blob: edd0cff0639fa7287784c71a2f14a50b2d2780c1 [file] [log] [blame]
// Copyright 2018 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 "mojo/core/platform_handle_utils.h"
#include "build/build_config.h"
#if defined(OS_FUCHSIA)
#include <lib/zx/vmo.h>
#elif defined(OS_POSIX)
#include "base/files/scoped_file.h"
#elif defined(OS_WIN)
#include "base/win/scoped_handle.h"
#endif
#if defined(OS_MACOSX) && !defined(OS_IOS)
#include "base/mac/scoped_mach_port.h"
#endif
namespace mojo {
namespace core {
void ExtractPlatformHandlesFromSharedMemoryRegionHandle(
base::subtle::PlatformSharedMemoryRegion::ScopedPlatformHandle handle,
PlatformHandle* extracted_handle,
PlatformHandle* extracted_readonly_handle) {
#if defined(OS_WIN)
*extracted_handle = PlatformHandle(base::win::ScopedHandle(handle.Take()));
#elif defined(OS_FUCHSIA)
*extracted_handle = PlatformHandle(std::move(handle));
#elif defined(OS_MACOSX) && !defined(OS_IOS)
// This is a Mach port. Same code as above and below, but separated for
// clarity.
*extracted_handle = PlatformHandle(std::move(handle));
#elif defined(OS_ANDROID)
// This is a file descriptor. Same code as above, but separated for clarity.
*extracted_handle = PlatformHandle(std::move(handle));
#else
*extracted_handle = PlatformHandle(std::move(handle.fd));
*extracted_readonly_handle = PlatformHandle(std::move(handle.readonly_fd));
#endif
}
base::subtle::PlatformSharedMemoryRegion::ScopedPlatformHandle
CreateSharedMemoryRegionHandleFromPlatformHandles(
PlatformHandle handle,
PlatformHandle readonly_handle) {
#if defined(OS_WIN)
DCHECK(!readonly_handle.is_valid());
return handle.TakeHandle();
#elif defined(OS_FUCHSIA)
DCHECK(!readonly_handle.is_valid());
return zx::vmo(handle.TakeHandle());
#elif defined(OS_MACOSX) && !defined(OS_IOS)
DCHECK(!readonly_handle.is_valid());
return handle.TakeMachPort();
#elif defined(OS_ANDROID)
DCHECK(!readonly_handle.is_valid());
return handle.TakeFD();
#else
return base::subtle::ScopedFDPair(handle.TakeFD(), readonly_handle.TakeFD());
#endif
}
} // namespace core
} // namespace mojo