linux-stable/tools/testing/selftests/bpf/prog_tests/fexit_test.c

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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
#include <test_progs.h>
#include "fexit_test.skel.h"
static int fexit_test(struct fexit_test *fexit_skel)
{
int err, prog_fd, i;
__u32 duration = 0, retval;
struct bpf_link *link;
__u64 *result;
err = fexit_test__attach(fexit_skel);
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);
ASSERT_OK(err, "test_run");
ASSERT_EQ(retval, 0, "test_run");
result = (__u64 *)fexit_skel->bss;
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);
}