diff options
Diffstat (limited to 'base/files/scoped_file.cc')
-rw-r--r-- | base/files/scoped_file.cc | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/base/files/scoped_file.cc b/base/files/scoped_file.cc new file mode 100644 index 0000000..39f064d --- /dev/null +++ b/base/files/scoped_file.cc @@ -0,0 +1,35 @@ +// 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 |