From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- toolkit/profile/gtest/TestProfileLockRetry.cpp | 74 ++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 toolkit/profile/gtest/TestProfileLockRetry.cpp (limited to 'toolkit/profile/gtest/TestProfileLockRetry.cpp') diff --git a/toolkit/profile/gtest/TestProfileLockRetry.cpp b/toolkit/profile/gtest/TestProfileLockRetry.cpp new file mode 100644 index 0000000000..8301103493 --- /dev/null +++ b/toolkit/profile/gtest/TestProfileLockRetry.cpp @@ -0,0 +1,74 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 +#include + +#include "nsComponentManagerUtils.h" +#include "nsCOMPtr.h" +#include "nsIFile.h" +#include "nsProfileLock.h" +#include "nsString.h" + +TEST(ProfileLock, RetryLock) +{ + char templ[] = "/tmp/profilelocktest.XXXXXX"; + char* tmpdir = mkdtemp(templ); + ASSERT_NE(tmpdir, nullptr); + + nsProfileLock myLock; + nsProfileLock myLock2; + nsresult rv; + nsCOMPtr dir(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv)); + ASSERT_EQ(NS_SUCCEEDED(rv), true); + + rv = dir->InitWithNativePath(nsCString(tmpdir)); + ASSERT_EQ(NS_SUCCEEDED(rv), true); + + int eventfd_fd = eventfd(0, 0); + ASSERT_GE(eventfd_fd, 0); + + // fcntl advisory locks are per process, so it's hard + // to avoid using fork here. + pid_t childpid = fork(); + + if (childpid) { + // parent + + // blocking read causing us to lose the race + eventfd_t value; + EXPECT_EQ(0, eventfd_read(eventfd_fd, &value)); + + rv = myLock2.Lock(dir, nullptr); + EXPECT_EQ(NS_ERROR_FILE_ACCESS_DENIED, rv); + + // kill the child + EXPECT_EQ(0, kill(childpid, SIGTERM)); + + // reap zombie (required to collect the lock) + int status; + EXPECT_EQ(childpid, waitpid(childpid, &status, 0)); + + rv = myLock2.Lock(dir, nullptr); + EXPECT_EQ(NS_SUCCEEDED(rv), true); + } else { + // child + rv = myLock.Lock(dir, nullptr); + ASSERT_EQ(NS_SUCCEEDED(rv), true); + + // unblock parent + EXPECT_EQ(0, eventfd_write(eventfd_fd, 1)); + + // parent will kill us + for (;;) sleep(1); + } + + close(eventfd_fd); + + myLock.Cleanup(); + myLock2.Cleanup(); +} -- cgit v1.2.3