bpf/bpf_helpers.h>
   7
   8 struct s {
   9         int a;
  10         long long b;
  11 } __attribute__((packed));
  12
  13 int in1 = 0;
  14 long long in2 = 0;
  15 char in3 = '\0';
  16 long long in4 __attribute__((aligned(64))) = 0;
  17 struct s in5 = {};
  18
  19 long long out2 = 0;
  20 char out3 = 0;
  21 long long out4 = 0;
  22 int out1 = 0;
  23
  24 extern bool CONFIG_BPF_SYSCALL __kconfig;
  25 extern int LINUX_KERNEL_VERSION __kconfig;
  26 bool bpf_syscall = 0;
  27 int kern_ver = 0;
  28
  29 SEC("raw_tp/sys_enter")
  30 int handler(const void *ctx)
  31 {
  32         static volatile struct s out5;
  33
  34         out1 = in1;
  35         out2 = in2;
  36         out3 = in3;
  37         out4 = in4;
  38         out5 = in5;
  39
  40         bpf_syscall = CONFIG_BPF_SYSCALL;
  41         kern_ver = LINUX_KERNEL_VERSION;
  42
  43         return 0;
  44 }
  45
  46 char _license[] SEC("license") = "GPL";