// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2019 Facebook */ #include <stdbool.h> #include <linux/bpf.h> #include <bpf/bpf_helpers.h> struct s { int a; long long b; } __attribute__((packed)); /* .data section */ int in1 = -1; long long in2 = -1; /* .bss section */ char in3 = '\0'; long long in4 __attribute__((aligned(64))) = 0; struct s in5 = {}; /* .rodata section */ const volatile int in6 = 0; /* .data section */ int out1 = -1; long long out2 = -1; /* .bss section */ char out3 = 0; long long out4 = 0; int out6 = 0; extern bool CONFIG_BPF_SYSCALL __kconfig; extern int LINUX_KERNEL_VERSION __kconfig; bool bpf_syscall = 0; int kern_ver = 0; SEC("raw_tp/sys_enter") int handler(const void *ctx) { static volatile struct s out5; out1 = in1; out2 = in2; out3 = in3; out4 = in4; out5 = in5; out6 = in6; bpf_syscall = CONFIG_BPF_SYSCALL; kern_ver = LINUX_KERNEL_VERSION; return 0; } char _license[] SEC("license") = "GPL";