1 files changed, 83 insertions, 0 deletions
diff --git a/ipc/glue/Transport_posix.cpp b/ipc/glue/Transport_posix.cpp
new file mode 100644
index 0000000000..c756c98b0e
--- /dev/null
+++ b/ipc/glue/Transport_posix.cpp
@@ -0,0 +1,83 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <unistd.h>
+
+#include <string>
+
+#include "base/eintr_wrapper.h"
+
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/ipc/Transport.h"
+#include "mozilla/ipc/FileDescriptor.h"
+#include "ProtocolUtils.h"
+
+using base::ProcessHandle;
+
+namespace mozilla {
+namespace ipc {
+
+nsresult CreateTransport(base::ProcessId aProcIdOne, TransportDescriptor* aOne,
+                         TransportDescriptor* aTwo) {
+  auto id = IPC::Channel::GenerateVerifiedChannelID();
+  // Use MODE_SERVER to force creation of the socketpair
+  Transport t(id, Transport::MODE_SERVER, nullptr);
+  int fd1 = t.GetFileDescriptor();
+  int fd2, dontcare;
+  t.GetClientFileDescriptorMapping(&fd2, &dontcare);
+  if (fd1 < 0 || fd2 < 0) {
+    return NS_ERROR_TRANSPORT_INIT;
+  }
+
+  // The Transport closes these fds when it goes out of scope, so we
+  // dup them here
+  fd1 = dup(fd1);
+  if (fd1 < 0) {
+    AnnotateCrashReportWithErrno(
+        CrashReporter::Annotation::IpcCreateTransportDupErrno, errno);
+  }
+  fd2 = dup(fd2);
+  if (fd2 < 0) {
+    AnnotateCrashReportWithErrno(
+        CrashReporter::Annotation::IpcCreateTransportDupErrno, errno);
+  }
+
+  if (fd1 < 0 || fd2 < 0) {
+    IGNORE_EINTR(close(fd1));
+    IGNORE_EINTR(close(fd2));
+    return NS_ERROR_DUPLICATE_HANDLE;
+  }
+
+  aOne->mFd = base::FileDescriptor(fd1, true /*close after sending*/);
+  aTwo->mFd = base::FileDescriptor(fd2, true /*close after sending*/);
+  return NS_OK;
+}
+
+UniquePtr<Transport> OpenDescriptor(const TransportDescriptor& aTd,
+                                    Transport::Mode aMode) {
+  return MakeUnique<Transport>(aTd.mFd.fd, aMode, nullptr);
+}
+
+UniquePtr<Transport> OpenDescriptor(const FileDescriptor& aFd,
+                                    Transport::Mode aMode) {
+  auto rawFD = aFd.ClonePlatformHandle();
+  return MakeUnique<Transport>(rawFD.release(), aMode, nullptr);
+}
+
+TransportDescriptor DuplicateDescriptor(const TransportDescriptor& aTd) {
+  TransportDescriptor result = aTd;
+  result.mFd.fd = dup(aTd.mFd.fd);
+  if (result.mFd.fd == -1) {
+    AnnotateSystemError();
+  }
+  MOZ_RELEASE_ASSERT(result.mFd.fd != -1, "DuplicateDescriptor failed");
+  return result;
+}
+
+void CloseDescriptor(const TransportDescriptor& aTd) { close(aTd.mFd.fd); }
+
+}  // namespace ipc
+}  // namespace mozilla