sal/osl/unx/salinit.cxx

   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 <config_features.h>
  21
  22 #include "sal/config.h"
  23
  24 #if defined MACOSX
  25 #include <cassert>
  26 #include <limits>
  27 #include <unistd.h>
  28 #include <sys/stat.h>
  29 #endif
  30
  31 #include "osl/process.h"
  32 #include "sal/main.h"
  33 #include "sal/types.h"
  34
  35 #if HAVE_SYSLOG_H
  36 #include <string.h>
  37 #include <syslog.h>
  38 // from sal/osl/all/log.cxx:
  39 extern bool sal_use_syslog;
  40 #endif
  41
  42 extern "C" {
  43
  44 //From time.c
  45 void sal_initGlobalTimer();
  46
  47 void sal_detail_initialize(int argc, char ** argv) {
  48 #if defined MACOSX && !HAVE_FEATURE_MACOSX_SANDBOX
  49     // On OS X when not sandboxed, soffice can restart itself via exec (see
  50     // restartOnMac in desktop/source/app/app.cxx), which leaves all file
  51     // descriptors open, which in turn can have unwanted effects (see
  52     // <https://bugs.libreoffice.org/show_bug.cgi?id=50603> "Unable to update
  53     // LibreOffice without resetting user profile"). But closing fds in
  54     // restartOnMac before calling exec does not work, as additional threads
  55     // might still be running then, which can still use those fds and cause
  56     // crashes. Therefore, the simplest solution is to close fds at process
  57     // start (as early as possible, so that no other threads have been created
  58     // yet that might already have opened some fds); this is done for all kinds
  59     // of processes here, not just soffice, but hopefully none of our processes
  60     // rely on being spawned with certain fds already open. Unfortunately, Mac
  61     // OS X appears to have no better interface to close all fds (like
  62     // closefrom):
  63     long openMax = sysconf(_SC_OPEN_MAX);
  64     if (openMax == -1) {
  65         // Some random value, but hopefully sysconf never returns -1 anyway:
  66         openMax = 1024;
  67     }
  68     assert(openMax >= 0 && openMax <= std::numeric_limits< int >::max());
  69     for (int fd = 3; fd < openMax; ++fd) {
  70         struct stat s;
  71         if (fstat(fd, &s) != -1 && S_ISREG(s.st_mode))
  72             close(fd);
  73     }
  74 #endif
  75     sal_initGlobalTimer();
  76 #if HAVE_SYSLOG_H
  77     const char *use_syslog = getenv("SAL_LOG_SYSLOG");
  78     sal_use_syslog = use_syslog != NULL && !strcmp(use_syslog, "1");
  79     if (sal_use_syslog)
  80         openlog("libreoffice", 0, LOG_USER);
  81 #endif
  82
  83     osl_setCommandArgs(argc, argv);
  84 }
  85
  86 void sal_detail_deinitialize() {}
  87
  88 }
  89
  90 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */