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/* 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
#include "gtest/gtest.h"
#include <mach/mach.h>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#include "breakpad-client/mac/handler/exception_handler.h"
#include "mozilla/Assertions.h"
namespace {
// Waits for aPid for at most aTimeoutMs, returning true and filling aStatus if
// the process was reaped, false if we gave up waiting for it.
bool WaitForChild(pid_t aPid, int aTimeoutMs, int* aStatus) {
const int kPollIntervalMs = 50;
for (int elapsed = 0; elapsed < aTimeoutMs; elapsed += kPollIntervalMs) {
pid_t reaped = waitpid(aPid, aStatus, WNOHANG);
if (reaped == aPid) {
return true;
}
usleep(kPollIntervalMs * 1000);
}
return false;
}
} // namespace
bool DoNotWriteDump(void*) { return false; }
// A child process that inherits our exception ports but does not register its
// own exception handler must still be killed by the kernel when it crashes.
TEST(MacExceptionHandler, ChildWithoutHandlerGetsKilled)
{
google_breakpad::ExceptionHandler handler("/tmp", DoNotWriteDump, nullptr,
nullptr, /* install_handler */ true,
nullptr);
pid_t pid = fork();
ASSERT_NE(pid, -1);
if (pid == 0) {
MOZ_CRASH("Intentional crash for testing");
}
int status = 0;
bool reaped = WaitForChild(pid, /* aTimeoutMs */ 30000, &status);
if (!reaped) {
kill(pid, SIGKILL);
waitpid(pid, &status, 0);
}
ASSERT_TRUE(reaped)
<< "The crashing child process was never terminated";
ASSERT_TRUE(WIFSIGNALED(status));
EXPECT_TRUE(WTERMSIG(status) == SIGSEGV || WTERMSIG(status) == SIGBUS)
<< "Unexpected termination signal " << WTERMSIG(status);
}