| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ |
| #include <linux/bpf.h> |
| #include <linux/btf.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| |
| struct bpf_test_no_cfi_ops { |
| void (*fn_1)(void); |
| void (*fn_2)(void); |
| }; |
| |
| static int dummy_init(struct btf *btf) |
| { |
| return 0; |
| } |
| |
| static int dummy_init_member(const struct btf_type *t, |
| const struct btf_member *member, |
| void *kdata, const void *udata) |
| { |
| return 0; |
| } |
| |
| static int dummy_reg(void *kdata) |
| { |
| return 0; |
| } |
| |
| static void dummy_unreg(void *kdata) |
| { |
| } |
| |
| static const struct bpf_verifier_ops dummy_verifier_ops; |
| |
| static void bpf_test_no_cfi_ops__fn_1(void) |
| { |
| } |
| |
| static void bpf_test_no_cfi_ops__fn_2(void) |
| { |
| } |
| |
| static struct bpf_test_no_cfi_ops __test_no_cif_ops = { |
| .fn_1 = bpf_test_no_cfi_ops__fn_1, |
| .fn_2 = bpf_test_no_cfi_ops__fn_2, |
| }; |
| |
| static struct bpf_struct_ops test_no_cif_ops = { |
| .verifier_ops = &dummy_verifier_ops, |
| .init = dummy_init, |
| .init_member = dummy_init_member, |
| .reg = dummy_reg, |
| .unreg = dummy_unreg, |
| .name = "bpf_test_no_cfi_ops", |
| .owner = THIS_MODULE, |
| }; |
| |
| static int bpf_test_no_cfi_init(void) |
| { |
| int ret; |
| |
| ret = register_bpf_struct_ops(&test_no_cif_ops, |
| bpf_test_no_cfi_ops); |
| if (!ret) |
| return -EINVAL; |
| |
| test_no_cif_ops.cfi_stubs = &__test_no_cif_ops; |
| ret = register_bpf_struct_ops(&test_no_cif_ops, |
| bpf_test_no_cfi_ops); |
| return ret; |
| } |
| |
| static void bpf_test_no_cfi_exit(void) |
| { |
| } |
| |
| module_init(bpf_test_no_cfi_init); |
| module_exit(bpf_test_no_cfi_exit); |
| |
| MODULE_AUTHOR("Kuifeng Lee"); |
| MODULE_DESCRIPTION("BPF no cfi_stubs test module"); |
| MODULE_LICENSE("Dual BSD/GPL"); |
| |