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diff --git a/test/syscalls/linux/creat.cc b/test/syscalls/linux/creat.cc
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+// Copyright 2018 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <string>
+
+#include "gtest/gtest.h"
+#include "test/util/fs_util.h"
+#include "test/util/temp_path.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+constexpr int kMode = 0666;
+
+TEST(CreatTest, CreatCreatesNewFile) {
+ std::string const path = NewTempAbsPath();
+ struct stat buf;
+ int fd;
+ ASSERT_THAT(stat(path.c_str(), &buf), SyscallFailsWithErrno(ENOENT));
+ ASSERT_THAT(fd = creat(path.c_str(), kMode), SyscallSucceeds());
+ EXPECT_THAT(close(fd), SyscallSucceeds());
+ EXPECT_THAT(stat(path.c_str(), &buf), SyscallSucceeds());
+}
+
+TEST(CreatTest, CreatTruncatesExistingFile) {
+ auto temp_path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
+ int fd;
+ ASSERT_NO_ERRNO(SetContents(temp_path.path(), "non-empty"));
+ ASSERT_THAT(fd = creat(temp_path.path().c_str(), kMode), SyscallSucceeds());
+ EXPECT_THAT(close(fd), SyscallSucceeds());
+ std::string new_contents;
+ ASSERT_NO_ERRNO(GetContents(temp_path.path(), &new_contents));
+ EXPECT_EQ("", new_contents);
+}
+
+TEST(CreatTest, CreatWithNameTooLong) {
+ // Start with a unique name, and pad it to NAME_MAX + 1;
+ std::string name = NewTempRelPath();
+ int padding = (NAME_MAX + 1) - name.size();
+ name.append(padding, 'x');
+ const std::string& path = JoinPath(GetAbsoluteTestTmpdir(), name);
+
+ // Creation should return ENAMETOOLONG.
+ ASSERT_THAT(creat(path.c_str(), kMode), SyscallFailsWithErrno(ENAMETOOLONG));
+}
+
+} // namespace
+
+} // namespace testing
+} // namespace gvisor