80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
// Copyright 2018 The gVisor Authors.
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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 <fcntl.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "gtest/gtest.h"
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#include "gtest/gtest.h"
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#include "test/util/temp_path.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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// This test is currently very rudimentary.
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//
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// TODO(edahlgren):
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// * bad buffer states (EFAULT).
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// * bad fds (wrong permission, wrong type of file, EBADF).
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// * check offset is not incremented.
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// * check for EOF.
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// * writing to pipes, symlinks, special files.
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class Pwrite64 : public ::testing::Test {
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void SetUp() override {
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name_ = NewTempAbsPath();
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int fd;
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ASSERT_THAT(fd = open(name_.c_str(), O_CREAT, 0644), SyscallSucceeds());
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EXPECT_THAT(close(fd), SyscallSucceeds());
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}
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void TearDown() override { unlink(name_.c_str()); }
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public:
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std::string name_;
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};
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TEST_F(Pwrite64, AppendOnly) {
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int fd;
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ASSERT_THAT(fd = open(name_.c_str(), O_APPEND | O_RDWR), SyscallSucceeds());
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constexpr int64_t kBufSize = 1024;
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std::vector<char> buf(kBufSize);
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std::fill(buf.begin(), buf.end(), 'a');
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EXPECT_THAT(PwriteFd(fd, buf.data(), buf.size(), 0),
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SyscallSucceedsWithValue(buf.size()));
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EXPECT_THAT(lseek(fd, 0, SEEK_CUR), SyscallSucceedsWithValue(0));
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EXPECT_THAT(close(fd), SyscallSucceeds());
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}
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TEST_F(Pwrite64, InvalidArgs) {
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int fd;
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ASSERT_THAT(fd = open(name_.c_str(), O_APPEND | O_RDWR), SyscallSucceeds());
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constexpr int64_t kBufSize = 1024;
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std::vector<char> buf(kBufSize);
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std::fill(buf.begin(), buf.end(), 'a');
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EXPECT_THAT(PwriteFd(fd, buf.data(), buf.size(), -1),
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SyscallFailsWithErrno(EINVAL));
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EXPECT_THAT(close(fd), 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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