1 files changed, 0 insertions, 373 deletions
diff --git a/test/syscalls/linux/signalfd.cc b/test/syscalls/linux/signalfd.cc
deleted file mode 100644
index 389e5fca2..000000000
--- a/test/syscalls/linux/signalfd.cc
+++ /dev/null
@@ -1,373 +0,0 @@
-// Copyright 2019 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 <errno.h>
-#include <poll.h>
-#include <signal.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/signalfd.h>
-#include <unistd.h>
-
-#include <functional>
-#include <vector>
-
-#include "gtest/gtest.h"
-#include "absl/synchronization/mutex.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/posix_error.h"
-#include "test/util/signal_util.h"
-#include "test/util/test_util.h"
-#include "test/util/thread_util.h"
-
-using ::testing::KilledBySignal;
-
-namespace gvisor {
-namespace testing {
-
-namespace {
-
-constexpr int kSigno = SIGUSR1;
-constexpr int kSignoMax = 64;  // SIGRTMAX
-constexpr int kSignoAlt = SIGUSR2;
-
-// Returns a new signalfd.
-inline PosixErrorOr<FileDescriptor> NewSignalFD(sigset_t* mask, int flags = 0) {
-  int fd = signalfd(-1, mask, flags);
-  MaybeSave();
-  if (fd < 0) {
-    return PosixError(errno, "signalfd");
-  }
-  return FileDescriptor(fd);
-}
-
-class SignalfdTest : public ::testing::TestWithParam<int> {};
-
-TEST_P(SignalfdTest, Basic) {
-  int signo = GetParam();
-  // Create the signalfd.
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, signo);
-  FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0));
-
-  // Deliver the blocked signal.
-  const auto scoped_sigmask =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo));
-  ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds());
-
-  // We should now read the signal.
-  struct signalfd_siginfo rbuf;
-  ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallSucceedsWithValue(sizeof(rbuf)));
-  EXPECT_EQ(rbuf.ssi_signo, signo);
-}
-
-TEST_P(SignalfdTest, MaskWorks) {
-  int signo = GetParam();
-  // Create two signalfds with different masks.
-  sigset_t mask1, mask2;
-  sigemptyset(&mask1);
-  sigemptyset(&mask2);
-  sigaddset(&mask1, signo);
-  sigaddset(&mask2, kSignoAlt);
-  FileDescriptor fd1 = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask1, 0));
-  FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask2, 0));
-
-  // Deliver the two signals.
-  const auto scoped_sigmask1 =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo));
-  const auto scoped_sigmask2 =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, kSignoAlt));
-  ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds());
-  ASSERT_THAT(tgkill(getpid(), gettid(), kSignoAlt), SyscallSucceeds());
-
-  // We should see the signals on the appropriate signalfds.
-  //
-  // We read in the opposite order as the signals deliver above, to ensure that
-  // we don't happen to read the correct signal from the correct signalfd.
-  struct signalfd_siginfo rbuf1, rbuf2;
-  ASSERT_THAT(read(fd2.get(), &rbuf2, sizeof(rbuf2)),
-              SyscallSucceedsWithValue(sizeof(rbuf2)));
-  EXPECT_EQ(rbuf2.ssi_signo, kSignoAlt);
-  ASSERT_THAT(read(fd1.get(), &rbuf1, sizeof(rbuf1)),
-              SyscallSucceedsWithValue(sizeof(rbuf1)));
-  EXPECT_EQ(rbuf1.ssi_signo, signo);
-}
-
-TEST(Signalfd, Cloexec) {
-  // Exec tests confirm that O_CLOEXEC has the intended effect. We just create a
-  // signalfd with the appropriate flag here and assert that the FD has it set.
-  sigset_t mask;
-  sigemptyset(&mask);
-  FileDescriptor fd =
-      ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_CLOEXEC));
-  EXPECT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC));
-}
-
-TEST_P(SignalfdTest, Blocking) {
-  int signo = GetParam();
-  // Create the signalfd in blocking mode.
