1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2019 Facebook */
3 #include <test_progs.h>
4 #include "fentry_test.lskel.h"
5
fentry_test(struct fentry_test_lskel * fentry_skel)6 static int fentry_test(struct fentry_test_lskel *fentry_skel)
7 {
8 int err, prog_fd, i;
9 int link_fd;
10 __u64 *result;
11 LIBBPF_OPTS(bpf_test_run_opts, topts);
12
13 err = fentry_test_lskel__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_lskel__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_opts(prog_fd, &topts);
24 ASSERT_OK(err, "test_run");
25 ASSERT_EQ(topts.retval, 0, "test_run");
26
27 result = (__u64 *)fentry_skel->bss;
28 for (i = 0; i < sizeof(*fentry_skel->bss) / sizeof(__u64); i++) {
29 if (!ASSERT_EQ(result[i], 1, "fentry_result"))
30 return -1;
31 }
32
33 fentry_test_lskel__detach(fentry_skel);
34
35 /* zero results for re-attach test */
36 memset(fentry_skel->bss, 0, sizeof(*fentry_skel->bss));
37 return 0;
38 }
39
test_fentry_test(void)40 void test_fentry_test(void)
41 {
42 struct fentry_test_lskel *fentry_skel = NULL;
43 int err;
44
45 fentry_skel = fentry_test_lskel__open_and_load();
46 if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load"))
47 goto cleanup;
48
49 err = fentry_test(fentry_skel);
50 if (!ASSERT_OK(err, "fentry_first_attach"))
51 goto cleanup;
52
53 err = fentry_test(fentry_skel);
54 ASSERT_OK(err, "fentry_second_attach");
55
56 cleanup:
57 fentry_test_lskel__destroy(fentry_skel);
58 }
59