1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2019 Facebook */
3 #include <test_progs.h>
4 #include "fentry_test.lskel.h"
5 #include "fentry_many_args.skel.h"
6
7 static int fentry_test_common(struct fentry_test_lskel *fentry_skel)
8 {
9 int err, prog_fd, i;
10 int link_fd;
11 __u64 *result;
12 LIBBPF_OPTS(bpf_test_run_opts, topts);
13
14 err = fentry_test_lskel__attach(fentry_skel);
15 if (!ASSERT_OK(err, "fentry_attach"))
16 return err;
17
18 /* Check that already linked program can't be attached again. */
19 link_fd = fentry_test_lskel__test1__attach(fentry_skel);
20 if (!ASSERT_LT(link_fd, 0, "fentry_attach_link"))
21 return -1;
22
23 prog_fd = fentry_skel->progs.test1.prog_fd;
24 err = bpf_prog_test_run_opts(prog_fd, &topts);
25 ASSERT_OK(err, "test_run");
26 ASSERT_EQ(topts.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_lskel__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
41 static void fentry_test(void)
42 {
43 struct fentry_test_lskel *fentry_skel = NULL;
44 int err;
45
46 fentry_skel = fentry_test_lskel__open_and_load();
47 if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load"))
48 goto cleanup;
49
50 err = fentry_test_common(fentry_skel);
51 if (!ASSERT_OK(err, "fentry_first_attach"))
52 goto cleanup;
53
54 err = fentry_test_common(fentry_skel);
55 ASSERT_OK(err, "fentry_second_attach");
56
57 cleanup:
58 fentry_test_lskel__destroy(fentry_skel);
59 }
60
61 static void fentry_many_args(void)
62 {
63 struct fentry_many_args *fentry_skel = NULL;
64 int err;
65
66 fentry_skel = fentry_many_args__open_and_load();
67 if (!ASSERT_OK_PTR(fentry_skel, "fentry_many_args_skel_load"))
68 goto cleanup;
69
70 err = fentry_many_args__attach(fentry_skel);
71 if (!ASSERT_OK(err, "fentry_many_args_attach"))
72 goto cleanup;
73
74 ASSERT_OK(trigger_module_test_read(1), "trigger_read");
75
76 ASSERT_EQ(fentry_skel->bss->test1_result, 1,
77 "fentry_many_args_result1");
78 ASSERT_EQ(fentry_skel->bss->test2_result, 1,
79 "fentry_many_args_result2");
80 ASSERT_EQ(fentry_skel->bss->test3_result, 1,
81 "fentry_many_args_result3");
82
83 cleanup:
84 fentry_many_args__destroy(fentry_skel);
85 }
86
87 void test_fentry_test(void)
88 {
89 if (test__start_subtest("fentry"))
90 fentry_test();
91 if (test__start_subtest("fentry_many_args"))
92 fentry_many_args();
93 }
94
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