Index: content/public/common/sandbox_init.cc |
=================================================================== |
--- content/public/common/sandbox_init.cc (revision 0) |
+++ content/public/common/sandbox_init.cc (revision 0) |
@@ -0,0 +1,44 @@ |
+// Copyright (c) 2012 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 "content/public/common/sandbox_init.h" |
+ |
+#if defined(OS_ANDROID) |
+#include <unistd.h> |
+#endif |
+ |
+namespace content { |
+ |
+IPC::PlatformFileForTransit BrokerGetFileHandleForProcess( |
+ base::PlatformFile handle, |
+ base::ProcessId target_process_id, |
+ bool should_close_source) { |
+ IPC::PlatformFileForTransit out_handle; |
+#if defined(OS_WIN) |
+ DWORD options = DUPLICATE_SAME_ACCESS; |
+ if (should_close_source) |
+ options |= DUPLICATE_CLOSE_SOURCE; |
+ if (!content::BrokerDuplicateHandle(handle, target_process_id, &out_handle, |
+ 0, options)) { |
+ out_handle = IPC::InvalidPlatformFileForTransit(); |
+ } |
+#elif defined(OS_POSIX) |
+ // If asked to close the source, we can simply re-use the source fd instead of |
+ // dup()ing and close()ing. |
+ // When we're not closing the source, we need to duplicate the handle and take |
+ // ownership of that. The reason is that this function is often used to |
+ // generate IPC messages, and the handle must remain valid until it's sent to |
+ // the other process from the I/O thread. Without the dup, calling code might |
+ // close the source handle before the message is sent, creating a race |
+ // condition. |
+ int fd = should_close_source ? handle : ::dup(handle); |
+ out_handle = base::FileDescriptor(fd, true); |
+#else |
+ #error Not implemented. |
+#endif |
+ return out_handle; |
+} |
+ |
+} // namespace content |
+ |
Property changes on: content\public\common\sandbox_init.cc |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |