diff options
Diffstat (limited to 'test/syscalls/linux/socket_stream_blocking.cc')
| -rw-r--r-- | test/syscalls/linux/socket_stream_blocking.cc | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/test/syscalls/linux/socket_stream_blocking.cc b/test/syscalls/linux/socket_stream_blocking.cc deleted file mode 100644 index 538ee2268..000000000 --- a/test/syscalls/linux/socket_stream_blocking.cc +++ /dev/null @@ -1,163 +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 "test/syscalls/linux/socket_stream_blocking.h" - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(BlockingStreamSocketPairTest, BlockPartialWriteClosed) { - // FIXME(b/35921550): gVisor doesn't support SO_SNDBUF on UDS, nor does it - // enforce any limit; it will write arbitrary amounts of data without - // blocking. - SKIP_IF(IsRunningOnGvisor()); - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int buffer_size; - socklen_t length = sizeof(buffer_size); - ASSERT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, - &buffer_size, &length), - SyscallSucceeds()); - - int wfd = sockets->first_fd(); - ScopedThread t([wfd, buffer_size]() { - std::vector<char> buf(2 * buffer_size); - // Write more than fits in the buffer. Blocks then returns partial write - // when the other end is closed. The next call returns EPIPE. - // - // N.B. writes occur in chunks, so we may see less than buffer_size from - // the first call. - ASSERT_THAT(write(wfd, buf.data(), buf.size()), - SyscallSucceedsWithValue(::testing::Gt(0))); - ASSERT_THAT(write(wfd, buf.data(), buf.size()), - ::testing::AnyOf(SyscallFailsWithErrno(EPIPE), - SyscallFailsWithErrno(ECONNRESET))); - }); - - // Leave time for write to become blocked. - absl::SleepFor(absl::Seconds(1)); - - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); -} - -// Random save may interrupt the call to sendmsg() in SendLargeSendMsg(), -// causing the write to be incomplete and the test to hang. -TEST_P(BlockingStreamSocketPairTest, SendMsgTooLarge_NoRandomSave) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int sndbuf; - socklen_t length = sizeof(sndbuf); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &sndbuf, &length), - SyscallSucceeds()); - - // Make the call too large to fit in the send buffer. - const int buffer_size = 3 * sndbuf; - - EXPECT_THAT(SendLargeSendMsg(sockets, buffer_size, true /* reader */), - SyscallSucceedsWithValue(buffer_size)); -} - -TEST_P(BlockingStreamSocketPairTest, RecvLessThanBuffer) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[200] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); -} - -// Test that MSG_WAITALL causes recv to block until all requested data is -// received. Random save can interrupt blocking and cause received data to be -// returned, even if the amount received is less than the full requested amount. -TEST_P(BlockingStreamSocketPairTest, RecvLessThanBufferWaitAll_NoRandomSave) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - constexpr auto kDuration = absl::Milliseconds(200); - auto before = Now(CLOCK_MONOTONIC); - - const ScopedThread t([&]() { - absl::SleepFor(kDuration); - - // Don't let saving after the write interrupt the blocking recv. - const DisableSave ds; - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - }); - - char received_data[sizeof(sent_data) * 2] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_WAITALL), - SyscallSucceedsWithValue(sizeof(received_data))); - - auto after = Now(CLOCK_MONOTONIC); - EXPECT_GE(after - before, kDuration); -} - -TEST_P(BlockingStreamSocketPairTest, SendTimeout) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - std::vector<char> buf(kPageSize); - // We don't know how much data the socketpair will buffer, so we may do an - // arbitrarily large number of writes; saving after each write causes this - // test's time to explode. - const DisableSave ds; - for (;;) { - int ret; - ASSERT_THAT( - ret = RetryEINTR(send)(sockets->first_fd(), buf.data(), buf.size(), 0), - ::testing::AnyOf(SyscallSucceeds(), SyscallFailsWithErrno(EAGAIN))); - if (ret == -1) { - break; - } - } -} - -} // namespace testing -} // namespace gvisor |