Nuke the sandbox

1 files changed, 0 insertions, 626 deletions

diff --git a/security/sandbox/linux/gtest/TestBroker.cpp b/security/sandbox/linux/gtest/TestBroker.cpp
deleted file mode 100644
index a311e181a..000000000
--- a/security/sandbox/linux/gtest/TestBroker.cpp
+++ /dev/null
@@ -1,626 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "gtest/gtest.h"
-
-#include "broker/SandboxBroker.h"
-#include "broker/SandboxBrokerUtils.h"
-#include "SandboxBrokerClient.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <stdlib.h>
-#include <sched.h>
-#include <semaphore.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "mozilla/Atomics.h"
-#include "mozilla/NullPtr.h"
-#include "mozilla/PodOperations.h"
-#include "mozilla/UniquePtr.h"
-#include "mozilla/ipc/FileDescriptor.h"
-
-namespace mozilla {
-
-static const int MAY_ACCESS = SandboxBroker::MAY_ACCESS;
-static const int MAY_READ = SandboxBroker::MAY_READ;
-static const int MAY_WRITE = SandboxBroker::MAY_WRITE;
-static const int MAY_CREATE = SandboxBroker::MAY_CREATE;
-static const auto AddAlways = SandboxBroker::Policy::AddAlways;
-
-class SandboxBrokerTest : public ::testing::Test
-{
-  UniquePtr<SandboxBroker> mServer;
-  UniquePtr<SandboxBrokerClient> mClient;
-
-  UniquePtr<const SandboxBroker::Policy> GetPolicy() const;
-
-  template<class C, void (C::* Main)()>
-  static void* ThreadMain(void* arg) {
-    (static_cast<C*>(arg)->*Main)();
-    return nullptr;
-  }
-
-protected:
-  int Open(const char* aPath, int aFlags) {
-    return mClient->Open(aPath, aFlags);
-  }
-  int Access(const char* aPath, int aMode) {
-    return mClient->Access(aPath, aMode);
-  }
-  int Stat(const char* aPath, statstruct* aStat) {
-    return mClient->Stat(aPath, aStat);
-  }
-  int LStat(const char* aPath, statstruct* aStat) {
-    return mClient->LStat(aPath, aStat);
-  }
-  int Chmod(const char* aPath, int aMode) {
-    return mClient->Chmod(aPath, aMode);
-  }
-  int Link(const char* aPath, const char* bPath) {
-    return mClient->Link(aPath, bPath);
-  }
-  int Mkdir(const char* aPath, int aMode) {
-    return mClient->Mkdir(aPath, aMode);
-  }
-  int Symlink(const char* aPath, const char* bPath) {
-    return mClient->Symlink(aPath, bPath);
-  }
-  int Rename(const char* aPath, const char* bPath) {
-    return mClient->Rename(aPath, bPath);
-  }
-  int Rmdir(const char* aPath) {
-    return mClient->Rmdir(aPath);
-  }
-  int Unlink(const char* aPath) {
-    return mClient->Unlink(aPath);
-  }
-  ssize_t Readlink(const char* aPath, char* aBuff, size_t aSize) {
-    return mClient->Readlink(aPath, aBuff, aSize);
-  }
-
-  virtual void SetUp() {
-    ipc::FileDescriptor fd;
-
-    mServer = SandboxBroker::Create(GetPolicy(), getpid(), fd);
-    ASSERT_NE(mServer, nullptr);
-    ASSERT_TRUE(fd.IsValid());
-    auto rawFD = fd.ClonePlatformHandle();
-    mClient.reset(new SandboxBrokerClient(rawFD.release()));
-  }
-
-  template<class C, void (C::* Main)()>
-  void StartThread(pthread_t *aThread) {
-    ASSERT_EQ(0, pthread_create(aThread, nullptr, ThreadMain<C, Main>,
-                                static_cast<C*>(this)));
-  }
-
-  template<class C, void (C::* Main)()>
-  void RunOnManyThreads() {
-    static const int kNumThreads = 5;
-    pthread_t threads[kNumThreads];
-    for (int i = 0; i < kNumThreads; ++i) {
-      StartThread<C, Main>(&threads[i]);
-    }
-    for (int i = 0; i < kNumThreads; ++i) {
-      void* retval;
-      ASSERT_EQ(pthread_join(threads[i], &retval), 0);
-      ASSERT_EQ(retval, static_cast<void*>(nullptr));
-    }
-  }
-
-public:
-  void MultiThreadOpenWorker();
-  void MultiThreadStatWorker();
-};
-
-UniquePtr<const SandboxBroker::Policy>
-SandboxBrokerTest::GetPolicy() const
-{
-  UniquePtr<SandboxBroker::Policy> policy(new SandboxBroker::Policy());
-
-  policy->AddPath(MAY_READ | MAY_WRITE, "/dev/null", AddAlways);
-  policy->AddPath(MAY_READ, "/dev/zero", AddAlways);
-  policy->AddPath(MAY_READ, "/var/empty/qwertyuiop", AddAlways);
-  policy->AddPath(MAY_ACCESS, "/proc/self", AddAlways); // Warning: Linux-specific.
-  policy->AddPath(MAY_READ | MAY_WRITE, "/tmp", AddAlways);
-  policy->AddPath(MAY_READ | MAY_WRITE | MAY_CREATE, "/tmp/blublu", AddAlways);
-  policy->AddPath(MAY_READ | MAY_WRITE | MAY_CREATE, "/tmp/blublublu", AddAlways);
-
-  return Move(policy);
-}
-
-TEST_F(SandboxBrokerTest, OpenForRead)
-{
-  int fd;
-
-  fd = Open("/dev/null", O_RDONLY);
-  ASSERT_GE(fd, 0) << "Opening /dev/null failed.";
-  close(fd);
-  fd = Open("/dev/zero", O_RDONLY);
-  ASSERT_GE(fd, 0) << "Opening /dev/zero failed.";
-  close(fd);
-  fd = Open("/var/empty/qwertyuiop", O_RDONLY);
-  EXPECT_EQ(-ENOENT, fd) << "Opening allowed but nonexistent file succeeded.";
-  fd = Open("/proc/self", O_RDONLY);
-  EXPECT_EQ(-EACCES, fd) << "Opening stat-only file for read succeeded.";
-  fd = Open("/proc/self/stat", O_RDONLY);
-  EXPECT_EQ(-EACCES, fd) << "Opening disallowed file succeeded.";
-}
-
-TEST_F(SandboxBrokerTest, OpenForWrite)
-{
-  int fd;
-
-  fd = Open("/dev/null", O_WRONLY);
-  ASSERT_GE(fd, 0) << "Opening /dev/null write-only failed.";
-  close(fd);
-  fd = Open("/dev/null", O_RDWR);
-  ASSERT_GE(fd, 0) << "Opening /dev/null read/write failed.";
-  close(fd);
-  fd = Open("/dev/zero", O_WRONLY);
-  ASSERT_EQ(-EACCES, fd) << "Opening read-only-by-policy file write-only succeeded.";
