1 files changed, 98 insertions, 0 deletions
diff --git a/sal/osl/unx/salinit.cxx b/sal/osl/unx/salinit.cxx
new file mode 100644
index 000000000..c55cb2667
--- /dev/null
+++ b/sal/osl/unx/salinit.cxx
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <config_features.h>
+
+#include <sal/config.h>
+
+#if defined MACOSX
+#include <cassert>
+#include <limits>
+#include <unistd.h>
+#include <sys/stat.h>
+#endif
+
+#include <config_global.h>
+#include <osl/process.h>
+#include <sal/main.h>
+#include <sal/types.h>
+
+#include "saltime.hxx"
+#include "soffice.hxx"
+#include <salusesyslog.hxx>
+
+#if HAVE_SYSLOG_H
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#endif
+
+extern "C" {
+
+void sal_detail_initialize(int argc, char ** argv) {
+    if (argc == sal::detail::InitializeSoffice)
+    {
+        sal::detail::setSoffice();
+        return;
+    }
+#if defined MACOSX && !HAVE_FEATURE_MACOSX_SANDBOX
+    // On macOS when not sandboxed, soffice can restart itself via exec (see
+    // restartOnMac in desktop/source/app/app.cxx), which leaves all file
+    // descriptors open, which in turn can have unwanted effects (see
+    // <https://bugs.libreoffice.org/show_bug.cgi?id=50603> "Unable to update
+    // LibreOffice without resetting user profile"). But closing fds in
+    // restartOnMac before calling exec does not work, as additional threads
+    // might still be running then, which can still use those fds and cause
+    // crashes. Therefore, the simplest solution is to close fds at process
+    // start (as early as possible, so that no other threads have been created
+    // yet that might already have opened some fds); this is done for all kinds
+    // of processes here, not just soffice, but hopefully none of our processes
+    // rely on being spawned with certain fds already open. Unfortunately, Mac
+    // macOS appears to have no better interface to close all fds (like
+    // closefrom):
+    long openMax = sysconf(_SC_OPEN_MAX);
+    // When LibreOffice restarts itself on macOS 11 beta on arm64, for
+    // some reason sysconf(_SC_OPEN_MAX) returns 0x7FFFFFFFFFFFFFFF,
+    // so use a sanity limit here.
+    if (openMax == -1 || openMax == std::numeric_limits<long>::max()) {
+        openMax = 100000;
+    }
+    assert(openMax >= 0 && openMax <= std::numeric_limits< int >::max());
+    for (int fd = 3; fd < int(openMax); ++fd) {
+        struct stat s;
+        if (fstat(fd, &s) != -1 && S_ISREG(s.st_mode))
+            close(fd);
+    }
+#endif
+    sal_initGlobalTimer();
+#if HAVE_SYSLOG_H
+    const char *use_syslog = getenv("SAL_LOG_SYSLOG");
+    sal_use_syslog = use_syslog != nullptr && !strcmp(use_syslog, "1");
+    if (sal_use_syslog)
+        openlog("libreoffice", 0, LOG_USER);
+#endif
+
+    osl_setCommandArgs(argc, argv);
+}
+
+void sal_detail_deinitialize() {}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */