github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/syscalls/linux/socket_non_blocking.cc (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  #include "test/syscalls/linux/socket_non_blocking.h"
    16  
    17  #include <stdio.h>
    18  #include <sys/socket.h>
    19  #include <sys/types.h>
    20  #include <sys/un.h>
    21  
    22  #include "gtest/gtest.h"
    23  #include "test/syscalls/linux/socket_test_util.h"
    24  #include "test/syscalls/linux/unix_domain_socket_test_util.h"
    25  #include "test/util/test_util.h"
    26  
    27  namespace gvisor {
    28  namespace testing {
    29  namespace {
    30  
    31  TEST_P(NonBlockingSocketPairTest, ReadNothingAvailable) {
    32    auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
    33    char buf[20] = {};
    34    ASSERT_THAT(ReadFd(sockets->first_fd(), buf, sizeof(buf)),
    35                SyscallFailsWithErrno(EAGAIN));
    36  }
    37  
    38  TEST_P(NonBlockingSocketPairTest, RecvNothingAvailable) {
    39    auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
    40    char buf[20] = {};
    41    ASSERT_THAT(RetryEINTR(recv)(sockets->first_fd(), buf, sizeof(buf), 0),
    42                SyscallFailsWithErrno(EAGAIN));
    43  }
    44  
    45  TEST_P(NonBlockingSocketPairTest, RecvMsgNothingAvailable) {
    46    auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
    47  
    48    struct iovec iov;
    49    char buf[20] = {};
    50    iov.iov_base = buf;
    51    iov.iov_len = sizeof(buf);
    52    struct msghdr msg = {};
    53    msg.msg_iov = &iov;
    54    msg.msg_iovlen = 1;
    55  
    56    ASSERT_THAT(RetryEINTR(recvmsg)(sockets->first_fd(), &msg, 0),
    57                SyscallFailsWithErrno(EAGAIN));
    58  }
    59  
    60  }  // namespace
    61  }  // namespace testing
    62  }  // namespace gvisor