-  fd = Open("/dev/zero", O_RDWR);
-  ASSERT_EQ(-EACCES, fd) << "Opening read-only-by-policy file read/write succeeded.";
-}
-
-TEST_F(SandboxBrokerTest, SimpleRead)
-{
-  int fd;
-  char c;
-
-  fd = Open("/dev/null", O_RDONLY);
-  ASSERT_GE(fd, 0);
-  EXPECT_EQ(0, read(fd, &c, 1));
-  close(fd);
-  fd = Open("/dev/zero", O_RDONLY);
-  ASSERT_GE(fd, 0);
-  ASSERT_EQ(1, read(fd, &c, 1));
-  EXPECT_EQ(c, '\0');
-}
-
-TEST_F(SandboxBrokerTest, Access)
-{
-  EXPECT_EQ(0, Access("/dev/null", F_OK));
-  EXPECT_EQ(0, Access("/dev/null", R_OK));
-  EXPECT_EQ(0, Access("/dev/null", W_OK));
-  EXPECT_EQ(0, Access("/dev/null", R_OK|W_OK));
-  EXPECT_EQ(-EACCES, Access("/dev/null", X_OK));
-  EXPECT_EQ(-EACCES, Access("/dev/null", R_OK|X_OK));
-
-  EXPECT_EQ(0, Access("/dev/zero", R_OK));
-  EXPECT_EQ(-EACCES, Access("/dev/zero", W_OK));
-  EXPECT_EQ(-EACCES, Access("/dev/zero", R_OK|W_OK));
-
-  EXPECT_EQ(-ENOENT, Access("/var/empty/qwertyuiop", R_OK));
-  EXPECT_EQ(-EACCES, Access("/var/empty/qwertyuiop", W_OK));
-
-  EXPECT_EQ(0, Access("/proc/self", F_OK));
-  EXPECT_EQ(-EACCES, Access("/proc/self", R_OK));
-
-  EXPECT_EQ(-EACCES, Access("/proc/self/stat", F_OK));
-}
-
-TEST_F(SandboxBrokerTest, Stat)
-{
-  statstruct realStat, brokeredStat;
-  ASSERT_EQ(0, statsyscall("/dev/null", &realStat)) << "Shouldn't ever fail!";
-  EXPECT_EQ(0, Stat("/dev/null", &brokeredStat));
-  EXPECT_EQ(realStat.st_ino, brokeredStat.st_ino);
-  EXPECT_EQ(realStat.st_rdev, brokeredStat.st_rdev);
-
-  EXPECT_EQ(-ENOENT, Stat("/var/empty/qwertyuiop", &brokeredStat));
-  EXPECT_EQ(-EACCES, Stat("/dev", &brokeredStat));
-
-  EXPECT_EQ(0, Stat("/proc/self", &brokeredStat));
-  EXPECT_TRUE(S_ISDIR(brokeredStat.st_mode));
-}
-
-TEST_F(SandboxBrokerTest, LStat)
-{
-  statstruct realStat, brokeredStat;
-  ASSERT_EQ(0, lstatsyscall("/dev/null", &realStat));
-  EXPECT_EQ(0, LStat("/dev/null", &brokeredStat));
-  EXPECT_EQ(realStat.st_ino, brokeredStat.st_ino);
-  EXPECT_EQ(realStat.st_rdev, brokeredStat.st_rdev);
-
-  EXPECT_EQ(-ENOENT, LStat("/var/empty/qwertyuiop", &brokeredStat));
-  EXPECT_EQ(-EACCES, LStat("/dev", &brokeredStat));
-
-  EXPECT_EQ(0, LStat("/proc/self", &brokeredStat));
-  EXPECT_TRUE(S_ISLNK(brokeredStat.st_mode));
-}
-
-static void PrePostTestCleanup(void)
-{
-  unlink("/tmp/blublu");
-  rmdir("/tmp/blublu");
-  unlink("/tmp/nope");
-  rmdir("/tmp/nope");
-  unlink("/tmp/blublublu");
-  rmdir("/tmp/blublublu");
-}
-
-TEST_F(SandboxBrokerTest, Chmod)
-{
-  PrePostTestCleanup();
-
-  int fd = Open("/tmp/blublu", O_WRONLY | O_CREAT);
-  ASSERT_GE(fd, 0) << "Opening /tmp/blublu for writing failed.";
-  close(fd);
-  // Set read only. SandboxBroker enforces 0600 mode flags.
