RawChannelPosix: Close handles only if they are sent successfully.

third_party/mojo/src/mojo/edk/system/raw_channel_posix.cc

 // Copyright 2013 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/edk/system/raw_channel.h"
 
 #include <errno.h>
 #include <sys/uio.h>
 #include <unistd.h>
 
@@ skipping 226 matching lines @@
     const size_t kMaxBufferCount = 10;
     iovec iov[kMaxBufferCount];
     size_t buffer_count = std::min(buffers.size(), kMaxBufferCount);
     for (size_t i = 0; i < buffer_count; ++i) {
       iov[i].iov_base = const_cast<char*>(buffers[i].addr);
       iov[i].iov_len = buffers[i].size;
     }
 
     write_result = embedder::PlatformChannelSendmsgWithHandles(
         fd_.get(), iov, buffer_count, platform_handles, num_platform_handles);
-    for (size_t i = 0; i < num_platform_handles; i++)
-      platform_handles[i].CloseIfNecessary();
+    if (write_result >= 0) {
+      for (size_t i = 0; i < num_platform_handles; i++)
+        platform_handles[i].CloseIfNecessary();
+    }
   } else {
     std::vector<WriteBuffer::Buffer> buffers;
     write_buffer_no_lock()->GetBuffers(&buffers);
     DCHECK(!buffers.empty());
 
     if (buffers.size() == 1) {
       write_result = embedder::PlatformChannelWrite(fd_.get(), buffers[0].addr,
                                                     buffers[0].size);
     } else {
       const size_t kMaxBufferCount = 10;
@@ skipping 209 matching lines @@
 
 // Static factory method declared in raw_channel.h.
 // static
 scoped_ptr<RawChannel> RawChannel::Create(
     embedder::ScopedPlatformHandle handle) {
   return make_scoped_ptr(new RawChannelPosix(handle.Pass()));
 }
 
 }  // namespace system
 }  // namespace mojo