Commit 8caadc43 authored by Jiri Olsa's avatar Jiri Olsa Committed by Alexei Starovoitov

selftests/bpf: Add re-attach test to fexit_test

Adding the test to re-attach (detach/attach again) tracing
fexit programs, plus check that already linked program can't
be attached again.

Also switching to ASSERT* macros.
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210414195147.1624932-5-jolsa@kernel.org
parent 56dda5a4
......@@ -3,35 +3,57 @@
#include <test_progs.h>
#include "fexit_test.skel.h"
void test_fexit_test(void)
static int fexit_test(struct fexit_test *fexit_skel)
{
struct fexit_test *fexit_skel = NULL;
int err, prog_fd, i;
__u32 duration = 0, retval;
struct bpf_link *link;
__u64 *result;
fexit_skel = fexit_test__open_and_load();
if (CHECK(!fexit_skel, "fexit_skel_load", "fexit skeleton failed\n"))
goto cleanup;
err = fexit_test__attach(fexit_skel);
if (CHECK(err, "fexit_attach", "fexit attach failed: %d\n", err))
goto cleanup;
if (!ASSERT_OK(err, "fexit_attach"))
return err;
/* Check that already linked program can't be attached again. */
link = bpf_program__attach(fexit_skel->progs.test1);
if (!ASSERT_ERR_PTR(link, "fexit_attach_link"))
return -1;
prog_fd = bpf_program__fd(fexit_skel->progs.test1);
err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
NULL, NULL, &retval, &duration);
CHECK(err || retval, "test_run",
"err %d errno %d retval %d duration %d\n",
err, errno, retval, duration);
ASSERT_OK(err, "test_run");
ASSERT_EQ(retval, 0, "test_run");
result = (__u64 *)fexit_skel->bss;
for (i = 0; i < 6; i++) {
if (CHECK(result[i] != 1, "result",
"fexit_test%d failed err %lld\n", i + 1, result[i]))
goto cleanup;
for (i = 0; i < sizeof(*fexit_skel->bss) / sizeof(__u64); i++) {
if (!ASSERT_EQ(result[i], 1, "fexit_result"))
return -1;
}
fexit_test__detach(fexit_skel);
/* zero results for re-attach test */
memset(fexit_skel->bss, 0, sizeof(*fexit_skel->bss));
return 0;
}
void test_fexit_test(void)
{
struct fexit_test *fexit_skel = NULL;
int err;
fexit_skel = fexit_test__open_and_load();
if (!ASSERT_OK_PTR(fexit_skel, "fexit_skel_load"))
goto cleanup;
err = fexit_test(fexit_skel);
if (!ASSERT_OK(err, "fexit_first_attach"))
goto cleanup;
err = fexit_test(fexit_skel);
ASSERT_OK(err, "fexit_second_attach");
cleanup:
fexit_test__destroy(fexit_skel);
}
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