-  ASSERT_EQ(0, Chmod("/tmp/blublu", S_IRUSR));
-  // SandboxBroker doesn't use real access(), it just checks against
-  // the policy. So it can't see the change in permisions here.
-  // This won't work:
-  // EXPECT_EQ(-EACCES, Access("/tmp/blublu", W_OK));
-  statstruct realStat;
-  EXPECT_EQ(0, statsyscall("/tmp/blublu", &realStat));
-  EXPECT_EQ((mode_t)S_IRUSR, realStat.st_mode & 0777);
-
-  ASSERT_EQ(0, Chmod("/tmp/blublu", S_IRUSR | S_IWUSR));
-  EXPECT_EQ(0, statsyscall("/tmp/blublu", &realStat));
-  EXPECT_EQ((mode_t)(S_IRUSR | S_IWUSR), realStat.st_mode & 0777);
-  EXPECT_EQ(0, unlink("/tmp/blublu"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Link)
-{
-  PrePostTestCleanup();
-
-  int fd = Open("/tmp/blublu", O_WRONLY | O_CREAT);
-  ASSERT_GE(fd, 0) << "Opening /tmp/blublu for writing failed.";
-  close(fd);
-  ASSERT_EQ(0, Link("/tmp/blublu", "/tmp/blublublu"));
-  EXPECT_EQ(0, Access("/tmp/blublublu", F_OK));
-  // Not whitelisted target path
-  EXPECT_EQ(-EACCES, Link("/tmp/blublu", "/tmp/nope"));
-  EXPECT_EQ(0, unlink("/tmp/blublublu"));
-  EXPECT_EQ(0, unlink("/tmp/blublu"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Symlink)
-{
-  PrePostTestCleanup();
-
-  int fd = Open("/tmp/blublu", O_WRONLY | O_CREAT);
-  ASSERT_GE(fd, 0) << "Opening /tmp/blublu for writing failed.";
-  close(fd);
-  ASSERT_EQ(0, Symlink("/tmp/blublu", "/tmp/blublublu"));
-  EXPECT_EQ(0, Access("/tmp/blublublu", F_OK));
-  statstruct aStat;
-  ASSERT_EQ(0, lstatsyscall("/tmp/blublublu", &aStat));
-  EXPECT_EQ((mode_t)S_IFLNK, aStat.st_mode & S_IFMT);
-  // Not whitelisted target path
-  EXPECT_EQ(-EACCES, Symlink("/tmp/blublu", "/tmp/nope"));
-  EXPECT_EQ(0, unlink("/tmp/blublublu"));
-  EXPECT_EQ(0, unlink("/tmp/blublu"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Mkdir)
-{
-  PrePostTestCleanup();
-
-  ASSERT_EQ(0, mkdir("/tmp/blublu", 0600))
-    << "Creating dir /tmp/blublu failed.";
-  EXPECT_EQ(0, Access("/tmp/blublu", F_OK));
-  // Not whitelisted target path
-  EXPECT_EQ(-EACCES, Mkdir("/tmp/nope", 0600))
-    << "Creating dir without MAY_CREATE succeed.";
-  EXPECT_EQ(0, rmdir("/tmp/blublu"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Rename)
-{
-  PrePostTestCleanup();
-
-  ASSERT_EQ(0, mkdir("/tmp/blublu", 0600))
-    << "Creating dir /tmp/blublu failed.";
-  EXPECT_EQ(0, Access("/tmp/blublu", F_OK));
-  ASSERT_EQ(0, Rename("/tmp/blublu", "/tmp/blublublu"));
-  EXPECT_EQ(0, Access("/tmp/blublublu", F_OK));
-  EXPECT_EQ(-ENOENT , Access("/tmp/blublu", F_OK));
-  // Not whitelisted target path
-  EXPECT_EQ(-EACCES, Rename("/tmp/blublublu", "/tmp/nope"))
-    << "Renaming dir without write access succeed.";
