1 files changed, 0 insertions, 432 deletions
diff --git a/test/syscalls/linux/epoll.cc b/test/syscalls/linux/epoll.cc
deleted file mode 100644
index a4f8f3cec..000000000
--- a/test/syscalls/linux/epoll.cc
+++ /dev/null
@@ -1,432 +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 <errno.h>
-#include <limits.h>
-#include <pthread.h>
-#include <signal.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/epoll.h>
-#include <sys/eventfd.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "gtest/gtest.h"
-#include "test/util/epoll_util.h"
-#include "test/util/eventfd_util.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/posix_error.h"
-#include "test/util/test_util.h"
-
-namespace gvisor {
-namespace testing {
-
-namespace {
-
-constexpr int kFDsPerEpoll = 3;
-constexpr uint64_t kMagicConstant = 0x0102030405060708;
-
-uint64_t ms_elapsed(const struct timespec* begin, const struct timespec* end) {
-  return (end->tv_sec - begin->tv_sec) * 1000 +
-         (end->tv_nsec - begin->tv_nsec) / 1000000;
-}
-
-TEST(EpollTest, AllWritable) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(),
-                                    EPOLLIN | EPOLLOUT, kMagicConstant + i));
-  }
-
-  struct epoll_event result[kFDsPerEpoll];
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(kFDsPerEpoll));
-  // TODO(edahlgren): Why do some tests check epoll_event::data, and others
-  // don't? Does Linux actually guarantee that, in any of these test cases,
-  // epoll_wait will necessarily write out the epoll_events in the order that
-  // they were registered?
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    ASSERT_EQ(result[i].events, EPOLLOUT);
-  }
-}
-
-TEST(EpollTest, LastReadable) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(),
-                                    EPOLLIN | EPOLLOUT, kMagicConstant + i));
-  }
-
-  uint64_t tmp = 1;
-  ASSERT_THAT(WriteFd(eventfds[kFDsPerEpoll - 1].get(), &tmp, sizeof(tmp)),
-              SyscallSucceedsWithValue(sizeof(tmp)));
-
-  struct epoll_event result[kFDsPerEpoll];
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(kFDsPerEpoll));
-
-  int i;
-  for (i = 0; i < kFDsPerEpoll - 1; i++) {
-    EXPECT_EQ(result[i].events, EPOLLOUT);
-  }
-  EXPECT_EQ(result[i].events, EPOLLOUT | EPOLLIN);
-  EXPECT_EQ(result[i].data.u64, kMagicConstant + i);
-}
-
-TEST(EpollTest, LastNonWritable) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(),
-                                    EPOLLIN | EPOLLOUT, kMagicConstant + i));
-  }
-
-  // Write the maximum value to the event fd so that writing to it again would
-  // block.
-  uint64_t tmp = ULLONG_MAX - 1;
-  ASSERT_THAT(WriteFd(eventfds[kFDsPerEpoll - 1].get(), &tmp, sizeof(tmp)),
-              SyscallSucceedsWithValue(sizeof(tmp)));
-
-  struct epoll_event result[kFDsPerEpoll];
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(kFDsPerEpoll));
-
-  int i;
-  for (i = 0; i < kFDsPerEpoll - 1; i++) {
-    EXPECT_EQ(result[i].events, EPOLLOUT);
-  }
-  EXPECT_EQ(result[i].events, EPOLLIN);
-  EXPECT_THAT(ReadFd(eventfds[kFDsPerEpoll - 1].get(), &tmp, sizeof(tmp)),
-              sizeof(tmp));
-  EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(kFDsPerEpoll));
-
-  for (i = 0; i < kFDsPerEpoll; i++) {
-    EXPECT_EQ(result[i].events, EPOLLOUT);
-  }
-}
-
-TEST(EpollTest, Timeout_NoRandomSave) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN,
-                                    kMagicConstant + i));
-  }
-
-  constexpr int kTimeoutMs = 200;
-  struct timespec begin;
-  struct timespec end;
-  struct epoll_event result[kFDsPerEpoll];
-
-  {
-    const DisableSave ds;  // Timing-related.
-    EXPECT_THAT(clock_gettime(CLOCK_MONOTONIC, &begin), SyscallSucceeds());
-
-    ASSERT_THAT(
-        RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, kTimeoutMs),
-        SyscallSucceedsWithValue(0));
-    EXPECT_THAT(clock_gettime(CLOCK_MONOTONIC, &end), SyscallSucceeds());
-  }
-
-  // Check the lower bound on the timeout.  Checking for an upper bound is
-  // fragile because Linux can overrun the timeout due to scheduling delays.
