Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include "sal/config.h"
      21             : 
      22             : #if defined MACOSX
      23             : #include <cassert>
      24             : #include <limits>
      25             : #include <unistd.h>
      26             : #endif
      27             : 
      28             : #include "osl/process.h"
      29             : #include "sal/main.h"
      30             : #include "sal/types.h"
      31             : 
      32             : extern "C" {
      33             : 
      34         492 : void sal_detail_initialize(int argc, char ** argv) {
      35             : #if defined MACOSX
      36             :     // On Mac OS X, soffice can restart itself via exec (see restartOnMac in
      37             :     // desktop/source/app/app.cxx), which leaves all file descriptors open,
      38             :     // which in turn can have unwanted effects (see
      39             :     // <https://bugs.freedesktop.org/show_bug.cgi?id=50603> "Unable to update
      40             :     // LibreOffice without resetting user profile").  But closing fds in
      41             :     // restartOnMac before calling exec does not work, as additional threads
      42             :     // might still be running then, wich can still use those fds and cause
      43             :     // crashes.  Therefore, the simples solution is to close fds at process
      44             :     // start (as early as possible, so that no other threads have been created
      45             :     // yet that might already have opened some fds); this is done for all kinds
      46             :     // of processes here, not just soffice, but hopefully none of our processes
      47             :     // rely on being spawned with certain fds already open.  Unfortunately, Mac
      48             :     // OS X appears to have no better interface to close all fds (like
      49             :     // closefrom):
      50             :     long openMax = sysconf(_SC_OPEN_MAX);
      51             :     if (openMax == -1) {
      52             :         // Some random value, but hopefully sysconf never returns -1 anyway:
      53             :         openMax = 1024;
      54             :     }
      55             :     assert(openMax >= 0 && openMax <= std::numeric_limits< int >::max());
      56             :     for (int fd = 3; fd < openMax; ++fd) {
      57             :         close(fd);
      58             :     }
      59             : #endif
      60             : 
      61         492 :     osl_setCommandArgs(argc, argv);
      62         492 : }
      63             : 
      64         492 : void sal_detail_deinitialize() {}
      65             : 
      66             : }
      67             : 
      68             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */