1b7ddfab2SAndrii Nakryiko // SPDX-License-Identifier: GPL-2.0 2b7ddfab2SAndrii Nakryiko /* Copyright (c) 2019 Facebook */ 3b7ddfab2SAndrii Nakryiko 4b7ddfab2SAndrii Nakryiko #include <stdbool.h> 5b7ddfab2SAndrii Nakryiko #include <linux/bpf.h> 6b7ddfab2SAndrii Nakryiko #include <bpf/bpf_helpers.h> 7b7ddfab2SAndrii Nakryiko 8b7ddfab2SAndrii Nakryiko __u64 out__bpf_link_fops = -1; 9b7ddfab2SAndrii Nakryiko __u64 out__bpf_link_fops1 = -1; 10b7ddfab2SAndrii Nakryiko __u64 out__btf_size = -1; 11b7ddfab2SAndrii Nakryiko __u64 out__per_cpu_start = -1; 12b7ddfab2SAndrii Nakryiko 13b7ddfab2SAndrii Nakryiko extern const void bpf_link_fops __ksym; 14b7ddfab2SAndrii Nakryiko extern const void __start_BTF __ksym; 15b7ddfab2SAndrii Nakryiko extern const void __stop_BTF __ksym; 16b7ddfab2SAndrii Nakryiko extern const void __per_cpu_start __ksym; 17b7ddfab2SAndrii Nakryiko /* non-existing symbol, weak, default to zero */ 18b7ddfab2SAndrii Nakryiko extern const void bpf_link_fops1 __ksym __weak; 19b7ddfab2SAndrii Nakryiko 20b7ddfab2SAndrii Nakryiko SEC("raw_tp/sys_enter") handler(const void * ctx)21b7ddfab2SAndrii Nakryikoint handler(const void *ctx) 22b7ddfab2SAndrii Nakryiko { 23b7ddfab2SAndrii Nakryiko out__bpf_link_fops = (__u64)&bpf_link_fops; 24b7ddfab2SAndrii Nakryiko out__btf_size = (__u64)(&__stop_BTF - &__start_BTF); 25b7ddfab2SAndrii Nakryiko out__per_cpu_start = (__u64)&__per_cpu_start; 26b7ddfab2SAndrii Nakryiko 27b7ddfab2SAndrii Nakryiko out__bpf_link_fops1 = (__u64)&bpf_link_fops1; 28b7ddfab2SAndrii Nakryiko 29b7ddfab2SAndrii Nakryiko return 0; 30b7ddfab2SAndrii Nakryiko } 31b7ddfab2SAndrii Nakryiko 32b7ddfab2SAndrii Nakryiko char _license[] SEC("license") = "GPL"; 33