Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

50 files changed, 18712 insertions, 0 deletions

diff --git a/sal/osl/unx/asm/interlck_sparc.s b/sal/osl/unx/asm/interlck_sparc.s
new file mode 100644
index 000000000..7b971a50a
--- /dev/null
+++ b/sal/osl/unx/asm/interlck_sparc.s
@@ -0,0 +1,79 @@
+/*
+ * 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 .
+ */
+
+
+/*
+ * Implements osl_[increment|decrement]InterlockedCount:
+ * sparcv9/sparcv8plus architecture:    use the "cas"  instruction
+ * 
+ * 32 bit mode with v8plus support or 64 bit mode:
+ * sparcv9 mode is implied. Assemble with -xarch=v8plus (32 bit) or
+ * -xarch=v9 (64 bit).
+ * 
+ */
+
+#if !defined(__sparcv8plus) && !defined(__sparcv9) && !defined(__sparc_v9__)
+
+#error LibreOffice requires SPARCv8plus or SPARCv9 CPU with "cas" instruction
+
+#endif
+
+.section   ".text"
+ .global  osl_incrementInterlockedCount
+ .align   8
+
+!   Implements osl_[increment|decrement]InterlockedCount with sparcv9(sparcv8plus) "cas" 
+!   instruction.
+
+osl_incrementInterlockedCount:
+
+1:      ld      [%o0], %o1
+        add     %o1, 1, %o2
+!       allow linux to build for v8
+        .word 0xD5E21009 
+!       cas     [%o0], %o1, %o2
+        cmp     %o1, %o2
+        bne     1b
+        nop                         ! delay slot
+        retl
+        add     %o2, 1, %o0         ! delay slot
+
+ .type  osl_incrementInterlockedCount,#function
+ .size  osl_incrementInterlockedCount,.-osl_incrementInterlockedCount
+
+
+.section   ".text"
+ .global  osl_decrementInterlockedCount
+ .align   8
+
+osl_decrementInterlockedCount:
+
+1:      ld      [%o0], %o1
+        sub     %o1, 1, %o2
+!       allow linux to build for v8
+        .word 0xD5E21009            
+!       cas     [%o0], %o1, %o2
+        cmp     %o1, %o2
+        bne     1b
+        nop                         ! delay slot
+        retl
+        sub     %o2, 1, %o0         ! delay slot
+
+ .type  osl_decrementInterlockedCount,#function
+ .size  osl_decrementInterlockedCount,.-osl_decrementInterlockedCount
+
diff --git a/sal/osl/unx/backtrace.c b/sal/osl/unx/backtrace.c
new file mode 100644
index 000000000..f7bd01c33
--- /dev/null
+++ b/sal/osl/unx/backtrace.c
@@ -0,0 +1,246 @@
+/* -*- 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 "backtrace.h"
+
+#if ! HAVE_FEATURE_BACKTRACE /* no GNU backtrace implementation available */
+
+#include <sal/types.h>
+
+#ifdef __sun /* Solaris */
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <setjmp.h>
+#include <stdio.h>
+#include <sys/frame.h>
+
+#if defined(SPARC)
+
+#if defined IS_LP64
+
+#define FRAME_PTR_OFFSET 1
+#define FRAME_OFFSET     0
+#define STACK_BIAS       0x7ff
+
+#else
+
+#define FRAME_PTR_OFFSET 1
+#define FRAME_OFFSET     0
+#define STACK_BIAS       0
+
+#endif
+
+#elif defined( INTEL )
+
+#define FRAME_PTR_OFFSET 3
+#define FRAME_OFFSET     0
+#define STACK_BIAS       0
+
+#else
+
+#error Unknown Solaris target platform.
+
+#endif /* defined SPARC or INTEL */
+
+int backtrace( void **buffer, int max_frames )
+{
+    jmp_buf       ctx;
+    long          fpval;
+    struct frame *fp;
+    int i;
+
+    /* flush register windows */
+#ifdef SPARC
+    asm("ta 3");
+#endif
+
+    /* get stack- and framepointer */
+    setjmp(ctx);
+
+    fpval = ((long*)(ctx))[FRAME_PTR_OFFSET];
+    fp = (struct frame*)((char*)(fpval) + STACK_BIAS);
+
+    for (i = 0; (i < FRAME_OFFSET) && (fp != 0); i++)
+        fp = (struct frame*)((char*)(fp->fr_savfp) + STACK_BIAS);
+
+    /* iterate through backtrace */
+    for (i = 0; (fp != 0) && (fp->fr_savpc != 0) && (i < max_frames); i++)
+    {
+        /* saved (prev) frame */
+        struct frame * prev = (struct frame*)((char*)(fp->fr_savfp) + STACK_BIAS);
+
+        /* store frame */
+        *(buffer++) = (void*)(fp->fr_savpc);
+
+        /* prev frame (w/ stack growing top down) */
+        fp = (prev > fp) ? prev : 0;
+    }
+
+    /* return number of frames stored */
+    return i;
+}
+
+char ** backtrace_symbols(void * const * buffer, int size)
+{
+    (void)buffer; (void)size;
+    return NULL; /*TODO*/
+}
+
+void backtrace_symbols_fd( void **buffer, int size, int fd )
+{
+    FILE    *fp = fdopen( fd, "w" );
+
+    if ( fp )
+    {
+        void **pFramePtr;
+
+        for ( pFramePtr = buffer; size > 0 && pFramePtr && *pFramePtr; pFramePtr++, size-- )
+        {
+            Dl_info     dli;
+            ptrdiff_t   offset;
+
+            if ( 0 != dladdr( *pFramePtr, &dli ) )
+            {
+                if ( dli.dli_fname && dli.dli_fbase )
+                {
+                    offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_fbase;
+                    fprintf( fp, "%s+0x%" SAL_PRI_PTRDIFFT "x", dli.dli_fname, offset );
+                }
+                if ( dli.dli_sname && dli.dli_saddr )
+                {
+                    offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_saddr;
+                    fprintf( fp, "(%s+0x%" SAL_PRI_PTRDIFFT "x)", dli.dli_sname, offset );
+                }
+            }
+            fprintf( fp, "[%p]\n", *pFramePtr );
+        }
+
+        fclose( fp );
+    }
+}
+
+#elif defined FREEBSD || defined NETBSD || defined OPENBSD || defined(DRAGONFLY)
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <setjmp.h>
+#include <stddef.h>
+#include <stdio.h>
+
+/* no frame.h on FreeBSD */
+struct frame {
+    struct frame *fr_savfp;
+    long    fr_savpc;
+};
+
+#if defined(POWERPC) || defined(POWERPC64)
+
+#define FRAME_PTR_OFFSET 1
+#define FRAME_OFFSET     0
+
+#else
+
+#define FRAME_PTR_OFFSET 3
+#define FRAME_OFFSET 0
+
+#endif
+
+int backtrace( void **buffer, int max_frames )
+{
+    struct frame *fp;
+    jmp_buf ctx;
+    int i;
+    /* get stack- and framepointer */
+    setjmp(ctx);
+    fp = (struct frame*)(((size_t*)(ctx))[FRAME_PTR_OFFSET]);
+    for ( i=0; (i<FRAME_OFFSET) && (fp!=0); i++)
+        fp = fp->fr_savfp;
+    /* iterate through backtrace */
+    for (i=0; fp && fp->fr_savpc && i<max_frames; i++)
+    {
+        /* store frame */
+        *(buffer++) = (void *)fp->fr_savpc;
+        /* next frame */
+        fp=fp->fr_savfp;
+    }
+    return i;
+}
+
+char ** backtrace_symbols(void * const * buffer, int size)
+{
+    (void)buffer; (void)size;
+    return NULL; /*TODO*/
+}
+
+void backtrace_symbols_fd( void **buffer, int size, int fd )
+{
+    FILE    *fp = fdopen( fd, "w" );
+
+    if ( fp )
+    {
+        void **pFramePtr;
+        for ( pFramePtr = buffer; size > 0 && pFramePtr && *pFramePtr; pFramePtr++, size-- )
+        {
+            Dl_info     dli;
+            ptrdiff_t   offset;
+
+            if ( 0 != dladdr( *pFramePtr, &dli ) )
+            {
+                if ( dli.dli_fname && dli.dli_fbase )
+                {
+                    offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_fbase;
+                    fprintf( fp, "%s+0x%" SAL_PRI_PTRDIFFT "x", dli.dli_fname, offset );
+                }
+                if ( dli.dli_sname && dli.dli_saddr )
+                {
+                    offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_saddr;
+                    fprintf( fp, "(%s+0x%" SAL_PRI_PTRDIFFT "x)", dli.dli_sname, offset );
+                }
+            }
+            fprintf( fp, "[%p]\n", *pFramePtr );
+        }
+        fclose( fp );
+    }
+}
+
+#else /* not GNU/BSD/Solaris */
+
+int backtrace( void **buffer, int max_frames )
+{
+    (void)buffer; (void)max_frames;
+    return 0;
+}
+
+char ** backtrace_symbols(void * const * buffer, int size)
+{
+    (void)buffer; (void)size;
+    return NULL; /*TODO*/
+}
+
+void backtrace_symbols_fd( void **buffer, int size, int fd )
+{
+    (void)buffer; (void)size; (void)fd;
+}
+
+#endif /* not GNU/BSD/Solaris */
+
+#endif /* ! HAVE_FEATURE_BACKTRACE */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/backtrace.h b/sal/osl/unx/backtrace.h
new file mode 100644
index 000000000..11a9da52e
--- /dev/null
+++ b/sal/osl/unx/backtrace.h
@@ -0,0 +1,51 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_BACKTRACE_H
+#define INCLUDED_SAL_OSL_UNX_BACKTRACE_H
+
+#include <config_features.h>
+
+#if HAVE_FEATURE_BACKTRACE /* GNU backtrace implementation available */
+
+#include <execinfo.h>
+
+#else
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* backtrace function with same behaviour as defined in GNU libc */
+
+int backtrace( void **buffer, int max_frames );
+
+char ** backtrace_symbols(void * const * buffer, int size);
+
+void backtrace_symbols_fd( void **buffer, int size, int fd );
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/backtraceapi.cxx b/sal/osl/unx/backtraceapi.cxx
new file mode 100644
index 000000000..a4cec46ca
--- /dev/null
+++ b/sal/osl/unx/backtraceapi.cxx
@@ -0,0 +1,279 @@
+/* -*- 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/.
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+#include <cstdlib>
+#include <limits>
+#include <memory>
+#include <mutex>
+
+#include <o3tl/runtimetooustring.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <sal/log.hxx>
+#include <sal/backtrace.hxx>
+
+#include "backtrace.h"
+#include <backtraceasstring.hxx>
+
+OUString osl::detail::backtraceAsString(sal_uInt32 maxDepth) {
+    std::unique_ptr<sal::BacktraceState> backtrace = sal::backtrace_get( maxDepth );
+    return sal::backtrace_to_string( backtrace.get());
+}
+
+std::unique_ptr<sal::BacktraceState> sal::backtrace_get(sal_uInt32 maxDepth)
+{
+    assert(maxDepth != 0);
+    auto const maxInt = static_cast<unsigned int>(
+        std::numeric_limits<int>::max());
+    if (maxDepth > maxInt) {
+        maxDepth = static_cast<sal_uInt32>(maxInt);
+    }
+    auto b1 = new void *[maxDepth];
+    int n = backtrace(b1, static_cast<int>(maxDepth));
+    return std::unique_ptr<BacktraceState>(new BacktraceState{ b1, n });
+}
+
+#if OSL_DEBUG_LEVEL > 0 && (defined LINUX || defined MACOSX || defined FREEBSD || defined NETBSD || defined OPENBSD || defined(DRAGONFLY))
+// The backtrace_symbols() function is unreliable, it requires -rdynamic and even then it cannot resolve names
+// of many functions, such as those with hidden ELF visibility. Libunwind doesn't resolve names for me either,
+// boost::stacktrace doesn't work properly, the best result I've found is addr2line. Using addr2line is relatively
+// slow, but I don't find that to be a big problem for printing of backtraces. Feel free to improve if needed
+// (e.g. the calls could be grouped by the binary).
+#include <dlfcn.h>
+#include <unistd.h>
+#include <vector>
+#include <osl/process.h>
+#include <rtl/strbuf.hxx>
+#include <osl/mutex.hxx>
+#include <o3tl/lru_map.hxx>
+#include "file_url.hxx"
+
+namespace
+{
+struct FrameData
+{
+    const char* file = nullptr;
+    void* addr;
+    ptrdiff_t offset;
+    OString info;
+    bool handled = false;
+};
+
+typedef o3tl::lru_map<void*, OString> FrameCache;
+std::mutex frameCacheMutex;
+FrameCache frameCache( 256 );
+
+void process_file_addr2line( const char* file, std::vector<FrameData>& frameData )
+{
+    if(access( file, R_OK ) != 0)
+        return; // cannot read info from the binary file anyway
+    OUString binary("addr2line");
+    OUString dummy;
+#if defined __clang__
+    // llvm-addr2line is faster than addr2line
+    if(osl::detail::find_in_PATH("llvm-addr2line", dummy))
+        binary = "llvm-addr2line";
+#endif
+    if(!osl::detail::find_in_PATH(binary, dummy))
+        return; // Will not work, avoid warnings from osl process code.
+    OUString arg1("-Cfe");
+    OUString arg2 = OUString::fromUtf8(file);
+    std::vector<OUString> addrs;
+    std::vector<rtl_uString*> args;
+    args.reserve(frameData.size() + 2);
+    args.push_back( arg1.pData );
+    args.push_back( arg2.pData );
+    for( FrameData& frame : frameData )
+    {
+        if( frame.file != nullptr && strcmp( file, frame.file ) == 0 )
+        {
+            addrs.push_back("0x" + OUString::number(frame.offset, 16));
+            args.push_back(addrs.back().pData);
+            frame.handled = true;
+        }
+    }
+
+    oslProcess aProcess;
+    oslFileHandle pOut = nullptr;
+    oslFileHandle pErr = nullptr;
+    oslSecurity pSecurity = osl_getCurrentSecurity();
+    oslProcessError eErr = osl_executeProcess_WithRedirectedIO(
+        binary.pData, args.data(), args.size(), osl_Process_SEARCHPATH | osl_Process_HIDDEN, pSecurity, nullptr,
+        nullptr, 0, &aProcess, nullptr, &pOut, &pErr);
+    osl_freeSecurityHandle(pSecurity);
+
+    if (eErr != osl_Process_E_None)
+    {
+        SAL_WARN("sal.osl", binary << " call to resolve " << file << " symbols failed");
+        return;
+    }
+
+    OStringBuffer outputBuffer;
+    if (pOut)
+    {
+        const sal_uInt64 BUF_SIZE = 1024;
+        char buffer[BUF_SIZE];
+        while (true)
+        {
+            sal_uInt64 bytesRead = 0;
+            while(osl_readFile(pErr, buffer, BUF_SIZE, &bytesRead) == osl_File_E_None
+                && bytesRead != 0)
+                ; // discard possible stderr output
+            oslFileError err = osl_readFile(pOut, buffer, BUF_SIZE, &bytesRead);
+            if(bytesRead == 0 && err == osl_File_E_None)
+                break;
+            outputBuffer.append(buffer, bytesRead);
+            if (err != osl_File_E_None && err != osl_File_E_AGAIN)
+                break;
+        }
+        osl_closeFile(pOut);
+    }
+    if(pErr)
+        osl_closeFile(pErr);
+    eErr = osl_joinProcess(aProcess);
+    osl_freeProcessHandle(aProcess);
+
+    OString output = outputBuffer.makeStringAndClear();
+    std::vector<OString> lines;
+    sal_Int32 outputPos = 0;
+    while(outputPos < output.getLength())
+    {
+        sal_Int32 end1 = output.indexOf('\n', outputPos);
+        if(end1 < 0)
+            break;
+        sal_Int32 end2 = output.indexOf('\n', end1 + 1);
+        if(end2 < 0)
+            end2 = output.getLength();
+        lines.push_back(output.copy( outputPos, end1 - outputPos ));
+        lines.push_back(output.copy( end1 + 1, end2 - end1 - 1 ));
+        outputPos = end2 + 1;
+    }
+    if(lines.size() != addrs.size() * 2)
+    {
+        SAL_WARN("sal.osl", "failed to parse " << binary << " call output to resolve " << file << " symbols ");
+        return; // addr2line problem?
+    }
+    size_t linesPos = 0;
+    for( FrameData& frame : frameData )
+    {
+        if( frame.file != nullptr && strcmp( file, frame.file ) == 0 )
+        {
+            // There should be two lines, first function name and second source file information.
+            // If each of them starts with ??, it is invalid/unknown.
+            OString function = lines[linesPos];
+            OString source = lines[linesPos+1];
+            linesPos += 2;
+            if(function.isEmpty() || function.startsWith("??"))
+            {
+                // Cache that the address cannot be resolved.
+                std::lock_guard guard(frameCacheMutex);
+                frameCache.insert( { frame.addr, "" } );
+            }
+            else
+            {
+                if( source.startsWith("??"))
+                    frame.info = function + " in " + file;
+                else
+                    frame.info = function + " at " + source;
+                std::lock_guard guard(frameCacheMutex);
+                frameCache.insert( { frame.addr, frame.info } );
+            }
+        }
+    }
+}
+
+} // namespace
+
+OUString sal::backtrace_to_string(BacktraceState* backtraceState)
+{
+    // Collect frames for each binary and process each binary in one addr2line
+    // call for better performance.
+    std::vector< FrameData > frameData;
+    frameData.resize(backtraceState->nDepth);
+    for (int i = 0; i != backtraceState->nDepth; ++i)
+    {
+        Dl_info dli;
+        void* addr = backtraceState->buffer[i];
+        std::unique_lock guard(frameCacheMutex);
+        auto it = frameCache.find(addr);
+        bool found = it != frameCache.end();
+        guard.unlock();
+        if( found )
+        {
+            frameData[ i ].info = it->second;
+            frameData[ i ].handled = true;
+        }
+        else if (dladdr(addr, &dli) != 0)
+        {
+            if (dli.dli_fname && dli.dli_fbase)
+            {
+                frameData[ i ].file = dli.dli_fname;
+                frameData[ i ].addr = addr;
+                frameData[ i ].offset = reinterpret_cast<ptrdiff_t>(addr) - reinterpret_cast<ptrdiff_t>(dli.dli_fbase);
+            }
+        }
+    }
+    for (int i = 0; i != backtraceState->nDepth; ++i)
+    {
+        if(frameData[ i ].file != nullptr && !frameData[ i ].handled)
+            process_file_addr2line( frameData[ i ].file, frameData );
+    }
+    OUStringBuffer b3;
+    std::unique_ptr<char*, decltype(free)*> b2{ nullptr, free };
+    bool fallbackInitDone = false;
+    for (int i = 0; i != backtraceState->nDepth; ++i)
+    {
+        if (i != 0)
+            b3.append("\n");
+        b3.append( "#" + OUString::number( i ) + " " );
+        if(!frameData[i].info.isEmpty())
+            b3.append(o3tl::runtimeToOUString(frameData[i].info.getStr()));
+        else
+        {
+            if(!fallbackInitDone)
+            {
+                b2 = std::unique_ptr<char*, decltype(free)*>
+                    {backtrace_symbols(backtraceState->buffer, backtraceState->nDepth), free};
+                fallbackInitDone = true;
+            }
+            if(b2)
+                b3.append(o3tl::runtimeToOUString(b2.get()[i]));
+            else
+                b3.append("??");
+        }
+    }
+    return b3.makeStringAndClear();
+}
+
+#else
+
+OUString sal::backtrace_to_string(BacktraceState* backtraceState)
+{
+    std::unique_ptr<char*, decltype(free)*> b2{backtrace_symbols(backtraceState->buffer, backtraceState->nDepth), free};
+    if (!b2) {
+        return OUString();
+    }
+    OUStringBuffer b3;
+    for (int i = 0; i != backtraceState->nDepth; ++i) {
+        if (i != 0) {
+            b3.append("\n");
+        }
+        b3.append( "#" + OUString::number( i ) + " " );
+        b3.append(o3tl::runtimeToOUString(b2.get()[i]));
+    }
+    return b3.makeStringAndClear();
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/conditn.cxx b/sal/osl/unx/conditn.cxx
new file mode 100644
index 000000000..602240922
--- /dev/null
+++ b/sal/osl/unx/conditn.cxx
@@ -0,0 +1,270 @@
+/* -*- 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 <sal/config.h>
+
+#include <assert.h>
+
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+#include <sal/log.hxx>
+#include <sal/types.h>
+
+#include <osl/conditn.h>
+#include <osl/time.h>
+
+namespace {
+
+struct oslConditionImpl
+{
+    pthread_cond_t  m_Condition;
+    pthread_mutex_t m_Lock;
+    bool            m_State;
+};
+
+}
+
+oslCondition SAL_CALL osl_createCondition()
+{
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    pCond = static_cast<oslConditionImpl*>(malloc(sizeof(oslConditionImpl)));
+
+    if ( pCond == nullptr )
+    {
+        return nullptr;
+    }
+
+    pCond->m_State = false;
+
+    /* init condition variable with default attr. (PTHREAD_PROCESS_PRIVAT) */
+    nRet =  pthread_cond_init(&pCond->m_Condition, PTHREAD_CONDATTR_DEFAULT);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "pthread_cond_init failed: " << UnixErrnoString(nRet) );
+
+        free(pCond);
+        return nullptr;
+    }
+
+    nRet = pthread_mutex_init(&pCond->m_Lock, PTHREAD_MUTEXATTR_DEFAULT);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "pthread_mutex_init failed: " << UnixErrnoString(nRet) );
+
+        nRet = pthread_cond_destroy(&pCond->m_Condition);
+        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "pthread_cond_destroy failed: " << UnixErrnoString(nRet) );
+
+        free(pCond);
+        pCond = nullptr;
+    }
+
+    SAL_INFO( "sal.osl.condition", "osl_createCondition(): " << pCond );
+
+    return static_cast<oslCondition>(pCond);
+}
+
+void SAL_CALL osl_destroyCondition(oslCondition Condition)
+{
+    oslConditionImpl* pCond;
+
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    SAL_INFO( "sal.osl.condition", "osl_destroyCondition(" << pCond << ")" );
+
+    if ( pCond )
+    {
+        int nRet = pthread_cond_destroy(&pCond->m_Condition);
+        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "pthread_cond_destroy failed: " << UnixErrnoString(nRet) );
+        nRet = pthread_mutex_destroy(&pCond->m_Lock);
+        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "pthread_mutex_destroy failed: " << UnixErrnoString(nRet) );
+
+        free(Condition);
+    }
+}
+
+sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
+{
+   oslConditionImpl* pCond;
+   int nRet=0;
+
+   assert(Condition);
+   pCond = static_cast<oslConditionImpl*>(Condition);
+
+   nRet = pthread_mutex_lock(&pCond->m_Lock);
+   if ( nRet != 0 )
+   {
+       SAL_WARN( "sal.osl.condition", "osl_setCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+       return false;
+   }
+
+   pCond->m_State = true;
+   nRet = pthread_cond_broadcast(&pCond->m_Condition);
+   if ( nRet != 0 )
+   {
+       SAL_WARN( "sal.osl.condition", "osl_setCondition(" << pCond << "): pthread_cond_broadcast failed: " << UnixErrnoString(nRet) );
+       // try to unlock the mutex
+       pthread_mutex_unlock(&pCond->m_Lock);
+       return false;
+   }
+
+   nRet = pthread_mutex_unlock(&pCond->m_Lock);
+   if ( nRet != 0 )
+   {
+       SAL_WARN( "sal.osl.condition", "osl_setCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+       return false;
+   }
+
+   SAL_INFO( "sal.osl.condition", "osl_setCondition(" << pCond << ")" );
+
+   return true;
+
+}
+
+sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
+{
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    assert(Condition);
+
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    nRet = pthread_mutex_lock(&pCond->m_Lock);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "osl_resetCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+        return false;
+    }
+
+    pCond->m_State = false;
+
+    nRet = pthread_mutex_unlock(&pCond->m_Lock);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "osl_resetCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+        return false;
+    }
+
+    SAL_INFO( "sal.osl.condition", "osl_resetCondition(" << pCond << ")" );
+
+    return true;
+}
+
+oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition, const TimeValue* pTimeout)
+{
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    assert(Condition);
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    SAL_INFO( "sal.osl.condition", "osl_waitCondition(" << pCond << ")" );
+
+    nRet = pthread_mutex_lock(&pCond->m_Lock);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+        return osl_cond_result_error;
+    }
+
+    if ( pTimeout )
+    {
+        if ( ! pCond->m_State )
+        {
+            struct timeval      tp;
+            struct timespec     to;
+
+            gettimeofday(&tp, nullptr);
+
+            SET_TIMESPEC( to, tp.tv_sec + pTimeout->Seconds,
+                              tp.tv_usec * 1000 + pTimeout->Nanosec );
+
+            /* spurious wake up prevention */
+            do
+            {
+                const int ret = pthread_cond_timedwait(&pCond->m_Condition, &pCond->m_Lock, &to);
+                if ( ret != 0 )
+                {
+                    if ( ret == ETIME || ret == ETIMEDOUT )
+                    {
+                        nRet = pthread_mutex_unlock(&pCond->m_Lock);
+                        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+                        return osl_cond_result_timeout;
+                    }
+                    if ( ret != EINTR )
+                    {
+                        nRet = pthread_mutex_unlock(&pCond->m_Lock);
+                        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+                        return osl_cond_result_error;
+                    }
+                }
+            }
+            while ( !pCond->m_State );
+        }
+    }
+    else
+    {
+        while ( !pCond->m_State )
+        {
+            nRet = pthread_cond_wait(&pCond->m_Condition, &pCond->m_Lock);
+            if ( nRet != 0 )
+            {
+                SAL_WARN( "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_cond_wait failed: " << UnixErrnoString(nRet) );
+                nRet = pthread_mutex_unlock(&pCond->m_Lock);
+                SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+                return osl_cond_result_error;
+            }
+        }
+    }
+
+    nRet = pthread_mutex_unlock(&pCond->m_Lock);
+    SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+    SAL_INFO( "sal.osl.condition", "osl_waitCondition(" << pCond << "): OK" );
+
+    return osl_cond_result_ok;
+}
+
+sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
+{
+    bool State;
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    assert(Condition);
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    nRet = pthread_mutex_lock(&pCond->m_Lock);
+    SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_checkCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+
+    State = pCond->m_State;
+
+    nRet = pthread_mutex_unlock(&pCond->m_Lock);
+    SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_checkCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+    SAL_INFO( "sal.osl.condition", "osl_checkCondition(" << pCond << "): " << (State ? "YES" : "NO") );
+
+    return State;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/createfilehandlefromfd.hxx b/sal/osl/unx/createfilehandlefromfd.hxx
new file mode 100644
index 000000000..bb8a768ef
--- /dev/null
+++ b/sal/osl/unx/createfilehandlefromfd.hxx
@@ -0,0 +1,24 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_CREATEFILEHANDLEFROMFD_HXX
+#define INCLUDED_SAL_OSL_UNX_CREATEFILEHANDLEFROMFD_HXX
+
+#include <sal/config.h>
+
+#include <osl/file.h>
+
+namespace osl::detail
+{
+oslFileHandle createFileHandleFromFD(int fd); // defined in file.cxx
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file.cxx b/sal/osl/unx/file.cxx
new file mode 100644
index 000000000..ac93ffacd
--- /dev/null
+++ b/sal/osl/unx/file.cxx
@@ -0,0 +1,1606 @@
+/* -*- 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 <o3tl/safeint.hxx>
+#include <o3tl/string_view.hxx>
+#include <o3tl/typed_flags_set.hxx>
+#include <sal/log.hxx>
+#include <osl/diagnose.h>
+#include <osl/file.hxx>
+#include <osl/detail/file.h>
+#include <rtl/alloc.h>
+#include <rtl/byteseq.hxx>
+#include <rtl/string.hxx>
+
+#include "system.hxx"
+#include "createfilehandlefromfd.hxx"
+#include "file_error_transl.hxx"
+#include "file_impl.hxx"
+#include "file_url.hxx"
+#include "uunxapi.hxx"
+#include "unixerrnostring.hxx"
+
+#include <algorithm>
+#include <atomic>
+#include <vector>
+#include <cassert>
+#include <limits>
+
+#include <string.h>
+#include <pthread.h>
+#include <sys/mman.h>
+
+#if defined(MACOSX)
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#define HAVE_O_EXLOCK
+
+#include <CoreFoundation/CoreFoundation.h>
+
+#endif /* MACOSX */
+
+#ifdef ANDROID
+#include <osl/detail/android-bootstrap.h>
+#include <android/log.h>
+#include <android/asset_manager.h>
+#endif
+
+namespace {
+
+enum class State
+{
+    Seekable  = 1, /*< default */
+    Readable  = 2, /*< default */
+    Writeable = 4, /*< open() sets, write() requires, else osl_File_E_BADF */
+    Modified  = 8  /*< write() sets, flush() resets  */
+};
+
+}
+
+template<> struct o3tl::typed_flags<State>: o3tl::is_typed_flags<State, 15> {};
+
+namespace {
+
+struct FileHandle_Impl
+{
+    pthread_mutex_t m_mutex;
+    OString         m_strFilePath; /*< holds native file path */
+    int             m_fd;
+
+    enum Kind
+    {
+        KIND_FD = 1,
+        KIND_MEM = 2
+    };
+    int          m_kind;
+    /** State
+     */
+    State m_state;
+
+    sal_uInt64   m_size;    /*< file size */
+    off_t        m_offset;  /*< physical offset from begin of file */
+    // m_fileptr is hit hard in some situations, where the overhead of a mutex starts to show up, so use an atomic
+    std::atomic<off_t> m_fileptr; /*< logical offset from begin of file */
+
+    off_t        m_bufptr;  /*< buffer offset from begin of file */
+    size_t       m_buflen;  /*< buffer filled [0, m_bufsiz - 1] */
+
+    size_t       m_bufsiz;
+    sal_uInt8 *  m_buffer;
+#ifdef ANDROID
+    rtl_String*  m_memstreambuf; /*< used for in-memory streams */
+#endif
+
+    explicit FileHandle_Impl(int fd, Kind kind = KIND_FD, OString path = "<anon>");
+    ~FileHandle_Impl();
+
+    static size_t getpagesize();
+
+    sal_uInt64   getPos() const;
+    void setPos(sal_uInt64 uPos);
+
+    sal_uInt64   getSize() const;
+    oslFileError setSize(sal_uInt64 uSize);
+
+    oslFileError readAt(
+        off_t        nOffset,
+        void*        pBuffer,
+        size_t       nBytesRequested,
+        sal_uInt64*  pBytesRead);
+
+    oslFileError writeAt(
+        off_t        nOffset,
+        void const*  pBuffer,
+        size_t       nBytesToWrite,
+        sal_uInt64*  pBytesWritten);
+
+    oslFileError readFileAt(
+        off_t        nOffset,
+        void*        pBuffer,
+        size_t       nBytesRequested,
+        sal_uInt64*  pBytesRead);
+
+    oslFileError writeFileAt(
+        off_t        nOffset,
+        void const*  pBuffer,
+        size_t       nBytesToWrite,
+        sal_uInt64*  pBytesWritten);
+
+    oslFileError readLineAt(
+        off_t           nOffset,
+        sal_Sequence**  ppSequence,
+        sal_uInt64*     pBytesRead);
+
+    static oslFileError writeSequence_Impl(
+        sal_Sequence**  ppSequence,
+        size_t*         pnOffset,
+        const void*     pBuffer,
+        size_t          nBytes);
+
+    oslFileError syncFile();
+
+    class Guard
+    {
+        pthread_mutex_t *m_mutex;
+
+    public:
+        explicit Guard(pthread_mutex_t *pMutex);
+        ~Guard();
+    };
+};
+
+}
+
+FileHandle_Impl::Guard::Guard(pthread_mutex_t * pMutex)
+    : m_mutex(pMutex)
+{
+    assert(m_mutex);
+    (void) pthread_mutex_lock(m_mutex); // ignoring EINVAL if a null mutex is passed ...
