54 lines
1.4 KiB
C++
54 lines
1.4 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 <sys/mman.h>
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#include "gtest/gtest.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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class MunmapTest : public ::testing::Test {
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protected:
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void SetUp() override {
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m_ = mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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ASSERT_NE(MAP_FAILED, m_);
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}
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void* m_ = nullptr;
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};
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TEST_F(MunmapTest, HappyCase) {
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EXPECT_THAT(munmap(m_, kPageSize), SyscallSucceeds());
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}
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TEST_F(MunmapTest, ZeroLength) {
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EXPECT_THAT(munmap(m_, 0), SyscallFailsWithErrno(EINVAL));
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}
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TEST_F(MunmapTest, LastPageRoundUp) {
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// Attempt to unmap up to and including the last page.
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EXPECT_THAT(munmap(m_, static_cast<size_t>(-kPageSize + 1)),
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SyscallFailsWithErrno(EINVAL));
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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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