1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
3
4#define _GNU_SOURCE
5#include <cgroup_helpers.h>
6#include <test_progs.h>
7
8#include "cgrp_kfunc_failure.skel.h"
9#include "cgrp_kfunc_success.skel.h"
10
11static struct cgrp_kfunc_success *open_load_cgrp_kfunc_skel(void)
12{
13	struct cgrp_kfunc_success *skel;
14	int err;
15
16	skel = cgrp_kfunc_success__open();
17	if (!ASSERT_OK_PTR(skel, "skel_open"))
18		return NULL;
19
20	skel->bss->pid = getpid();
21
22	err = cgrp_kfunc_success__load(skel);
23	if (!ASSERT_OK(err, "skel_load"))
24		goto cleanup;
25
26	return skel;
27
28cleanup:
29	cgrp_kfunc_success__destroy(skel);
30	return NULL;
31}
32
33static int mkdir_rm_test_dir(void)
34{
35	int fd;
36	const char *cgrp_path = "cgrp_kfunc";
37
38	fd = create_and_get_cgroup(cgrp_path);
39	if (!ASSERT_GT(fd, 0, "mkdir_cgrp_fd"))
40		return -1;
41
42	close(fd);
43	remove_cgroup(cgrp_path);
44
45	return 0;
46}
47
48static void run_success_test(const char *prog_name)
49{
50	struct cgrp_kfunc_success *skel;
51	struct bpf_program *prog;
52	struct bpf_link *link = NULL;
53
54	skel = open_load_cgrp_kfunc_skel();
55	if (!ASSERT_OK_PTR(skel, "open_load_skel"))
56		return;
57
58	if (!ASSERT_OK(skel->bss->err, "pre_mkdir_err"))
59		goto cleanup;
60
61	prog = bpf_object__find_program_by_name(skel->obj, prog_name);
62	if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
63		goto cleanup;
64
65	link = bpf_program__attach(prog);
66	if (!ASSERT_OK_PTR(link, "attached_link"))
67		goto cleanup;
68
69	ASSERT_EQ(skel->bss->invocations, 0, "pre_rmdir_count");
70	if (!ASSERT_OK(mkdir_rm_test_dir(), "cgrp_mkdir"))
71		goto cleanup;
72
73	ASSERT_EQ(skel->bss->invocations, 1, "post_rmdir_count");
74	ASSERT_OK(skel->bss->err, "post_rmdir_err");
75
76cleanup:
77	bpf_link__destroy(link);
78	cgrp_kfunc_success__destroy(skel);
79}
80
81static const char * const success_tests[] = {
82	"test_cgrp_acquire_release_argument",
83	"test_cgrp_acquire_leave_in_map",
84	"test_cgrp_xchg_release",
85	"test_cgrp_get_release",
86	"test_cgrp_get_ancestors",
87	"test_cgrp_from_id",
88};
89
90void test_cgrp_kfunc(void)
91{
92	int i, err;
93
94	err = setup_cgroup_environment();
95	if (!ASSERT_OK(err, "cgrp_env_setup"))
96		goto cleanup;
97
98	for (i = 0; i < ARRAY_SIZE(success_tests); i++) {
99		if (!test__start_subtest(success_tests[i]))
100			continue;
101
102		run_success_test(success_tests[i]);
103	}
104
105	RUN_TESTS(cgrp_kfunc_failure);
106
107cleanup:
108	cleanup_cgroup_environment();
109}
110