+}
+
+FileHandle_Impl::Guard::~Guard()
+{
+    assert(m_mutex);
+    (void) pthread_mutex_unlock(m_mutex);
+}
+
+FileHandle_Impl::FileHandle_Impl(int fd, enum Kind kind, OString path)
+    : m_strFilePath(std::move(path)),
+      m_fd      (fd),
+      m_kind    (kind),
+      m_state   (State::Seekable | State::Readable),
+      m_size    (0),
+      m_offset  (0),
+      m_fileptr (0),
+      m_bufptr  (-1),
+      m_buflen  (0),
+      m_bufsiz  (0),
+      m_buffer  (nullptr)
+{
+    (void) pthread_mutex_init(&m_mutex, nullptr);
+    if (m_kind == KIND_FD)
+    {
+        size_t const pagesize = getpagesize();
+        if (pagesize != size_t(-1))
+        {
+            m_bufsiz = pagesize;
+            m_buffer = static_cast<sal_uInt8 *>(malloc(m_bufsiz));
+            if (m_buffer)
+                memset(m_buffer, 0, m_bufsiz);
+        }
+    }
+}
+
+FileHandle_Impl::~FileHandle_Impl()
+{
+    if (m_kind == KIND_FD)
+    {
+        free(m_buffer);
+        m_buffer = nullptr;
+    }
+
+    (void) pthread_mutex_destroy(&m_mutex); // ignoring EBUSY ...
+}
+
+size_t FileHandle_Impl::getpagesize()
+{
+    return sal::static_int_cast< size_t >(::sysconf(_SC_PAGESIZE));
+}
+
+sal_uInt64 FileHandle_Impl::getPos() const
+{
+    return sal::static_int_cast< sal_uInt64 >(m_fileptr.load());
+}
+
+void FileHandle_Impl::setPos(sal_uInt64 uPos)
+{
+    m_fileptr = sal::static_int_cast< off_t >(uPos);
+}
+
+sal_uInt64 FileHandle_Impl::getSize() const
+{
+    off_t const bufend = std::max(off_t(0), m_bufptr) + m_buflen;
+    return std::max(m_size, sal::static_int_cast< sal_uInt64 >(bufend));
+}
+
+oslFileError FileHandle_Impl::setSize(sal_uInt64 uSize)
+{
+    off_t const nSize = sal::static_int_cast< off_t >(uSize);
+    if (ftruncate_with_name(m_fd, nSize, m_strFilePath) == -1)
+    {
+        /* Failure. Save original result. Try fallback algorithm */
+        oslFileError result = oslTranslateFileError(errno);
+
+        /* Check against current size. Fail upon 'shrink' */
+        if (uSize <= getSize())
+        {
+            /* Failure upon 'shrink'. Return original result */
+            return result;
+        }
+
+        /* Save current position */
+        off_t const nCurPos = lseek(m_fd, off_t(0), SEEK_CUR);
+        if (nCurPos == off_t(-1))
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "lseek(" << m_fd << ",0,SEEK_CUR): " << UnixErrnoString(e));
+            return result;
+        }
+        else
+            SAL_INFO("sal.file", "lseek(" << m_fd << ",0,SEEK_CUR): OK");
+
+        /* Try 'expand' via 'lseek()' and 'write()' */
+        if (lseek(m_fd, static_cast<off_t>(nSize - 1), SEEK_SET) == -1)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "lseek(" << m_fd << "," << nSize - 1 << ",SEEK_SET): " << UnixErrnoString(e));
+            return result;
+        }
+        else
+            SAL_INFO("sal.file", "lseek(" << m_fd << "," << nSize - 1 << ",SEEK_SET): OK");
+
+        if (write(m_fd, "", size_t(1)) == -1)
+        {
+            /* Failure. Restore saved position */
+            int e = errno;
+            SAL_INFO("sal.file", "write(" << m_fd << ",\"\",1): " << UnixErrnoString(e));
+            (void) lseek(m_fd, nCurPos, SEEK_SET);
+            return result;
+        }
+        else
+            SAL_INFO("sal.file", "write(" << m_fd << ",\"\",1): OK");
+
+        /* Success. Restore saved position */
+        if (lseek(m_fd, nCurPos, SEEK_SET) == -1)
+            return result;
+    }
+
+    m_size = sal::static_int_cast< sal_uInt64 >(nSize);
+    return osl_File_E_None;
+}
+
+oslFileError FileHandle_Impl::readAt(
+    off_t        nOffset,
+    void *       pBuffer,
+    size_t       nBytesRequested,
+    sal_uInt64 * pBytesRead)
+{
+    SAL_WARN_IF(!(m_state & State::Seekable), "sal.osl", "FileHandle_Impl::readAt(): not seekable");
+    if (!(m_state & State::Seekable))
+        return osl_File_E_SPIPE;
+
+    SAL_WARN_IF(!(m_state & State::Readable), "sal.osl", "FileHandle_Impl::readAt(): not readable");
+    if (!(m_state & State::Readable))
+        return osl_File_E_BADF;
+
+    if (m_kind == KIND_MEM)
+    {
+        ssize_t nBytes;
+
+        m_offset = nOffset;
+
+        if (o3tl::make_unsigned(m_offset) >= m_size)
+        {
+            nBytes = 0;
+        }
+        else
+        {
+            nBytes = std::min(nBytesRequested, static_cast<size_t>(m_size - m_offset));
+            memmove(pBuffer, m_buffer + m_offset, nBytes);
+            m_offset += nBytes;
+        }
+        *pBytesRead = nBytes;
+        return osl_File_E_None;
+    }
+
+    ssize_t nBytes = ::pread(m_fd, pBuffer, nBytesRequested, nOffset);
+    if ((nBytes == -1) && (errno == EOVERFLOW))
+    {
+        /* Some 'pread()'s fail with EOVERFLOW when reading at (or past)
+         * end-of-file, different from 'lseek() + read()' behaviour.
+         * Returning '0 bytes read' and 'osl_File_E_None' instead.
+         */
+        nBytes = 0;
+    }
+
+    if (nBytes == -1)
+        return oslTranslateFileError(errno);
+
+    *pBytesRead = nBytes;
+
+    return osl_File_E_None;
+}
+
+oslFileError FileHandle_Impl::writeAt(
+    off_t        nOffset,
+    void const * pBuffer,
+    size_t       nBytesToWrite,
+    sal_uInt64 * pBytesWritten)
+{
+    SAL_WARN_IF(!(m_state & State::Seekable), "sal.osl", "FileHandle_Impl::writeAt(): not seekable");
+    if (!(m_state & State::Seekable))
+        return osl_File_E_SPIPE;
+
+    SAL_WARN_IF(!(m_state & State::Writeable), "sal.osl", "FileHandle_Impl::writeAt(): not writeable");
+    if (!(m_state & State::Writeable))
+        return osl_File_E_BADF;
+
+    ssize_t nBytes = ::pwrite(m_fd, pBuffer, nBytesToWrite, nOffset);
+    if (nBytes == -1)
+        return oslTranslateFileError(errno);
+
+    m_size = std::max(m_size, sal::static_int_cast< sal_uInt64 >(nOffset + nBytes));
+
+    *pBytesWritten = nBytes;
+
+    return osl_File_E_None;
+}
+
+oslFileError FileHandle_Impl::readFileAt(
+    off_t        nOffset,
+    void*        pBuffer,
+    size_t       nBytesRequested,
+    sal_uInt64*  pBytesRead)
+{
+    if (!(m_state & State::Seekable))
+    {
+        // not seekable (pipe)
+        ssize_t nBytes = ::read(m_fd, pBuffer, nBytesRequested);
+        if (nBytes == -1)
+            return oslTranslateFileError(errno);
+
+        *pBytesRead = nBytes;
+
+        return osl_File_E_None;
+    }
+
+    if (m_kind == KIND_MEM || !m_buffer)
+    {
+        // not buffered
+        return readAt(nOffset, pBuffer, nBytesRequested, pBytesRead);
+    }
+
+    sal_uInt8 *buffer = static_cast<sal_uInt8*>(pBuffer);
+    for (*pBytesRead = 0; nBytesRequested > 0; )
+    {
+        off_t  const bufptr = (nOffset / m_bufsiz) * m_bufsiz;
+        size_t const bufpos = nOffset % m_bufsiz;
+
+        if (bufptr != m_bufptr)
+        {
+            // flush current buffer
+            oslFileError result = syncFile();
+            if (result != osl_File_E_None)
+                return result;
+
+            m_bufptr = -1;
+            m_buflen = 0;
+
+            if (nBytesRequested >= m_bufsiz)
+            {
+                // buffer too small, read through from file
+                sal_uInt64 uDone = 0;
+                result = readAt(nOffset, &(buffer[*pBytesRead]), nBytesRequested, &uDone);
+                if (result != osl_File_E_None)
+                    return result;
+
+                *pBytesRead += uDone;
+
+                return osl_File_E_None;
+            }
+
+            // update buffer (pointer)
+            sal_uInt64 uDone = 0;
+            result = readAt(bufptr, m_buffer, m_bufsiz, &uDone);
+            if (result != osl_File_E_None)
+                return result;
+
+            m_bufptr = bufptr;
+            m_buflen = uDone;
+        }
+
+        if (bufpos >= m_buflen)
+        {
+            // end of file
+            return osl_File_E_None;
+        }
+
+        size_t const bytes = std::min(m_buflen - bufpos, nBytesRequested);
+        SAL_INFO("sal.fileio", "FileHandle_Impl::readFileAt(" << m_fd << ", " << nOffset << ", " << bytes << ")");
+
+        memcpy(&(buffer[*pBytesRead]), &(m_buffer[bufpos]), bytes);
+        nBytesRequested -= bytes;
+        *pBytesRead += bytes;
+        nOffset += bytes;
+    }
+
+    return osl_File_E_None;
+}
+
+oslFileError FileHandle_Impl::writeFileAt(
+    off_t        nOffset,
+    void const * pBuffer,
+    size_t       nBytesToWrite,
+    sal_uInt64 * pBytesWritten)
+{
+    if (!(m_state & State::Seekable))
+    {
+        // not seekable (pipe)
+        ssize_t nBytes = ::write(m_fd, pBuffer, nBytesToWrite);
+        if (nBytes == -1)
+            return oslTranslateFileError(errno);
+
+        *pBytesWritten = nBytes;
+
+        return osl_File_E_None;
+    }
+    if (!m_buffer)
+    {
+        // not buffered
+        return writeAt(nOffset, pBuffer, nBytesToWrite, pBytesWritten);
+    }
+
+    sal_uInt8 const * buffer = static_cast<sal_uInt8 const *>(pBuffer);
+    for (*pBytesWritten = 0; nBytesToWrite > 0;)
+    {
+        off_t const bufptr = (nOffset / m_bufsiz) * m_bufsiz;
+        size_t const bufpos = nOffset % m_bufsiz;
+        if (bufptr != m_bufptr)
+        {
+            // flush current buffer
+            oslFileError result = syncFile();
+            if (result != osl_File_E_None)
+                return result;
+            m_bufptr = -1;
+            m_buflen = 0;
+
+            if (nBytesToWrite >= m_bufsiz)
+            {
+                // buffer too small, write through to file
+                sal_uInt64 uDone = 0;
+                result = writeAt(nOffset, &(buffer[*pBytesWritten]), nBytesToWrite, &uDone);
+                if (result != osl_File_E_None)
+                    return result;
+
+                if (uDone != nBytesToWrite)
+                    return osl_File_E_IO;
+
+                *pBytesWritten += uDone;
+
+                return osl_File_E_None;
+            }
+
+            // update buffer (pointer)
+            sal_uInt64 uDone = 0;
+            result = readAt(bufptr, m_buffer, m_bufsiz, &uDone);
+            if (result != osl_File_E_None)
+                return result;
+
+            m_bufptr = bufptr;
+            m_buflen = uDone;
+        }
+
+        size_t const bytes = std::min(m_bufsiz - bufpos, nBytesToWrite);
+        SAL_INFO("sal.fileio", "FileHandle_Impl::writeFileAt(" << m_fd << ", " << nOffset << ", " << bytes << ")");
+
+        memcpy(&(m_buffer[bufpos]), &(buffer[*pBytesWritten]), bytes);
+        nBytesToWrite -= bytes;
+        *pBytesWritten += bytes;
+        nOffset += bytes;
+
+        m_buflen = std::max(m_buflen, bufpos + bytes);
+        m_state |= State::Modified;
+    }
+
+    return osl_File_E_None;
+}
+
+oslFileError FileHandle_Impl::readLineAt(
+    off_t           nOffset,
+    sal_Sequence ** ppSequence,
+    sal_uInt64 *    pBytesRead)
+{
+    oslFileError result = osl_File_E_None;
+
+    off_t bufptr = nOffset / m_bufsiz * m_bufsiz;
+    if (bufptr != m_bufptr)
+    {
+        /* flush current buffer */
+        result = syncFile();
+        if (result != osl_File_E_None)
+            return result;
+
+        /* update buffer (pointer) */
+        sal_uInt64 uDone = 0;
+        result = readAt(bufptr, m_buffer, m_bufsiz, &uDone);
+        if (result != osl_File_E_None)
+            return result;
+
+        m_bufptr = bufptr;
+        m_buflen = uDone;
+    }
+
+    static int const LINE_STATE_BEGIN = 0;
+    static int const LINE_STATE_CR    = 1;
+    static int const LINE_STATE_LF    = 2;
+
+    size_t bufpos = nOffset - m_bufptr, curpos = bufpos, dstpos = 0;
+    int state = (bufpos >= m_buflen) ? LINE_STATE_LF : LINE_STATE_BEGIN;
+
+    while (state != LINE_STATE_LF)
+    {
+        if (curpos >= m_buflen)
+        {
+            /* buffer examined */
+            if ((curpos - bufpos) > 0)
+            {
+                /* flush buffer to sequence */
+                result = writeSequence_Impl(
+                    ppSequence, &dstpos, &(m_buffer[bufpos]), curpos - bufpos);
+                if (result != osl_File_E_None)
+                    return result;
+
+                *pBytesRead += curpos - bufpos;
+                nOffset += curpos - bufpos;
+            }
+
+            bufptr = nOffset / m_bufsiz * m_bufsiz;
+            if (bufptr != m_bufptr)
+            {
+                /* update buffer (pointer) */
+                sal_uInt64 uDone = 0;
+                result = readAt(bufptr, m_buffer, m_bufsiz, &uDone);
+                if (result != osl_File_E_None)
+                    return result;
+
+                m_bufptr = bufptr;
+                m_buflen = uDone;
+            }
+
+            bufpos = nOffset - m_bufptr;
+            curpos = bufpos;
+            if (bufpos >= m_buflen)
+                break;
+        }
+
+        switch (state)
+        {
+        case LINE_STATE_CR:
+            state = LINE_STATE_LF;
+            switch (m_buffer[curpos])
+            {
+            case 0x0A: /* CRLF */
+                /* eat current char */
+                curpos++;
+                break;
+            default: /* single CR */
+                /* keep current char */
+                break;
+            }
+            break;
+        default:
+            /* determine next state */
+            switch (m_buffer[curpos])
+            {
+            case 0x0A: /* single LF */
+                state = LINE_STATE_LF;
+                break;
+            case 0x0D: /* CR */
+                state = LINE_STATE_CR;
+                break;
+            default: /* advance to next char */
+                curpos++;
+                break;
+            }
+            if (state != LINE_STATE_BEGIN)
+            {
+                /* skip the newline char */
+                curpos++;
+
+                /* flush buffer to sequence */
+                result = writeSequence_Impl(
+                    ppSequence, &dstpos, &(m_buffer[bufpos]), curpos - bufpos - 1);
+                if (result != osl_File_E_None)
+                    return result;
+
+                *pBytesRead += curpos - bufpos;
+                nOffset += curpos - bufpos;
+            }
+            break;
+        }
+    }
+
+    result = writeSequence_Impl(ppSequence, &dstpos, nullptr, 0);
+    if (result != osl_File_E_None)
+        return result;
+
+    if (dstpos > 0)
+        return osl_File_E_None;
+
+    if (bufpos >= m_buflen)
+        return osl_File_E_AGAIN;
+
+    return osl_File_E_None;
+}
+
+oslFileError FileHandle_Impl::writeSequence_Impl(
+    sal_Sequence ** ppSequence,
+    size_t *        pnOffset,
+    const void *    pBuffer,
+    size_t          nBytes)
+{
+    sal_Int32 nElements = *pnOffset + nBytes;
+    if (!*ppSequence)
+    {
+        /* construct sequence */
+        rtl_byte_sequence_constructNoDefault(ppSequence, nElements);
+    }
+    else if (nElements != (*ppSequence)->nElements)
+    {
+        /* resize sequence */
+        rtl_byte_sequence_realloc(ppSequence, nElements);
+    }
+
+    if (*ppSequence && nBytes != 0)
+    {
+        /* fill sequence */
+        memcpy(&((*ppSequence)->elements[*pnOffset]), pBuffer, nBytes);
+        *pnOffset += nBytes;
+    }
+
+    return (*ppSequence) ? osl_File_E_None : osl_File_E_NOMEM;
+}
+
+oslFileError FileHandle_Impl::syncFile()
+{
+    oslFileError result = osl_File_E_None;
+    if (m_state & State::Modified)
+    {
+        sal_uInt64 uDone = 0;
+        result = writeAt(m_bufptr, m_buffer, m_buflen, &uDone);
+        if (result != osl_File_E_None)
+            return result;
+
+        if (uDone != m_buflen)
+            return osl_File_E_IO;
+
+        m_state &= ~State::Modified;
+    }
+
+    return result;
+}
+
+oslFileHandle osl::detail::createFileHandleFromFD(int fd)
+{
+    if (fd == -1)
+        return nullptr; // EINVAL
+
+    struct stat aFileStat;
+    if (fstat(fd, &aFileStat) == -1)
+        return nullptr; // EBADF
+
+    FileHandle_Impl *pImpl = new FileHandle_Impl(fd);
+
+    // assume writeable
+    pImpl->m_state |= State::Writeable;
+    if (!S_ISREG(aFileStat.st_mode))
+    {
+        /* not a regular file, mark not seekable */
+        pImpl->m_state &= ~State::Seekable;
+    }
+    else
+    {
+        /* regular file, init current size */
+        pImpl->m_size = sal::static_int_cast< sal_uInt64 >(aFileStat.st_size);
+    }
+
+    SAL_INFO("sal.file", "osl::detail::createFileHandleFromFD(" << pImpl->m_fd << ", writeable) => " << pImpl->m_strFilePath);
+
+    return static_cast<oslFileHandle>(pImpl);
+}
+
+static int osl_file_adjustLockFlags(const OString& path, int flags)
+{
+#ifdef MACOSX
+    /*
+     * The AFP implementation of MacOS X 10.4 treats O_EXLOCK in a way
+     * that makes it impossible for OOo to create a backup copy of the
+     * file it keeps opened. OTOH O_SHLOCK for AFP behaves as desired by
+     * the OOo file handling, so we need to check the path of the file
+     * for the filesystem name.
+     */
+    struct statfs s;
+    if(statfs(path.getStr(), &s) >= 0)
+    {
+        if(strncmp("afpfs", s.f_fstypename, 5) == 0)
+        {
+            flags &= ~O_EXLOCK;
+            flags |=  O_SHLOCK;
+        }
+        else
+        {
+            /* Needed flags to allow opening a webdav file */
+            flags &= ~(O_EXLOCK | O_SHLOCK | O_NONBLOCK);
+        }
+    }
+#else
+    (void) path;
+#endif
+
+    return flags;
+}
+
+static bool osl_file_queryLocking(sal_uInt32 uFlags)
+{
+#if !defined HAVE_O_EXLOCK
+    if (!(uFlags & osl_File_OpenFlag_NoLock)
+        && ((uFlags & osl_File_OpenFlag_Write)
+            || (uFlags & osl_File_OpenFlag_Create)))
+    {
+        static bool enabled = getenv("SAL_ENABLE_FILE_LOCKING") != nullptr;
+            // getenv is not thread safe, so minimize use of result
+        return enabled;
+    }
+#else
+    (void) uFlags;
+#endif
+    return false;
+}
+
+#ifdef HAVE_O_EXLOCK
+#define OPEN_WRITE_FLAGS ( O_RDWR | O_EXLOCK | O_NONBLOCK )
+#define OPEN_CREATE_FLAGS ( O_CREAT | O_RDWR | O_EXLOCK | O_NONBLOCK )
+#else
+#define OPEN_WRITE_FLAGS ( O_RDWR )
+#define OPEN_CREATE_FLAGS ( O_CREAT | O_RDWR )
+#endif
+
+#if defined ANDROID
+
+namespace {
+
+static oslFileError openMemoryAsFile(const OString &rData,
+                                     oslFileHandle *pHandle,
+                                     const OString& path)
+{
+    const char *address = rData.getStr();
+    size_t size = rData.getLength();
+
+    FileHandle_Impl *pImpl = new FileHandle_Impl(-1, FileHandle_Impl::KIND_MEM, path);
+    pImpl->m_size = sal::static_int_cast< sal_uInt64 >(size);
+
+    *pHandle = (oslFileHandle)(pImpl);
+
+    pImpl->m_bufptr = 0;
+    pImpl->m_buflen = size;
+    pImpl->m_memstreambuf = rData.pData;
+    rtl_string_acquire(pImpl->m_memstreambuf);
+
+    pImpl->m_bufsiz = size;
+    pImpl->m_buffer = reinterpret_cast<sal_uInt8*>(const_cast<char *>(address));
+
+    return osl_File_E_None;
+}
+
+/*
+ * Reading files from /assets/ on Android via a transition into the VM
+ * shows on profiles and is rather slow; so we cache small files as
+ * used by UNO, UI-builder etc.
+ */
+class AndroidFileCache {
+public:
+    struct Entry {
+        OString maFilePath;
+        OString maData;
+    };
+    AndroidFileCache(size_t nElements)
+        : mnCur(0)
+    {
+        maEntries.resize(nElements);
+        assert (maEntries.size() == nElements);
+    }
+    Entry *find(const char *cpFilePath)
+    {
+        for (auto &it : maEntries)
+        {
+            if (!strcmp(it.maFilePath.getStr(), cpFilePath))
+                return &it;
+        }
+        return nullptr;
+    }
+    // no clever LRU - but - good enough for now.
+    void insert(const char *cpFilePath, OString &rData)
+    {
+        assert (maEntries.size() > 0);
+        if (++mnCur >= maEntries.size())
+            mnCur = 0;
+        maEntries[mnCur].maFilePath = OString(cpFilePath, strlen(cpFilePath));
+        maEntries[mnCur].maData = rData;
+    }
+    static AndroidFileCache &getHitCache()
+    {
+        static AndroidFileCache *pCache = new AndroidFileCache(16);
+        return *pCache;
+    }
+    static AndroidFileCache &getMissCache()
+    {
+        static AndroidFileCache *pCache = new AndroidFileCache(32);
+        return *pCache;
+    }
+private:
+    size_t             mnCur;
+    std::vector<Entry> maEntries;
+};
+
+} // namespace
+
+#endif
+
+oslFileError openFilePath(const OString& filePath, oslFileHandle* pHandle,
+                          sal_uInt32 uFlags, mode_t mode)
+{
+    oslFileError eRet;
+
+#ifdef ANDROID
+    /* Opening a file from /assets read-only means
+     * we should mmap it from the .apk file
+     */
+    if (o3tl::starts_with(filePath, "/assets/"))
+    {
+        OString aData;
+        bool bCache = true;
+
+        const char *cpAssetsPath = filePath.getStr() + sizeof("/assets/") - 1;
+        // some requests are /assets//foo...
