// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/files/scoped_file.h"
#include "base/logging.h"
#if defined(OS_POSIX)
#include <unistd.h>
#include "base/posix/eintr_wrapper.h"
#endif
namespace base {
namespace internal {
#if defined(OS_POSIX)
// static
void ScopedFDCloseTraits::Free(int fd) {
// It's important to crash here.
// There are security implications to not closing a file descriptor
// properly. As file descriptors are "capabilities", keeping them open
// would make the current process keep access to a resource. Much of
// Chrome relies on being able to "drop" such access.
// It's especially problematic on Linux with the setuid sandbox, where
// a single open directory would bypass the entire security model.
PCHECK(0 == IGNORE_EINTR(close(fd)));
}
#endif // OS_POSIX
} // namespace internal
} // namespace base