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
12static 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
29cleanup:
30	task_kfunc_success__destroy(skel);
31	return NULL;
32}
33
34static 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
66cleanup:
67	bpf_link__destroy(link);
68	task_kfunc_success__destroy(skel);
69}
70
71static 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
86void 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