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Diffstat (limited to 'test/syscalls/linux/mknod.cc')
| -rw-r--r-- | test/syscalls/linux/mknod.cc | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/test/syscalls/linux/mknod.cc b/test/syscalls/linux/mknod.cc deleted file mode 100644 index 4c45766c7..000000000 --- a/test/syscalls/linux/mknod.cc +++ /dev/null @@ -1,168 +0,0 @@ -// 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 <errno.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/un.h> -#include <unistd.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(MknodTest, RegularFile) { - const std::string node0 = NewTempAbsPath(); - EXPECT_THAT(mknod(node0.c_str(), S_IFREG, 0), SyscallSucceeds()); - - const std::string node1 = NewTempAbsPath(); - EXPECT_THAT(mknod(node1.c_str(), 0, 0), SyscallSucceeds()); -} - -TEST(MknodTest, MknodAtRegularFile) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string fifo_relpath = NewTempRelPath(); - const std::string fifo = JoinPath(dir.path(), fifo_relpath); - - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path().c_str(), O_RDONLY)); - ASSERT_THAT(mknodat(dirfd.get(), fifo_relpath.c_str(), S_IFIFO | S_IRUSR, 0), - SyscallSucceeds()); - - struct stat st; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); -} - -TEST(MknodTest, MknodOnExistingPathFails) { - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const TempPath slink = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(GetAbsoluteTestTmpdir(), file.path())); - - EXPECT_THAT(mknod(file.path().c_str(), S_IFREG, 0), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(mknod(file.path().c_str(), S_IFIFO, 0), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(mknod(slink.path().c_str(), S_IFREG, 0), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(mknod(slink.path().c_str(), S_IFIFO, 0), - SyscallFailsWithErrno(EEXIST)); -} - -TEST(MknodTest, UnimplementedTypesReturnError) { - const std::string path = NewTempAbsPath(); - - if (IsRunningOnGvisor()) { - ASSERT_THAT(mknod(path.c_str(), S_IFSOCK, 0), - SyscallFailsWithErrno(EOPNOTSUPP)); - } - // These will fail on linux as well since we don't have CAP_MKNOD. - ASSERT_THAT(mknod(path.c_str(), S_IFCHR, 0), SyscallFailsWithErrno(EPERM)); - ASSERT_THAT(mknod(path.c_str(), S_IFBLK, 0), SyscallFailsWithErrno(EPERM)); -} - -TEST(MknodTest, Fifo) { - const std::string fifo = NewTempAbsPath(); - ASSERT_THAT(mknod(fifo.c_str(), S_IFIFO | S_IRUSR | S_IWUSR, 0), - SyscallSucceeds()); - - struct stat st; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); - - std::string msg = "some std::string"; - std::vector<char> buf(512); - - // Read-end of the pipe. - ScopedThread t([&fifo, &buf, &msg]() { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_RDONLY)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_EQ(msg, std::string(buf.data())); - }); - - // Write-end of the pipe. - FileDescriptor wfd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_WRONLY)); - EXPECT_THAT(WriteFd(wfd.get(), msg.c_str(), msg.length()), - SyscallSucceedsWithValue(msg.length())); -} - -TEST(MknodTest, FifoOtrunc) { - const std::string fifo = NewTempAbsPath(); - ASSERT_THAT(mknod(fifo.c_str(), S_IFIFO | S_IRUSR | S_IWUSR, 0), - SyscallSucceeds()); - - struct stat st = {}; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); - - std::string msg = "some std::string"; - std::vector<char> buf(512); - // Read-end of the pipe. - ScopedThread t([&fifo, &buf, &msg]() { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_RDONLY)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_EQ(msg, std::string(buf.data())); - }); - - // Write-end of the pipe. - FileDescriptor wfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_WRONLY | O_TRUNC)); - EXPECT_THAT(WriteFd(wfd.get(), msg.c_str(), msg.length()), - SyscallSucceedsWithValue(msg.length())); -} - -TEST(MknodTest, FifoTruncNoOp) { - const std::string fifo = NewTempAbsPath(); - ASSERT_THAT(mknod(fifo.c_str(), S_IFIFO | S_IRUSR | S_IWUSR, 0), - SyscallSucceeds()); - - EXPECT_THAT(truncate(fifo.c_str(), 0), SyscallFailsWithErrno(EINVAL)); - - struct stat st = {}; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); - - std::string msg = "some std::string"; - std::vector<char> buf(512); - // Read-end of the pipe. - ScopedThread t([&fifo, &buf, &msg]() { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_RDONLY)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_EQ(msg, std::string(buf.data())); - }); - - FileDescriptor wfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_WRONLY | O_TRUNC)); - EXPECT_THAT(ftruncate(wfd.get(), 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(WriteFd(wfd.get(), msg.c_str(), msg.length()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_THAT(ftruncate(wfd.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor |