1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* Copyright (c) 2019 Facebook */ 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #include <stdbool.h> 5*4882a593Smuzhiyun #include <linux/bpf.h> 6*4882a593Smuzhiyun #include <bpf/bpf_helpers.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun __u64 out__bpf_link_fops = -1; 9*4882a593Smuzhiyun __u64 out__bpf_link_fops1 = -1; 10*4882a593Smuzhiyun __u64 out__btf_size = -1; 11*4882a593Smuzhiyun __u64 out__per_cpu_start = -1; 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun extern const void bpf_link_fops __ksym; 14*4882a593Smuzhiyun extern const void __start_BTF __ksym; 15*4882a593Smuzhiyun extern const void __stop_BTF __ksym; 16*4882a593Smuzhiyun extern const void __per_cpu_start __ksym; 17*4882a593Smuzhiyun /* non-existing symbol, weak, default to zero */ 18*4882a593Smuzhiyun extern const void bpf_link_fops1 __ksym __weak; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun SEC("raw_tp/sys_enter") handler(const void * ctx)21*4882a593Smuzhiyunint handler(const void *ctx) 22*4882a593Smuzhiyun { 23*4882a593Smuzhiyun out__bpf_link_fops = (__u64)&bpf_link_fops; 24*4882a593Smuzhiyun out__btf_size = (__u64)(&__stop_BTF - &__start_BTF); 25*4882a593Smuzhiyun out__per_cpu_start = (__u64)&__per_cpu_start; 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun out__bpf_link_fops1 = (__u64)&bpf_link_fops1; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun return 0; 30*4882a593Smuzhiyun } 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun char _license[] SEC("license") = "GPL"; 33