1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2019 Facebook */
 3#include <test_progs.h>
 4#include "fentry_test.lskel.h"
 5
 6static int fentry_test(struct fentry_test *fentry_skel)
 7{
 8	int err, prog_fd, i;
 9	__u32 duration = 0, retval;
10	int link_fd;
11	__u64 *result;
12
13	err = fentry_test__attach(fentry_skel);
14	if (!ASSERT_OK(err, "fentry_attach"))
15		return err;
16
17	/* Check that already linked program can't be attached again. */
18	link_fd = fentry_test__test1__attach(fentry_skel);
19	if (!ASSERT_LT(link_fd, 0, "fentry_attach_link"))
20		return -1;
21
22	prog_fd = fentry_skel->progs.test1.prog_fd;
23	err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
24				NULL, NULL, &retval, &duration);
25	ASSERT_OK(err, "test_run");
26	ASSERT_EQ(retval, 0, "test_run");
27
28	result = (__u64 *)fentry_skel->bss;
29	for (i = 0; i < sizeof(*fentry_skel->bss) / sizeof(__u64); i++) {
30		if (!ASSERT_EQ(result[i], 1, "fentry_result"))
31			return -1;
32	}
33
34	fentry_test__detach(fentry_skel);
35
36	/* zero results for re-attach test */
37	memset(fentry_skel->bss, 0, sizeof(*fentry_skel->bss));
38	return 0;
39}
40
41void test_fentry_test(void)
42{
43	struct fentry_test *fentry_skel = NULL;
44	int err;
45
46	fentry_skel = fentry_test__open_and_load();
47	if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load"))
48		goto cleanup;
49
50	err = fentry_test(fentry_skel);
51	if (!ASSERT_OK(err, "fentry_first_attach"))
52		goto cleanup;
53
54	err = fentry_test(fentry_skel);
55	ASSERT_OK(err, "fentry_second_attach");
56
57cleanup:
58	fentry_test__destroy(fentry_skel);
59}