+        if (cpAssetsPath[0] == '/')
+        {
+            __android_log_print(ANDROID_LOG_DEBUG,"libo:sal/osl/unx/file", "double-slash in path: %s", filePath.getStr());
+            cpAssetsPath++;
+        }
+
+        AndroidFileCache::Entry *pHit = AndroidFileCache::getHitCache().find(cpAssetsPath);
+        if (pHit)
+            aData = pHit->maData;
+
+        else
+        {
+            bCache = false;
+            AndroidFileCache::Entry *pMiss = AndroidFileCache::getMissCache().find(cpAssetsPath);
+            if (pMiss)
+            {
+                errno = ENOENT;
+                __android_log_print(ANDROID_LOG_ERROR,"libo:sal/osl/unx/file", "miss cache: failed to open %s", filePath.getStr());
+                return osl_File_E_NOENT;
+            }
+            AAssetManager* mgr = lo_get_native_assetmgr();
+            AAsset* asset = AAssetManager_open(mgr, cpAssetsPath, AASSET_MODE_BUFFER);
+            if (!asset)
+            {
+                AndroidFileCache::getMissCache().insert(cpAssetsPath, aData);
+                errno = ENOENT;
+                __android_log_print(ANDROID_LOG_ERROR,"libo:sal/osl/unx/file", "failed to open %s", filePath.getStr());
+                return osl_File_E_NOENT;
+            }
+            else
+            {
+                rtl_String *pData = nullptr;
+                size_t size = AAsset_getLength(asset);
+                rtl_string_new_WithLength(&pData, size);
+                pData->length = size;
+                AAsset_read(asset, pData->buffer, size);
+                AAsset_close(asset);
+
+                aData = OString(pData, SAL_NO_ACQUIRE);
+
+                if (pData->length < 50 * 1024)
+                    AndroidFileCache::getHitCache().insert(cpAssetsPath, aData);
+            }
+        }
+
+        if (uFlags & osl_File_OpenFlag_Write)
+        {
+            // It seems to work better to silently "open" it read-only
+            // and let write attempts, if any, fail later. Otherwise
+            // loading a document from /assets fails with that idiotic
+            // "General Error" dialog...
+        }
+        SAL_INFO("sal.file", "osl_openFile(" << filePath << ") => '" << cpAssetsPath << "'"
+                 << aData.getLength() << " bytes from file " << (bCache ? "cache" : "system"));
+        return openMemoryAsFile(aData, pHandle, filePath);
+    }
+#endif
+
+    /* set mode and flags */
+    int defmode = (uFlags & osl_File_OpenFlag_Private) ? S_IRUSR : S_IRUSR | S_IRGRP | S_IROTH;
+    int flags = O_RDONLY;
+
+    if (uFlags & osl_File_OpenFlag_Write)
+    {
+        defmode |= (uFlags & osl_File_OpenFlag_Private) ? S_IWUSR : S_IWUSR | S_IWGRP | S_IWOTH;
+        flags = OPEN_WRITE_FLAGS;
+    }
+
+    if (uFlags & osl_File_OpenFlag_Create)
+    {
+        defmode |= (uFlags & osl_File_OpenFlag_Private) ? S_IWUSR : S_IWUSR | S_IWGRP | S_IWOTH;
+        flags = OPEN_CREATE_FLAGS;
+    }
+
+    if (mode == mode_t(-1))
+        mode = defmode;
+
+    /* Check for flags passed in from SvFileStream::Open() */
+    if (uFlags & osl_File_OpenFlag_Trunc)
+        flags |= O_TRUNC;
+
+    if (!(uFlags & osl_File_OpenFlag_NoExcl))
+        flags |= O_EXCL;
+
+    if (uFlags & osl_File_OpenFlag_NoLock)
+    {
+#ifdef HAVE_O_EXLOCK
+        flags &= ~(O_EXLOCK | O_SHLOCK | O_NONBLOCK);
+#endif /* HAVE_O_EXLOCK */
+    }
+    else
+    {
+        flags = osl_file_adjustLockFlags (filePath, flags);
+    }
+
+    // O_EXCL can be set only when O_CREAT is set
+    if (flags & O_EXCL && !(flags & O_CREAT))
+        flags &= ~O_EXCL;
+
+    /* open the file */
+    int fd = open_c( filePath, flags, mode );
+    if (fd == -1)
+    {
+        return oslTranslateFileError(errno);
+    }
+
+#if !HAVE_FEATURE_MACOSX_SANDBOX
+    /* reset O_NONBLOCK flag */
+    if (flags & O_NONBLOCK)
+    {
+        int f = fcntl(fd, F_GETFL, 0);
+        if (f == -1)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "fcntl(" << fd << ",F_GETFL,0): " << UnixErrnoString(e));
+            eRet = oslTranslateFileError(e);
+            (void) close(fd);
+            SAL_INFO("sal.file", "close(" << fd << ")");
+            return eRet;
+        }
+        else
+            SAL_INFO("sal.file", "fcntl(" << fd << ",F_GETFL,0): OK");
+
+        if (fcntl(fd, F_SETFL, (f & ~O_NONBLOCK)) == -1)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "fcntl(" << fd << ",F_SETFL,(f & ~O_NONBLOCK)): " << UnixErrnoString(e));
+            eRet = oslTranslateFileError(e);
+            (void) close(fd);
+            SAL_INFO("sal.file", "close(" << fd << ")");
+            return eRet;
+        }
+        else
+            SAL_INFO("sal.file", "fcntl(" << fd << ",F_SETFL,(f & ~O_NONBLOCK)): OK");
+    }
+#endif
+
+    /* get file status (mode, size) */
+    struct stat aFileStat;
+    if (fstat(fd, &aFileStat) == -1)
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "fstat(" << fd << "): " << UnixErrnoString(e));
+        eRet = oslTranslateFileError(e);
+        (void) close(fd);
+        SAL_INFO("sal.file", "close(" << fd << ")");
+        return eRet;
+    }
+    else
+        SAL_INFO("sal.file", "fstat(" << fd << "): OK");
+
+    if (!S_ISREG(aFileStat.st_mode))
+    {
+        /* we only open regular files here */
+        SAL_INFO("sal.file", "osl_openFile(" << filePath << "): not a regular file");
+        (void) close(fd);
+        SAL_INFO("sal.file", "close(" << fd << ")");
+        return osl_File_E_INVAL;
+    }
+
+    if (osl_file_queryLocking(uFlags))
+    {
+#ifdef MACOSX
+        if (flock(fd, LOCK_EX | LOCK_NB) == -1)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "flock(" << fd << ",LOCK_EX|LOCK_NB): " << UnixErrnoString(e));
+            /* Mac OSX returns ENOTSUP for webdav drives. We should try read lock */
+
+            // Restore errno after possibly having been overwritten by the SAL_INFO above...
+            errno = e;
+            if ((errno != ENOTSUP) || ((flock(fd, LOCK_SH | LOCK_NB) == 1) && (errno != ENOTSUP)))
+            {
+                eRet = oslTranslateFileError(errno);
+                (void) close(fd);
+                SAL_INFO("sal.file", "close(" << fd << ")");
+                return eRet;
+            }
+        }
+        else
+            SAL_INFO("sal.file", "flock(" << fd << ",LOCK_EX|LOCK_NB): OK");
+#else   /* F_SETLK */
+        struct flock aflock;
+
+        aflock.l_type = F_WRLCK;
+        aflock.l_whence = SEEK_SET;
+        aflock.l_start = 0;
+        aflock.l_len = 0;
+
+        if (fcntl(fd, F_SETLK, &aflock) == -1)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "fcntl(" << fd << ",F_SETLK): " << UnixErrnoString(e));
+            eRet = oslTranslateFileError(e);
+            (void) close(fd);
+            SAL_INFO("sal.file", "close(" << fd << ")");
+            return eRet;
+        }
+#endif  /* F_SETLK */
+    }
+
+    /* allocate memory for impl structure */
+    FileHandle_Impl *pImpl = new FileHandle_Impl(fd, FileHandle_Impl::KIND_FD, filePath);
+    if (flags & O_RDWR)
+        pImpl->m_state |= State::Writeable;
+
+    pImpl->m_size = sal::static_int_cast< sal_uInt64 >(aFileStat.st_size);
+
+    *pHandle = static_cast<oslFileHandle>(pImpl);
+
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_openFile(rtl_uString* ustrFileURL, oslFileHandle* pHandle, sal_uInt32 uFlags)
+{
+    return openFile(ustrFileURL, pHandle, uFlags, mode_t(-1));
+}
+
+oslFileError openFile(rtl_uString* ustrFileURL, oslFileHandle* pHandle, sal_uInt32 uFlags, mode_t mode)
+{
+    oslFileError eRet;
+
+    if ((!ustrFileURL) || (ustrFileURL->length == 0) || (!pHandle))
+        return osl_File_E_INVAL;
+
+    /* convert file URL to system path */
+    char buffer[PATH_MAX];
+    eRet = FileURLToPath(buffer, sizeof(buffer), ustrFileURL);
+    if (eRet != osl_File_E_None)
+        return eRet;
+
+#ifdef MACOSX
+    if (macxp_resolveAlias(buffer, sizeof(buffer)) != 0)
+        return oslTranslateFileError(errno);
+#endif /* MACOSX */
+
+    return openFilePath(buffer, pHandle, uFlags, mode);
+}
+
+oslFileError SAL_CALL osl_closeFile(oslFileHandle Handle)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if (!pImpl)
+        return osl_File_E_INVAL;
+
+    if (pImpl->m_kind == FileHandle_Impl::KIND_MEM)
+    {
+#ifdef ANDROID
+        rtl_string_release(pImpl->m_memstreambuf);
+        pImpl->m_memstreambuf = nullptr;
+
+        pImpl->m_buffer = NULL;
+#endif
+        delete pImpl;
+        return osl_File_E_None;
+    }
+
+    if (pImpl->m_fd < 0)
+        return osl_File_E_INVAL;
+
+    (void) pthread_mutex_lock(&(pImpl->m_mutex));
+
+    /* close(2) implicitly (and unconditionally) unlocks */
+    oslFileError result = pImpl->syncFile();
+    if (result != osl_File_E_None)
+    {
+        /* close, ignoring double failure */
+        (void) close(pImpl->m_fd);
+        SAL_INFO("sal.file", "close(" << pImpl->m_fd << ")");
+    }
+    else if (close(pImpl->m_fd) == -1)
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "close(" << pImpl->m_fd << "): " << UnixErrnoString(e));
+        /* translate error code */
+        result = oslTranslateFileError(e);
+    }
+    else
+        SAL_INFO("sal.file", "close(" << pImpl->m_fd << "): OK");
+
+    (void) pthread_mutex_unlock(&(pImpl->m_mutex));
+    delete pImpl;
+    return result;
+}
+
+oslFileError SAL_CALL osl_syncFile(oslFileHandle Handle)
+{
+    FileHandle_Impl* pImpl = static_cast<FileHandle_Impl*>(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)))
+        return osl_File_E_INVAL;
+
+    if (pImpl->m_kind == FileHandle_Impl::KIND_MEM)
+        return osl_File_E_None;
+
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+
+    oslFileError result = pImpl->syncFile();
+
+    if (result != osl_File_E_None)
+        return result;
+
+    if (fsync(pImpl->m_fd) == -1)
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "fsync(" << pImpl->m_fd << "): " << UnixErrnoString(e));
+        return oslTranslateFileError(e);
+    }
+    else
+        SAL_INFO("sal.file", "fsync(" << pImpl->m_fd << "): OK");
+
+    return osl_File_E_None;
+}
+
+const off_t MAX_OFF_T = std::numeric_limits< off_t >::max();
+
+namespace {
+
+// coverity[result_independent_of_operands] - crossplatform requirement
+template<typename T> bool exceedsMaxOffT(T n) { return n > MAX_OFF_T; }
+
+// coverity[result_independent_of_operands] - crossplatform requirement
+template<typename T> bool exceedsMinOffT(T n)
+{ return n < std::numeric_limits<off_t>::min(); }
+
+}
+
+oslFileError SAL_CALL osl_mapFile(
+    oslFileHandle Handle,
+    void**        ppAddr,
+    sal_uInt64    uLength,
+    sal_uInt64    uOffset,
+    sal_uInt32    uFlags
+)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!ppAddr))
+        return osl_File_E_INVAL;
+
+    *ppAddr = nullptr;
+
+    if (uLength > SAL_MAX_SIZE)
+        return osl_File_E_OVERFLOW;
+
+    size_t const nLength = sal::static_int_cast< size_t >(uLength);
+
+    if (exceedsMaxOffT(uOffset))
+        return osl_File_E_OVERFLOW;
+
+    if (pImpl->m_kind == FileHandle_Impl::KIND_MEM)
+    {
+        *ppAddr = pImpl->m_buffer + uOffset;
+        return osl_File_E_None;
+    }
+
+    off_t const nOffset = sal::static_int_cast< off_t >(uOffset);
+
+    void* p = mmap(nullptr, nLength, PROT_READ, MAP_SHARED, pImpl->m_fd, nOffset);
+
+    if (p == MAP_FAILED)
+        return oslTranslateFileError(errno);
+
+    *ppAddr = p;
+
+    if (uFlags & osl_File_MapFlag_RandomAccess)
+    {
+        // Determine memory pagesize.
+        size_t const nPageSize = FileHandle_Impl::getpagesize();
+        if (nPageSize != size_t(-1))
+        {
+            /*
+             * Pagein, touching first byte of every memory page.
+             * Note: volatile disables optimizing the loop away.
+             */
+            sal_uInt8 volatile *pData(static_cast<sal_uInt8*>(*ppAddr));
+            size_t nSize(nLength);
+
+            while (nSize > nPageSize)
+            {
+                pData[0];
+                pData += nPageSize;
+                nSize -= nPageSize;
+            }
+
+            if (nSize > 0)
+                pData[0];
+        }
+    }
+
+    if (uFlags & osl_File_MapFlag_WillNeed)
+    {
+        // On Linux, madvise(..., MADV_WILLNEED) appears to have the undesirable
+        // effect of not returning until the data has actually been paged in, so
+        // that its net effect would typically be to slow down the process
+        // (which could start processing at the beginning of the data while the
+        // OS simultaneously pages in the rest); on other platforms, it remains
+        // to be evaluated whether madvise or equivalent is available and
+        // actually useful:
+#if defined MACOSX || (defined(__sun) && (!defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__)))
+        int e = posix_madvise(p, nLength, POSIX_MADV_WILLNEED);
+        if (e != 0)
+            SAL_INFO("sal.file", "posix_madvise(..., POSIX_MADV_WILLNEED) failed with " << e);
+
+#elif defined __sun
+        if (madvise(static_cast< caddr_t >(p), nLength, MADV_WILLNEED) != 0)
+            SAL_INFO("sal.file", "madvise(..., MADV_WILLNEED) failed with " << UnixErrnoString(errno));
+#endif
+    }
+
+    return osl_File_E_None;
+}
+
+static oslFileError unmapFile(void* pAddr, sal_uInt64 uLength)
+{
+    if (!pAddr)
+        return osl_File_E_INVAL;
+
+    if (uLength > SAL_MAX_SIZE)
+        return osl_File_E_OVERFLOW;
+
+    size_t const nLength = sal::static_int_cast< size_t >(uLength);
+
+    if (munmap(pAddr, nLength) == -1)
+        return oslTranslateFileError(errno);
+
+    return osl_File_E_None;
+}
+
+#ifndef ANDROID
+
+// Note that osl_unmapFile() just won't work on Android in general
+// where for (uncompressed) files inside the .apk, in the /assets
+// folder osl_mapFile just returns a pointer to the file inside the
+// already mmapped .apk archive.
+
+oslFileError SAL_CALL osl_unmapFile(void* pAddr, sal_uInt64 uLength)
+{
+    return unmapFile(pAddr, uLength);
+}
+
+#endif
+
+oslFileError SAL_CALL osl_unmapMappedFile(oslFileHandle Handle, void* pAddr, sal_uInt64 uLength)
+{
+    FileHandle_Impl *pImpl = static_cast<FileHandle_Impl*>(Handle);
+
+    if (!pImpl)
+        return osl_File_E_INVAL;
+
+    if (pImpl->m_kind == FileHandle_Impl::KIND_FD)
+        return unmapFile(pAddr, uLength);
+
+    // For parts of already mmapped "parent" files, whose mapping we
+    // can't change, not much we can or should do...
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_readLine(
+    oslFileHandle   Handle,
+    sal_Sequence ** ppSequence)
+{
+    FileHandle_Impl *pImpl = static_cast<FileHandle_Impl*>(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!ppSequence))
+        return osl_File_E_INVAL;
+
+    sal_uInt64 uBytesRead = 0;
+
+    // read at current fileptr; fileptr += uBytesRead;
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+    oslFileError result = pImpl->readLineAt(pImpl->m_fileptr, ppSequence, &uBytesRead);
+
+    if (result == osl_File_E_None)
+        pImpl->m_fileptr += uBytesRead;
+
+    return result;
+}
+
+oslFileError SAL_CALL osl_readFile(
+    oslFileHandle Handle,
+    void *        pBuffer,
+    sal_uInt64    uBytesRequested,
+    sal_uInt64 *  pBytesRead)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!pBuffer) || (!pBytesRead))
+        return osl_File_E_INVAL;
+
+    static sal_uInt64 const g_limit_ssize_t = std::numeric_limits< ssize_t >::max();
+    if (g_limit_ssize_t < uBytesRequested)
+        return osl_File_E_OVERFLOW;
+
+    size_t const nBytesRequested = sal::static_int_cast< size_t >(uBytesRequested);
+
+    // read at current fileptr; fileptr += *pBytesRead;
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+    oslFileError result = pImpl->readFileAt(pImpl->m_fileptr, pBuffer, nBytesRequested, pBytesRead);
+
+    if (result == osl_File_E_None)
+        pImpl->m_fileptr += *pBytesRead;
+
+    return result;
+}
+
+oslFileError SAL_CALL osl_writeFile(
+    oslFileHandle Handle,
+    const void *  pBuffer,
+    sal_uInt64    uBytesToWrite,
+    sal_uInt64 *  pBytesWritten)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || (pImpl->m_fd == -1) || (!pBuffer) || (!pBytesWritten))
+        return osl_File_E_INVAL;
+
+    if (!(pImpl->m_state & State::Writeable))
+        return osl_File_E_BADF;
+
+    static sal_uInt64 const g_limit_ssize_t = std::numeric_limits< ssize_t >::max();
+    if (g_limit_ssize_t < uBytesToWrite)
+        return osl_File_E_OVERFLOW;
+
+    size_t const nBytesToWrite = sal::static_int_cast< size_t >(uBytesToWrite);
+
+    // write at current fileptr; fileptr += *pBytesWritten;
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+    oslFileError result = pImpl->writeFileAt(pImpl->m_fileptr, pBuffer, nBytesToWrite, pBytesWritten);
+    if (result == osl_File_E_None)
+        pImpl->m_fileptr += *pBytesWritten;
+
+    return result;
+}
+
+oslFileError SAL_CALL osl_readFileAt(
+    oslFileHandle Handle,
+    sal_uInt64    uOffset,
+    void*         pBuffer,
+    sal_uInt64    uBytesRequested,
+    sal_uInt64*   pBytesRead)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!pBuffer) || (!pBytesRead))
+        return osl_File_E_INVAL;
+
+    if (!(pImpl->m_state & State::Seekable))
+        return osl_File_E_SPIPE;
+
+    if (exceedsMaxOffT(uOffset))
+        return osl_File_E_OVERFLOW;
+
+    off_t const nOffset = sal::static_int_cast< off_t >(uOffset);
+
+    static sal_uInt64 const g_limit_ssize_t = std::numeric_limits< ssize_t >::max();
+    if (g_limit_ssize_t < uBytesRequested)
+        return osl_File_E_OVERFLOW;
+
+    size_t const nBytesRequested = sal::static_int_cast< size_t >(uBytesRequested);
+
+    // read at specified fileptr
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+
+    return pImpl->readFileAt(nOffset, pBuffer, nBytesRequested, pBytesRead);
+}
+
+oslFileError SAL_CALL osl_writeFileAt(
+    oslFileHandle Handle,
+    sal_uInt64    uOffset,
+    const void*   pBuffer,
+    sal_uInt64    uBytesToWrite,
+    sal_uInt64*   pBytesWritten)
+{
+    FileHandle_Impl* pImpl = static_cast<FileHandle_Impl*>(Handle);
+
+    if ((!pImpl) || (pImpl->m_fd == -1) || (!pBuffer) || (!pBytesWritten))
+        return osl_File_E_INVAL;
+
+    if (!(pImpl->m_state & State::Seekable))
+        return osl_File_E_SPIPE;
+
+    if (!(pImpl->m_state & State::Writeable))
+        return osl_File_E_BADF;
+
+    if (exceedsMaxOffT(uOffset))
+        return osl_File_E_OVERFLOW;
+
+    off_t const nOffset = sal::static_int_cast< off_t >(uOffset);
+
+    static sal_uInt64 const g_limit_ssize_t = std::numeric_limits< ssize_t >::max();
+    if (g_limit_ssize_t < uBytesToWrite)
+        return osl_File_E_OVERFLOW;
+
+    size_t const nBytesToWrite = sal::static_int_cast< size_t >(uBytesToWrite);
+
+    // write at specified fileptr
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+
+    return pImpl->writeFileAt(nOffset, pBuffer, nBytesToWrite, pBytesWritten);
+}
+
+oslFileError SAL_CALL osl_isEndOfFile(oslFileHandle Handle, sal_Bool *pIsEOF)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!pIsEOF))
+        return osl_File_E_INVAL;
+
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+    *pIsEOF = (pImpl->getPos() == pImpl->getSize());
+
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_getFilePos(oslFileHandle Handle, sal_uInt64* pPos)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!pPos))
+        return osl_File_E_INVAL;
+
+    // no need to lock because pos is atomic
+    *pPos = pImpl->getPos();
+
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_setFilePos(oslFileHandle Handle, sal_uInt32 uHow, sal_Int64 uOffset)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)))
+        return osl_File_E_INVAL;
+
+    if (exceedsMaxOffT(uOffset) || exceedsMinOffT(uOffset))
+        return osl_File_E_OVERFLOW;
+
+    off_t nPos = 0, nOffset = sal::static_int_cast< off_t >(uOffset);
+
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+    switch (uHow)
+    {
+        case osl_Pos_Absolut:
+            if (nOffset < 0)
+                return osl_File_E_INVAL;
+            break;
+
+        case osl_Pos_Current:
+            nPos = sal::static_int_cast< off_t >(pImpl->getPos());
+            if ((nOffset < 0) && (nPos < -1*nOffset))
+                return osl_File_E_INVAL;
+
+            assert(nPos >= 0);
+            if (nOffset > MAX_OFF_T - nPos)
+                return osl_File_E_OVERFLOW;
+            break;
+
+        case osl_Pos_End:
+            nPos = sal::static_int_cast< off_t >(pImpl->getSize());
+            if ((nOffset < 0) && (nPos < -1*nOffset))
+                return osl_File_E_INVAL;
+
+            assert(nPos >= 0);
+            if (nOffset > MAX_OFF_T - nPos)
+                return osl_File_E_OVERFLOW;
+            break;
+
+        default:
+            return osl_File_E_INVAL;
+    }
+
+    pImpl->setPos(nPos + nOffset);
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_getFileSize(oslFileHandle Handle, sal_uInt64* pSize)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || ((pImpl->m_kind == FileHandle_Impl::KIND_FD) && (pImpl->m_fd == -1)) || (!pSize))
+        return osl_File_E_INVAL;
+
+    FileHandle_Impl::Guard lock(&(pImpl->m_mutex));
+    *pSize = pImpl->getSize();
+
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_setFileSize(oslFileHandle Handle, sal_uInt64 uSize)
+{
+    FileHandle_Impl* pImpl = static_cast< FileHandle_Impl* >(Handle);
+
+    if ((!pImpl) || (pImpl->m_fd == -1))
+        return osl_File_E_INVAL;
+
+    if (!(pImpl->m_state & State::Writeable))
+        return osl_File_E_BADF;
+
+    if (exceedsMaxOffT(uSize))
+        return osl_File_E_OVERFLOW;
+
+    oslFileError result = pImpl->syncFile();
+    if (result != osl_File_E_None)
+        return result;
+
+    pImpl->m_bufptr = -1;
+    pImpl->m_buflen = 0;
+
+    return pImpl->setSize(uSize);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_error_transl.cxx b/sal/osl/unx/file_error_transl.cxx
new file mode 100644
index 000000000..ad6e00558
--- /dev/null
+++ b/sal/osl/unx/file_error_transl.cxx
@@ -0,0 +1,181 @@
+/* -*- 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 <sal/config.h>
+
+#include <cassert>
+#include <cerrno>
+
+#include "file_error_transl.hxx"
+
+oslFileError oslTranslateFileError(int Errno)
+{
+    switch (Errno)
+    {
+        case EPERM:
+            return osl_File_E_PERM;
+
+        case ENOENT:
+            return osl_File_E_NOENT;
+
+        case ESRCH:
+            return osl_File_E_SRCH;
+
+        case EINTR:
+            return osl_File_E_INTR;
+
+        case EIO:
+            return osl_File_E_IO;
+
+        case ENXIO:
+            return osl_File_E_IO;
+
+        case E2BIG:
+            return osl_File_E_2BIG;
+
+        case ENOEXEC:
+            return osl_File_E_NOEXEC;
+
+        case EBADF:
+            return osl_File_E_BADF;
+
+        case ECHILD:
+            return osl_File_E_CHILD;
+
+        case EAGAIN:
+            return osl_File_E_AGAIN;
+
+        case ENOMEM:
+            return osl_File_E_NOMEM;
+
+        case EACCES:
+            return osl_File_E_ACCES;
+
+        case EFAULT:
+            return osl_File_E_FAULT;
+
+        case EBUSY:
+            return osl_File_E_BUSY;
+
+        case EEXIST:
+            return osl_File_E_EXIST;
+
+        case EXDEV:
+            return osl_File_E_XDEV;
+
+        case ENODEV:
+            return osl_File_E_NODEV;
+
+        case ENOTDIR:
+            return osl_File_E_NOTDIR;
+
+        case EISDIR:
+            return osl_File_E_ISDIR;
+
+        case EINVAL:
+            return osl_File_E_INVAL;
+
+        case ENFILE:
+            return osl_File_E_NFILE;
+
+        case EMFILE:
+            return osl_File_E_MFILE;
+
+        case ENOTTY:
+            return osl_File_E_NOTTY;
+
+        case EFBIG:
+            return osl_File_E_FBIG;
+
+        case ENOSPC:
+            return osl_File_E_NOSPC;
+
+        case ESPIPE:
+            return osl_File_E_SPIPE;
+
+        case EROFS:
+            return osl_File_E_ROFS;
+
+        case EMLINK:
+            return osl_File_E_MLINK;
+
+        case EPIPE:
+            return osl_File_E_PIPE;
+
+        case EDOM:
+            return osl_File_E_DOM;
+
+        case ERANGE:
+            return osl_File_E_RANGE;
+
+        case EDEADLK:
+            return osl_File_E_DEADLK;
+
+        case ENAMETOOLONG:
+            return osl_File_E_NAMETOOLONG;
+
+        case ENOLCK:
+            return osl_File_E_NOLCK;
+
+        case ENOSYS:
+        case ENOTSUP:
+#if EOPNOTSUPP != ENOTSUP
+        case EOPNOTSUPP:
+#endif
+            return osl_File_E_NOSYS;
+
+#if !defined(AIX) || !(defined(_ALL_SOURCE) && !defined(_LINUX_SOURCE_COMPAT))
+        case ENOTEMPTY:
+            return osl_File_E_NOTEMPTY;
+#endif
+
+        case ELOOP:
+            return osl_File_E_LOOP;
+
+#if !(defined(MACOSX) || defined(NETBSD) || defined(FREEBSD) || defined(OPENBSD)                   \
+      || defined(DRAGONFLY))
+        case EILSEQ:
+            return osl_File_E_ILSEQ;
+
+        case ENOLINK:
+            return osl_File_E_NOLINK;
+
+        case EMULTIHOP:
+            return osl_File_E_MULTIHOP;
+#endif /* MACOSX */
+
+#if !defined(HAIKU)
+        case EUSERS:
+            return osl_File_E_USERS;
+#endif
+
+        case EOVERFLOW:
+            return osl_File_E_OVERFLOW;
+
+        case ETIMEDOUT:
+            return osl_File_E_TIMEDOUT;
+
+        default:
+            assert(Errno != 0);
+            /* FIXME translateFileError: is this alright? Or add a new one: osl_File_E_Unknown? */
+            return osl_File_E_invalidError;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_error_transl.hxx b/sal/osl/unx/file_error_transl.hxx
new file mode 100644
index 000000000..81d972032
--- /dev/null
+++ b/sal/osl/unx/file_error_transl.hxx
@@ -0,0 +1,37 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_FILE_ERROR_TRANSL_HXX
+#define INCLUDED_SAL_OSL_UNX_FILE_ERROR_TRANSL_HXX
+
+#include <osl/file.h>
+#include <sal/types.h>
+
+/** Translate errno's to osl file errors
+
+   @param [in] nErrno   the errno; must not be 0
+
+   @returns the osl error code appropriate to the errno
+
+*/
+oslFileError oslTranslateFileError(int Errno);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_impl.hxx b/sal/osl/unx/file_impl.hxx
new file mode 100644
index 000000000..2b374cb68
--- /dev/null
+++ b/sal/osl/unx/file_impl.hxx
@@ -0,0 +1,55 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_FILE_IMPL_HXX
+#define INCLUDED_SAL_OSL_UNX_FILE_IMPL_HXX
+
+#include <osl/file.h>
+#include <stddef.h>
+#include <sys/types.h>
+#include <rtl/string.hxx>
+
+struct DirectoryItem_Impl
+{
+    OString       m_strFilePath;       /* holds native file name */
+    sal_Int32     m_RefCount;
+    unsigned char m_DType;
+
+    explicit DirectoryItem_Impl(
+        OString strFilePath, unsigned char DType = 0);
+    ~DirectoryItem_Impl();
+
+    void acquire(); /* @see osl_acquireDirectoryItem() */
+    void release(); /* @see osl_releaseDirectoryItem() */
+
+    oslFileType getFileType() const;
+};
+
+oslFileError openFile(
+    rtl_uString * pustrFileURL, oslFileHandle * pHandle, sal_uInt32 uFlags,
+    mode_t mode);
+
+oslFileError openFilePath(
+    const OString& filePath,
+    oslFileHandle* pHandle,
+    sal_uInt32 uFlags, mode_t mode );
+
+#endif // INCLUDED_SAL_OSL_UNX_FILE_IMPL_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_misc.cxx b/sal/osl/unx/file_misc.cxx
new file mode 100644
index 000000000..b2d6010fe
--- /dev/null
+++ b/sal/osl/unx/file_misc.cxx
@@ -0,0 +1,1049 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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 <osl/file.hxx>
+#include <osl/detail/file.h>
+
+#include <osl/diagnose.h>
+#include <osl/thread.h>
+#include <osl/signal.h>
+#include <rtl/alloc.h>
+#include <rtl/string.hxx>
+#include <sal/log.hxx>
+
+#include "system.hxx"
+#include "file_impl.hxx"
+#include "file_error_transl.hxx"
+#include "file_path_helper.hxx"
+#include "file_url.hxx"
+#include "uunxapi.hxx"
+#include "readwrite_helper.hxx"
+#include "unixerrnostring.hxx"
+
+#include <sys/types.h>
+#include <errno.h>
+#include <dirent.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <algorithm>
+#include <cassert>
+#include <cstring>
+#include <memory>
+#include <new>
+
+#ifdef ANDROID
+#include <osl/detail/android-bootstrap.h>
+#endif
+
+/************************************************************************
+ *   TODO
+ *
+ *   - Fix: check for corresponding struct sizes in exported functions
+ *   - check size/use of oslDirectory
+ *   - check size/use of oslDirectoryItem
+ ***********************************************************************/
+
+namespace {
+
+struct DirectoryImpl
+{
+    OString strPath;           /* holds native directory path */
+    DIR*         pDirStruct;
+#ifdef ANDROID
+    enum Kind
+    {
+        KIND_DIRENT = 1,
+        KIND_ASSETS = 2
+    };
+    int eKind;
+    lo_apk_dir*  pApkDirStruct;
+#endif
+};
+
+}
+
+DirectoryItem_Impl::DirectoryItem_Impl(
+    OString strFilePath, unsigned char DType)
+    : m_strFilePath (std::move(strFilePath)),
+      m_RefCount     (1),
+      m_DType        (DType)
+{
+}
+DirectoryItem_Impl::~DirectoryItem_Impl()
+{
+}
+
+void DirectoryItem_Impl::acquire()
+{
+    ++m_RefCount;
+}
+void DirectoryItem_Impl::release()
+{
+    if (--m_RefCount == 0)
+        delete this;
+}
+
+oslFileType DirectoryItem_Impl::getFileType() const
+{
+    switch (m_DType)
+    {
+#ifdef _DIRENT_HAVE_D_TYPE
+        case DT_LNK:
+            return osl_File_Type_Link;
+        case DT_DIR:
+            return osl_File_Type_Directory;
+        case DT_REG:
+            return osl_File_Type_Regular;
+        case DT_FIFO:
+            return osl_File_Type_Fifo;
+        case DT_SOCK:
+            return osl_File_Type_Socket;
+        case DT_CHR:
+        case DT_BLK:
+            return osl_File_Type_Special;
+#endif /* _DIRENT_HAVE_D_TYPE */
+        default:
+            break;
+    }
+    return osl_File_Type_Unknown;
+}
+
+static oslFileError osl_psz_createDirectory(
+    char const * pszPath, sal_uInt32 flags);
+static oslFileError osl_psz_removeDirectory(const char* pszPath);
+
+oslFileError SAL_CALL osl_openDirectory(rtl_uString* ustrDirectoryURL, oslDirectory* pDirectory)
+{
+    oslFileError eRet;
+
+    OString path;
+
+    if ((ustrDirectoryURL == nullptr) || (ustrDirectoryURL->length == 0) || (pDirectory == nullptr))
+        return osl_File_E_INVAL;
+
+    /* convert file URL to system path */
+    eRet = osl::detail::convertUrlToPathname(OUString::unacquired(&ustrDirectoryURL), &path);
+
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+    osl_systemPathRemoveSeparator(path.pData);
+
+#ifdef MACOSX
+    {
+        auto const n = std::max(int(path.getLength() + 1), int(PATH_MAX));
+        auto const tmp = std::make_unique<char[]>(n);
+        std::strcpy(tmp.get(), path.getStr());
+        if (macxp_resolveAlias(tmp.get(), n) != 0) {
+            return oslTranslateFileError(errno);
+        }
+        path = OString(tmp.get(), std::strlen(tmp.get()));
+    }
+#endif /* MACOSX */
+
+#ifdef ANDROID
+    if( strncmp( path.getStr(), "/assets/", sizeof( "/assets/" ) - 1) == 0 )
+    {
+        lo_apk_dir *pdir = lo_apk_opendir( path.getStr() );
+
+        if( pdir )
+        {
+            DirectoryImpl* pDirImpl = new(std::nothrow) DirectoryImpl;
+
+            if( pDirImpl )
+            {
+                pDirImpl->eKind = DirectoryImpl::KIND_ASSETS;
+                pDirImpl->pApkDirStruct = pdir;
+                pDirImpl->strPath = path;
+
+                *pDirectory = (oslDirectory) pDirImpl;
+                return osl_File_E_None;
+            }
+            else
+            {
+                errno = ENOMEM;
+                lo_apk_closedir( pdir );
+            }
+        }
+    }
+    else
+#endif
+    {
+        /* open directory */
+        DIR *pdir = opendir( path.getStr() );
+
+        if( pdir )
+        {
+            SAL_INFO("sal.file", "opendir(" << path << ") => " << pdir);
+
+            /* create and initialize impl structure */
+            DirectoryImpl* pDirImpl = new(std::nothrow) DirectoryImpl;
+
+            if( pDirImpl )
+            {
+                pDirImpl->pDirStruct = pdir;
+                pDirImpl->strPath = path;
+#ifdef ANDROID
+                pDirImpl->eKind = DirectoryImpl::KIND_DIRENT;
+#endif
+                *pDirectory = static_cast<oslDirectory>(pDirImpl);
+                return osl_File_E_None;
+            }
+            errno = ENOMEM;
+            closedir( pdir );
+        }
+        else
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "opendir(" << path << "): " << UnixErrnoString(e));
+            // Restore errno after possible modification by SAL_INFO above
+            errno = e;
+        }
+    }
+
+    return oslTranslateFileError(errno);
+}
+
+oslFileError SAL_CALL osl_closeDirectory(oslDirectory pDirectory)
+{
+    SAL_WARN_IF(!pDirectory, "sal.file", "pDirectory is nullptr");
+    DirectoryImpl* pDirImpl = static_cast<DirectoryImpl*>(pDirectory);
+    oslFileError err = osl_File_E_None;
+
+    if (!pDirImpl)
+        return osl_File_E_INVAL;
+
+#ifdef ANDROID
+    if (pDirImpl->eKind == DirectoryImpl::KIND_ASSETS)
+    {
+        if (lo_apk_closedir(pDirImpl->pApkDirStruct))
+            err = osl_File_E_IO;
+    }
+    else
+#endif
+    {
+        if (closedir( pDirImpl->pDirStruct) != 0)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "closedir(" << pDirImpl->pDirStruct << "): " << UnixErrnoString(e));
+            err = oslTranslateFileError(e);
+        }
+        else
+            SAL_INFO("sal.file", "closedir(" << pDirImpl->pDirStruct << "): OK");
+    }
+
+    delete pDirImpl;
+
+    return err;
+}
+
+/**********************************************
+ * osl_readdir_impl_
+ *
+ * readdir wrapper, filters out "." and ".."
+ * on request
+ *********************************************/
+
+static struct dirent* osl_readdir_impl_(DIR* pdir)
+{
+    struct dirent* pdirent;
+
+    while ((pdirent = readdir(pdir)) != nullptr)
+    {
+        if ((strcmp(pdirent->d_name, ".") == 0) || (strcmp(pdirent->d_name, "..") == 0))
+            continue;
+        break;
+    }
+
+    return pdirent;
+}
+
+oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory pDirectory,
+        oslDirectoryItem* pItem, SAL_UNUSED_PARAMETER sal_uInt32 /*uHint*/)
+{
+    SAL_WARN_IF(!pDirectory, "sal.file", "pDirectory is nullptr");
+    SAL_WARN_IF(!pItem, "sal.file", "pItem is nullptr");
+
+    DirectoryImpl* pDirImpl = static_cast<DirectoryImpl*>(pDirectory);
+    OString strFileName;
+    struct dirent* pEntry;
+
+    if ((pDirectory == nullptr) || (pItem == nullptr))
+        return osl_File_E_INVAL;
+
+#ifdef ANDROID
+    if(pDirImpl->eKind == DirectoryImpl::KIND_ASSETS)
+    {
+        pEntry = lo_apk_readdir(pDirImpl->pApkDirStruct);
+    }
+    else
+#endif
+    {
+        pEntry = osl_readdir_impl_(pDirImpl->pDirStruct);
+    }
+
+    if (!pEntry)
+        return osl_File_E_NOENT;
+
+    char const * filename = pEntry->d_name;
+
+#if defined(MACOSX)
+    // convert decomposed filename to precomposed UTF-8
+    char composed_name[BUFSIZ];
+    CFMutableStringRef strRef = CFStringCreateMutable(nullptr, 0 );
+    CFStringAppendCString(strRef, filename, kCFStringEncodingUTF8);  // UTF8 is default on Mac OSX
+    CFStringNormalize(strRef, kCFStringNormalizationFormC);
+    CFStringGetCString(strRef, composed_name, BUFSIZ, kCFStringEncodingUTF8);
+    CFRelease(strRef);
+    filename = composed_name;
+#endif
+
+    strFileName = OString(filename, strlen(filename));
+
+    auto const strFilePath = osl::systemPathMakeAbsolutePath(pDirImpl->strPath, strFileName);
+
+    DirectoryItem_Impl* pImpl = static_cast< DirectoryItem_Impl* >(*pItem);
+    if (pImpl)
+    {
+        pImpl->release();
+        pImpl = nullptr;
+    }
+#ifdef _DIRENT_HAVE_D_TYPE
+    pImpl = new DirectoryItem_Impl(std::move(strFilePath), pEntry->d_type);
+#else
+    pImpl = new DirectoryItem_Impl(std::move(strFilePath));
+#endif /* _DIRENT_HAVE_D_TYPE */
+    *pItem = pImpl;
+
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_getDirectoryItem(rtl_uString* ustrFileURL, oslDirectoryItem* pItem)
+{
+    OString strSystemPath;
+    oslFileError osl_error = osl_File_E_INVAL;
+
+    if ((!ustrFileURL) || (ustrFileURL->length == 0) || (!pItem))
+        return osl_File_E_INVAL;
+
+    osl_error = osl::detail::convertUrlToPathname(OUString::unacquired(&ustrFileURL), &strSystemPath);
+    if (osl_error != osl_File_E_None)
+        return osl_error;
+
+    osl_systemPathRemoveSeparator(strSystemPath.pData);
+
+    if (osl::access(strSystemPath, F_OK) == -1)
+    {
+        osl_error = oslTranslateFileError(errno);
+    }
+    else
+    {
+        *pItem = new DirectoryItem_Impl(std::move(strSystemPath));
+    }
+
+    return osl_error;
+}
+
+oslFileError SAL_CALL osl_acquireDirectoryItem( oslDirectoryItem Item )
+{
+    DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item);
+    if (pImpl == nullptr)
+        return osl_File_E_INVAL;
+
+    pImpl->acquire();
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_releaseDirectoryItem( oslDirectoryItem Item )
+{
+    DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item);
+    if (pImpl == nullptr)
+        return osl_File_E_INVAL;
+
+    pImpl->release();
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_createDirectory( rtl_uString* ustrDirectoryURL )
+{
+    return osl_createDirectoryWithFlags(
+        ustrDirectoryURL, osl_File_OpenFlag_Read | osl_File_OpenFlag_Write);
+}
+
+oslFileError osl_createDirectoryWithFlags(
+    rtl_uString * ustrDirectoryURL, sal_uInt32 flags)
+{
+    char path[PATH_MAX];
+    oslFileError eRet;
+
+    SAL_WARN_IF((!ustrDirectoryURL) || (ustrDirectoryURL->length == 0),
+                "sal.file", "Invalid directory URL");
+
+    /* convert directory url to system path */
+    eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return osl_psz_createDirectory( path, flags );
+}
+
+oslFileError SAL_CALL osl_removeDirectory( rtl_uString* ustrDirectoryURL )
+{
+    char path[PATH_MAX];
+    oslFileError eRet;
+
+    SAL_WARN_IF((!ustrDirectoryURL) || (ustrDirectoryURL->length == 0),
+                "sal.file", "Invalid directory URL");
+
+    /* convert directory url to system path */
+    eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return osl_psz_removeDirectory( path );
+}
+
+oslFileError osl_psz_createDirectory(char const * pszPath, sal_uInt32 flags)
+{
+    int nRet=0;
+    int mode
+        = (((flags & osl_File_OpenFlag_Read) == 0
+            ? 0
+            : ((flags & osl_File_OpenFlag_Private) == 0
+               ? S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH
+               : S_IRUSR | S_IXUSR))
+           | ((flags & osl_File_OpenFlag_Write) == 0
+              ? 0
+              : ((flags & osl_File_OpenFlag_Private) == 0
+                 ? S_IWUSR | S_IWGRP | S_IWOTH
+                 : S_IWUSR)));
+
+    nRet = mkdir(pszPath,mode);
+
+    if ( nRet < 0 )
+    {
+        nRet=errno;
+        SAL_INFO("sal.file", "mkdir(" << pszPath << ",0" << std::oct << mode << std::dec << "): " << UnixErrnoString(nRet));
+        return oslTranslateFileError(nRet);
+    }
+    else
+        SAL_INFO("sal.file", "mkdir(" << pszPath << ",0" << std::oct << mode << std::dec << "): OK");
+
+    return osl_File_E_None;
+}
+
+static oslFileError osl_psz_removeDirectory( const char* pszPath )
+{
+    int nRet = rmdir(pszPath);
+
+    if ( nRet < 0 )
+    {
+        nRet=errno;
+        SAL_INFO("sal.file", "rmdir(" << pszPath << "): " << UnixErrnoString(nRet));
+        return oslTranslateFileError(nRet);
+    }
+    else
+        SAL_INFO("sal.file", "rmdir(" << pszPath << "): OK");
+
+    return osl_File_E_None;
+}
+
+static int path_make_parent(char* path)
+{
+    int i = rtl_str_lastIndexOfChar(path, '/');
+
+    if (i > 0)
+    {
+        *(path + i) = 0;
+        return i;
+    }
+    return 0;
+}
+
+static int create_dir_with_callback(
+    char* directory_path,
+    oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
+    void* pData)
+{
+    if (osl::mkdir(directory_path, S_IRWXU | S_IRWXG | S_IRWXO) == 0)
+    {
+        if (aDirectoryCreationCallbackFunc)
+        {
+            OUString url;
+            osl::detail::convertPathnameToUrl(directory_path, &url);
+            aDirectoryCreationCallbackFunc(pData, url.pData);
+        }
+        return 0;
+    }
+    return errno;
+}
+
+static oslFileError create_dir_recursively_(
+    char* dir_path,
+    oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
+    void* pData)
+{
+    OSL_PRECOND((rtl_str_getLength(dir_path) > 0) && ((dir_path + (rtl_str_getLength(dir_path) - 1)) != (dir_path + rtl_str_lastIndexOfChar(dir_path, '/'))),
+    "Path must not end with a slash");
+
+    int native_err = create_dir_with_callback(
+        dir_path, aDirectoryCreationCallbackFunc, pData);
+
+    if (native_err == 0)
+        return osl_File_E_None;
+
+    if (native_err != ENOENT)
+        return oslTranslateFileError(native_err);
+
+    // we step back until '/a_dir' at maximum because
+    // we should get an error unequal ENOENT when
+    // we try to create 'a_dir' at '/' and would so
+    // return before
+    int pos = path_make_parent(dir_path);
+
+    oslFileError osl_error = create_dir_recursively_(
+        dir_path, aDirectoryCreationCallbackFunc, pData);
+
+    if (osl_error != osl_File_E_None && osl_error != osl_File_E_EXIST)
+        return osl_error;
+
+    dir_path[pos] = '/';
+
+    return create_dir_recursively_(dir_path, aDirectoryCreationCallbackFunc, pData);
+}
+
+oslFileError SAL_CALL osl_createDirectoryPath(
+    rtl_uString* aDirectoryUrl,
+    oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc,
+    void* pData)
+{
+    if (aDirectoryUrl == nullptr)
+        return osl_File_E_INVAL;
+
+    OString sys_path;
+    oslFileError osl_error = osl::detail::convertUrlToPathname(
+        OUString::unacquired(&aDirectoryUrl), &sys_path);
+
+    if (osl_error != osl_File_E_None)
+        return osl_error;
+
+    osl::systemPathRemoveSeparator(sys_path);
+
+    // const_cast because sys_path is a local copy which we want to modify inplace instead of
+    // copy it into another buffer on the heap again
+    return create_dir_recursively_(sys_path.pData->buffer, aDirectoryCreationCallbackFunc, pData);
+}
+
+static oslFileError osl_unlinkFile(const char* pszPath);
+static oslFileError osl_psz_copyFile(const char* pszPath, const char* pszDestPath, bool preserveMetadata);
+static oslFileError osl_psz_moveFile(const char* pszPath, const char* pszDestPath);
+
+static oslFileError  oslDoCopy(const char* pszSourceFileName, const char* pszDestFileName, mode_t nMode, size_t nSourceSize, bool DestFileExists);
+static void attemptChangeMetadata(const char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID);
+static int           oslDoCopyLink(const char* pszSourceFileName, const char* pszDestFileName);
+static int           oslDoCopyFile(const char* pszSourceFileName, const char* pszDestFileName, size_t nSourceSize, mode_t mode);
+static oslFileError  oslDoMoveFile(const char* pszPath, const char* pszDestPath);
+
+oslFileError SAL_CALL osl_moveFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL )
+{
+    char srcPath[PATH_MAX];
+    char destPath[PATH_MAX];
+    oslFileError eRet;
+
+    SAL_WARN_IF((!ustrFileURL) || (ustrFileURL->length == 0), "sal.file", "Invalid source file URL");
+    SAL_WARN_IF((!ustrDestURL) || (ustrDestURL->length == 0), "sal.file", "Invalid destination file URL");
+
+    /* convert source url to system path */
+    eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+    /* convert destination url to system path */
+    eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( srcPath, PATH_MAX ) != 0 || macxp_resolveAlias( destPath, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return oslDoMoveFile( srcPath, destPath );
+}
+
+oslFileError SAL_CALL osl_replaceFile(rtl_uString* ustrFileURL, rtl_uString* ustrDestURL)
+{
+    int nGid = -1;
+    char destPath[PATH_MAX];
+    oslFileError eRet = FileURLToPath(destPath, PATH_MAX, ustrDestURL);
+    if (eRet == osl_File_E_None)
+    {
+        struct stat aFileStat;
+        // coverity[fs_check_call] - unavoidable TOCTOU
+        int nRet = stat(destPath, &aFileStat);
+        if (nRet == -1)
+        {
+            nRet = errno;
+            SAL_INFO("sal.file", "stat(" << destPath << "): " << UnixErrnoString(nRet));
+        }
+        else
+        {
+            nGid = aFileStat.st_gid;
+        }
+    }
+
+    eRet = osl_moveFile(ustrFileURL, ustrDestURL);
+
+    if (eRet == osl_File_E_None && nGid != -1)
+    {
+        int nRet = chown(destPath, -1, nGid);
+        if (nRet == -1)
+        {
+            nRet = errno;
+            SAL_INFO("sal.file",
+                     "chown(" << destPath << "-1, " << nGid << "): " << UnixErrnoString(nRet));
+        }
+    }
+
+    return eRet;
+}
+
+oslFileError SAL_CALL osl_copyFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL )
+{
+    char srcPath[PATH_MAX];
+    char destPath[PATH_MAX];
+    oslFileError eRet;
+
+    SAL_WARN_IF((!ustrFileURL) || (ustrFileURL->length == 0), "sal.file", "Invalid source file URL");
+    SAL_WARN_IF((!ustrDestURL) || (ustrDestURL->length == 0), "sal.file", "Invalid destination file URL");
+
+    /* convert source url to system path */
+    eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+    /* convert destination url to system path */
+    eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( srcPath, PATH_MAX ) != 0 || macxp_resolveAlias( destPath, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return osl_psz_copyFile( srcPath, destPath, false );
+}
+
+oslFileError SAL_CALL osl_removeFile(rtl_uString* ustrFileURL)
+{
+    char path[PATH_MAX];
+    oslFileError eRet;
+
+    SAL_WARN_IF(!ustrFileURL || ustrFileURL->length == 0, "sal.file", "Invalid file URL");
+
+    /* convert file url to system path */
+    eRet = FileURLToPath(path, PATH_MAX, ustrFileURL);
+    if (eRet != osl_File_E_None)
+        return eRet;
+
+#ifdef MACOSX
+    if (macxp_resolveAlias(path, PATH_MAX) != 0)
+      return oslTranslateFileError(errno);
+#endif/* MACOSX */
+
+    return osl_unlinkFile(path);
+}
+
+static oslFileError oslDoMoveFile(const char* pszPath, const char* pszDestPath)
+{
+    oslFileError tErr = osl_psz_moveFile(pszPath,pszDestPath);
+    if (tErr == osl_File_E_None)
+        return tErr;
+
+    if (tErr != osl_File_E_XDEV)
+        return tErr;
+
+    tErr = osl_psz_copyFile(pszPath,pszDestPath, true);
+
+    if (tErr != osl_File_E_None)
+    {
+        osl_unlinkFile(pszDestPath);
+        return tErr;
+    }
+
+    tErr = osl_unlinkFile(pszPath);
+
+    return tErr;
+}
+
+static oslFileError osl_unlinkFile(const char* pszPath)
+{
+    int nRet=0;
+    struct stat aStat;
+
+    nRet = lstat_c(pszPath,&aStat);
+    if (nRet < 0)
+    {
+        nRet=errno;
+        return oslTranslateFileError(nRet);
+    }
+
+    if (S_ISDIR(aStat.st_mode))
+        return osl_File_E_ISDIR;
+
+    nRet = unlink(pszPath);
+    if (nRet < 0)
+    {
+        nRet=errno;
+        SAL_INFO("sal.file", "unlink(" << pszPath << "): " << UnixErrnoString(nRet));
+        return oslTranslateFileError(nRet);
+    }
+    else
+        SAL_INFO("sal.file", "unlink(" << pszPath << "): OK");
+
+    return osl_File_E_None;
+}
+
+static oslFileError osl_psz_moveFile(const char* pszPath, const char* pszDestPath)
+{
+    int nRet = rename(pszPath,pszDestPath);
+
+    if (nRet < 0)
+    {
+        nRet=errno;
+        SAL_INFO("sal.file", "rename(" << pszPath << "," << pszDestPath << "): " << UnixErrnoString(nRet));
+        return oslTranslateFileError(nRet);
+    }
+    else
+        SAL_INFO("sal.file", "rename(" << pszPath << "," << pszDestPath << "): OK");
+
+    return osl_File_E_None;
+}
+
+static oslFileError osl_psz_copyFile( const char* pszPath, const char* pszDestPath, bool preserveMetadata )
+{
+    time_t nAcTime=0;
+    time_t nModTime=0;
+    uid_t nUID=0;
+    gid_t nGID=0;
+    int nRet=0;
+    mode_t nMode=0;
+    struct stat aFileStat;
+    oslFileError tErr=osl_File_E_invalidError;
+    size_t nSourceSize=0;
+    bool DestFileExists=true;
+
+    /* mfe: does the source file really exists? */
+    nRet = lstat_c(pszPath,&aFileStat);
+
+    if (nRet < 0)
+    {
+        nRet=errno;
+        return oslTranslateFileError(nRet);
+    }
+
+    /* we do only copy files here */
+    if (S_ISDIR(aFileStat.st_mode))
+        return osl_File_E_ISDIR;
+
+    nSourceSize = static_cast< size_t >(aFileStat.st_size);
+    nMode = aFileStat.st_mode;
+    nAcTime = aFileStat.st_atime;
+    nModTime = aFileStat.st_mtime;
+    nUID = aFileStat.st_uid;
+    nGID = aFileStat.st_gid;
+
+    nRet = stat_c(pszDestPath,&aFileStat);
+    if (nRet < 0)
+    {
+        nRet=errno;
+
+#ifdef IOS
+        // Checking for nonexistent files at least in the iCloud cache directory (like
+        // "/private/var/mobile/Library/Mobile Documents/com~apple~CloudDocs/helloodt0.odt" fails
+        // with EPERM, not ENOENT.
+        if (nRet == EPERM)
+            DestFileExists=false;
+#endif
+
+        if (nRet == ENOENT)
+            DestFileExists=false;
+    }
+
+    /* mfe: the destination file must not be a directory! */
+    if (nRet == 0 && S_ISDIR(aFileStat.st_mode))
+        return osl_File_E_ISDIR;
+
+    /* mfe: file does not exists or is no dir */
+
+    tErr = oslDoCopy(pszPath, pszDestPath, nMode, nSourceSize, DestFileExists);
+
+    if (tErr != osl_File_E_None)
+        return tErr;
+
+    if (preserveMetadata)
+        attemptChangeMetadata(pszDestPath, nMode, nAcTime, nModTime, nUID, nGID);
+
+    return tErr;
+}
+
+static oslFileError oslDoCopy(const char* pszSourceFileName, const char* pszDestFileName, mode_t nMode, size_t nSourceSize, bool DestFileExists)
+{
+    int      nRet=0;
+
+    OString tmpDestFile;
+    if ( DestFileExists )
+    {
+        //TODO: better pick a temp file name instead of adding .osl-tmp:
+        // use the destination file to avoid EXDEV /* Cross-device link */
+        tmpDestFile = pszDestFileName + OString::Concat(".osl-tmp");
+        if (rename(pszDestFileName, tmpDestFile.getStr()) != 0)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "rename(" << pszDestFileName << ", " << tmpDestFile
+                     << "): " << UnixErrnoString(e));
+            if (e == ENOENT)
+            {
+                DestFileExists = false;
+            }
+            else
+            {
+                return osl_File_E_EXIST; // for want of a better error code
+            }
+        }
+        else
+        {
+            SAL_INFO("sal.file", "rename(" << pszDestFileName << ", " << tmpDestFile
+                     << "): OK");
+        }
+    }
+
+    /* mfe: should be S_ISREG */
+    if ( !S_ISLNK(nMode) )
+    {
+        /* copy SourceFile to DestFile */
+        nRet = oslDoCopyFile(pszSourceFileName,pszDestFileName,nSourceSize, nMode);
+    }
+    /* mfe: OK redundant at the moment */
+    else if ( S_ISLNK(nMode) )
+    {
+        nRet = oslDoCopyLink(pszSourceFileName,pszDestFileName);
+    }
+    else
+    {
+        /* mfe: what to do here? */
+        nRet=ENOSYS;
+    }
+
+    if ( nRet > 0 && DestFileExists )
+    {
+        if (unlink(pszDestFileName) != 0)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "unlink(" << pszDestFileName << "): " << UnixErrnoString(e));
+        }
+        else
+            SAL_INFO("sal.file", "unlink(" << pszDestFileName << "): OK");
+
+        if (rename(tmpDestFile.getStr(), pszDestFileName) != 0)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "rename(" << tmpDestFile << ", " << pszDestFileName
+                     << "): " << UnixErrnoString(e));
+        }
+        else
+            SAL_INFO("sal.file", "rename(" << tmpDestFile << ", " << pszDestFileName << "): OK");
+    }
+
+    if ( nRet > 0 )
+    {
+        return oslTranslateFileError(nRet);
+    }
+
+    if ( DestFileExists )
+    {
+        unlink(tmpDestFile.getStr());
+    }
+
+    return osl_File_E_None;
+}
+
+void attemptChangeMetadata( const char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID)
+{
+    struct utimbuf aTimeBuffer;
+
+#if !defined AT_FDCWD
+    if (!S_ISLNK(nMode) && chmod(pszFileName, nMode) < 0)
+#else
+    if ( fchmodat(AT_FDCWD, pszFileName, nMode, AT_SYMLINK_NOFOLLOW) < 0 )
+#endif
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "chmod(" << pszFileName << ",0" << std::oct << nMode << std::dec <<"): " << UnixErrnoString(e));
+    }
+    else
+        SAL_INFO("sal.file", "chmod(" << pszFileName << ",0" << std::oct << nMode << std::dec <<"): OK");
+
+    // No way to change utime of a symlink itself:
+    if (!S_ISLNK(nMode))
+    {
+        aTimeBuffer.actime=nAcTime;
+        aTimeBuffer.modtime=nModTime;
+        if ( utime(pszFileName,&aTimeBuffer) < 0 )
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "utime(" << pszFileName << "): errno " << e);
+        }
+    }
+
+    if ( nUID != getuid() )
+    {
+        nUID=getuid();
+    }
+    if ( lchown(pszFileName,nUID,nGID) < 0 )
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "lchown(" << pszFileName << "): errno " << e);
+    }
+    else
+        SAL_INFO("sal.file", "lchown(" << pszFileName << "): OK");
+}
+
+static int oslDoCopyLink(const char* pszSourceFileName, const char* pszDestFileName)
+{
+    int nRet=0;
+
+    /* mfe: if dest file is symbolic link remove the link and place the file instead (hro says so) */
+    /* mfe: if source is a link copy the link and not the file it points to (hro says so) */
+    char pszLinkContent[PATH_MAX+1];
+
+    pszLinkContent[0] = '\0';
+
+    nRet = readlink(pszSourceFileName,pszLinkContent,PATH_MAX);
+
+    if ( nRet < 0 )
+    {
+        nRet=errno;
+        return nRet;
+    }
+
+    pszLinkContent[ nRet ] = 0;
+
+    nRet = symlink(pszLinkContent,pszDestFileName);
+
+    if ( nRet < 0 )
+    {
+        nRet=errno;
+        return nRet;
+    }
+
+    return 0;
+}
+
+static int oslDoCopyFile(const char* pszSourceFileName, const char* pszDestFileName, size_t nSourceSize, mode_t mode)
+{
+    oslFileHandle SourceFileFH=nullptr;
+    int DestFileFD=0;
+    int nRet=0;
+
+    if (openFilePath(pszSourceFileName,
+                         &SourceFileFH,
+                         osl_File_OpenFlag_Read|osl_File_OpenFlag_NoLock|osl_File_OpenFlag_NoExcl, mode_t(-1)) != osl_File_E_None)
+    {
+        // Let's hope errno is still set relevantly after openFilePath...
+        nRet=errno;
+        return nRet;
+    }
+
+    DestFileFD=open(pszDestFileName, O_WRONLY | O_CREAT, mode);
+
+    if ( DestFileFD < 0 )
+    {
+        nRet=errno;
+        SAL_INFO("sal.file", "open(" << pszDestFileName << ",O_WRONLY|O_CREAT,0" << std::oct << mode << std::dec << "): " << UnixErrnoString(nRet));
+        osl_closeFile(SourceFileFH);
+        return nRet;
+    }
+    else
+        SAL_INFO("sal.file", "open(" << pszDestFileName << ",O_WRONLY|O_CREAT,0" << std::oct << mode << std::dec << "): OK");
+
+    size_t nRemains = nSourceSize;
+
+    if ( nRemains )
+    {
+        /* mmap has problems, try the direct streaming */
+        char pBuffer[0x7FFF];
+
+        do
+        {
+            size_t nToRead = std::min( sizeof(pBuffer), nRemains );
+            sal_uInt64 nRead;
+            bool succeeded;
+            if ( osl_readFile( SourceFileFH, pBuffer, nToRead, &nRead ) != osl_File_E_None || nRead > nToRead || nRead == 0 )
+                break;
+
+            succeeded = safeWrite( DestFileFD, pBuffer, nRead );
+            if ( !succeeded )
+                break;
+
+            // We know nRead <= nToRead, so it must fit in a size_t
+            nRemains -= static_cast<size_t>(nRead);
+        }
+        while( nRemains );
+    }
+
+    if ( nRemains )
+    {
+        if ( errno )
+            nRet = errno;
+        else
+            nRet = ENOSPC;
+    }
+
+    osl_closeFile( SourceFileFH );
+    if ( close( DestFileFD ) == -1 )
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "close(" << DestFileFD << "): " << UnixErrnoString(e));
+        if ( nRet == 0 )
+            nRet = e;
+    }
+    else
+        SAL_INFO("sal.file", "close(" << DestFileFD << "): OK");
+
+    return nRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_path_helper.cxx b/sal/osl/unx/file_path_helper.cxx
new file mode 100644
index 000000000..a8ee5238f
--- /dev/null
+++ b/sal/osl/unx/file_path_helper.cxx
@@ -0,0 +1,262 @@
+/* -*- 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 <sal/config.h>
+
+#include <cassert>
+#include <utility>
+
+#include "file_path_helper.hxx"
+#include "uunxapi.hxx"
+
+#include <osl/diagnose.h>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+
+const sal_Unicode FPH_CHAR_PATH_SEPARATOR = '/';
+const sal_Unicode FPH_CHAR_DOT            = '.';
+const sal_Unicode FPH_CHAR_COLON          = ':';
+
+void osl_systemPathRemoveSeparator(rtl_String* pstrPath)
+{
+    OSL_PRECOND(nullptr != pstrPath, "osl_systemPathRemoveSeparator: Invalid parameter");
+    if (pstrPath == nullptr)
+        return;
+
+    // maybe there are more than one separator at end
+    // so we run in a loop
+    while ((pstrPath->length > 1) && (pstrPath->buffer[pstrPath->length - 1] == FPH_CHAR_PATH_SEPARATOR))
+    {
+        pstrPath->length--;
+        pstrPath->buffer[pstrPath->length] = '\0';
+    }
+
+    SAL_WARN_IF( !((0 == pstrPath->length) || (1 == pstrPath->length) ||
+                 (pstrPath->length > 1 && pstrPath->buffer[pstrPath->length - 1] != FPH_CHAR_PATH_SEPARATOR)),
+                 "sal.osl",
+                 "osl_systemPathRemoveSeparator: Post condition failed");
+}
+
+namespace {
+
+template<typename T> void systemPathEnsureSeparator(T* ppstrPath)
+{
+    assert(nullptr != ppstrPath);
+    sal_Int32    lp = ppstrPath->getLength();
+    sal_Int32    i  = ppstrPath->lastIndexOf(FPH_CHAR_PATH_SEPARATOR);
+
+    if ((lp > 1 && i != (lp - 1)) || ((lp < 2) && i < 0))
+    {
+        *ppstrPath += "/";
+    }
+
+    SAL_WARN_IF( !ppstrPath->endsWith("/"),
+                 "sal.osl",
+                 "systemPathEnsureSeparator: Post condition failed");
+}
+
+}
+
+bool osl_systemPathIsRelativePath(const rtl_uString* pustrPath)
+{
+    OSL_PRECOND(nullptr != pustrPath, "osl_systemPathIsRelativePath: Invalid parameter");
+    return ((pustrPath == nullptr) || (pustrPath->length == 0) || (pustrPath->buffer[0] != FPH_CHAR_PATH_SEPARATOR));
+}
+
+namespace {
+
+template<typename T> T systemPathMakeAbsolutePath_(
+    const T& BasePath,
+    const T& RelPath)
+{
+    T base(BasePath);
+
+    if (!base.isEmpty())
+        systemPathEnsureSeparator(&base);
+
+    return base + RelPath;
+}
+
+}
+
+OString osl::systemPathMakeAbsolutePath(
+    const OString& BasePath,
+    const OString& RelPath)
+{
+    return systemPathMakeAbsolutePath_(BasePath, RelPath);
+}
+
+OUString osl::systemPathMakeAbsolutePath(
+    const OUString& BasePath,
+    const OUString& RelPath)
+{
+    return systemPathMakeAbsolutePath_(BasePath, RelPath);
+}
+
+void osl_systemPathGetFileNameOrLastDirectoryPart(
+    const rtl_String*     pstrPath,
+    rtl_String**       ppstrFileNameOrLastDirPart)
+{
+    OSL_PRECOND(pstrPath && ppstrFileNameOrLastDirPart,
+                "osl_systemPathGetFileNameOrLastDirectoryPart: Invalid parameter");
+
+    OString path(const_cast<rtl_String*>(pstrPath));
+
+    osl_systemPathRemoveSeparator(path.pData);
+
+    OString last_part;
+
+    if (path.getLength() > 1 || (path.getLength() == 1 && path[0] != FPH_CHAR_PATH_SEPARATOR))
+    {
+        sal_Int32 idx_ps = path.lastIndexOf(FPH_CHAR_PATH_SEPARATOR);
+        idx_ps++; // always right to increment by one even if idx_ps == -1!
+        last_part = path.copy(idx_ps);
+    }
+    rtl_string_assign(ppstrFileNameOrLastDirPart, last_part.pData);
+}
+
+bool osl_systemPathIsHiddenFileOrDirectoryEntry(
+    const rtl_String* pstrPath)
+{
+    OSL_PRECOND(nullptr != pstrPath, "osl_systemPathIsHiddenFileOrDirectoryEntry: Invalid parameter");
+    if ((pstrPath == nullptr) || (pstrPath->length == 0))
+        return false;
+
+    OString fdp;
+    osl_systemPathGetFileNameOrLastDirectoryPart(pstrPath, &fdp.pData);
+
+    return ((fdp.pData->length > 0) &&
+            (fdp.pData->buffer[0] == FPH_CHAR_DOT) &&
+            !osl_systemPathIsLocalOrParentDirectoryEntry(fdp.pData));
+}
+
+bool osl_systemPathIsLocalOrParentDirectoryEntry(
+    const rtl_String* pstrPath)
+{
+    OSL_PRECOND(pstrPath, "osl_systemPathIsLocalOrParentDirectoryEntry: Invalid parameter");
+
+    OString dirent;
+
+    osl_systemPathGetFileNameOrLastDirectoryPart(pstrPath, &dirent.pData);
+
+    return (dirent == "." ||
+            dirent == "..");
+}
+
+namespace {
+
+/** Simple iterator for a path list separated by the specified character
+*/
+class path_list_iterator
+{
+public:
+
+    /* after construction get_current_item
+       returns the first path in list, no need
+       to call reset first
+     */
+    path_list_iterator(OUString path_list, sal_Unicode list_separator = FPH_CHAR_COLON) :
+        m_path_list(std::move(path_list)),
+        m_end(m_path_list.getStr() + m_path_list.getLength() + 1),
+        m_separator(list_separator)
+    {
+        reset();
+    }
+
+    path_list_iterator(const path_list_iterator&) = delete;
+    path_list_iterator& operator=(const path_list_iterator&) = delete;
+
+    void reset()
+    {
+        m_path_segment_begin = m_path_segment_end = m_path_list.getStr();
+        advance();
+    }
+
+    void next()
+    {
+        OSL_PRECOND(!done(), "path_list_iterator: Already done!");
+
+        m_path_segment_begin = ++m_path_segment_end;
+        advance();
+    }
+
+    bool done() const
+    {
+        return (m_path_segment_end >= m_end);
+    }
+
+    OUString get_current_item() const
+    {
+        return OUString(
+            m_path_segment_begin,
+            (m_path_segment_end - m_path_segment_begin));
+    }
+
+private:
+    /* move m_path_end to the next separator or
+       to the end of the string
+     */
+    void advance()
+    {
+        while (!done() && *m_path_segment_end && (*m_path_segment_end != m_separator))
+            ++m_path_segment_end;
+
+        OSL_ASSERT(m_path_segment_end <= m_end);
+    }
+
+private:
+    OUString            m_path_list;
+    const sal_Unicode*  m_end;
+    const sal_Unicode   m_separator;
+    const sal_Unicode*  m_path_segment_begin;
+    const sal_Unicode*  m_path_segment_end;
+};
+
+}
+
+bool osl_searchPath(
+    const rtl_uString* pustrFilePath,
+    const rtl_uString* pustrSearchPathList,
+    rtl_uString**      ppustrPathFound)
+{
+    OSL_PRECOND(pustrFilePath && pustrSearchPathList && ppustrPathFound, "osl_searchPath: Invalid parameter");
+
+    bool               bfound = false;
+    OUString      fp(const_cast<rtl_uString*>(pustrFilePath));
+    OUString      pl(const_cast<rtl_uString*>(pustrSearchPathList));
+    path_list_iterator pli(pl);
+
+    while (!pli.done())
+    {
+        OUString p = pli.get_current_item();
+        systemPathEnsureSeparator(&p);
+        p += fp;
+
+        if (osl::access(osl::OUStringToOString(p), F_OK) > -1)
+        {
+            bfound = true;
+            rtl_uString_assign(ppustrPathFound, p.pData);
+            break;
+        }
+        pli.next();
+    }
+    return bfound;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_path_helper.hxx b/sal/osl/unx/file_path_helper.hxx
new file mode 100644
index 000000000..e210b27a3
--- /dev/null
+++ b/sal/osl/unx/file_path_helper.hxx
@@ -0,0 +1,251 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_FILE_PATH_HELPER_HXX
+#define INCLUDED_SAL_OSL_UNX_FILE_PATH_HELPER_HXX
+
+#include <sal/types.h>
+#include <rtl/ustring.h>
+#include <rtl/ustring.hxx>
+
+/**
+   Removes the last separator from the given system path if any and if the path
+   is not the root path '/'
+
+   @param  ppstrPath[inout]    a system path if the path is not the root path
+                                and the last character is a path separator it
+                                will be cut off ppstrPath must not be NULL and
+                                must point to a valid rtl_String
+
+   @returns nothing
+
+*/
+void osl_systemPathRemoveSeparator(rtl_String* pstrPath);
+
+/**
+   Returns true if the given path is a relative path and so starts not with '/'
+
+   @param  pustrPath [in]       a system path - must not be NULL
+
+   @retval  sal_True    the given path doesn't start with a separator
+   @retval  sal_False   the given path starts with a separator
+
+*/
+bool osl_systemPathIsRelativePath(
+    const rtl_uString* pustrPath);
+
+/**
+   Returns the file or the directory part of the given path
+
+   @param pstrPath [in]        a system path, must not be NULL
+
+   @param ppstrFileOrDirPart [out] on return receives the last part of the
+                                given directory or the file name if pstrPath is the
+                                root path '/' an empty string will be returned if
+                                pstrPath has a trailing '/' the last part before the
+                                '/' will be returned else the part after the last '/'
+                                will be returned
+
+   @returns nothing
+
+*/
+void osl_systemPathGetFileNameOrLastDirectoryPart(
+    const rtl_String*  pstrPath,
+    rtl_String**       ppstrFileNameOrLastDirPart);
+
+/**
+   @param   pustrPath [in] a system path, must not be NULL
+
+   @retval  sal_True the last part of the given system path starts with '.'
+   @retval  sal_False the last part of the given system path is '.' or '..'
+                alone or doesn't start with a dot
+
+*/
+bool osl_systemPathIsHiddenFileOrDirectoryEntry(
+    const rtl_String* pustrPath);
+
+/************************************************
+   osl_systemPathIsLocalOrParentDirectoryEntry
+   Returns sal_True if the last part of the given
+   system path is the local directory entry '.'
+   or the parent directory entry '..'
+
+   @param   pstrPath [in] a system path,
+            must not be NULL
+
+   @returns sal_True if the last part of the
+            given system path is '.' or '..'
+            else sal_False
+
+************************************************/
+
+bool osl_systemPathIsLocalOrParentDirectoryEntry(
+    const rtl_String* pstrPath);
+
+/************************************************
+   osl_searchPath
+   Searches for a file name or path name in all
+   directories specified by a given path list.
+   Symbolic links in the resulting path will not be
+   resolved, it's up to the caller to do this.
+
+   @param   pustrFilePath [in] a file name or
+            directory name to search for, the name must
+            be provided as system path not as a file URL
+
+   @param   pustrSearchPathList [in] a ':'
+            separated list of paths in which to search for
+            the file or directory name
+
+   @param   ppustrPathFound [out] on success receives the
+            complete path of the file or directory found
+            as a system path
+
+   @returns sal_True if the specified file or
+   directory was found else sal_False
+ ***********************************************/
+
+bool osl_searchPath(
+    const rtl_uString* pustrFilePath,
+    const rtl_uString* pustrSearchPathList,
+    rtl_uString**      ppustrPathFound);
+
+namespace osl
+{
+
+ /*******************************************
+    systemPathRemoveSeparator
+    Removes the last separator from the
+    given system path if any and if the path
+    is not the root path '/'
+
+    @param  ppustrPath [inout] a system path
+            if the path is not the root path
+            and the last character is a
+            path separator it will be cut off
+               ppustrPath must not be NULL and
+            must point to a valid rtl_uString
+
+    @returns nothing
+
+  ******************************************/
+
+ inline void systemPathRemoveSeparator(/*inout*/ OString& Path)
+ {
+     osl_systemPathRemoveSeparator(Path.pData);
+ }
+
+ /*******************************************
+    systemPathIsRelativePath
+    Returns true if the given path is a
+    relative path and so starts not with '/'
+
+    @param  pustrPath [in] a system path
+            pustrPath must not be NULL
+
+    @returns sal_True if the given path
+             doesn't start with a separator
+             else sal_False will be returned
+
+  ******************************************/
+
+ inline bool systemPathIsRelativePath(const OUString& Path)
+ {
+    return osl_systemPathIsRelativePath(Path.pData);
+ }
+
+ /******************************************
+    systemPathMakeAbsolutePath
+    Append a relative path to a base path
+
+    @param  BasePath [in] a system
+            path that will be considered as
+            base path
+
+    @param  RelPath [in] a system path
+            that will be considered as
+            relative path
+
+    @return the
+            resulting path which is a
+            concatenation of the base and
+            the relative path
+            if base path is empty the
+            resulting absolute path is the
+            relative path
+            if relative path is empty the
+            resulting absolute path is the
+            base path
+            if base and relative path are
+            empty the resulting absolute
+            path is also empty
+
+  *****************************************/
+
+ OString systemPathMakeAbsolutePath(
+     const OString& BasePath,
+    const OString& RelPath);
+
+ OUString systemPathMakeAbsolutePath(
+     const OUString& BasePath,
+    const OUString& RelPath);
+
+ /********************************************
+     systemPathIsHiddenFileOrDirectoryEntry
+    Returns sal_True if the last part of
+    given system path is not '.' or '..'
+    alone and starts with a '.'
+
+    @param pustrPath [in] a system path,
+           must not be NULL
+
+    @returns sal_True if the last part of
+             the given system path starts
+             with '.' or sal_False the last
+             part is '.' or '..' alone or
+             doesn't start with a dot
+
+ *********************************************/
+
+ inline bool systemPathIsHiddenFileOrDirectoryEntry(
+     const OString& Path)
+ {
+    return osl_systemPathIsHiddenFileOrDirectoryEntry(Path.pData);
+ }
+
+ /************************************************
+  searchPath
+  ***********************************************/
+
+ inline bool searchPath(
+     const OUString& ustrFilePath,
+    const OUString& ustrSearchPathList,
+    OUString& ustrPathFound)
+ {
+     return osl_searchPath(
+        ustrFilePath.pData,
+        ustrSearchPathList.pData,
+        &ustrPathFound.pData);
+ }
+
+ } // namespace osl
+
+ #endif /* #ifndef _OSL_PATH_HELPER_HXX_ */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_stat.cxx b/sal/osl/unx/file_stat.cxx
new file mode 100644
index 000000000..3b702905c
--- /dev/null
+++ b/sal/osl/unx/file_stat.cxx
@@ -0,0 +1,453 @@
+/* -*- 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 <osl/file.h>
+
+#include "system.hxx"
+#include <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include <osl/diagnose.h>
+#include <osl/thread.h>
+
+#include "file_impl.hxx"
+#include "file_error_transl.hxx"
+#include "file_path_helper.hxx"
+#include "file_url.hxx"
+#include "uunxapi.hxx"
+
+namespace
+{
+    void set_file_type(const struct stat& file_stat, oslFileStatus* pStat)
+    {
+        /* links to directories state also to be a directory */
+       if (S_ISLNK(file_stat.st_mode))
+           pStat->eType = osl_File_Type_Link;
+       else if (S_ISDIR(file_stat.st_mode))
+           pStat->eType = osl_File_Type_Directory;
+       else if (S_ISREG(file_stat.st_mode))
+           pStat->eType = osl_File_Type_Regular;
+       else if (S_ISFIFO(file_stat.st_mode))
+           pStat->eType = osl_File_Type_Fifo;
+       else if (S_ISSOCK(file_stat.st_mode))
+           pStat->eType = osl_File_Type_Socket;
+       else if (S_ISCHR(file_stat.st_mode) || S_ISBLK(file_stat.st_mode))
+           pStat->eType = osl_File_Type_Special;
+       else
+           pStat->eType = osl_File_Type_Unknown;
+
+       pStat->uValidFields |= osl_FileStatus_Mask_Type;
+    }
+
+    void set_file_access_mask(const struct stat& file_stat, oslFileStatus* pStat)
+    {
+        // user permissions
+        if (S_IRUSR & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_OwnRead;
+
+        if (S_IWUSR & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_OwnWrite;
+
+        if (S_IXUSR & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_OwnExe;
+
+        // group permissions
+        if (S_IRGRP & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_GrpRead;
+
+        if (S_IWGRP & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_GrpWrite;
+
+        if (S_IXGRP & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_GrpExe;
+
+        // others permissions
+        if (S_IROTH & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_OthRead;
+
+        if (S_IWOTH & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_OthWrite;
+
+        if (S_IXOTH & file_stat.st_mode)
+            pStat->uAttributes |= osl_File_Attribute_OthExe;
+
+        pStat->uValidFields |= osl_FileStatus_Mask_Attributes;
+    }
+
+    /* This code used not to use access(...) because access follows links which
+       may cause performance problems see #97133.  (That apparently references a
+       no-longer accessible Hamburg-internal bug-tracking system.)
+       However, contrary to what is stated above the use of access calls is
+       required on network file systems not using unix semantics (AFS, see
+       fdo#43095).
