61 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2023 Bytedance */3 4#include <sys/syscall.h>5#include <test_progs.h>6#include <cgroup_helpers.h>7#include "test_task_under_cgroup.skel.h"8 9#define FOO "/foo"10 11void test_task_under_cgroup(void)12{13 struct test_task_under_cgroup *skel;14 int ret, foo;15 pid_t pid;16 17 foo = test__join_cgroup(FOO);18 if (!ASSERT_OK(foo < 0, "cgroup_join_foo"))19 return;20 21 skel = test_task_under_cgroup__open();22 if (!ASSERT_OK_PTR(skel, "test_task_under_cgroup__open"))23 goto cleanup;24 25 skel->rodata->local_pid = getpid();26 skel->bss->remote_pid = getpid();27 skel->rodata->cgid = get_cgroup_id(FOO);28 29 ret = test_task_under_cgroup__load(skel);30 if (!ASSERT_OK(ret, "test_task_under_cgroup__load"))31 goto cleanup;32 33 /* First, attach the LSM program, and then it will be triggered when the34 * TP_BTF program is attached.35 */36 skel->links.lsm_run = bpf_program__attach_lsm(skel->progs.lsm_run);37 if (!ASSERT_OK_PTR(skel->links.lsm_run, "attach_lsm"))38 goto cleanup;39 40 skel->links.tp_btf_run = bpf_program__attach_trace(skel->progs.tp_btf_run);41 if (!ASSERT_OK_PTR(skel->links.tp_btf_run, "attach_tp_btf"))42 goto cleanup;43 44 pid = fork();45 if (pid == 0)46 exit(0);47 48 ret = (pid == -1);49 if (ASSERT_OK(ret, "fork process"))50 wait(NULL);51 52 test_task_under_cgroup__detach(skel);53 54 ASSERT_NEQ(skel->bss->remote_pid, skel->rodata->local_pid,55 "test task_under_cgroup");56 57cleanup:58 test_task_under_cgroup__destroy(skel);59 close(foo);60}61