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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025 Microsoft */
#include <test_progs.h>
#include "kfunc_call_test.skel.h"
#include "kfunc_call_test.lskel.h"
#include "test_kernel_flag.skel.h"
void test_kernel_flag(void)
{
struct test_kernel_flag *lsm_skel;
struct kfunc_call_test *skel = NULL;
struct kfunc_call_test_lskel *lskel = NULL;
struct bpf_program *prog;
__u32 flags;
int ret;
lsm_skel = test_kernel_flag__open();
if (!ASSERT_OK_PTR(lsm_skel, "lsm_skel"))
return;
prog = lsm_skel->progs.bpf;
flags = bpf_program__flags(prog);
ASSERT_EQ(flags & BPF_F_SLEEPABLE,
BPF_F_SLEEPABLE, "sleepable in program flags");
ret = bpf_program__add_flags(prog, BPF_F_ANY_ALIGNMENT);
ASSERT_OK(ret, "bpf_program__add_flags ret");
ASSERT_EQ(bpf_program__flags(prog), flags | BPF_F_ANY_ALIGNMENT,
"bpf_program__add_flags value");
ret = bpf_program__clear_flags(prog, BPF_F_ANY_ALIGNMENT);
ASSERT_OK(ret, "bpf_program__clear_flags ret");
ASSERT_EQ(bpf_program__flags(prog), flags, "bpf_program__clear_flags value");
ret = test_kernel_flag__load(lsm_skel);
if (!ASSERT_OK(ret, "test_kernel_flag__load"))
goto close_prog;
lsm_skel->bss->monitored_tid = sys_gettid();
ret = test_kernel_flag__attach(lsm_skel);
if (!ASSERT_OK(ret, "test_kernel_flag__attach"))
goto close_prog;
/* Test with skel. This should pass the gatekeeper */
skel = kfunc_call_test__open_and_load();
if (!ASSERT_OK_PTR(skel, "skel"))
goto close_prog;
/* Test with lskel. This should fail due to blocking kernel-based bpf() invocations */
lskel = kfunc_call_test_lskel__open_and_load();
if (!ASSERT_ERR_PTR(lskel, "lskel"))
goto close_prog;
close_prog:
if (skel)
kfunc_call_test__destroy(skel);
if (lskel)
kfunc_call_test_lskel__destroy(lskel);
lsm_skel->bss->monitored_tid = 0;
test_kernel_flag__destroy(lsm_skel);
}
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