+    */
+    void set_file_access_rights(const OString& file_path, oslFileStatus* pStat)
+    {
+        pStat->uValidFields |= osl_FileStatus_Mask_Attributes;
+
+        if (osl::access(file_path, W_OK) < 0)
+            pStat->uAttributes |= osl_File_Attribute_ReadOnly;
+
+        if (osl::access(file_path, X_OK) == 0)
+            pStat->uAttributes |= osl_File_Attribute_Executable;
+    }
+
+    void set_file_hidden_status(const OString& file_path, oslFileStatus* pStat)
+    {
+        pStat->uAttributes   = osl::systemPathIsHiddenFileOrDirectoryEntry(file_path) ? osl_File_Attribute_Hidden : 0;
+        pStat->uValidFields |= osl_FileStatus_Mask_Attributes;
+    }
+
+    /* the set_file_access_rights must be called after set_file_hidden_status(...) and
+       set_file_access_mask(...) because of the hack in set_file_access_rights(...) */
+    void set_file_attributes(
+        const OString& file_path, const struct stat& file_stat, const sal_uInt32 uFieldMask, oslFileStatus* pStat)
+    {
+        set_file_hidden_status(file_path, pStat);
+        set_file_access_mask(file_stat, pStat);
+
+        // we set the file access rights only on demand
+        // because it's potentially expensive
+        if (uFieldMask & osl_FileStatus_Mask_Attributes)
+            set_file_access_rights(file_path, pStat);
+    }
+
+    void set_file_access_time(const struct stat& file_stat, oslFileStatus* pStat)
+    {
+        pStat->aAccessTime.Seconds  = file_stat.st_atime;
+        pStat->aAccessTime.Nanosec  = 0;
+        pStat->uValidFields        |= osl_FileStatus_Mask_AccessTime;
+    }
+
+    void set_file_modify_time(const struct stat& file_stat, oslFileStatus* pStat)
+    {
+        pStat->aModifyTime.Seconds  = file_stat.st_mtime;
+        pStat->aModifyTime.Nanosec  = 0;
+        pStat->uValidFields        |= osl_FileStatus_Mask_ModifyTime;
+    }
+
+    void set_file_size(const struct stat& file_stat, oslFileStatus* pStat)
+    {
+        if (S_ISREG(file_stat.st_mode))
+        {
+            pStat->uFileSize     = file_stat.st_size;
+            pStat->uValidFields |= osl_FileStatus_Mask_FileSize;
+        }
+    }
+
+    /* we only need to call stat or lstat if one of the
+       following flags is set */
+    bool is_stat_call_necessary(sal_uInt32 field_mask, oslFileType file_type)
+    {
+        return (
+                ((field_mask & osl_FileStatus_Mask_Type) && (file_type == osl_File_Type_Unknown)) ||
+                (field_mask & osl_FileStatus_Mask_Attributes) ||
+                (field_mask & osl_FileStatus_Mask_CreationTime) ||
+                (field_mask & osl_FileStatus_Mask_AccessTime) ||
+                (field_mask & osl_FileStatus_Mask_ModifyTime) ||
+                (field_mask & osl_FileStatus_Mask_FileSize) ||
+                (field_mask & osl_FileStatus_Mask_LinkTargetURL) ||
+                (field_mask & osl_FileStatus_Mask_Validate));
+    }
+
+    oslFileError set_link_target_url(const OString& file_path, oslFileStatus* pStat)
+    {
+        OString link_target;
+        if (!osl::realpath(file_path, link_target))
+            return oslTranslateFileError(errno);
+
+        OUString url;
+        oslFileError osl_error = osl::detail::convertPathnameToUrl(link_target, &url);
+        if (osl_error != osl_File_E_None)
+            return osl_error;
+        rtl_uString_assign(&pStat->ustrLinkTargetURL, url.pData);
+
+        pStat->uValidFields |= osl_FileStatus_Mask_LinkTargetURL;
+        return osl_File_E_None;
+    }
+
+    oslFileError setup_osl_getFileStatus(
+        DirectoryItem_Impl * pImpl, oslFileStatus* pStat, OString& file_path)
+    {
+        if ((pImpl == nullptr) || (pStat == nullptr))
+            return osl_File_E_INVAL;
+
+        file_path = pImpl->m_strFilePath;
+        OSL_ASSERT(!file_path.isEmpty());
+        if (file_path.isEmpty())
+            return osl_File_E_INVAL;
+
+        pStat->uValidFields = 0;
+        return osl_File_E_None;
+    }
+
+}
+
+oslFileError SAL_CALL osl_getFileStatus(oslDirectoryItem Item, oslFileStatus* pStat, sal_uInt32 uFieldMask)
+{
+    DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item);
+
+    OString file_path;
+    oslFileError  osl_error = setup_osl_getFileStatus(pImpl, pStat, file_path);
+    if (osl_error != osl_File_E_None)
+        return osl_error;
+
+    struct stat file_stat;
+
+    bool bStatNeeded = is_stat_call_necessary(uFieldMask, pImpl->getFileType());
+    if (bStatNeeded && (osl::lstat(file_path, file_stat) != 0))
+        return oslTranslateFileError(errno);
+
+    if (bStatNeeded)
+    {
+        // we set all these attributes because it's cheap
+        set_file_type(file_stat, pStat);
+        set_file_access_time(file_stat, pStat);
+        set_file_modify_time(file_stat, pStat);
+        set_file_size(file_stat, pStat);
+        set_file_attributes(file_path, file_stat, uFieldMask, pStat);
+
+        // file exists semantic of osl_FileStatus_Mask_Validate
+        if ((uFieldMask & osl_FileStatus_Mask_LinkTargetURL) && S_ISLNK(file_stat.st_mode))
+        {
+            osl_error = set_link_target_url(file_path, pStat);
+            if (osl_error != osl_File_E_None)
+                return osl_error;
+        }
+    }
+#ifdef _DIRENT_HAVE_D_TYPE
+    else if (uFieldMask & osl_FileStatus_Mask_Type)
+    {
+        pStat->eType = pImpl->getFileType();
+        pStat->uValidFields |= osl_FileStatus_Mask_Type;
+    }
+#endif /* _DIRENT_HAVE_D_TYPE */
+
+    if (uFieldMask & osl_FileStatus_Mask_FileURL)
+    {
+        OUString url;
+        if ((osl_error = osl::detail::convertPathnameToUrl(file_path, &url)) != osl_File_E_None)
+            return osl_error;
+        rtl_uString_assign(&pStat->ustrFileURL, url.pData);
+
+        pStat->uValidFields |= osl_FileStatus_Mask_FileURL;
+    }
+
+    if (uFieldMask & osl_FileStatus_Mask_FileName)
+    {
+        OString name;
+        osl_systemPathGetFileNameOrLastDirectoryPart(file_path.pData, &name.pData);
+        bool ok = rtl_convertStringToUString(
+            &pStat->ustrFileName, name.getStr(), name.getLength(), osl_getThreadTextEncoding(),
+            (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT
+             | RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT));
+        assert(ok); (void)ok;
+        pStat->uValidFields |= osl_FileStatus_Mask_FileName;
+    }
+    return osl_File_E_None;
+}
+
+static oslFileError osl_psz_setFileAttributes( const char* pszFilePath, sal_uInt64 uAttributes )
+{
+    oslFileError osl_error = osl_File_E_None;
+    mode_t       nNewMode  = 0;
+
+    OSL_ENSURE(!(osl_File_Attribute_Hidden & uAttributes), "osl_File_Attribute_Hidden doesn't work under Unix");
+
+    if (uAttributes & osl_File_Attribute_OwnRead)
+        nNewMode |= S_IRUSR;
+
+    if (uAttributes & osl_File_Attribute_OwnWrite)
+        nNewMode|=S_IWUSR;
+
+    if  (uAttributes & osl_File_Attribute_OwnExe)
+        nNewMode|=S_IXUSR;
+
+    if (uAttributes & osl_File_Attribute_GrpRead)
+        nNewMode|=S_IRGRP;
+
+    if (uAttributes & osl_File_Attribute_GrpWrite)
+        nNewMode|=S_IWGRP;
+
+    if (uAttributes & osl_File_Attribute_GrpExe)
+        nNewMode|=S_IXGRP;
+
+    if (uAttributes & osl_File_Attribute_OthRead)
+        nNewMode|=S_IROTH;
+
+    if (uAttributes & osl_File_Attribute_OthWrite)
+        nNewMode|=S_IWOTH;
+
+    if (uAttributes & osl_File_Attribute_OthExe)
+        nNewMode|=S_IXOTH;
+
+    if (chmod(pszFilePath, nNewMode) < 0)
+        osl_error = oslTranslateFileError(errno);
+
+    return osl_error;
+}
+
+oslFileError SAL_CALL osl_setFileAttributes( rtl_uString* ustrFileURL, sal_uInt64 uAttributes )
+{
+    char path[PATH_MAX];
+    oslFileError eRet;
+
+    OSL_ASSERT( ustrFileURL );
+
+    /* convert file url to system path */
+    eRet = FileURLToPath( path, PATH_MAX, ustrFileURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return osl_psz_setFileAttributes( path, uAttributes );
+}
+
+static oslFileError osl_psz_setFileTime (
+    const char* pszFilePath,
+    const TimeValue* pLastAccessTime,
+    const TimeValue* pLastWriteTime )
+{
+    int nRet=0;
+    struct utimbuf aTimeBuffer;
+    struct stat aFileStat;
+#ifdef DEBUG_OSL_FILE
+    struct tm* pTM=0;
+#endif
+
+    nRet = lstat_c(pszFilePath,&aFileStat);
+
+    if ( nRet < 0 )
+    {
+        nRet=errno;
+        return oslTranslateFileError(nRet);
+    }
+
+#ifdef DEBUG_OSL_FILE
+    fprintf(stderr,"File Times are (in localtime):\n");
+    pTM=localtime(&aFileStat.st_ctime);
+    fprintf(stderr,"CreationTime is '%s'\n",asctime(pTM));
+    pTM=localtime(&aFileStat.st_atime);
+    fprintf(stderr,"AccessTime   is '%s'\n",asctime(pTM));
+    pTM=localtime(&aFileStat.st_mtime);
+    fprintf(stderr,"Modification is '%s'\n",asctime(pTM));
+
+    fprintf(stderr,"File Times are (in UTC):\n");
+    fprintf(stderr,"CreationTime is '%s'\n",ctime(&aFileStat.st_ctime));
+    fprintf(stderr,"AccessTime   is '%s'\n",ctime(&aTimeBuffer.actime));
+    fprintf(stderr,"Modification is '%s'\n",ctime(&aTimeBuffer.modtime));
+#endif
+
+    if ( pLastAccessTime != nullptr )
+    {
+        aTimeBuffer.actime=pLastAccessTime->Seconds;
+    }
+    else
+    {
+        aTimeBuffer.actime=aFileStat.st_atime;
+    }
+
+    if ( pLastWriteTime != nullptr )
+    {
+        aTimeBuffer.modtime=pLastWriteTime->Seconds;
+    }
+    else
+    {
+        aTimeBuffer.modtime=aFileStat.st_mtime;
+    }
+
+    /* mfe: Creation time not used here! */
+
+#ifdef DEBUG_OSL_FILE
+    fprintf(stderr,"File Times are (in localtime):\n");
+    pTM=localtime(&aFileStat.st_ctime);
+    fprintf(stderr,"CreationTime now '%s'\n",asctime(pTM));
+    pTM=localtime(&aTimeBuffer.actime);
+    fprintf(stderr,"AccessTime   now '%s'\n",asctime(pTM));
+    pTM=localtime(&aTimeBuffer.modtime);
+    fprintf(stderr,"Modification now '%s'\n",asctime(pTM));
+
+    fprintf(stderr,"File Times are (in UTC):\n");
+    fprintf(stderr,"CreationTime now '%s'\n",ctime(&aFileStat.st_ctime));
+    fprintf(stderr,"AccessTime   now '%s'\n",ctime(&aTimeBuffer.actime));
+    fprintf(stderr,"Modification now '%s'\n",ctime(&aTimeBuffer.modtime));
+#endif
+
+    nRet = utime_c(pszFilePath,&aTimeBuffer);
+    if ( nRet < 0 )
+    {
+        nRet=errno;
+        return oslTranslateFileError(nRet);
+    }
+
+    return osl_File_E_None;
+}
+
+oslFileError SAL_CALL osl_setFileTime (
+    rtl_uString* ustrFileURL,
+    SAL_UNUSED_PARAMETER const TimeValue* /* pCreationTime */,
+    const TimeValue* pLastAccessTime,
+    const TimeValue* pLastWriteTime )
+{
+    char path[PATH_MAX];
+    oslFileError eRet;
+
+    OSL_ASSERT( ustrFileURL );
+
+    /* convert file url to system path */
+    eRet = FileURLToPath( path, PATH_MAX, ustrFileURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return osl_psz_setFileTime( path, pLastAccessTime, pLastWriteTime );
+}
+
+sal_Bool
+SAL_CALL osl_identicalDirectoryItem( oslDirectoryItem a, oslDirectoryItem b)
+{
+    DirectoryItem_Impl *pA = static_cast<DirectoryItem_Impl *>(a);
+    DirectoryItem_Impl *pB = static_cast<DirectoryItem_Impl *>(b);
+    if (a == b)
+        return true;
+    /* same name => same item, unless renaming / moving madness has occurred */
+    if (pA->m_strFilePath == pB->m_strFilePath)
+        return true;
+
+    struct stat a_stat, b_stat;
+
+    if (osl::lstat(pA->m_strFilePath, a_stat) != 0 ||
+        osl::lstat(pB->m_strFilePath, b_stat) != 0)
+        return false;
+
+    return (a_stat.st_ino == b_stat.st_ino);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_url.cxx b/sal/osl/unx/file_url.cxx
new file mode 100644
index 000000000..4b5a16885
--- /dev/null
+++ b/sal/osl/unx/file_url.cxx
@@ -0,0 +1,972 @@
+/* -*- 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 "file_url.hxx"
+
+#include "system.hxx"
+
+#include <algorithm>
+#include <cassert>
+#include <cstring>
+#include <stdexcept>
+#include <string_view>
+#include <type_traits>
+#include <limits.h>
+#include <errno.h>
+#include <strings.h>
+#include <unistd.h>
+
+#include <o3tl/safeint.hxx>
+#include <osl/file.hxx>
+#include <osl/security.hxx>
+#include <osl/socket.h>
+#include <oslsocket.hxx>
+#include <osl/diagnose.h>
+#include <osl/thread.h>
+#include <osl/process.h>
+
+#include <rtl/character.hxx>
+#include <rtl/strbuf.hxx>
+#include <rtl/uri.h>
+#include <rtl/uri.hxx>
+#include <rtl/ustring.hxx>
+#include <rtl/ustrbuf.h>
+#include <rtl/ustrbuf.hxx>
+#include <rtl/textcvt.h>
+#include <sal/log.hxx>
+
+#include <uri_internal.hxx>
+
+#include "file_error_transl.hxx"
+#include "file_path_helper.hxx"
+
+#include "uunxapi.hxx"
+
+/** @file
+
+ General note
+
+ This file contains the part that handles File URLs.
+
+ File URLs as scheme specific notion of URIs
+ (RFC2396) may be handled platform independent, but
+ will not in osl which is considered wrong.
+ Future version of osl should handle File URLs this
+ way. In rtl/uri there is already a URI parser etc.
+ so this code should be consolidated.
+
+*/
+
+using namespace osl;
+
+namespace {
+
+// A slightly modified version of Pchar in rtl/source/uri.c, but without
+// encoding slashes:
+constexpr auto uriCharClass = rtl::createUriCharClass(
+    u8"!$&'()*+,-./0123456789:=@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~");
+
+}
+
+oslFileError SAL_CALL osl_getCanonicalName( rtl_uString* ustrFileURL, rtl_uString** pustrValidURL )
+{
+    OSL_FAIL("osl_getCanonicalName not implemented");
+
+    rtl_uString_newFromString(pustrValidURL, ustrFileURL);
+    return osl_File_E_None;
+}
+
+namespace {
+
+    class UnicodeToTextConverter_Impl
+    {
+        rtl_UnicodeToTextConverter m_converter;
+
+        UnicodeToTextConverter_Impl()
+            : m_converter (rtl_createUnicodeToTextConverter (osl_getThreadTextEncoding()))
+        {}
+
+        ~UnicodeToTextConverter_Impl()
+        {
+            rtl_destroyUnicodeToTextConverter (m_converter);
+        }
+    public:
+        static UnicodeToTextConverter_Impl & getInstance()
+        {
+            static UnicodeToTextConverter_Impl g_theConverter;
+            return g_theConverter;
+        }
+
+        sal_Size convert(
+            sal_Unicode const * pSrcBuf, sal_Size nSrcChars, char * pDstBuf, sal_Size nDstBytes,
+            sal_uInt32 nFlags, sal_uInt32 * pInfo, sal_Size * pSrcCvtChars)
+        {
+            OSL_ASSERT(m_converter != nullptr);
+            return rtl_convertUnicodeToText (
+                m_converter, nullptr, pSrcBuf, nSrcChars, pDstBuf, nDstBytes, nFlags, pInfo, pSrcCvtChars);
+        }
+    };
+
+bool convert(OUStringBuffer const & in, OStringBuffer * append) {
+    assert(append != nullptr);
+    for (sal_Size nConvert = in.getLength();;) {
+        auto const oldLen = append->getLength();
+        auto n = std::min(
+            std::max(nConvert, sal_Size(PATH_MAX)),
+            sal_Size(std::numeric_limits<sal_Int32>::max() - oldLen));
+            // approximation of required converted size
+        auto s = append->appendUninitialized(n);
+        sal_uInt32 info;
+        sal_Size converted;
+        //TODO: context, for reliable treatment of DESTBUFFERTOSMALL:
+        n = UnicodeToTextConverter_Impl::getInstance().convert(
+            in.getStr() + in.getLength() - nConvert, nConvert, s, n,
+            (RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR
+             | RTL_UNICODETOTEXT_FLAGS_FLUSH),
+            &info, &converted);
+        if ((info & RTL_UNICODETOTEXT_INFO_ERROR) != 0) {
+            return false;
+        }
+        append->setLength(oldLen + n);
+        assert(converted <= nConvert);
+        nConvert -= converted;
+        assert((nConvert == 0) == ((info & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL) == 0));
+        if ((info & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL) == 0) {
+            break;
+        }
+    }
+    return true;
+}
+
+bool decodeFromUtf8(std::u16string_view text, OString * result) {
+    assert(result != nullptr);
+    auto p = text.data();
+    auto const end = p + text.size();
+    OUStringBuffer ubuf(static_cast<int>(text.size()));
+    OStringBuffer bbuf(PATH_MAX);
+    while (p < end) {
+        rtl::uri::detail::EscapeType t;
+        sal_uInt32 c = rtl::uri::detail::readUcs4(&p, end, true, RTL_TEXTENCODING_UTF8, &t);
+        switch (t) {
+        case rtl::uri::detail::EscapeNo:
+            if (c == '%') {
+                return false;
+            }
+            [[fallthrough]];
+        case rtl::uri::detail::EscapeChar:
+            if (rtl::isSurrogate(c)) {
+                return false;
+            }
+            ubuf.appendUtf32(c);
+            break;
+        case rtl::uri::detail::EscapeOctet:
+            if (!convert(ubuf, &bbuf)) {
+                return false;
+            }
+            ubuf.setLength(0);
+            assert(c <= 0xFF);
+            bbuf.append(char(c));
+            break;
+        }
+    }
+    if (!convert(ubuf, &bbuf)) {
+        return false;
+    }
+    *result = bbuf.makeStringAndClear();
+    return true;
+}
+
+template<typename T> oslFileError getSystemPathFromFileUrl(
+    OUString const & url, T * path, bool resolveHome)
+{
+    assert(path != nullptr);
+    // For compatibility with assumptions in other parts of the code base,
+    // assume that anything starting with a slash is a system path instead of a
+    // (relative) file URL (except if it starts with two slashes, in which case
+    // it is a relative URL with an authority component):
+    if (url.isEmpty()
+        || (url[0] == '/' && (url.getLength() == 1 || url[1] != '/')))
+    {
+        return osl_File_E_INVAL;
+    }
+    // Check for non file scheme:
+    sal_Int32 i = 0;
+    if (rtl::isAsciiAlpha(url[0])) {
+        for (sal_Int32 j = 1; j != url.getLength(); ++j) {
+            auto c = url[j];
+            if (c == ':') {
+                if (rtl_ustr_ascii_compareIgnoreAsciiCase_WithLengths(
+                        url.pData->buffer, j,
+                        RTL_CONSTASCII_STRINGPARAM("file"))
+                    != 0)
+                {
+                    return osl_File_E_INVAL;
+                }
+                i = j + 1;
+                break;
+            }
+            if (!rtl::isAsciiAlphanumeric(c) && c != '+' && c != '-'
+                       && c != '.')
+            {
+                break;
+            }
+        }
+    }
+    // Handle query or fragment:
+    if (url.indexOf('?', i) != -1 || url.indexOf('#', i) != -1)
+        return osl_File_E_INVAL;
+    // Handle authority, supporting a host of "localhost", "127.0.0.1", or the exact value (e.g.,
+    // not supporting an additional final dot, for simplicity) reported by osl_getLocalHostnameFQDN
+    // (and, in each case, ignoring case of ASCII letters):
+    if (url.getLength() - i >= 2 && url[i] == '/' && url[i + 1] == '/')
+    {
+        i += 2;
+        sal_Int32 j = url.indexOf('/', i);
+        if (j == -1)
+            j = url.getLength();
+        if (j != i
+            && (rtl_ustr_ascii_compareIgnoreAsciiCase_WithLengths(
+                    url.pData->buffer + i, j - i,
+                    RTL_CONSTASCII_STRINGPARAM("localhost"))
+                != 0)
+            && (rtl_ustr_ascii_compareIgnoreAsciiCase_WithLengths(
+                    url.pData->buffer + i, j - i,
+                    RTL_CONSTASCII_STRINGPARAM("127.0.0.1"))
+                != 0))
+        {
+            OUString hostname;
+            // The 'file' URI Scheme does imply that we want a FQDN in this case
+            // See https://tools.ietf.org/html/rfc8089#section-3
+            if (osl_getLocalHostnameFQDN(&hostname.pData) != osl_Socket_Ok
+                || (rtl_ustr_compareIgnoreAsciiCase_WithLength(
+                        url.pData->buffer + i, j - i, hostname.getStr(), hostname.getLength())
+                    != 0))
+            {
+                return osl_File_E_INVAL;
+            }
+        }
+        i = j;
+    }
+    // Handle empty path:
+    if (i == url.getLength())
+    {
+        *path = "/";
+        return osl_File_E_None;
+    }
+    // Path must not contain %2F:
+    if (url.indexOf("%2F", i) != -1 || url.indexOf("%2f", i) != -1)
+        return osl_File_E_INVAL;
+
+    if constexpr (std::is_same_v<T, rtl::OString>) {
+        if (!decodeFromUtf8(url.subView(i), path)) {
+            return osl_File_E_INVAL;
+        }
+    } else if constexpr (std::is_same_v<T, rtl::OUString>) {
+        *path = rtl::Uri::decode(
+            url.copy(i), rtl_UriDecodeWithCharset, RTL_TEXTENCODING_UTF8);
+    } else {
+        static_assert(std::is_same_v<T, rtl::OString> || std::is_same_v<T, rtl::OUString>);
+    }
+    // Path must not contain %2F:
+    if (path->indexOf('\0') != -1)
+        return osl_File_E_INVAL;
+
+    // Handle ~ notation:
+    if (resolveHome && path->getLength() >= 2 && (*path)[1] == '~')
+    {
+        sal_Int32 j = path->indexOf('/', 2);
+        if (j == -1)
+            j = path->getLength();
+
+        if (j == 2)
+        {
+            OUString home;
+            if (!osl::Security().getHomeDir(home))
+            {
+                SAL_WARN("sal.file", "osl::Security::getHomeDir failed");
+                return osl_File_E_INVAL;
+            }
+
+            i = url.indexOf('/', i + 1);
+
+            if (i == -1)
+                i = url.getLength();
+            else
+                ++i;
+
+            //TODO: cheesy way of ensuring home's path ends in slash:
+            if (!home.isEmpty() && home[home.getLength() - 1] != '/')
+                home += "/";
+            try
+            {
+                home = rtl::Uri::convertRelToAbs(home, url.copy(i));
+            }
+            catch (rtl::MalformedUriException & e)
+            {
+                SAL_WARN("sal.file", "rtl::MalformedUriException " << e.getMessage());
+                return osl_File_E_INVAL;
+            }
+            return getSystemPathFromFileUrl(home, path, false);
+        }
+        // FIXME: replace ~user with user's home directory
+        return osl_File_E_INVAL;
+    }
+    return osl_File_E_None;
+}
+
+}
+
+oslFileError SAL_CALL osl_getSystemPathFromFileURL( rtl_uString *ustrFileURL, rtl_uString **pustrSystemPath )
+{
+    OUString path;
+    oslFileError e;
+    try
+    {
+        e = getSystemPathFromFileUrl(
+            OUString::unacquired(&ustrFileURL), &path, true);
+    }
+    catch (std::length_error &)
+    {
+        e = osl_File_E_RANGE;
+    }
+
+    if (e == osl_File_E_None)
+        rtl_uString_assign(pustrSystemPath, path.pData);
+
+    return e;
+}
+
+oslFileError SAL_CALL osl_getFileURLFromSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrFileURL )
+{
+    rtl_uString *pTmp = nullptr;
+    sal_Int32 nIndex;
+
+    auto const & systemPath = OUString::unacquired(&ustrSystemPath);
+
+    if( systemPath.isEmpty() )
+        return osl_File_E_INVAL;
+
+    if( systemPath.startsWith( "file:" ) )
+        return osl_File_E_INVAL;
+
+    /* check if system path starts with ~ or ~user and replace it with the appropriate home dir */
+    if( systemPath.startsWith("~") )
+    {
+        /* check if another user is specified */
+        if( ( systemPath.getLength() == 1 ) ||
+            ( systemPath[1] == '/' ) )
+        {
+            /* osl_getHomeDir returns file URL */
+            oslSecurity pSecurity = osl_getCurrentSecurity();
+            osl_getHomeDir( pSecurity , &pTmp );
+            osl_freeSecurityHandle( pSecurity );
+
+            if (!pTmp)
+                return osl_File_E_INVAL;
+
+            /* remove "file://" prefix */
+            rtl_uString_newFromStr_WithLength( &pTmp, pTmp->buffer + 7, pTmp->length - 7 );
+
+            /* replace '~' in original string */
+            rtl_uString_newReplaceStrAt( &pTmp, systemPath.pData, 0, 1, pTmp );
+        }
+        else
+        {
+            /* FIXME: replace ~user with users home directory */
+            return osl_File_E_INVAL;
+        }
+    }
+
+    /* check if initial string contains repeated '/' characters */
+    nIndex = systemPath.indexOf( "//" );
+    if( nIndex != -1 )
+    {
+        sal_Int32 nSrcIndex;
+        sal_Int32 nDeleted = 0;
+
+        /* if pTmp is not already allocated, copy systemPath for modification */
+        if( pTmp == nullptr )
+            rtl_uString_newFromString( &pTmp, systemPath.pData );
+
+        /* adapt index to pTmp */
+        nIndex += pTmp->length - systemPath.getLength();
+
+        /* replace repeated '/' characters with a single '/' */
+        for( nSrcIndex = nIndex + 1; nSrcIndex < pTmp->length; nSrcIndex++ )
+        {
+            if( (pTmp->buffer[nSrcIndex] == '/') && (pTmp->buffer[nIndex] == '/') )
+                nDeleted++;
+            else
+                pTmp->buffer[++nIndex] = pTmp->buffer[nSrcIndex];
+        }
+
+        /* adjust length member */
+        pTmp->length -= nDeleted;
+    }
+
+    if( pTmp == nullptr )
+        rtl_uString_assign( &pTmp, systemPath.pData );
+
+    /* file URLs must be URI encoded */
+    rtl_uriEncode( pTmp, uriCharClass.data(), rtl_UriEncodeIgnoreEscapes, RTL_TEXTENCODING_UTF8, pustrFileURL );
+
+    rtl_uString_release( pTmp );
+
+    /* absolute urls should start with 'file://' */
+    if( (*pustrFileURL)->buffer[0] == '/' )
+    {
+        rtl_uString *pProtocol = nullptr;
+
+        rtl_uString_newFromAscii( &pProtocol, "file://" );
+        rtl_uString_newConcat( pustrFileURL, pProtocol, *pustrFileURL );
+        rtl_uString_release( pProtocol );
+    }
+
+    return osl_File_E_None;
+}
+
+/*
+ * relative URLs are not accepted
+ */
+oslFileError getSystemPathFromFileURL_Ex(
+    rtl_uString *ustrFileURL, rtl_uString **pustrSystemPath)
+{
+    rtl_uString* temp = nullptr;
+    oslFileError osl_error = osl_getSystemPathFromFileURL(ustrFileURL, &temp);
+
+    if (osl_error == osl_File_E_None)
+    {
+        if (temp->buffer[0] == '/')
+        {
+            *pustrSystemPath = temp;
+        }
+        else
+        {
+            rtl_uString_release(temp);
+            osl_error = osl_File_E_INVAL;
+        }
+    }
+
+    return osl_error;
+}
+
+namespace
+{
+
+    /** Helper function, return a pointer to the final '\0'
+        of a string
+    */
+
+    sal_Unicode* ustrtoend(sal_Unicode* pStr)
+    {
+        return (pStr + rtl_ustr_getLength(pStr));
+    }
+
+    sal_Unicode* ustrchrcat(const sal_Unicode chr, sal_Unicode* d)
+    {
+        sal_Unicode* p = ustrtoend(d);
+        *p++ = chr;
+        *p   = 0;
+        return d;
+    }
+
+    bool _islastchr(sal_Unicode* pStr, sal_Unicode Chr)
+    {
+           sal_Unicode* p = ustrtoend(pStr);
+           if (p > pStr)
+               p--;
+           return (*p == Chr);
+    }
+
+    /**
+     Remove the last part of a path, a path that has
+     only a '/' or no '/' at all will be returned
+     unmodified
+    */
+
+    sal_Unicode* _rmlastpathtoken(sal_Unicode* aPath)
+    {
+        /* we may always skip -2 because we
+           may at least stand on a '/' but
+           either there is no other character
+           before this '/' or it's another
+           character than the '/'
+        */
+        sal_Unicode* p = ustrtoend(aPath) - 2;
+
+        /* move back to the next path separator
+           or to the start of the string */
+        while ((p > aPath) && (*p != '/'))
+            p--;
+
+        if (p >= aPath)
+        {
+            if (*p == '/')
+            {
+                p++;
+                *p = '\0';
+            }
+            else
+            {
+                *p = '\0';
+            }
+        }
+
+        return aPath;
+    }
+
+    oslFileError _osl_resolvepath(
+        /*inout*/ sal_Unicode* path,
+        /*inout*/ bool* failed)
+    {
+        oslFileError ferr = osl_File_E_None;
+
+        if (!*failed)
+        {
+            char unresolved_path[PATH_MAX];
+            if (!UnicodeToText(unresolved_path, sizeof(unresolved_path), path, rtl_ustr_getLength(path)))
+                return oslTranslateFileError(ENAMETOOLONG);
+
+            char resolved_path[PATH_MAX];
+            if (realpath(unresolved_path, resolved_path))
+            {
+                if (!TextToUnicode(resolved_path, strlen(resolved_path), path, PATH_MAX))
+                    return oslTranslateFileError(ENAMETOOLONG);
+            }
+            else
+            {
+                if (EACCES == errno || ENOTDIR == errno || ENOENT == errno)
+                    *failed = true;
+                else
+                    ferr = oslTranslateFileError(errno);
+            }
+        }
+
+        return ferr;
+    }
+
+    /**
+       Works even with non existing paths. The resulting path must not exceed
+       PATH_MAX else osl_File_E_NAMETOOLONG is the result
+    */
+
+    oslFileError osl_getAbsoluteFileURL_impl_(const OUString& unresolved_path, OUString& resolved_path)
+    {
+        /* the given unresolved path must not exceed PATH_MAX */
