86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "test/syscalls/linux/socket_non_stream_blocking.h"
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#include <stdio.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#include "gtest/gtest.h"
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#include "absl/time/clock.h"
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#include "absl/time/time.h"
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#include "test/syscalls/linux/socket_test_util.h"
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#include "test/syscalls/linux/unix_domain_socket_test_util.h"
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#include "test/util/test_util.h"
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#include "test/util/thread_util.h"
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namespace gvisor {
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namespace testing {
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TEST_P(BlockingNonStreamSocketPairTest, RecvLessThanBufferWaitAll) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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char sent_data[100];
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RandomizeBuffer(sent_data, sizeof(sent_data));
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ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)),
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SyscallSucceedsWithValue(sizeof(sent_data)));
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char received_data[sizeof(sent_data) * 2] = {};
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ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data,
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sizeof(received_data), MSG_WAITALL),
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SyscallSucceedsWithValue(sizeof(sent_data)));
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}
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// This test tests reading from a socket with MSG_TRUNC | MSG_PEEK and a zero
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// length receive buffer and MSG_DONTWAIT. The recvmsg call should block on
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// reading the data.
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TEST_P(BlockingNonStreamSocketPairTest,
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RecvmsgTruncPeekDontwaitZeroLenBlocking) {
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auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
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// NOTE: We don't initially send any data on the socket.
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const int data_size = 10;
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char sent_data[data_size];
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RandomizeBuffer(sent_data, data_size);
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// The receive buffer is of zero length.
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char peek_data[0] = {};
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struct iovec peek_iov;
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peek_iov.iov_base = peek_data;
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peek_iov.iov_len = sizeof(peek_data);
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struct msghdr peek_msg = {};
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peek_msg.msg_flags = -1;
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peek_msg.msg_iov = &peek_iov;
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peek_msg.msg_iovlen = 1;
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ScopedThread t([&]() {
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// The syscall succeeds returning the full size of the message on the
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// socket. This should block until there is data on the socket.
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ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &peek_msg,
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MSG_TRUNC | MSG_PEEK),
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SyscallSucceedsWithValue(data_size));
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});
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absl::SleepFor(absl::Seconds(1));
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ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), sent_data, data_size, 0),
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SyscallSucceedsWithValue(data_size));
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}
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} // namespace testing
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} // namespace gvisor
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