Remove some dead code in WebURLLoaderMockFactory.
[chromium-blink-merge.git] / content / common / sandbox_util.cc
blob3fe98b4e2009b33d8242ea241641c1cb95778320
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/common/sandbox_util.h"
7 #if defined(OS_POSIX)
8 #include <unistd.h>
9 #endif
11 #include "content/public/common/sandbox_init.h"
13 namespace content {
15 IPC::PlatformFileForTransit BrokerGetFileHandleForProcess(
16 base::PlatformFile handle,
17 base::ProcessId target_process_id,
18 bool should_close_source) {
19 IPC::PlatformFileForTransit out_handle;
20 #if defined(OS_WIN)
21 DWORD options = DUPLICATE_SAME_ACCESS;
22 if (should_close_source)
23 options |= DUPLICATE_CLOSE_SOURCE;
24 if (!content::BrokerDuplicateHandle(handle, target_process_id, &out_handle,
25 0, options)) {
26 out_handle = IPC::InvalidPlatformFileForTransit();
28 #elif defined(OS_POSIX)
29 // If asked to close the source, we can simply re-use the source fd instead of
30 // dup()ing and close()ing.
31 // When we're not closing the source, we need to duplicate the handle and take
32 // ownership of that. The reason is that this function is often used to
33 // generate IPC messages, and the handle must remain valid until it's sent to
34 // the other process from the I/O thread. Without the dup, calling code might
35 // close the source handle before the message is sent, creating a race
36 // condition.
37 int fd = should_close_source ? handle : ::dup(handle);
38 out_handle = base::FileDescriptor(fd, true);
39 #else
40 #error Not implemented.
41 #endif
42 return out_handle;
45 } // namespace content