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
open_load_cgrp_kfunc_skel(void)11 static 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
28 cleanup:
29 cgrp_kfunc_success__destroy(skel);
30 return NULL;
31 }
32
mkdir_rm_test_dir(void)33 static 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
run_success_test(const char * prog_name)48 static 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
76 cleanup:
77 bpf_link__destroy(link);
78 cgrp_kfunc_success__destroy(skel);
79 }
80
81 static 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
test_cgrp_kfunc(void)90 void 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
107 cleanup:
108 cleanup_cgroup_environment();
109 }
110