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selftests/bpf: Clean up btf and btf_dump in dump_datasec test

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Free up used resources at the end and on error. Also make it more
obvious that there is btf__parse() call that creates struct btf
instance.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Hengqi Chen <hengqi.chen@gmail.com>
Link: https://lore.kernel.org/bpf/20211107165521.9240-7-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-11-07 08:55:18 -08:00 • committed by Alexei Starovoitov
parent 5309b516bc
commit f79587520a
1 changed files with 6 additions and 2 deletions
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8
tools/testing/selftests/bpf/prog_tests/btf_dump.c
View file

@ -814,21 +814,25 @@ static void test_btf_datasec(struct btf *btf, struct btf_dump *d, char *str,
static void test_btf_dump_datasec_data(char *str)
{
struct btf *btf = btf__parse("xdping_kern.o", NULL);
struct btf *btf;
struct btf_dump_opts opts = { .ctx = str };
char license[4] = "GPL";
struct btf_dump *d;
btf = btf__parse("xdping_kern.o", NULL);
if (!ASSERT_OK_PTR(btf, "xdping_kern.o BTF not found"))
return;
d = btf_dump__new(btf, NULL, &opts, btf_dump_snprintf);
if (!ASSERT_OK_PTR(d, "could not create BTF dump"))
return;
goto out;
test_btf_datasec(btf, d, str, "license",
"SEC(\"license\") char[4] _license = (char[4])['G','P','L',];",
license, sizeof(license));
out:
btf_dump__free(d);
btf__free(btf);
}
void test_btf_dump() {