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[linux.git] / tools / testing / selftests / bpf / prog_tests / btf_module.c
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2021 Hengqi Chen */
3
4 #include <test_progs.h>
5 #include <bpf/btf.h>
6
7 static const char *module_name = "bpf_testmod";
8 static const char *symbol_name = "bpf_testmod_test_read";
9
10 void test_btf_module()
11 {
12         struct btf *vmlinux_btf, *module_btf;
13         __s32 type_id;
14
15         if (!env.has_testmod) {
16                 test__skip();
17                 return;
18         }
19
20         vmlinux_btf = btf__load_vmlinux_btf();
21         if (!ASSERT_OK_PTR(vmlinux_btf, "could not load vmlinux BTF"))
22                 return;
23
24         module_btf = btf__load_module_btf(module_name, vmlinux_btf);
25         if (!ASSERT_OK_PTR(module_btf, "could not load module BTF"))
26                 goto cleanup;
27
28         type_id = btf__find_by_name(module_btf, symbol_name);
29         ASSERT_GT(type_id, 0, "func not found");
30
31 cleanup:
32         btf__free(module_btf);
33         btf__free(vmlinux_btf);
34 }
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