github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/syscalls/linux/socket_stream_nonblock.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_stream_nonblock.h"
    16  
    17  #include <sys/socket.h>
    18  #include <sys/types.h>
    19  #include <sys/uio.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  
    30  using ::testing::Le;
    31  
    32  TEST_P(NonBlockingStreamSocketPairTest, SendMsgTooLarge) {
    33    auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
    34  
    35    int sndbuf;
    36    socklen_t length = sizeof(sndbuf);
    37    ASSERT_THAT(
    38        getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &sndbuf, &length),
    39        SyscallSucceeds());
    40  
    41    // Make the call too large to fit in the send buffer.
    42    const int buffer_size = 3 * sndbuf;
    43  
    44    EXPECT_THAT(SendLargeSendMsg(sockets, buffer_size, false /* reader */),
    45                SyscallSucceedsWithValue(Le(buffer_size)));
    46  }
    47  
    48  }  // namespace testing
    49  }  // namespace gvisor