51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
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// 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 <sched.h>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "absl/synchronization/mutex.h"
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#include "test/util/test_util.h"
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#include "test/util/thread_util.h"
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namespace gvisor {
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namespace testing {
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namespace {
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TEST(UnshareTest, AllowsZeroFlags) {
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ASSERT_THAT(unshare(0), SyscallSucceeds());
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}
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TEST(UnshareTest, ThreadFlagFailsIfMultithreaded) {
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absl::Mutex mu;
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bool finished = false;
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ScopedThread t([&] {
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mu.Lock();
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mu.Await(absl::Condition(&finished));
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mu.Unlock();
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});
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ASSERT_THAT(unshare(CLONE_THREAD), SyscallFailsWithErrno(EINVAL));
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mu.Lock();
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finished = true;
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mu.Unlock();
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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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