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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2023 Bytedance */
#include <sys/syscall.h>
#include <test_progs.h>
#include <cgroup_helpers.h>
#include "test_task_under_cgroup.skel.h"
#define FOO "/foo"
void test_task_under_cgroup(void)
{
struct test_task_under_cgroup *skel;
int ret, foo;
pid_t pid;
foo = test__join_cgroup(FOO);
if (!ASSERT_OK(foo < 0, "cgroup_join_foo"))
return;
skel = test_task_under_cgroup__open();
if (!ASSERT_OK_PTR(skel, "test_task_under_cgroup__open"))
goto cleanup;
skel->rodata->local_pid = getpid();
skel->bss->remote_pid = getpid();
skel->rodata->cgid = get_cgroup_id(FOO);
ret = test_task_under_cgroup__load(skel);
if (!ASSERT_OK(ret, "test_task_under_cgroup__load"))
goto cleanup;
/* First, attach the LSM program, and then it will be triggered when the
* TP_BTF program is attached.
*/
skel->links.lsm_run = bpf_program__attach_lsm(skel->progs.lsm_run);
if (!ASSERT_OK_PTR(skel->links.lsm_run, "attach_lsm"))
goto cleanup;
skel->links.tp_btf_run = bpf_program__attach_trace(skel->progs.tp_btf_run);
if (!ASSERT_OK_PTR(skel->links.tp_btf_run, "attach_tp_btf"))
goto cleanup;
pid = fork();
if (pid == 0)
exit(0);
ret = (pid == -1);
if (ASSERT_OK(ret, "fork process"))
wait(NULL);
test_task_under_cgroup__detach(skel);
ASSERT_NEQ(skel->bss->remote_pid, skel->rodata->local_pid,
"test task_under_cgroup");
cleanup:
test_task_under_cgroup__destroy(skel);
close(foo);
}
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