-  EXPECT_EQ(0, rmdir("/tmp/blublublu"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Rmdir)
-{
-  PrePostTestCleanup();
-
-  ASSERT_EQ(0, mkdir("/tmp/blublu", 0600))
-    << "Creating dir /tmp/blublu failed.";
-  EXPECT_EQ(0, Access("/tmp/blublu", F_OK));
-  ASSERT_EQ(0, Rmdir("/tmp/blublu"));
-  EXPECT_EQ(-ENOENT, Access("/tmp/blublu", F_OK));
-  // Bypass sandbox to create a non-deletable dir
-  ASSERT_EQ(0, mkdir("/tmp/nope", 0600));
-  EXPECT_EQ(-EACCES, Rmdir("/tmp/nope"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Unlink)
-{
-  PrePostTestCleanup();
-
-  int fd = Open("/tmp/blublu", O_WRONLY | O_CREAT);
-  ASSERT_GE(fd, 0) << "Opening /tmp/blublu for writing failed.";
-  close(fd);
-  EXPECT_EQ(0, Access("/tmp/blublu", F_OK));
-  EXPECT_EQ(0, Unlink("/tmp/blublu"));
-  EXPECT_EQ(-ENOENT , Access("/tmp/blublu", F_OK));
-  // Bypass sandbox to write a non-deletable file
-  fd = open("/tmp/nope", O_WRONLY | O_CREAT, 0600);
-  ASSERT_GE(fd, 0) << "Opening /tmp/nope for writing failed.";
-  close(fd);
-  EXPECT_EQ(-EACCES, Unlink("/tmp/nope"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, Readlink)
-{
-  PrePostTestCleanup();
-
-  int fd = Open("/tmp/blublu", O_WRONLY | O_CREAT);
-  ASSERT_GE(fd, 0) << "Opening /tmp/blublu for writing failed.";
-  close(fd);
-  ASSERT_EQ(0, Symlink("/tmp/blublu", "/tmp/blublublu"));
-  EXPECT_EQ(0, Access("/tmp/blublublu", F_OK));
-  char linkBuff[256];
-  EXPECT_EQ(11, Readlink("/tmp/blublublu", linkBuff, sizeof(linkBuff)));
-  linkBuff[11] = '\0';
-  EXPECT_EQ(0, strcmp(linkBuff, "/tmp/blublu"));
-
-  PrePostTestCleanup();
-}
-
-TEST_F(SandboxBrokerTest, MultiThreadOpen) {
-  RunOnManyThreads<SandboxBrokerTest,
-                   &SandboxBrokerTest::MultiThreadOpenWorker>();
-}
-void SandboxBrokerTest::MultiThreadOpenWorker() {
-  static const int kNumLoops = 10000;
-
-  for (int i = 1; i <= kNumLoops; ++i) {
-    int nullfd = Open("/dev/null", O_RDONLY);
-    int zerofd = Open("/dev/zero", O_RDONLY);
-    ASSERT_GE(nullfd, 0) << "Loop " << i << "/" << kNumLoops;
-    ASSERT_GE(zerofd, 0) << "Loop " << i << "/" << kNumLoops;
-    char c;
-    ASSERT_EQ(0, read(nullfd, &c, 1)) << "Loop " << i << "/" << kNumLoops;
-    ASSERT_EQ(1, read(zerofd, &c, 1)) << "Loop " << i << "/" << kNumLoops;
-    ASSERT_EQ('\0', c) << "Loop " << i << "/" << kNumLoops;
-    close(nullfd);
-    close(zerofd);
-  }
-}
-
-TEST_F(SandboxBrokerTest, MultiThreadStat) {
-  RunOnManyThreads<SandboxBrokerTest,
-                   &SandboxBrokerTest::MultiThreadStatWorker>();
-}
-void SandboxBrokerTest::MultiThreadStatWorker() {
-  static const int kNumLoops = 7500;
-  statstruct nullStat, zeroStat, selfStat;
-  dev_t realNullDev, realZeroDev;
-  ino_t realSelfInode;
-
-  ASSERT_EQ(0, statsyscall("/dev/null", &nullStat)) << "Shouldn't ever fail!";
-  ASSERT_EQ(0, statsyscall("/dev/zero", &zeroStat)) << "Shouldn't ever fail!";
-  ASSERT_EQ(0, lstatsyscall("/proc/self", &selfStat)) << "Shouldn't ever fail!";
-  ASSERT_TRUE(S_ISLNK(selfStat.st_mode)) << "Shouldn't ever fail!";
-  realNullDev = nullStat.st_rdev;
-  realZeroDev = zeroStat.st_rdev;
-  realSelfInode = selfStat.st_ino;
-  for (int i = 1; i <= kNumLoops; ++i) {
-    ASSERT_EQ(0, Stat("/dev/null", &nullStat))
-      << "Loop " << i << "/" << kNumLoops;
-    ASSERT_EQ(0, Stat("/dev/zero", &zeroStat))
-      << "Loop " << i << "/" << kNumLoops;
-    ASSERT_EQ(0, LStat("/proc/self", &selfStat))
-      << "Loop " << i << "/" << kNumLoops;
-
-    ASSERT_EQ(realNullDev, nullStat.st_rdev)
-      << "Loop " << i << "/" << kNumLoops;
-    ASSERT_EQ(realZeroDev, zeroStat.st_rdev)
-      << "Loop " << i << "/" << kNumLoops;
-    ASSERT_TRUE(S_ISLNK(selfStat.st_mode))
-      << "Loop " << i << "/" << kNumLoops;
-    ASSERT_EQ(realSelfInode, selfStat.st_ino)
-      << "Loop " << i << "/" << kNumLoops;
-  }
-}
-
-#if 0
-class SandboxBrokerSigStress : public SandboxBrokerTest
-{
-  int mSigNum;
-  struct sigaction mOldAction;
-  Atomic<void*> mVoidPtr;
-
-  static void SigHandler(int aSigNum, siginfo_t* aSigInfo, void *aCtx) {
-    ASSERT_EQ(SI_QUEUE, aSigInfo->si_code);
-    SandboxBrokerSigStress* that =
-      static_cast<SandboxBrokerSigStress*>(aSigInfo->si_value.sival_ptr);
-    ASSERT_EQ(that->mSigNum, aSigNum);
-    that->DoSomething();
-  }
-
-protected:
-  Atomic<int> mTestIter;
-  sem_t mSemaphore;
-
-  void SignalThread(pthread_t aThread) {
-    union sigval sv;
-    sv.sival_ptr = this;
-    ASSERT_NE(0, mSigNum);
-    ASSERT_EQ(0, pthread_sigqueue(aThread, mSigNum, sv));
-  }
-
-  virtual void SetUp() {
-    ASSERT_EQ(0, sem_init(&mSemaphore, 0, 0));
-    mVoidPtr = nullptr;
-    mSigNum = 0;
-    for (int sigNum = SIGRTMIN; sigNum < SIGRTMAX; ++sigNum) {
-      ASSERT_EQ(0, sigaction(sigNum, nullptr, &mOldAction));
-      if ((mOldAction.sa_flags & SA_SIGINFO) == 0 &&
-          mOldAction.sa_handler == SIG_DFL) {
-        struct sigaction newAction;
-        PodZero(&newAction);
-        newAction.sa_flags = SA_SIGINFO;
-        newAction.sa_sigaction = SigHandler;
-        ASSERT_EQ(0, sigaction(sigNum, &newAction, nullptr));
-        mSigNum = sigNum;
-        break;
-      }
-    }
-    ASSERT_NE(mSigNum, 0);
-
-    SandboxBrokerTest::SetUp();
-  }
-
-  virtual void TearDown() {
-    ASSERT_EQ(0, sem_destroy(&mSemaphore));
-    if (mSigNum != 0) {
-      ASSERT_EQ(0, sigaction(mSigNum, &mOldAction, nullptr));
-    }
-    if (mVoidPtr) {
-      free(mVoidPtr);
-    }
-  }
-
-  void DoSomething();
-
-public:
-  void MallocWorker();
-  void FreeWorker();
-};
-
-TEST_F(SandboxBrokerSigStress, StressTest)
-{
-  static const int kIters = 6250;
-  static const int kNsecPerIterPerIter = 4;
-  struct timespec delay = { 0, 0 };
-  pthread_t threads[2];
-
-  mTestIter = kIters;
-
-  StartThread<SandboxBrokerSigStress,
-              &SandboxBrokerSigStress::MallocWorker>(&threads[0]);
-  StartThread<SandboxBrokerSigStress,
-              &SandboxBrokerSigStress::FreeWorker>(&threads[1]);
-
-  for (int i = kIters; i > 0; --i) {
-    SignalThread(threads[i % 2]);
-    while (sem_wait(&mSemaphore) == -1 && errno == EINTR)
-      /* retry */;
-    ASSERT_EQ(i - 1, mTestIter);
-    delay.tv_nsec += kNsecPerIterPerIter;
-    struct timespec req = delay, rem;
-    while (nanosleep(&req, &rem) == -1 && errno == EINTR) {
-      req = rem;
-    }
-  }
-  void *retval;
-  ASSERT_EQ(0, pthread_join(threads[0], &retval));
-  ASSERT_EQ(nullptr, retval);
-  ASSERT_EQ(0, pthread_join(threads[1], &retval));
-  ASSERT_EQ(nullptr, retval);
-}
-
-void
-SandboxBrokerSigStress::MallocWorker()
-{
-  static const size_t kSize = 64;
-
-  void* mem = malloc(kSize);
-  while (mTestIter > 0) {
-    ASSERT_NE(mem, mVoidPtr);
-    mem = mVoidPtr.exchange(mem);
-    if (mem) {
-      sched_yield();
-    } else {
-      mem = malloc(kSize);
-    }
-  }
-  if (mem) {
-    free(mem);
-  }
-}
-
-void
-SandboxBrokerSigStress::FreeWorker()
-{
-  void *mem = nullptr;
-  while (mTestIter > 0) {
-    mem = mVoidPtr.exchange(mem);
-    if (mem) {
-      free(mem);
-      mem = nullptr;
-    } else {
-      sched_yield();
-    }
-  }
-}
-
-void
-SandboxBrokerSigStress::DoSomething()
-{
-  int fd;
-  char c;
-  struct stat st;
-
-  //fprintf(stderr, "Don't try this at home: %d\n", static_cast<int>(mTestIter));
-  switch (mTestIter % 5) {
-  case 0:
-    fd = Open("/dev/null", O_RDWR);
-    ASSERT_GE(fd, 0);
-    ASSERT_EQ(0, read(fd, &c, 1));
-    close(fd);
-    break;
-  case 1:
-    fd = Open("/dev/zero", O_RDONLY);
-    ASSERT_GE(fd, 0);
-    ASSERT_EQ(1, read(fd, &c, 1));
-    ASSERT_EQ('\0', c);
-    close(fd);
-    break;
-  case 2:
-    ASSERT_EQ(0, Access("/dev/null", W_OK));
-    break;
-  case 3:
-    ASSERT_EQ(0, Stat("/proc/self", &st));
-    ASSERT_TRUE(S_ISDIR(st.st_mode));
-    break;
-  case 4:
-    ASSERT_EQ(0, LStat("/proc/self", &st));
-    ASSERT_TRUE(S_ISLNK(st.st_mode));
-    break;
-  }
-  mTestIter--;
-  sem_post(&mSemaphore);
-}
-#endif
-
-} // namespace mozilla