45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <errno.h>
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#include <time.h>
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#include "gtest/gtest.h"
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#include "test/util/proc_util.h"
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#include "test/util/test_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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time_t vsyscall_time(time_t* t) {
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constexpr uint64_t kVsyscallTimeEntry = 0xffffffffff600400;
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return reinterpret_cast<time_t (*)(time_t*)>(kVsyscallTimeEntry)(t);
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}
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TEST(VsyscallTest, VsyscallAlwaysAvailableOnGvisor) {
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SKIP_IF(!IsRunningOnGvisor());
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// Vsyscall is always advertised by gvisor.
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EXPECT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled()));
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// Vsyscall should always works on gvisor.
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time_t t;
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EXPECT_THAT(vsyscall_time(&t), SyscallSucceeds());
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}
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} // namespace
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} // namespace testing
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} // namespace gvisor
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