1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
3
4 #define _GNU_SOURCE
5 #include <sys/wait.h>
6 #include <test_progs.h>
7 #include <unistd.h>
8
9 #include "task_kfunc_failure.skel.h"
10 #include "task_kfunc_success.skel.h"
11
12 static struct task_kfunc_success *open_load_task_kfunc_skel(void)
13 {
14 struct task_kfunc_success *skel;
15 int err;
16
17 skel = task_kfunc_success__open();
18 if (!ASSERT_OK_PTR(skel, "skel_open"))
19 return NULL;
20
21 skel->bss->pid = getpid();
22
23 err = task_kfunc_success__load(skel);
24 if (!ASSERT_OK(err, "skel_load"))
25 goto cleanup;
26
27 return skel;
28
29 cleanup:
30 task_kfunc_success__destroy(skel);
31 return NULL;
32 }
33
34 static void run_success_test(const char *prog_name)
35 {
36 struct task_kfunc_success *skel;
37 int status;
38 pid_t child_pid;
39 struct bpf_program *prog;
40 struct bpf_link *link = NULL;
41
42 skel = open_load_task_kfunc_skel();
43 if (!ASSERT_OK_PTR(skel, "open_load_skel"))
44 return;
45
46 if (!ASSERT_OK(skel->bss->err, "pre_spawn_err"))
47 goto cleanup;
48
49 prog = bpf_object__find_program_by_name(skel->obj, prog_name);
50 if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
51 goto cleanup;
52
53 link = bpf_program__attach(prog);
54 if (!ASSERT_OK_PTR(link, "attached_link"))
55 goto cleanup;
56
57 child_pid = fork();
58 if (!ASSERT_GT(child_pid, -1, "child_pid"))
59 goto cleanup;
60 if (child_pid == 0)
61 _exit(0);
62 waitpid(child_pid, &status, 0);
63
64 ASSERT_OK(skel->bss->err, "post_wait_err");
65
66 cleanup:
67 bpf_link__destroy(link);
68 task_kfunc_success__destroy(skel);
69 }
70
71 static const char * const success_tests[] = {
72 "test_task_acquire_release_argument",
73 "test_task_acquire_release_current",
74 "test_task_acquire_leave_in_map",
75 "test_task_xchg_release",
76 "test_task_map_acquire_release",
77 "test_task_current_acquire_release",
78 "test_task_from_pid_arg",
79 "test_task_from_pid_current",
80 "test_task_from_pid_invalid",
81 "task_kfunc_acquire_trusted_walked",
82 "test_task_kfunc_flavor_relo",
83 "test_task_kfunc_flavor_relo_not_found",
84 };
85
86 void test_task_kfunc(void)
87 {
88 int i;
89
90 for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
91 if (!test__start_subtest(success_tests[i]))
92 continue;
93
94 run_success_test(success_tests[i]);
95 }
96
97 RUN_TESTS(task_kfunc_failure);
98 }
99
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