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| author | Yonghong Song <yhs@fb.com> | 2021-09-14 15:30:36 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-09-14 18:45:52 -0700 |
| commit | 71d29c2d47d112404fe23e31cf33f7cccde75a8c (patch) | |
| tree | 2fc32a603b9d22cdeda200670811b86b8862eff2 /tools/testing/selftests/bpf/prog_tests/btf_write.c | |
| parent | 5c07f2fec00361fb5e8cff8ba7fdede7b29f38bd (diff) | |
| download | lwn-71d29c2d47d112404fe23e31cf33f7cccde75a8c.tar.gz lwn-71d29c2d47d112404fe23e31cf33f7cccde75a8c.zip | |
selftests/bpf: Test libbpf API function btf__add_tag()
Add btf_write tests with btf__add_tag() function.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223036.247560-1-yhs@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/btf_write.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/btf_write.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c index 022c7d89d6f4..76548eecce2c 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_write.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c @@ -281,5 +281,26 @@ void test_btf_write() { "[17] DATASEC 'datasec1' size=12 vlen=1\n" "\ttype_id=1 offset=4 size=8", "raw_dump"); + /* TAG */ + id = btf__add_tag(btf, "tag1", 16, -1); + ASSERT_EQ(id, 18, "tag_id"); + t = btf__type_by_id(btf, 18); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value"); + ASSERT_EQ(btf_kind(t), BTF_KIND_TAG, "tag_kind"); + ASSERT_EQ(t->type, 16, "tag_type"); + ASSERT_EQ(btf_tag(t)->component_idx, -1, "tag_component_idx"); + ASSERT_STREQ(btf_type_raw_dump(btf, 18), + "[18] TAG 'tag1' type_id=16 component_idx=-1", "raw_dump"); + + id = btf__add_tag(btf, "tag2", 14, 1); + ASSERT_EQ(id, 19, "tag_id"); + t = btf__type_by_id(btf, 19); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag2", "tag_value"); + ASSERT_EQ(btf_kind(t), BTF_KIND_TAG, "tag_kind"); + ASSERT_EQ(t->type, 14, "tag_type"); + ASSERT_EQ(btf_tag(t)->component_idx, 1, "tag_component_idx"); + ASSERT_STREQ(btf_type_raw_dump(btf, 19), + "[19] TAG 'tag2' type_id=14 component_idx=1", "raw_dump"); + btf__free(btf); } |