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, signo);
-  FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0));
-
-  // Shared tid variable.
-  absl::Mutex mu;
-  bool has_tid;
-  pid_t tid;
-
-  // Start a thread reading.
-  ScopedThread t([&] {
-    // Copy the tid and notify the caller.
-    {
-      absl::MutexLock ml(&mu);
-      tid = gettid();
-      has_tid = true;
-    }
-
-    // Read the signal from the signalfd.
-    struct signalfd_siginfo rbuf;
-    ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-                SyscallSucceedsWithValue(sizeof(rbuf)));
-    EXPECT_EQ(rbuf.ssi_signo, signo);
-  });
-
-  // Wait until blocked.
-  absl::MutexLock ml(&mu);
-  mu.Await(absl::Condition(&has_tid));
-
-  // Deliver the signal to either the waiting thread, or
-  // to this thread. N.B. this is a bug in the core gVisor
-  // behavior for signalfd, and needs to be fixed.
-  //
-  // See gvisor.dev/issue/139.
-  if (IsRunningOnGvisor()) {
-    ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds());
-  } else {
-    ASSERT_THAT(tgkill(getpid(), tid, signo), SyscallSucceeds());
-  }
-
-  // Ensure that it was received.
-  t.Join();
-}
-
-TEST_P(SignalfdTest, ThreadGroup) {
-  int signo = GetParam();
-  // Create the signalfd in blocking mode.
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, signo);
-  FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0));
-
-  // Shared variable.
-  absl::Mutex mu;
-  bool first = false;
-  bool second = false;
-
-  // Start a thread reading.
-  ScopedThread t([&] {
-    // Read the signal from the signalfd.
-    struct signalfd_siginfo rbuf;
-    ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-                SyscallSucceedsWithValue(sizeof(rbuf)));
-    EXPECT_EQ(rbuf.ssi_signo, signo);
-
-    // Wait for the other thread.
-    absl::MutexLock ml(&mu);
-    first = true;
-    mu.Await(absl::Condition(&second));
-  });
-
-  // Deliver the signal to the threadgroup.
-  ASSERT_THAT(kill(getpid(), signo), SyscallSucceeds());
-
-  // Wait for the first thread to process.
-  {
-    absl::MutexLock ml(&mu);
-    mu.Await(absl::Condition(&first));
-  }
-
-  // Deliver to the thread group again (other thread still exists).
-  ASSERT_THAT(kill(getpid(), signo), SyscallSucceeds());
-
-  // Ensure that we can also receive it.
-  struct signalfd_siginfo rbuf;
-  ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallSucceedsWithValue(sizeof(rbuf)));
-  EXPECT_EQ(rbuf.ssi_signo, signo);
-
-  // Mark the test as done.
-  {
-    absl::MutexLock ml(&mu);
-    second = true;
-  }
-
-  // The other thread should be joinable.
-  t.Join();
-}
-
-TEST_P(SignalfdTest, Nonblock) {
-  int signo = GetParam();
-  // Create the signalfd in non-blocking mode.
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, signo);
-  FileDescriptor fd =
-      ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_NONBLOCK));
-
-  // We should return if we attempt to read.
-  struct signalfd_siginfo rbuf;
-  ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallFailsWithErrno(EWOULDBLOCK));
-
-  // Block and deliver the signal.
-  const auto scoped_sigmask =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo));
-  ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds());
-
-  // Ensure that a read actually works.
-  ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallSucceedsWithValue(sizeof(rbuf)));
-  EXPECT_EQ(rbuf.ssi_signo, signo);
-
-  // Should block again.
-  EXPECT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallFailsWithErrno(EWOULDBLOCK));
-}
-
-TEST_P(SignalfdTest, SetMask) {
-  int signo = GetParam();
-  // Create the signalfd matching nothing.
-  sigset_t mask;
-  sigemptyset(&mask);
-  FileDescriptor fd =
-      ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_NONBLOCK));
-
-  // Block and deliver a signal.
-  const auto scoped_sigmask =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo));
-  ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds());
-
-  // We should have nothing.
-  struct signalfd_siginfo rbuf;
-  ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallFailsWithErrno(EWOULDBLOCK));
-
-  // Change the signal mask.
-  sigaddset(&mask, signo);
-  ASSERT_THAT(signalfd(fd.get(), &mask, 0), SyscallSucceeds());
-
-  // We should now have the signal.
-  ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallSucceedsWithValue(sizeof(rbuf)));
-  EXPECT_EQ(rbuf.ssi_signo, signo);
-}
-
-TEST_P(SignalfdTest, Poll) {
-  int signo = GetParam();
-  // Create the signalfd.
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, signo);
-  FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0));
-
-  // Block the signal, and start a thread to deliver it.
-  const auto scoped_sigmask =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo));
-  pid_t orig_tid = gettid();
-  ScopedThread t([&] {
-    absl::SleepFor(absl::Seconds(5));
-    ASSERT_THAT(tgkill(getpid(), orig_tid, signo), SyscallSucceeds());
-  });
-
-  // Start polling for the signal. We expect that it is not available at the
-  // outset, but then becomes available when the signal is sent. We give a
-  // timeout of 10000ms (or the delay above + 5 seconds of additional grace
-  // time).
-  struct pollfd poll_fd = {fd.get(), POLLIN, 0};
-  EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000),
-              SyscallSucceedsWithValue(1));
-
-  // Actually read the signal to prevent delivery.
-  struct signalfd_siginfo rbuf;
-  EXPECT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)),
-              SyscallSucceedsWithValue(sizeof(rbuf)));
-}
-
-std::string PrintSigno(::testing::TestParamInfo<int> info) {
-  switch (info.param) {
-    case kSigno:
-      return "kSigno";
-    case kSignoMax:
-      return "kSignoMax";
-    default:
-      return absl::StrCat(info.param);
-  }
-}
-INSTANTIATE_TEST_SUITE_P(Signalfd, SignalfdTest,
-                         ::testing::Values(kSigno, kSignoMax), PrintSigno);
-
-TEST(Signalfd, Ppoll) {
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, SIGKILL);
-  FileDescriptor fd =
-      ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_CLOEXEC));
-
-  // Ensure that the given ppoll blocks.
-  struct pollfd pfd = {};
-  pfd.fd = fd.get();
-  pfd.events = POLLIN;
-  struct timespec timeout = {};
-  timeout.tv_sec = 1;
-  EXPECT_THAT(RetryEINTR(ppoll)(&pfd, 1, &timeout, &mask),
-              SyscallSucceedsWithValue(0));
-}
-
-TEST(Signalfd, KillStillKills) {
-  sigset_t mask;
-  sigemptyset(&mask);
-  sigaddset(&mask, SIGKILL);
-  FileDescriptor fd =
-      ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_CLOEXEC));
-
-  // Just because there is a signalfd, we shouldn't see any change in behavior
-  // for unblockable signals. It's easier to test this with SIGKILL.
-  const auto scoped_sigmask =
-      ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, SIGKILL));
-  EXPECT_EXIT(tgkill(getpid(), gettid(), SIGKILL), KilledBySignal(SIGKILL), "");
-}
-
-}  // namespace
-
-}  // namespace testing
-}  // namespace gvisor
-
-int main(int argc, char** argv) {
-  // These tests depend on delivering signals. Block them up front so that all
-  // other threads created by TestInit will also have them blocked, and they
-  // will not interface with the rest of the test.
-  sigset_t set;
-  sigemptyset(&set);
-  sigaddset(&set, gvisor::testing::kSigno);
-  sigaddset(&set, gvisor::testing::kSignoMax);
-  sigaddset(&set, gvisor::testing::kSignoAlt);
-  TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0);
-
-  gvisor::testing::TestInit(&argc, &argv);
-
-  return gvisor::testing::RunAllTests();
-}