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Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/btf_write.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/btf_write.c21
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);
}