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diff --git a/sal/osl/unx/system.cxx b/sal/osl/unx/system.cxx
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+/* -*- 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 <unistd.h>
+#include <string.h>
+
+#include <config_features.h>
+
+#include "system.hxx"
+
+#ifdef NO_PTHREAD_RTL
+
+#if defined(MACOSX)
+
+#include <premac.h>
+#include <Foundation/Foundation.h>
+#include <postmac.h>
+
+/*
+ * Add support for resolving Mac native alias files (not the same as unix alias files)
+ * (what are "unix alias files"?)
+ * returns 0 on success.
+ */
+int macxp_resolveAlias(char *path, int buflen)
+{
+#if HAVE_FEATURE_MACOSX_SANDBOX
+ /* Avoid unnecessary messages in the system.log:
+ *
+ * soffice(57342) deny file-read-data /Users/tml/Documents/b.odt/..namedfork/rsrc
+ * etc.
+ *
+ * Just don't bother with resolving aliases. I doubt its usefulness anyway.
+ */
+ (void) path;
+ (void) buflen;
+ return 0;
+#else
+ CFStringRef cfpath;
+ CFURLRef cfurl;
+ CFErrorRef cferror;
+ CFDataRef cfbookmark;
+
+ // Don't even try anything for files inside the app bundle. Just a
+ // waste of time.
+
+ static const char * const appBundle = [[[NSBundle mainBundle] bundlePath] UTF8String];
+
+ const size_t appBundleLen = strlen(appBundle);
+ if (strncmp(path, appBundle, appBundleLen) == 0 && path[appBundleLen] == '/')
+ return 0;
+
+ char *unprocessedPath = path;
+
+ if ( *unprocessedPath == '/' )
+ unprocessedPath++;
+
+ int nRet = 0;
+ while ( !nRet && unprocessedPath && *unprocessedPath )
+ {
+ unprocessedPath = strchr( unprocessedPath, '/' );
+ if ( unprocessedPath )
+ *unprocessedPath = '\0';
+
+ cfpath = CFStringCreateWithCString( nullptr, path, kCFStringEncodingUTF8 );
+ cfurl = CFURLCreateWithFileSystemPath( nullptr, cfpath, kCFURLPOSIXPathStyle, false );
+ CFRelease( cfpath );
+ cferror = nullptr;
+ cfbookmark = CFURLCreateBookmarkDataFromFile( nullptr, cfurl, &cferror );
+ CFRelease( cfurl );
+
+ if ( cfbookmark == nullptr )
+ {
+ if(cferror)
+ {
+ CFRelease( cferror );
+ }
+ }
+ else
+ {
+ Boolean isStale;
+ cfurl = CFURLCreateByResolvingBookmarkData( nullptr, cfbookmark, kCFBookmarkResolutionWithoutUIMask,
+ nullptr, nullptr, &isStale, &cferror );
+ CFRelease( cfbookmark );
+ if ( cfurl == nullptr )
+ {
+ CFRelease( cferror );
+ }
+ else
+ {
+ cfpath = CFURLCopyFileSystemPath( cfurl, kCFURLPOSIXPathStyle );
+ CFRelease( cfurl );
+ if ( cfpath != nullptr )
+ {
+ char tmpPath[ PATH_MAX ];
+ if ( CFStringGetCString( cfpath, tmpPath, PATH_MAX, kCFStringEncodingUTF8 ) )
+ {
+ int nLen = strlen( tmpPath ) + ( unprocessedPath ? strlen( unprocessedPath + 1 ) + 1 : 0 );
+ if ( nLen < buflen && nLen < PATH_MAX )
+ {
+ if ( unprocessedPath )
+ {
+ int nTmpPathLen = strlen( tmpPath );
+ strcat( tmpPath, "/" );
+ strcat( tmpPath, unprocessedPath + 1 );
+ strcpy( path, tmpPath);
+ unprocessedPath = path + nTmpPathLen;
+ }
+ else if ( !unprocessedPath )
+ {
+ strcpy( path, tmpPath );
+ }
+ }
+ else
+ {
+ errno = ENAMETOOLONG;
+ nRet = -1;
+ }
+ }
+ CFRelease( cfpath );
+ }
+ }
+ }
+
+ if ( unprocessedPath )
+ *unprocessedPath++ = '/';
+ }
+
+ return nRet;
+#endif
+}
+
+#endif /* defined MACOSX */
+
+#endif /* NO_PTHREAD_RTL */
+
+//might be useful on other platforms, but doesn't compiler under MACOSX anyway
+#if defined(__GNUC__) && defined(LINUX)
+//force the __data_start symbol to exist in any executables that link against
+//libuno_sal so that dlopening of the libgcj provided libjvm.so on some
+//platforms where it needs that symbol will succeed. e.g. Debian mips/lenny
+//with gcc 4.3. With this in place the smoketest succeeds with libgcj provided
+//java. Quite possibly also required/helpful for s390x/s390 and maybe some
+//others. Without it the dlopen of libjvm.so will fail with __data_start
+//not found
+extern int __data_start[] __attribute__((weak));
+extern int data_start[] __attribute__((weak));
+extern int _end[] __attribute__((weak));
+static void *dummy[] __attribute__((used)) = {__data_start, data_start, _end};
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */