netwerk/ipc/RemoteOpenFileParent.cpp

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/netwerk/ipc/RemoteOpenFileParent.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,62 @@
     1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* vim: set sw=2 ts=8 et tw=80 : */
     1.6 +
     1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
    1.10 +
    1.11 +#include "mozilla/net/RemoteOpenFileParent.h"
    1.12 +#include "mozilla/unused.h"
    1.13 +#include "nsEscape.h"
    1.14 +
    1.15 +#if !defined(XP_WIN) && !defined(MOZ_WIDGET_COCOA)
    1.16 +#include <fcntl.h>
    1.17 +#include <unistd.h>
    1.18 +#endif
    1.19 +
    1.20 +namespace mozilla {
    1.21 +namespace net {
    1.22 +
    1.23 +bool
    1.24 +RemoteOpenFileParent::OpenSendCloseDelete()
    1.25 +{
    1.26 +#if defined(XP_WIN) || defined(MOZ_WIDGET_COCOA)
    1.27 +  MOZ_CRASH("OS X and Windows shouldn't be doing IPDL here");
    1.28 +#else
    1.29 +
    1.30 +  // TODO: make this async!
    1.31 +
    1.32 +  FileDescriptor fileDescriptor;
    1.33 +
    1.34 +  nsAutoCString path;
    1.35 +  nsresult rv = mURI->GetFilePath(path);
    1.36 +  NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "GetFilePath failed!");
    1.37 +
    1.38 +  NS_UnescapeURL(path);
    1.39 +
    1.40 +  if (NS_SUCCEEDED(rv)) {
    1.41 +    int fd = open(path.get(), O_RDONLY);
    1.42 +    if (fd == -1) {
    1.43 +      printf_stderr("RemoteOpenFileParent: file '%s' was not found!\n",
    1.44 +                    path.get());
    1.45 +    } else {
    1.46 +      fileDescriptor = FileDescriptor(fd);
    1.47 +    }
    1.48 +  }
    1.49 +
    1.50 +  // Sending a potentially invalid file descriptor is just fine.
    1.51 +  unused << Send__delete__(this, fileDescriptor);
    1.52 +
    1.53 +  if (fileDescriptor.IsValid()) {
    1.54 +    // close file now that other process has it open, else we'll leak fds in the
    1.55 +    // parent process.
    1.56 +    close(fileDescriptor.PlatformHandle());
    1.57 +  }
    1.58 +
    1.59 +#endif // OS_TYPE
    1.60 +
    1.61 +  return true;
    1.62 +}
    1.63 +
    1.64 +} // namespace net
    1.65 +} // namespace mozilla

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