github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/syscalls/linux/file_base.h (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  #ifndef GVISOR_TEST_SYSCALLS_FILE_BASE_H_
    16  #define GVISOR_TEST_SYSCALLS_FILE_BASE_H_
    17  
    18  #include <arpa/inet.h>
    19  #include <errno.h>
    20  #include <fcntl.h>
    21  #include <netinet/in.h>
    22  #include <stddef.h>
    23  #include <stdio.h>
    24  #include <string.h>
    25  #include <sys/socket.h>
    26  #include <sys/stat.h>
    27  #include <sys/types.h>
    28  #include <sys/uio.h>
    29  #include <unistd.h>
    30  
    31  #include <cstring>
    32  #include <string>
    33  
    34  #include "gmock/gmock.h"
    35  #include "gtest/gtest.h"
    36  #include "absl/strings/string_view.h"
    37  #include "test/util/file_descriptor.h"
    38  #include "test/util/posix_error.h"
    39  #include "test/util/temp_path.h"
    40  #include "test/util/test_util.h"
    41  
    42  namespace gvisor {
    43  namespace testing {
    44  
    45  class FileTest : public ::testing::Test {
    46   public:
    47    void SetUp() override {
    48      test_pipe_[0] = -1;
    49      test_pipe_[1] = -1;
    50  
    51      test_file_name_ = NewTempAbsPath();
    52      test_file_fd_ = ASSERT_NO_ERRNO_AND_VALUE(
    53          Open(test_file_name_, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR));
    54  
    55      ASSERT_THAT(pipe(test_pipe_), SyscallSucceeds());
    56      ASSERT_THAT(fcntl(test_pipe_[0], F_SETFL, O_NONBLOCK), SyscallSucceeds());
    57    }
    58  
    59    // CloseFile will allow the test to manually close the file descriptor.
    60    void CloseFile() { test_file_fd_.reset(); }
    61  
    62    // UnlinkFile will allow the test to manually unlink the file.
    63    void UnlinkFile() {
    64      if (!test_file_name_.empty()) {
    65        EXPECT_THAT(unlink(test_file_name_.c_str()), SyscallSucceeds());
    66        test_file_name_.clear();
    67      }
    68    }
    69  
    70    // ClosePipes will allow the test to manually close the pipes.
    71    void ClosePipes() {
    72      if (test_pipe_[0] > 0) {
    73        EXPECT_THAT(close(test_pipe_[0]), SyscallSucceeds());
    74      }
    75  
    76      if (test_pipe_[1] > 0) {
    77        EXPECT_THAT(close(test_pipe_[1]), SyscallSucceeds());
    78      }
    79  
    80      test_pipe_[0] = -1;
    81      test_pipe_[1] = -1;
    82    }
    83  
    84    void TearDown() override {
    85      CloseFile();
    86      UnlinkFile();
    87      ClosePipes();
    88    }
    89  
    90   protected:
    91    std::string test_file_name_;
    92    FileDescriptor test_file_fd_;
    93  
    94    int test_pipe_[2];
    95  };
    96  
    97  }  // namespace testing
    98  }  // namespace gvisor
    99  
   100  #endif  // GVISOR_TEST_SYSCALLS_FILE_BASE_H_