-  EXPECT_GT(ms_elapsed(&begin, &end), kTimeoutMs - 1);
-}
-
-void* writer(void* arg) {
-  int fd = *reinterpret_cast<int*>(arg);
-  uint64_t tmp = 1;
-
-  usleep(200000);
-  if (WriteFd(fd, &tmp, sizeof(tmp)) != sizeof(tmp)) {
-    fprintf(stderr, "writer failed: errno %s\n", strerror(errno));
-  }
-
-  return nullptr;
-}
-
-TEST(EpollTest, WaitThenUnblock) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN,
-                                    kMagicConstant + i));
-  }
-
-  // Fire off a thread that will make at least one of the event fds readable.
-  pthread_t thread;
-  int make_readable = eventfds[0].get();
-  ASSERT_THAT(pthread_create(&thread, nullptr, writer, &make_readable),
-              SyscallSucceedsWithValue(0));
-
-  struct epoll_event result[kFDsPerEpoll];
-  EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(1));
-  EXPECT_THAT(pthread_detach(thread), SyscallSucceeds());
-}
-
-void sighandler(int s) {}
-
-void* signaler(void* arg) {
-  pthread_t* t = reinterpret_cast<pthread_t*>(arg);
-  // Repeatedly send the real-time signal until we are detached, because it's
-  // difficult to know exactly when epoll_wait on another thread (which this
-  // is intending to interrupt) has started blocking.
-  while (1) {
-    usleep(200000);
-    pthread_kill(*t, SIGRTMIN);
-  }
-  return nullptr;
-}
-
-TEST(EpollTest, UnblockWithSignal) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN,
-                                    kMagicConstant + i));
-  }
-
-  signal(SIGRTMIN, sighandler);
-  // Unblock the real time signals that InitGoogle blocks :(
-  sigset_t unblock;
-  sigemptyset(&unblock);
-  sigaddset(&unblock, SIGRTMIN);
-  ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &unblock, nullptr), SyscallSucceeds());
-
-  pthread_t thread;
-  pthread_t cur = pthread_self();
-  ASSERT_THAT(pthread_create(&thread, nullptr, signaler, &cur),
-              SyscallSucceedsWithValue(0));
-
-  struct epoll_event result[kFDsPerEpoll];
-  EXPECT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallFailsWithErrno(EINTR));
-  EXPECT_THAT(pthread_cancel(thread), SyscallSucceeds());
-  EXPECT_THAT(pthread_detach(thread), SyscallSucceeds());
-}
-
-TEST(EpollTest, TimeoutNoFds) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  struct epoll_event result[kFDsPerEpoll];
-  EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100),
-              SyscallSucceedsWithValue(0));
-}
-
-struct addr_ctx {
-  int epollfd;
-  int eventfd;
-};
-
-void* fd_adder(void* arg) {
-  struct addr_ctx* actx = reinterpret_cast<struct addr_ctx*>(arg);
-  struct epoll_event event;
-  event.events = EPOLLIN | EPOLLOUT;
-  event.data.u64 = 0xdeadbeeffacefeed;
-
-  usleep(200000);
-  if (epoll_ctl(actx->epollfd, EPOLL_CTL_ADD, actx->eventfd, &event) == -1) {
-    fprintf(stderr, "epoll_ctl failed: %s\n", strerror(errno));
-  }
-
-  return nullptr;
-}
-
-TEST(EpollTest, UnblockWithNewFD) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD());
-
-  pthread_t thread;
-  struct addr_ctx actx = {epollfd.get(), eventfd.get()};
-  ASSERT_THAT(pthread_create(&thread, nullptr, fd_adder, &actx),
-              SyscallSucceedsWithValue(0));
-
-  struct epoll_event result[kFDsPerEpoll];
-  // Wait while no FDs are ready, but after 200ms fd_adder will add a ready FD
-  // to epoll which will wake us up.
-  EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(1));
-  EXPECT_THAT(pthread_detach(thread), SyscallSucceeds());
-  EXPECT_EQ(result[0].data.u64, 0xdeadbeeffacefeed);
-}
-
-TEST(EpollTest, Oneshot) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  std::vector<FileDescriptor> eventfds;
-  for (int i = 0; i < kFDsPerEpoll; i++) {
-    eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()));
-    ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN,
-                                    kMagicConstant + i));
-  }
-
-  struct epoll_event event;
-  event.events = EPOLLOUT | EPOLLONESHOT;
-  event.data.u64 = kMagicConstant;
-  ASSERT_THAT(
-      epoll_ctl(epollfd.get(), EPOLL_CTL_MOD, eventfds[0].get(), &event),
-      SyscallSucceeds());
-
-  struct epoll_event result[kFDsPerEpoll];
-  // One-shot entry means that the first epoll_wait should succeed.
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(1));
-  EXPECT_EQ(result[0].data.u64, kMagicConstant);
-
-  // One-shot entry means that the second epoll_wait should timeout.
-  EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100),
-              SyscallSucceedsWithValue(0));
-}
-
-TEST(EpollTest, EdgeTriggered_NoRandomSave) {
-  // Test edge-triggered entry: make it edge-triggered, first wait should
-  // return it, second one should time out, make it writable again, third wait
-  // should return it, fourth wait should timeout.
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD());
-  ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfd.get(),
-                                  EPOLLOUT | EPOLLET, kMagicConstant));
-
-  struct epoll_event result[kFDsPerEpoll];
-
-  {
-    const DisableSave ds;  // May trigger spurious event.
-
-    // Edge-triggered entry means that the first epoll_wait should return the
-    // event.
-    ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, -1),
-                SyscallSucceedsWithValue(1));
-    EXPECT_EQ(result[0].data.u64, kMagicConstant);
-
-    // Edge-triggered entry means that the second epoll_wait should time out.
-    ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, 100),
-                SyscallSucceedsWithValue(0));
-  }
-
-  uint64_t tmp = ULLONG_MAX - 1;
-
-  // Make an fd non-writable.
-  ASSERT_THAT(WriteFd(eventfd.get(), &tmp, sizeof(tmp)),
-              SyscallSucceedsWithValue(sizeof(tmp)));
-
-  // Make the same fd non-writable to trigger a change, which will trigger an
-  // edge-triggered event.
-  ASSERT_THAT(ReadFd(eventfd.get(), &tmp, sizeof(tmp)),
-              SyscallSucceedsWithValue(sizeof(tmp)));
-
-  {
-    const DisableSave ds;  // May trigger spurious event.
-
-    // An edge-triggered event should now be returned.
-    ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, -1),
-                SyscallSucceedsWithValue(1));
-    EXPECT_EQ(result[0].data.u64, kMagicConstant);
-
-    // The edge-triggered event had been consumed above, we don't expect to
-    // get it again.
-    ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, 100),
-                SyscallSucceedsWithValue(0));
-  }
-}
-
-TEST(EpollTest, OneshotAndEdgeTriggered) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD());
-  ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfd.get(),
-                                  EPOLLOUT | EPOLLET | EPOLLONESHOT,
-                                  kMagicConstant));
-
-  struct epoll_event result[kFDsPerEpoll];
-  // First time one shot edge-triggered entry means that epoll_wait should
-  // return the event.
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(1));
-  EXPECT_EQ(result[0].data.u64, kMagicConstant);
-
-  // Edge-triggered entry means that the second epoll_wait should time out.
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100),
-              SyscallSucceedsWithValue(0));
-
-  uint64_t tmp = ULLONG_MAX - 1;
-  // Make an fd non-writable.
-  ASSERT_THAT(WriteFd(eventfd.get(), &tmp, sizeof(tmp)),
-              SyscallSucceedsWithValue(sizeof(tmp)));
-  // Make the same fd non-writable to trigger a change, which will not trigger
-  // an edge-triggered event because we've also included EPOLLONESHOT.
-  ASSERT_THAT(ReadFd(eventfd.get(), &tmp, sizeof(tmp)),
-              SyscallSucceedsWithValue(sizeof(tmp)));
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100),
-              SyscallSucceedsWithValue(0));
-}
-
-TEST(EpollTest, CycleOfOneDisallowed) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-
-  struct epoll_event event;
-  event.events = EPOLLOUT;
-  event.data.u64 = kMagicConstant;
-
-  ASSERT_THAT(epoll_ctl(epollfd.get(), EPOLL_CTL_ADD, epollfd.get(), &event),
-              SyscallFailsWithErrno(EINVAL));
-}
-
-TEST(EpollTest, CycleOfThreeDisallowed) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  auto epollfd1 = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  auto epollfd2 = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-
-  ASSERT_NO_ERRNO(
-      RegisterEpollFD(epollfd.get(), epollfd1.get(), EPOLLIN, kMagicConstant));
-  ASSERT_NO_ERRNO(
-      RegisterEpollFD(epollfd1.get(), epollfd2.get(), EPOLLIN, kMagicConstant));
-
-  struct epoll_event event;
-  event.events = EPOLLIN;
-  event.data.u64 = kMagicConstant;
-  EXPECT_THAT(epoll_ctl(epollfd2.get(), EPOLL_CTL_ADD, epollfd.get(), &event),
-              SyscallFailsWithErrno(ELOOP));
-}
-
-TEST(EpollTest, CloseFile) {
-  auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD());
-  auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD());
-  ASSERT_NO_ERRNO(
-      RegisterEpollFD(epollfd.get(), eventfd.get(), EPOLLOUT, kMagicConstant));
-
-  struct epoll_event result[kFDsPerEpoll];
-  ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1),
-              SyscallSucceedsWithValue(1));
-  EXPECT_EQ(result[0].data.u64, kMagicConstant);
-
-  // Close the event fd early.
-  eventfd.reset();
-
-  EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100),
-              SyscallSucceedsWithValue(0));
-}
-
-}  // namespace
-
-}  // namespace testing
-}  // namespace gvisor