Line data    Source code

       1             : /* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "mozilla/devtools/FileDescriptorOutputStream.h"
       7             : #include "private/pprio.h"
       8             : 
       9             : namespace mozilla {
      10             : namespace devtools {
      11             : 
      12             : /* static */ already_AddRefed<FileDescriptorOutputStream>
      13           0 : FileDescriptorOutputStream::Create(const ipc::FileDescriptor& fileDescriptor)
      14             : {
      15           0 :   if (NS_WARN_IF(!fileDescriptor.IsValid()))
      16           0 :     return nullptr;
      17             : 
      18           0 :   auto rawFD = fileDescriptor.ClonePlatformHandle();
      19           0 :   PRFileDesc* prfd = PR_ImportFile(PROsfd(rawFD.release()));
      20           0 :   if (NS_WARN_IF(!prfd))
      21           0 :     return nullptr;
      22             : 
      23           0 :   RefPtr<FileDescriptorOutputStream> stream = new FileDescriptorOutputStream(prfd);
      24           0 :   return stream.forget();
      25             : }
      26             : 
      27           0 : NS_IMPL_ISUPPORTS(FileDescriptorOutputStream, nsIOutputStream);
      28             : 
      29             : NS_IMETHODIMP
      30           0 : FileDescriptorOutputStream::Close()
      31             : {
      32             :   // Repeatedly closing is idempotent.
      33           0 :   if (!fd)
      34           0 :     return NS_OK;
      35             : 
      36           0 :   if (PR_Close(fd) != PR_SUCCESS)
      37           0 :     return NS_ERROR_FAILURE;
      38           0 :   fd = nullptr;
      39           0 :   return NS_OK;
      40             : }
      41             : 
      42             : NS_IMETHODIMP
      43           0 : FileDescriptorOutputStream::Write(const char* buf, uint32_t count, uint32_t* retval)
      44             : {
      45           0 :   if (NS_WARN_IF(!fd))
      46           0 :     return NS_ERROR_FAILURE;
      47             : 
      48           0 :   auto written = PR_Write(fd, buf, count);
      49           0 :   if (written < 0)
      50           0 :     return NS_ERROR_FAILURE;
      51           0 :   *retval = written;
      52           0 :   return NS_OK;
      53             : }
      54             : 
      55             : NS_IMETHODIMP
      56           0 : FileDescriptorOutputStream::Flush()
      57             : {
      58           0 :   if (NS_WARN_IF(!fd))
      59           0 :     return NS_ERROR_FAILURE;
      60             : 
      61           0 :   return PR_Sync(fd) == PR_SUCCESS ? NS_OK : NS_ERROR_FAILURE;
      62             : }
      63             : 
      64             : NS_IMETHODIMP
      65           0 : FileDescriptorOutputStream::WriteFrom(nsIInputStream* fromStream, uint32_t count,
      66             :                                       uint32_t* retval)
      67             : {
      68           0 :   return NS_ERROR_NOT_IMPLEMENTED;
      69             : }
      70             : 
      71             : NS_IMETHODIMP
      72           0 : FileDescriptorOutputStream::WriteSegments(nsReadSegmentFun reader, void* closure,
      73             :                                           uint32_t count, uint32_t* retval)
      74             : {
      75           0 :   return NS_ERROR_NOT_IMPLEMENTED;
      76             : }
      77             : 
      78             : NS_IMETHODIMP
      79           0 : FileDescriptorOutputStream::IsNonBlocking(bool* retval)
      80             : {
      81           0 :   *retval = false;
      82           0 :   return NS_OK;
      83             : }
      84             : 
      85             : } // namespace devtools
      86             : } // namespace mozilla