+        if (unresolved_path.getLength() >= (PATH_MAX - 2))
+            return oslTranslateFileError(ENAMETOOLONG);
+
+        sal_Unicode        path_resolved_so_far[PATH_MAX];
+        const sal_Unicode* punresolved = unresolved_path.getStr();
+        sal_Unicode*       presolvedsf = path_resolved_so_far;
+
+        /* reserve space for leading '/' and trailing '\0'
+           do not exceed this limit */
+        sal_Unicode* sentinel = path_resolved_so_far + PATH_MAX - 2;
+
+        /* if realpath fails with error ENOTDIR, EACCES or ENOENT
+           we will not call it again, because _osl_realpath should also
+           work with non existing directories etc. */
+        bool realpath_failed = false;
+        oslFileError ferr;
+
+        path_resolved_so_far[0] = '\0';
+
+        while (*punresolved != '\0')
+        {
+            /* ignore '/.' , skip one part back when '/..' */
+            if ((*punresolved == '.') && (*presolvedsf == '/'))
+            {
+                if (*(punresolved + 1) == '\0')
+                {
+                    punresolved++;
+                    continue;
+                }
+                if (*(punresolved + 1) == '/')
+                {
+                    punresolved += 2;
+                    continue;
+                }
+                if ((*(punresolved + 1) == '.') && (*(punresolved + 2) == '\0' || (*(punresolved + 2) == '/')))
+                {
+                    _rmlastpathtoken(path_resolved_so_far);
+
+                    presolvedsf = ustrtoend(path_resolved_so_far) - 1;
+
+                    if (*(punresolved + 2) == '/')
+                        punresolved += 3;
+                    else
+                        punresolved += 2;
+
+                    continue;
+                }
+
+                /* a file or directory name may start with '.' */
+                if ((presolvedsf = ustrtoend(path_resolved_so_far)) > sentinel)
+                    return oslTranslateFileError(ENAMETOOLONG);
+
+                ustrchrcat(*punresolved++, path_resolved_so_far);
+
+                if (*punresolved == '\0' && !realpath_failed)
+                {
+                    ferr = _osl_resolvepath(
+                        path_resolved_so_far,
+                        &realpath_failed);
+
+                    if (ferr != osl_File_E_None)
+                        return ferr;
+                }
+            }
+            else if (*punresolved == '/')
+            {
+                if ((presolvedsf = ustrtoend(path_resolved_so_far)) > sentinel)
+                    return oslTranslateFileError(ENAMETOOLONG);
+
+                ustrchrcat(*punresolved++, path_resolved_so_far);
+
+                if (!realpath_failed)
+                {
+                    ferr = _osl_resolvepath(
+                        path_resolved_so_far,
+                        &realpath_failed);
+
+                    if (ferr != osl_File_E_None)
+                        return ferr;
+
+                    if (!_islastchr(path_resolved_so_far, '/'))
+                    {
+                        if ((presolvedsf = ustrtoend(path_resolved_so_far)) > sentinel)
+                            return oslTranslateFileError(ENAMETOOLONG);
+
+                        ustrchrcat('/', path_resolved_so_far);
+                    }
+                }
+            }
+            else // any other character
+            {
+                if ((presolvedsf = ustrtoend(path_resolved_so_far)) > sentinel)
+                    return oslTranslateFileError(ENAMETOOLONG);
+
+                ustrchrcat(*punresolved++, path_resolved_so_far);
+
+                if (*punresolved == '\0' && !realpath_failed)
+                {
+                    ferr = _osl_resolvepath(
+                        path_resolved_so_far,
+                        &realpath_failed);
+
+                    if (ferr != osl_File_E_None)
+                        return ferr;
+                }
+            }
+        }
+
+        sal_Int32 len = rtl_ustr_getLength(path_resolved_so_far);
+
+        OSL_ASSERT(len < PATH_MAX);
+
+        resolved_path = OUString(path_resolved_so_far, len);
+
+        return osl_File_E_None;
+    }
+
+}
+
+oslFileError osl_getAbsoluteFileURL(
+        rtl_uString* ustrBaseDirURL,
+        rtl_uString* ustrRelativeURL,
+        rtl_uString** pustrAbsoluteURL)
+{
+    /* Work around the below call to getSystemPathFromFileURL rejecting input
+       that starts with "/" (for whatever reason it behaves that way; but
+       changing that would start to break lots of tests at least) */
+    OUString relUrl(ustrRelativeURL);
+    if (relUrl.startsWith("//"))
+        relUrl = "file:" + relUrl;
+    else if (relUrl.startsWith("/"))
+        relUrl = "file://" + relUrl;
+
+    OUString unresolved_path;
+
+    FileBase::RC frc = FileBase::getSystemPathFromFileURL(relUrl, unresolved_path);
+    if (frc != FileBase::E_None)
+        return oslFileError(frc);
+
+    if (systemPathIsRelativePath(unresolved_path))
+    {
+        OUString base_path;
+        oslFileError rc = getSystemPathFromFileURL_Ex(ustrBaseDirURL, &base_path.pData);
+        if (rc != osl_File_E_None)
+            return rc;
+
+        unresolved_path = systemPathMakeAbsolutePath(base_path, unresolved_path);
+    }
+
+    OUString resolved_path;
+    oslFileError rc = osl_getAbsoluteFileURL_impl_(unresolved_path, resolved_path);
+    if (rc == osl_File_E_None)
+    {
+        rc = osl_getFileURLFromSystemPath(resolved_path.pData, pustrAbsoluteURL);
+        OSL_ASSERT(osl_File_E_None == rc);
+    }
+
+    return rc;
+}
+
+namespace osl::detail {
+
+    /**
+     No separate error code if unicode to text conversion or getenv fails because for the
+     caller there is no difference why a file could not be found in $PATH
+    */
+    bool find_in_PATH(const OUString& file_path, OUString& result)
+    {
+        bool bfound = false;
+        OUString path("PATH");
+        OUString env_path;
+
+        if (osl_getEnvironment(path.pData, &env_path.pData) == osl_Process_E_None)
+            bfound = osl::searchPath(file_path, env_path, result);
+
+        return bfound;
+    }
+}
+
+namespace
+{
+    /**
+     No separate error code if unicode to text conversion or getcwd fails because for the
+     caller there is no difference why a file could not be found in CDW
+    */
+    bool find_in_CWD(const OUString& file_path, OUString& result)
+    {
+        bool bfound = false;
+        OUString cwd_url;
+
+        if (osl_getProcessWorkingDir(&cwd_url.pData) == osl_Process_E_None)
+        {
+            OUString cwd;
+            FileBase::getSystemPathFromFileURL(cwd_url, cwd);
+            bfound = osl::searchPath(file_path, cwd, result);
+        }
+        return bfound;
+    }
+
+    bool find_in_searchPath(const OUString& file_path, rtl_uString* search_path, OUString& result)
+    {
+        return (search_path && osl::searchPath(file_path, OUString(search_path), result));
+    }
+
+}
+
+oslFileError osl_searchFileURL(rtl_uString* ustrFilePath, rtl_uString* ustrSearchPath, rtl_uString** pustrURL)
+{
+    OSL_PRECOND(ustrFilePath && pustrURL, "osl_searchFileURL: invalid parameter");
+
+    FileBase::RC  rc;
+    OUString file_path;
+
+    // try to interpret search path as file url else assume it's a system path list
+    rc = FileBase::getSystemPathFromFileURL(ustrFilePath, file_path);
+    if (rc == FileBase::E_INVAL)
+        file_path = ustrFilePath;
+    else if (rc != FileBase::E_None)
+        return oslFileError(rc);
+
+    bool          bfound = false;
+    OUString result;
+
+    if (find_in_searchPath(file_path, ustrSearchPath, result) ||
+        osl::detail::find_in_PATH(file_path, result) ||
+        find_in_CWD(file_path, result))
+    {
+        OUString resolved;
+
+        if (osl::realpath(result, resolved))
+        {
+            oslFileError osl_error = osl_getFileURLFromSystemPath(resolved.pData, pustrURL);
+            SAL_WARN_IF(osl_File_E_None != osl_error, "sal.file", "osl_getFileURLFromSystemPath failed");
+            bfound = true;
+        }
+    }
+    return bfound ? osl_File_E_None : osl_File_E_NOENT;
+}
+
+oslFileError FileURLToPath(char * buffer, size_t bufLen, rtl_uString* ustrFileURL)
+{
+    OString strSystemPath;
+    oslFileError osl_error      = osl::detail::convertUrlToPathname(
+        OUString::unacquired(&ustrFileURL), &strSystemPath);
+
+    if(osl_error != osl_File_E_None)
+        return osl_error;
+
+    osl_systemPathRemoveSeparator(strSystemPath.pData);
+
+    if (o3tl::make_unsigned(strSystemPath.getLength()) >= bufLen) {
+        return osl_File_E_OVERFLOW;
+    }
+    std::strcpy(buffer, strSystemPath.getStr());
+
+    return osl_error;
+}
+
+int UnicodeToText( char * buffer, size_t bufLen, const sal_Unicode * uniText, sal_Int32 uniTextLen )
+{
+    sal_uInt32   nInfo = 0;
+    sal_Size     nSrcChars = 0;
+
+    sal_Size nDestBytes = UnicodeToTextConverter_Impl::getInstance().convert (
+        uniText, uniTextLen, buffer, bufLen,
+        OUSTRING_TO_OSTRING_CVTFLAGS | RTL_UNICODETOTEXT_FLAGS_FLUSH, &nInfo, &nSrcChars);
+
+    if( nInfo & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL )
+    {
+        errno = EOVERFLOW;
+        return 0;
+    }
+
+    /* ensure trailing '\0' */
+    buffer[nDestBytes] = '\0';
+    return nDestBytes;
+}
+
+namespace
+{
+    class TextToUnicodeConverter_Impl
+    {
+        rtl_TextToUnicodeConverter m_converter;
+
+        TextToUnicodeConverter_Impl()
+            : m_converter (rtl_createTextToUnicodeConverter (osl_getThreadTextEncoding()))
+        {}
+
+        ~TextToUnicodeConverter_Impl()
+        {
+            rtl_destroyTextToUnicodeConverter (m_converter);
+        }
+
+    public:
+        static TextToUnicodeConverter_Impl & getInstance()
+        {
+            static TextToUnicodeConverter_Impl g_theConverter;
+            return g_theConverter;
+        }
+
+        sal_Size convert(
+            char const * pSrcBuf, sal_Size nSrcBytes, sal_Unicode * pDstBuf, sal_Size nDstChars,
+            sal_uInt32 nFlags, sal_uInt32 * pInfo, sal_Size * pSrcCvtBytes)
+        {
+            OSL_ASSERT(m_converter != nullptr);
+            return rtl_convertTextToUnicode (
+                m_converter, nullptr, pSrcBuf, nSrcBytes, pDstBuf, nDstChars, nFlags, pInfo, pSrcCvtBytes);
+        }
+    };
+}
+
+int TextToUnicode(
+    const char*  text,
+    size_t text_buffer_size,
+    sal_Unicode* unic_text,
+    sal_Int32 unic_text_buffer_size)
+{
+    sal_uInt32 nInfo = 0;
+    sal_Size nSrcChars = 0;
+
+    sal_Size nDestBytes = TextToUnicodeConverter_Impl::getInstance().convert(
+        text, text_buffer_size, unic_text, unic_text_buffer_size,
+        OSTRING_TO_OUSTRING_CVTFLAGS | RTL_TEXTTOUNICODE_FLAGS_FLUSH, &nInfo, &nSrcChars);
+
+    if (nInfo & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL)
+    {
+        errno = EOVERFLOW;
+        return 0;
+    }
+
+    /* ensure trailing '\0' */
+    unic_text[nDestBytes] = '\0';
+    return nDestBytes;
+}
+
+oslFileError osl::detail::convertUrlToPathname(OUString const & url, OString * pathname) {
+    assert(pathname != nullptr);
+    oslFileError e;
+    try {
+        e = getSystemPathFromFileUrl(url, pathname, true);
+    } catch (std::length_error &) {
+        e = osl_File_E_RANGE;
+    }
+    if (e == osl_File_E_None && !pathname->startsWith("/")) {
+        e = osl_File_E_INVAL;
+    }
+    return e;
+}
+
+oslFileError osl::detail::convertPathnameToUrl(OString const & pathname, OUString * url) {
+    assert(url != nullptr);
+    OUStringBuffer buf(10+pathname.getLength());
+    buf.append("file:");
+    if (pathname.startsWith("/")) {
+        buf.append("//");
+            // so if pathname should ever start with "//" that isn't mistaken for an authority
+            // component
+    }
+    for (sal_Size convert = pathname.getLength();;) {
+        auto n = std::max(convert, sal_Size(PATH_MAX)); // approximation of required converted size
+        OUStringBuffer ubuf(static_cast<int>(n));
+        auto s = ubuf.appendUninitialized(n);
+        sal_uInt32 info;
+        sal_Size converted;
+        //TODO: context, for reliable treatment of DESTBUFFERTOSMALL:
+        n = TextToUnicodeConverter_Impl::getInstance().convert(
+            pathname.getStr() + pathname.getLength() - convert, convert, s, n,
+            (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
+             | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR | RTL_TEXTTOUNICODE_FLAGS_FLUSH),
+            &info, &converted);
+        ubuf.setLength(n);
+        buf.append(
+            rtl::Uri::encode(
+                ubuf.makeStringAndClear(), uriCharClass.data(), rtl_UriEncodeIgnoreEscapes,
+                RTL_TEXTENCODING_UTF8));
+        assert(converted <= convert);
+        convert -= converted;
+        if ((info & RTL_TEXTTOUNICODE_INFO_ERROR) != 0) {
+            assert(convert > 0);
+            //TODO: see writeEscapeOctet in sal/rtl/uri.cxx
+            buf.append("%");
+            unsigned char c = pathname[pathname.getLength() - convert];
+            assert(c >= 0x80);
+            static sal_Unicode const aHex[16]
+                = { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+                    0x41, 0x42, 0x43, 0x44, 0x45, 0x46 }; /* '0'--'9', 'A'--'F' */
+            buf.append(aHex[c >> 4]);
+            buf.append(aHex[c & 15]);
+            --convert;
+            continue;
+        }
+        assert((convert == 0) == ((info & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL) == 0));
+        if ((info & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL) == 0) {
+            break;
+        }
+    }
+    *url = buf.makeStringAndClear();
+    return osl_File_E_None;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_url.hxx b/sal/osl/unx/file_url.hxx
new file mode 100644
index 000000000..3ffd9e06b
--- /dev/null
+++ b/sal/osl/unx/file_url.hxx
@@ -0,0 +1,50 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_FILE_URL_HXX
+#define INCLUDED_SAL_OSL_UNX_FILE_URL_HXX
+
+#include <osl/file.h>
+
+namespace rtl {
+    class OString;
+    class OUString;
+}
+
+oslFileError getSystemPathFromFileURL_Ex(rtl_uString *ustrFileURL, rtl_uString **pustrSystemPath);
+
+oslFileError FileURLToPath(char * buffer, size_t bufLen, rtl_uString* ustrFileURL);
+
+int UnicodeToText(char * buffer, size_t bufLen, const sal_Unicode * uniText, sal_Int32 uniTextLen);
+
+int TextToUnicode(const char* text, size_t text_buffer_size, sal_Unicode* unic_text, sal_Int32 unic_text_buffer_size);
+
+namespace osl::detail {
+
+oslFileError convertUrlToPathname(rtl::OUString const & url, rtl::OString * pathname);
+
+oslFileError convertPathnameToUrl(rtl::OString const & pathname, rtl::OUString * url);
+
+bool find_in_PATH(const rtl::OUString& file_path, rtl::OUString& result);
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/file_volume.cxx b/sal/osl/unx/file_volume.cxx
new file mode 100644
index 000000000..5e661bd65
--- /dev/null
+++ b/sal/osl/unx/file_volume.cxx
@@ -0,0 +1,336 @@
+/* -*- 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 <sal/config.h>
+
+#include <osl/file.h>
+
+#include <osl/diagnose.h>
+#include <osl/thread.h>
+#include <rtl/alloc.h>
+
+#include "file_error_transl.hxx"
+#include "file_url.hxx"
+#include "system.hxx"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <sal/macros.h>
+
+#ifdef HAVE_STATFS_H
+#undef HAVE_STATFS_H
+#endif
+
+#if defined(LINUX) && defined(__FreeBSD_kernel__)
+#undef LINUX
+#define FREEBSD 1
+#endif
+
+#if defined(__sun)
+
+#include <sys/mnttab.h>
+#include <sys/statvfs.h>
+#define  HAVE_STATFS_H
+
+#elif defined(LINUX)
+
+#include <mntent.h>
+#include <sys/vfs.h>
+#define  HAVE_STATFS_H
+
+#elif defined(NETBSD) || defined(FREEBSD) || defined(OPENBSD) || defined(DRAGONFLY)
+
+#include <sys/param.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+#define  HAVE_STATFS_H
+
+#elif defined(MACOSX)
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#define HAVE_STATFS_H
+
+#endif /* HAVE_STATFS_H */
+
+/************************************************************************
+ *   ToDo
+ *
+ *   - Fix: check for corresponding struct sizes in exported functions
+ *   - check size/use of oslVolumeInfo
+ ***********************************************************************/
+
+/******************************************************************************
+ *
+ *                  C-String Function Declarations
+ *
+ *****************************************************************************/
+
+static oslFileError osl_psz_getVolumeInformation(const char* , oslVolumeInfo* pInfo, sal_uInt32 uFieldMask);
+
+/****************************************************************************/
+/*  osl_getVolumeInformation */
+/****************************************************************************/
+
+oslFileError osl_getVolumeInformation( rtl_uString* ustrDirectoryURL, oslVolumeInfo* pInfo, sal_uInt32 uFieldMask )
+{
+    char path[PATH_MAX];
+    oslFileError eRet;
+
+    OSL_ASSERT( ustrDirectoryURL );
+    OSL_ASSERT( pInfo );
+
+    /* convert directory url to system path */
+    eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL );
+    if( eRet != osl_File_E_None )
+        return eRet;
+
+#ifdef MACOSX
+    if ( macxp_resolveAlias( path, PATH_MAX ) != 0 )
+      return oslTranslateFileError( errno );
+#endif/* MACOSX */
+
+    return osl_psz_getVolumeInformation( path, pInfo, uFieldMask);
+}
+
+/******************************************************************************
+ *
+ *                  C-String Versions of Exported Module Functions
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_STATFS_H
+
+#if defined(FREEBSD) || defined(MACOSX) || defined(OPENBSD) || defined(DRAGONFLY)
+#   define OSL_detail_STATFS_STRUCT                  struct statfs
+#   define OSL_detail_STATFS(dir, sfs)               statfs((dir), (sfs))
+#   define OSL_detail_STATFS_BLKSIZ(a)               (static_cast<sal_uInt64>((a).f_bsize))
+#   define OSL_detail_STATFS_TYPENAME(a)             ((a).f_fstypename)
+#if defined(OPENBSD)
+#   define OSL_detail_STATFS_ISREMOTE(a)             (rtl_str_compare((a).f_fstypename, "nfs") == 0)
+#else
+#   define OSL_detail_STATFS_ISREMOTE(a)             (((a).f_type & MNT_LOCAL) == 0)
+#endif
+
+/* always return true if queried for the properties of
+   the file system. If you think this is wrong under any
+   of the target platforms fix it!!!! */
+#   define OSL_detail_STATFS_IS_CASE_SENSITIVE_FS(a)  (true)
+#   define OSL_detail_STATFS_IS_CASE_PRESERVING_FS(a) (true)
+#endif /* FREEBSD || MACOSX || OPENBSD */
+
+#if defined(NETBSD)
+
+#   define OSL_detail_STATFS_STRUCT              struct statvfs
+#   define OSL_detail_STATFS(dir, sfs)           statvfs((dir), (sfs))
+#   define OSL_detail_STATFS_ISREMOTE(a)         (((a).f_flag & ST_LOCAL) == 0)
+
+#   define OSL_detail_STATFS_BLKSIZ(a)           ((sal_uInt64)((a).f_bsize))
+#   define OSL_detail_STATFS_TYPENAME(a)         ((a).f_fstypename)
+
+#   define OSL_detail_STATFS_IS_CASE_SENSITIVE_FS(a) (strcmp((a).f_fstypename, "msdos") != 0 && strcmp((a).f_fstypename, "ntfs") != 0 && strcmp((a).f_fstypename, "smbfs") != 0)
+#   define OSL_detail_STATFS_IS_CASE_PRESERVING_FS(a)    (strcmp((a).f_fstypename, "msdos") != 0)
+#endif /* NETBSD */
+
+#if defined(LINUX)
+#   define OSL_detail_NFS_SUPER_MAGIC                 0x6969
+#   define OSL_detail_SMB_SUPER_MAGIC                 0x517B
+#   define OSL_detail_MSDOS_SUPER_MAGIC               0x4d44
+#   define OSL_detail_NTFS_SUPER_MAGIC                0x5346544e
+#   define OSL_detail_STATFS_STRUCT                   struct statfs
+#   define OSL_detail_STATFS(dir, sfs)                statfs((dir), (sfs))
+#   define OSL_detail_STATFS_BLKSIZ(a)                (static_cast<sal_uInt64>((a).f_bsize))
+#   define OSL_detail_STATFS_IS_NFS(a)                (OSL_detail_NFS_SUPER_MAGIC == (a).f_type)
+#   define OSL_detail_STATFS_IS_SMB(a)                (OSL_detail_SMB_SUPER_MAGIC == (a).f_type)
+#   define OSL_detail_STATFS_ISREMOTE(a)              (OSL_detail_STATFS_IS_NFS((a)) || OSL_detail_STATFS_IS_SMB((a)))
+#   define OSL_detail_STATFS_IS_CASE_SENSITIVE_FS(a)  ((OSL_detail_MSDOS_SUPER_MAGIC != (a).f_type) && (OSL_detail_NTFS_SUPER_MAGIC != (a).f_type))
+#   define OSL_detail_STATFS_IS_CASE_PRESERVING_FS(a) ((OSL_detail_MSDOS_SUPER_MAGIC != (a).f_type))
+#endif /* LINUX */
+
+#if defined(__sun)
+#   define OSL_detail_STATFS_STRUCT                   struct statvfs
+#   define OSL_detail_STATFS(dir, sfs)                statvfs((dir), (sfs))
+#   define OSL_detail_STATFS_BLKSIZ(a)                ((sal_uInt64)((a).f_frsize))
+#   define OSL_detail_STATFS_TYPENAME(a)              ((a).f_basetype)
+#   define OSL_detail_STATFS_ISREMOTE(a)              (rtl_str_compare((a).f_basetype, "nfs") == 0)
+
+/* always return true if queried for the properties of
+   the file system. If you think this is wrong under any
+   of the target platforms fix it!!!! */
+#   define OSL_detail_STATFS_IS_CASE_SENSITIVE_FS(a)  (true)
+#   define OSL_detail_STATFS_IS_CASE_PRESERVING_FS(a) (true)
+#endif /* __sun */
+
+#   define OSL_detail_STATFS_INIT(a)         (memset(&(a), 0, sizeof(OSL_detail_STATFS_STRUCT)))
+
+#else /* no statfs available */
+
+#   define OSL_detail_STATFS_STRUCT                   struct dummy {int i;}
+#   define OSL_detail_STATFS_INIT(a)                  ((void)a)
+#   define OSL_detail_STATFS(dir, sfs)                (1)
+#   define OSL_detail_STATFS_ISREMOTE(sfs)            (false)
+#   define OSL_detail_STATFS_IS_CASE_SENSITIVE_FS(a)  (true)
+#   define OSL_detail_STATFS_IS_CASE_PRESERVING_FS(a) (true)
+#endif /* HAVE_STATFS_H */
+
+static oslFileError osl_psz_getVolumeInformation (
+    const char* pszDirectory, oslVolumeInfo* pInfo, sal_uInt32 uFieldMask)
+{
+    if (!pInfo)
+        return osl_File_E_INVAL;
+
+    pInfo->uValidFields = 0;
+    pInfo->uAttributes  = 0;
+    pInfo->uTotalSpace = 0;
+    pInfo->uFreeSpace  = 0;
+    pInfo->uUsedSpace  = 0;
+
+    if ((uFieldMask
+         & (osl_VolumeInfo_Mask_Attributes | osl_VolumeInfo_Mask_TotalSpace
+            | osl_VolumeInfo_Mask_UsedSpace | osl_VolumeInfo_Mask_FreeSpace
+            | osl_VolumeInfo_Mask_FileSystemName
+            | osl_VolumeInfo_Mask_FileSystemCaseHandling))
+        != 0)
+    {
+        OSL_detail_STATFS_STRUCT sfs;
+        OSL_detail_STATFS_INIT(sfs);
+        // coverity[fs_check_call : FALSE]
+        if ((OSL_detail_STATFS(pszDirectory, &sfs)) < (0))
+        {
+            oslFileError result = oslTranslateFileError(errno);
+            return result;
+        }
+
+        /* FIXME: how to detect the kind of storage (fixed, cdrom, ...) */
+        if (uFieldMask & osl_VolumeInfo_Mask_Attributes)
+        {
+            bool const remote = OSL_detail_STATFS_ISREMOTE(sfs);
+                // extracted from the 'if' to avoid Clang -Wunreachable-code
+            if (remote)
+                pInfo->uAttributes  |= osl_Volume_Attribute_Remote;
+
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;
+        }
+
+        if (uFieldMask & osl_VolumeInfo_Mask_FileSystemCaseHandling)
+        {
+            if (OSL_detail_STATFS_IS_CASE_SENSITIVE_FS(sfs))
+                pInfo->uAttributes |= osl_Volume_Attribute_Case_Sensitive;
+
+            if (OSL_detail_STATFS_IS_CASE_PRESERVING_FS(sfs))
+                pInfo->uAttributes |= osl_Volume_Attribute_Case_Is_Preserved;
+
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_Attributes;
+        }
+
+#if defined(OSL_detail_STATFS_BLKSIZ)
+
+        if ((uFieldMask & osl_VolumeInfo_Mask_TotalSpace) ||
+            (uFieldMask & osl_VolumeInfo_Mask_UsedSpace))
+        {
+            pInfo->uTotalSpace   = OSL_detail_STATFS_BLKSIZ(sfs);
+            pInfo->uTotalSpace  *= static_cast<sal_uInt64>(sfs.f_blocks);
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_TotalSpace;
+        }
+
+        if ((uFieldMask & osl_VolumeInfo_Mask_FreeSpace) ||
+            (uFieldMask & osl_VolumeInfo_Mask_UsedSpace))
+        {
+            pInfo->uFreeSpace = OSL_detail_STATFS_BLKSIZ(sfs);
+
+            if (getuid() == 0)
+                pInfo->uFreeSpace *= static_cast<sal_uInt64>(sfs.f_bfree);
+            else
+                pInfo->uFreeSpace *= static_cast<sal_uInt64>(sfs.f_bavail);
+
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_FreeSpace;
+        }
+
+        if ((pInfo->uValidFields & osl_VolumeInfo_Mask_TotalSpace) &&
+            (pInfo->uValidFields & osl_VolumeInfo_Mask_FreeSpace ))
+        {
+            pInfo->uUsedSpace    = pInfo->uTotalSpace - pInfo->uFreeSpace;
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_UsedSpace;
+        }
+
+#endif  /* OSL_detail_STATFS_BLKSIZ */
+
+#if defined(OSL_detail_STATFS_TYPENAME)
+
+        if (uFieldMask & osl_VolumeInfo_Mask_FileSystemName)
+        {
+            rtl_string2UString(
+                &(pInfo->ustrFileSystemName),
+                OSL_detail_STATFS_TYPENAME(sfs),
+                rtl_str_getLength(OSL_detail_STATFS_TYPENAME(sfs)),
+                osl_getThreadTextEncoding(),
+                OUSTRING_TO_OSTRING_CVTFLAGS);
+            OSL_ASSERT(pInfo->ustrFileSystemName != nullptr);
+
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_FileSystemName;
+        }
+
+#endif /* OSL_detail_STATFS_TYPENAME */
+    }
+
+    pInfo->uMaxNameLength = 0;
+    if (uFieldMask & osl_VolumeInfo_Mask_MaxNameLength)
+    {
+        long nLen = pathconf(pszDirectory, _PC_NAME_MAX);
+        if (nLen > 0)
+        {
+            pInfo->uMaxNameLength = static_cast<sal_uInt32>(nLen);
+            pInfo->uValidFields |= osl_VolumeInfo_Mask_MaxNameLength;
+        }
+    }
+
+    pInfo->uMaxPathLength = 0;
+    if (uFieldMask & osl_VolumeInfo_Mask_MaxPathLength)
+    {
+        long nLen = pathconf (pszDirectory, _PC_PATH_MAX);
+        if (nLen > 0)
+        {
+            pInfo->uMaxPathLength  = static_cast<sal_uInt32>(nLen);
+            pInfo->uValidFields   |= osl_VolumeInfo_Mask_MaxPathLength;
+        }
+    }
+
+    return osl_File_E_None;
+}
+
+oslFileError osl_getVolumeDeviceMountPath( oslVolumeDeviceHandle, rtl_uString ** )
+{
+    return osl_File_E_INVAL;
+}
+
+oslFileError osl_acquireVolumeDeviceHandle( oslVolumeDeviceHandle )
+{
+    return osl_File_E_INVAL;
+}
+
+oslFileError osl_releaseVolumeDeviceHandle( oslVolumeDeviceHandle )
+{
+    return osl_File_E_INVAL;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/interlck.cxx b/sal/osl/unx/interlck.cxx
new file mode 100644
index 000000000..81404cb57
--- /dev/null
+++ b/sal/osl/unx/interlck.cxx
@@ -0,0 +1,95 @@
+/* -*- 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 "system.hxx"
+
+#include <config_global.h>
+#include <osl/interlck.h>
+
+#if  ( defined (__sun) || defined ( NETBSD ) ) && defined ( SPARC )
+#error please use asm/interlck_sparc.s
+#elif defined (__sun) && defined ( X86 )
+#error please use asm/interlck_x86.s
+#elif HAVE_GCC_BUILTIN_ATOMIC
+oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    return __sync_add_and_fetch(pCount, 1);
+}
+oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    return __sync_sub_and_fetch(pCount, 1);
+}
+#elif defined ( __GNUC__ ) && ( defined ( X86 ) || defined ( X86_64 ) )
+/* That's possible on x86-64 too since oslInterlockedCount is a sal_Int32 */
+
+oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    register oslInterlockedCount nCount asm("%eax");
+    nCount = 1;
+    __asm__ __volatile__ (
+        "lock\n\t"
+        "xaddl %0, %1\n\t"
+    :   "+r" (nCount), "+m" (*pCount)
+    :   /* nothing */
+    :   "memory");
+    return ++nCount;
+}
+
+oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    register oslInterlockedCount nCount asm("%eax");
+    nCount = -1;
+    __asm__ __volatile__ (
+        "lock\n\t"
+        "xaddl %0, %1\n\t"
+    :   "+r" (nCount), "+m" (*pCount)
+    :   /* nothing */
+    :   "memory");
+    return --nCount;
+}
+#else
+/* use only if nothing else works, expensive due to single mutex for all reference counts */
+
+static pthread_mutex_t InterLock = PTHREAD_MUTEX_INITIALIZER;
+
+oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    oslInterlockedCount Count;
+
+    pthread_mutex_lock(&InterLock);
+    Count = ++(*pCount);
+    pthread_mutex_unlock(&InterLock);
+
+    return Count;
+}
+
+oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    oslInterlockedCount Count;
+
+    pthread_mutex_lock(&InterLock);
+    Count = --(*pCount);
+    pthread_mutex_unlock(&InterLock);
+
+    return Count;
+}
+
+#endif /* default */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/memory.cxx b/sal/osl/unx/memory.cxx
new file mode 100644
index 000000000..be3e41fb5
--- /dev/null
+++ b/sal/osl/unx/memory.cxx
@@ -0,0 +1,35 @@
+/* -*- 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/.
+ */
+
+#include <oslmemory.h>
+
+#include <stdlib.h>
+#ifdef __ANDROID__
+#include <malloc.h>
+#endif
+
+void* osl_aligned_alloc(sal_Size align, sal_Size size)
+{
+    if (size == 0)
+    {
+        return nullptr;
+    }
+
+#if defined __ANDROID__
+    return memalign(align, size);
+#else
+    void* ptr;
+    int err = posix_memalign(&ptr, align, size);
+    return err ? nullptr : ptr;
+#endif
+}
+
+void osl_aligned_free(void* p) { free(p); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/module.cxx b/sal/osl/unx/module.cxx
new file mode 100644
index 000000000..606c8fa47
--- /dev/null
+++ b/sal/osl/unx/module.cxx
@@ -0,0 +1,344 @@
+/* -*- 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 <sal/config.h>
+
+#include <sal/log.hxx>
+#include <sal/types.h>
+#include <osl/module.h>
+#include <osl/thread.h>
+#include <osl/process.h>
+#include <osl/file.h>
+#include <rtl/string.hxx>
+#include <rtl/ustring.hxx>
+#include <assert.h>
+#include "system.hxx"
+#include "file_url.hxx"
+
+#ifdef AIX
+#include <sys/ldr.h>
+#endif
+
+static bool getModulePathFromAddress(void * address, rtl_String ** path)
+{
+    bool result = false;
+#if defined(AIX)
+    int size = 4 * 1024;
+    char *buf, *filename=NULL;
+    struct ld_info *lp;
+
+    if ((buf = (char*)malloc(size)) == NULL)
+        return false;
+
+    //figure out how big a buffer we need
+    while (loadquery(L_GETINFO, buf, size) == -1 && errno == ENOMEM)
+    {
+        size += 4 * 1024;
+        free(buf);
+        if ((buf = (char*)malloc(size)) == NULL)
+            return false;
+    }
+
+    lp = (struct ld_info*) buf;
+    while (lp)
+    {
+        unsigned long start = (unsigned long)lp->ldinfo_dataorg;
+        unsigned long end = start + lp->ldinfo_datasize;
+        if (start <= (unsigned long)address && end > (unsigned long)address)
+        {
+            filename = lp->ldinfo_filename;
+            break;
+        }
+        if (!lp->ldinfo_next)
+            break;
+        lp = (struct ld_info*) ((char *) lp + lp->ldinfo_next);
+    }
+
+    if (filename)
+    {
+        rtl_string_newFromStr(path, filename);
+        result = sal_True;
+    }
+    else
+    {
+        result = sal_False;
+    }
+
+    free(buf);
+#else
+#if HAVE_UNIX_DLAPI
+    Dl_info dl_info;
+
+    result = dladdr(address, &dl_info) != 0;
+
+    if (result)
+    {
+        rtl_string_newFromStr(path, dl_info.dli_fname);
+    }
+#else
+    (void) address;
+    (void) path;
+#endif
+#endif
+    return result;
+}
+
+#ifndef DISABLE_DYNLOADING
+
+/*****************************************************************************/
+/* osl_loadModule */
+/*****************************************************************************/
+
+oslModule SAL_CALL osl_loadModule(rtl_uString *ustrModuleName, sal_Int32 nRtldMode)
+{
+    oslModule pModule=nullptr;
+    rtl_uString* ustrTmp = nullptr;
+
+    SAL_WARN_IF(ustrModuleName == nullptr, "sal.osl", "string is not valid");
+
+    /* ensure ustrTmp hold valid string */
+    if (osl_getSystemPathFromFileURL(ustrModuleName, &ustrTmp) != osl_File_E_None)
+        rtl_uString_assign(&ustrTmp, ustrModuleName);
+
+    if (ustrTmp)
+    {
+        char buffer[PATH_MAX];
+
+        if (UnicodeToText(buffer, PATH_MAX, ustrTmp->buffer, ustrTmp->length))
+            pModule = osl_loadModuleAscii(buffer, nRtldMode);
+        rtl_uString_release(ustrTmp);
+    }
+
+    return pModule;
+}
+
+/*****************************************************************************/
+/* osl_loadModuleAscii */
+/*****************************************************************************/
+
+oslModule SAL_CALL osl_loadModuleAscii(const char *pModuleName, sal_Int32 nRtldMode)
+{
+#if HAVE_UNIX_DLAPI
+    SAL_WARN_IF(
+        ((nRtldMode & SAL_LOADMODULE_LAZY) != 0
+         && (nRtldMode & SAL_LOADMODULE_NOW) != 0),
+        "sal.osl", "only either LAZY or NOW");
+    if (pModuleName)
+    {
+        int rtld_mode =
+            ((nRtldMode & SAL_LOADMODULE_NOW) ? RTLD_NOW : RTLD_LAZY) |
+            ((nRtldMode & SAL_LOADMODULE_GLOBAL) ? RTLD_GLOBAL : RTLD_LOCAL);
+        void* pLib = dlopen(pModuleName, rtld_mode);
+
+        SAL_WARN_IF(
+            pLib == nullptr, "sal.osl",
+            "dlopen(" << pModuleName << ", " << rtld_mode << "): "
+                << dlerror());
+        return pLib;
+    }
+#else
+    (void) pModuleName;
+    (void) nRtldMode;
+#endif
+    return nullptr;
+}
+
+oslModule osl_loadModuleRelativeAscii(
+    oslGenericFunction baseModule, char const * relativePath, sal_Int32 mode)
+{
+    assert(relativePath && "illegal argument");
+    if (relativePath[0] == '/') {
+        return osl_loadModuleAscii(relativePath, mode);
+    }
+    rtl_String * path = nullptr;
+    rtl_String * suffix = nullptr;
+    oslModule module;
+    if (!getModulePathFromAddress(
+            reinterpret_cast< void * >(baseModule), &path))
+    {
+        return nullptr;
+    }
+    rtl_string_newFromStr_WithLength(
+        &path, path->buffer,
+        (rtl_str_lastIndexOfChar_WithLength(path->buffer, path->length, '/')
+         + 1));
+        /* cut off everything after the last slash; should the original path
+           contain no slash, the resulting path is the empty string */
+    rtl_string_newFromStr(&suffix, relativePath);
+    rtl_string_newConcat(&path, path, suffix);
+    rtl_string_release(suffix);
+    module = osl_loadModuleAscii(path->buffer, mode);
+    rtl_string_release(path);
+    return module;
+}
+
+#endif // !DISABLE_DYNLOADING
+
+/*****************************************************************************/
+/* osl_getModuleHandle */
+/*****************************************************************************/
+
+sal_Bool SAL_CALL
+osl_getModuleHandle(rtl_uString *, oslModule *pResult)
+{
+#if HAVE_UNIX_DLAPI
+    *pResult = static_cast<oslModule>(RTLD_DEFAULT);
+    return true;
+#else
+    *pResult = nullptr;
+    return false;
+#endif
+}
+
+/*****************************************************************************/
+/* osl_unloadModule */
+/*****************************************************************************/
+void SAL_CALL osl_unloadModule(oslModule hModule)
+{
+#if !defined(DISABLE_DYNLOADING) && HAVE_UNIX_DLAPI
+    if (hModule)
+    {
+        int nRet = dlclose(hModule);
+        SAL_INFO_IF(
+            nRet != 0, "sal.osl", "dlclose(" << hModule << "): " << dlerror());
+    }
+#else
+    (void) hModule;
+#endif
+}
+
+namespace {
+
+void * getSymbol(oslModule module, char const * symbol)
+{
+    assert(symbol != nullptr);
+#if HAVE_UNIX_DLAPI
+    // We do want to use dlsym() also in the DISABLE_DYNLOADING case
+    // just to look up symbols in the static executable, I think:
+    void * p = dlsym(module, symbol);
+    SAL_INFO_IF(
+        p == nullptr, "sal.osl",
+        "dlsym(" << module << ", " << symbol << "): " << dlerror());
+#else
+    (void) module;
+    (void) symbol;
+    void *p = nullptr;
+#endif
+    return p;
+}
+
+}
+
+/*****************************************************************************/
+/* osl_getSymbol */
+/*****************************************************************************/
+void* SAL_CALL
+osl_getSymbol(oslModule Module, rtl_uString* pSymbolName)
+{
+    // Arbitrarily using UTF-8:
+    OString s;
+    if (!OUString::unacquired(&pSymbolName).convertToString(
+            &s, RTL_TEXTENCODING_UTF8,
+            (RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR |
+             RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR)))
+    {
+        SAL_INFO(
+            "sal.osl", "cannot convert \"" << OUString::unacquired(&pSymbolName)
+                << "\" to UTF-8");
+        return nullptr;
+    }
+    if (s.indexOf('\0') != -1) {
+        SAL_INFO("sal.osl", "\"" << s << "\" contains embedded NUL");
+        return nullptr;
+    }
+    return getSymbol(Module, s.getStr());
+}
+
+/*****************************************************************************/
+/* osl_getAsciiFunctionSymbol */
+/*****************************************************************************/
+oslGenericFunction SAL_CALL
+osl_getAsciiFunctionSymbol(oslModule Module, const char *pSymbol)
+{
+    return reinterpret_cast<oslGenericFunction>(getSymbol(Module, pSymbol));
+        // requires conditionally-supported conversion from void * to function
+        // pointer
+}
+
+/*****************************************************************************/
+/* osl_getFunctionSymbol */
+/*****************************************************************************/
+oslGenericFunction SAL_CALL
+osl_getFunctionSymbol(oslModule module, rtl_uString *puFunctionSymbolName)
+{
+    return reinterpret_cast<oslGenericFunction>(
+        osl_getSymbol(module, puFunctionSymbolName));
+        // requires conditionally-supported conversion from void * to function
+        // pointer
+}
+
+/*****************************************************************************/
+/* osl_getModuleURLFromAddress */
+/*****************************************************************************/
+sal_Bool SAL_CALL osl_getModuleURLFromAddress(void * addr, rtl_uString ** ppLibraryUrl)
+{
+    bool result = false;
+    rtl_String * path = nullptr;
+    if (getModulePathFromAddress(addr, &path))
+    {
+        rtl_string2UString(ppLibraryUrl,
+                           path->buffer,
+                           path->length,
+                           osl_getThreadTextEncoding(),
+                           OSTRING_TO_OUSTRING_CVTFLAGS);
+
+        SAL_WARN_IF(
+            *ppLibraryUrl == nullptr, "sal.osl", "rtl_string2UString failed");
+        auto const e = osl_getFileURLFromSystemPath(*ppLibraryUrl, ppLibraryUrl);
+        if (e == osl_File_E_None)
+        {
+            SAL_INFO("sal.osl", "osl_getModuleURLFromAddress(" << addr << ") => " << OUString(*ppLibraryUrl));
+
+            result = true;
+        }
+        else
+        {
+            SAL_WARN(
+                "sal.osl",
+                "osl_getModuleURLFromAddress(" << addr << "), osl_getFileURLFromSystemPath("
+                    << OUString::unacquired(ppLibraryUrl) << ") failed with " << e);
+            result = false;
+        }
+        rtl_string_release(path);
+    }
+    return result;
+}
+
+/*****************************************************************************/
+/* osl_getModuleURLFromFunctionAddress */
+/*****************************************************************************/
+sal_Bool SAL_CALL osl_getModuleURLFromFunctionAddress(oslGenericFunction addr, rtl_uString ** ppLibraryUrl)
+{
+    return osl_getModuleURLFromAddress(
+        reinterpret_cast<void*>(addr), ppLibraryUrl);
+        // requires conditionally-supported conversion from function pointer to
+        // void *
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/mutex.cxx b/sal/osl/unx/mutex.cxx
new file mode 100644
index 000000000..1ca4958fd
--- /dev/null
+++ b/sal/osl/unx/mutex.cxx
@@ -0,0 +1,163 @@
+/* -*- 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 .
+ */
+
+#if defined LINUX
+// to define __USE_UNIX98, via _XOPEN_SOURCE, enabling pthread_mutexattr_settype
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+#endif
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+
+#include <sal/log.hxx>
+#include <osl/mutex.h>
+
+#include <pthread.h>
+#include <stdlib.h>
+
+
+typedef struct _oslMutexImpl
+{
+    pthread_mutex_t mutex;
+} oslMutexImpl;
+
+oslMutex SAL_CALL osl_createMutex()
+{
+    oslMutexImpl* pMutex = static_cast<oslMutexImpl*>(malloc(sizeof(oslMutexImpl)));
+    pthread_mutexattr_t aMutexAttr;
+    int nRet=0;
+
+    SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
+
+    if ( pMutex == nullptr )
+    {
+        return nullptr;
+    }
+
+    pthread_mutexattr_init(&aMutexAttr);
+
+    nRet = pthread_mutexattr_settype(&aMutexAttr, PTHREAD_MUTEX_RECURSIVE);
+    if( nRet == 0 )
+        nRet = pthread_mutex_init(&(pMutex->mutex), &aMutexAttr);
+    if ( nRet != 0 )
+    {
+        SAL_WARN("sal.osl.mutex", "pthread_muxex_init failed: " << UnixErrnoString(nRet));
+
+        free(pMutex);
+        pMutex = nullptr;
+    }
+
+    pthread_mutexattr_destroy(&aMutexAttr);
+
+    return pMutex;
+}
+
+void SAL_CALL osl_destroyMutex(oslMutex pMutex)
+{
+    SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
+
+    if ( pMutex != nullptr )
+    {
+        int nRet = pthread_mutex_destroy(&(pMutex->mutex));
+        if ( nRet != 0 )
+        {
+            SAL_WARN("sal.osl.mutex", "pthread_mutex_destroy failed: " << UnixErrnoString(nRet));
+        }
+
+        free(pMutex);
+    }
+}
+
+#ifdef __COVERITY__
+    extern void __coverity_recursive_lock_acquire__(void*);
+    extern void __coverity_recursive_lock_release__(void*);
+    extern void __coverity_assert_locked__(void*);
+#endif
+
+sal_Bool SAL_CALL osl_acquireMutex(oslMutex pMutex)
+{
+    SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
+
+    if ( pMutex != nullptr )
+    {
+        int nRet = pthread_mutex_lock(&(pMutex->mutex));
+        if ( nRet != 0 )
+        {
+            SAL_WARN("sal.osl.mutex", "pthread_mutex_lock failed: " << UnixErrnoString(nRet));
+            return false;
+        }
+#ifdef __COVERITY__
+    __coverity_recursive_lock_acquire__(pMutex);
+#endif
+        return true;
+    }
+
+    /* not initialized */
+    return false;
+}
+
+sal_Bool SAL_CALL osl_tryToAcquireMutex(oslMutex pMutex)
+{
+    bool result = false;
+
+    SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
+
+    if ( pMutex )
+    {
+        int nRet = pthread_mutex_trylock(&(pMutex->mutex));
+        if ( nRet == 0  )
+        {
+#ifdef __COVERITY__
+            __coverity_recursive_lock_acquire__(pMutex);
+#endif
+            result = true;
+        }
+    }
+
+    return result;
+}
+
+sal_Bool SAL_CALL osl_releaseMutex(oslMutex pMutex)
+{
+#ifdef __COVERITY__
+    __coverity_assert_locked__(pMutex);
+#endif
+    SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
+
+    if ( pMutex )
+    {
+        int nRet = pthread_mutex_unlock(&(pMutex->mutex));
+        if ( nRet != 0 )
+        {
+            SAL_WARN("sal.osl.mutex", "pthread_mutex_unlock failed: " << UnixErrnoString(nRet));
+            return false;
+        }
+
+#ifdef __COVERITY__
+            __coverity_recursive_lock_release__(pMutex);
+#endif
+        return true;
+    }
+
+    /* not initialized */
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/nlsupport.cxx b/sal/osl/unx/nlsupport.cxx
new file mode 100644
index 000000000..2780a7fdd
--- /dev/null
+++ b/sal/osl/unx/nlsupport.cxx
@@ -0,0 +1,872 @@
+/* -*- 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 <sal/config.h>
+
+#include <algorithm>
+#include <cstring>
+
+#include <osl/nlsupport.h>
+#include <osl/diagnose.h>
+#include <osl/process.h>
+#include <rtl/string.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+
+#include "nlsupport.hxx"
+
+// these share a lot, so use one define
+#if defined(LINUX) || defined(EMSCRIPTEN) || defined(__sun) || \
+    defined(FREEBSD) || defined(OPENBSD) || defined(DRAGONFLY) || defined(NETBSD)
+#define LO_COMMON_NLS_ARCHS 1
+#else
+#define LO_COMMON_NLS_ARCHS 0
+#endif
+
+#if LO_COMMON_NLS_ARCHS
+#include <locale.h>
+#include <langinfo.h>
+#elif defined(MACOSX) || defined(IOS)
+#include <osl/module.h>
+#include <osl/thread.h>
+#include "system.hxx"
+#endif
+
+#include <string.h>
+
+namespace {
+
+struct Pair {
+    const char              *key;
+    const rtl_TextEncoding   value;
+};
+
+}
+
+/*****************************************************************************
+ compare function for binary search
+ *****************************************************************************/
+
+static int
+pair_compare (const char *key, const Pair *pair)
+{
+    int result = rtl_str_compareIgnoreAsciiCase( key, pair->key );
+    return result;
+}
+
+/*****************************************************************************
+ binary search on encoding tables
+ *****************************************************************************/
+
+static const Pair*
+pair_search (const char *key, const Pair *base, unsigned int member )
+{
+    unsigned int lower = 0;
+    unsigned int upper = member;
+
+    /* check for validity of input */
+    if ( (key == nullptr) || (base == nullptr) || (member == 0) )
+        return nullptr;
+
+    /* binary search */
+    while ( lower < upper )
+    {
+        const unsigned int current = (lower + upper) / 2;
+        const int comparison = pair_compare( key, base + current );
+        if (comparison < 0)
+            upper = current;
+        else if (comparison > 0)
+            lower = current + 1;
+        else
+            return base + current;
+    }
+
+    return nullptr;
+}
+
+/*****************************************************************************
+ convert rtl_Locale to locale string
+ *****************************************************************************/
+
+static char * compose_locale( rtl_Locale * pLocale, char * buffer, size_t n )
+{
+    /* check if a valid locale is specified */
+    if( pLocale && pLocale->Language &&
+            (pLocale->Language->length == 2 || pLocale->Language->length == 3) )
+    {
+        size_t offset = 0;
+
+        /* convert language code to ascii */
+        {
+            rtl_String *pLanguage = nullptr;
+
+            rtl_uString2String( &pLanguage,
+                pLocale->Language->buffer, pLocale->Language->length,
+                RTL_TEXTENCODING_ASCII_US, OUSTRING_TO_OSTRING_CVTFLAGS );
+
+            if( sal::static_int_cast<sal_uInt32>(pLanguage->length) < n )
+            {
+                strcpy( buffer, pLanguage->buffer );
+                offset = pLanguage->length;
+            }
+
+            rtl_string_release( pLanguage );
+        }
+
+        /* convert country code to ascii */
+        if( pLocale->Country && (pLocale->Country->length == 2) )
+        {
+            rtl_String *pCountry = nullptr;
+
+            rtl_uString2String( &pCountry,
+                pLocale->Country->buffer, pLocale->Country->length,
+                RTL_TEXTENCODING_ASCII_US, OUSTRING_TO_OSTRING_CVTFLAGS );
+
+            if( offset + pCountry->length + 1 < n )
+            {
+                strcpy( buffer + offset++, "_" );
+                strcpy( buffer + offset, pCountry->buffer );
+                offset += pCountry->length;
+            }
+
+            rtl_string_release( pCountry );
+        }
+
+        /* convert variant to ascii - check if there is enough space for the variant string */
+        if( pLocale->Variant && pLocale->Variant->length &&
+            ( sal::static_int_cast<sal_uInt32>(pLocale->Variant->length) < n - 6 ) )
+        {
+            rtl_String *pVariant = nullptr;
+
+            rtl_uString2String( &pVariant,
+                pLocale->Variant->buffer, pLocale->Variant->length,
+                RTL_TEXTENCODING_ASCII_US, OUSTRING_TO_OSTRING_CVTFLAGS );
+
+            if( offset + pVariant->length + 1 < n )
+            {
+                strcpy( buffer + offset, pVariant->buffer );
+            }
+
+            rtl_string_release( pVariant );
+        }
+
+        return buffer;
+    }
+
+    return nullptr;
+}
+
+/*****************************************************************************
+ convert locale string to rtl_Locale
+ *****************************************************************************/
+
+static rtl_Locale * parse_locale( const char * locale )
+{
+    assert(locale != nullptr);
+
+    if (*locale == '\0' || std::strcmp(locale, "C") == 0
+        || std::strcmp(locale, "POSIX") == 0)
+    {
+        return rtl_locale_register(u"C", u"", u"");
+    }
+
+    size_t len = strlen( locale );
+
+    rtl_uString * pLanguage = nullptr;
+    rtl_uString * pCountry  = nullptr;
+    rtl_uString * pVariant  = nullptr;
+
+    size_t offset = std::min<size_t>(len, 2);
+
+    rtl_Locale * ret;
+
+    /* language is a two or three letter code */
+    if( (len > 3 && locale[3] == '_') || (len == 3 && locale[2] != '_') )
+        offset = 3;
+
+    /* convert language code to unicode */
+    rtl_string2UString( &pLanguage, locale, offset, RTL_TEXTENCODING_ASCII_US, OSTRING_TO_OUSTRING_CVTFLAGS );
+    OSL_ASSERT(pLanguage != nullptr);
+
+    /* convert country code to unicode */
+    if( len >= offset+3 && locale[offset] == '_' )
+    {
+        rtl_string2UString( &pCountry, locale + offset + 1, 2, RTL_TEXTENCODING_ASCII_US, OSTRING_TO_OUSTRING_CVTFLAGS );
+        OSL_ASSERT(pCountry != nullptr);
+        offset += 3;
+    }
+
+    /* convert variant code to unicode - do not rely on "." as delimiter */
+    if( len > offset ) {
+        rtl_string2UString( &pVariant, locale + offset, len - offset, RTL_TEXTENCODING_ASCII_US, OSTRING_TO_OUSTRING_CVTFLAGS );
+        OSL_ASSERT(pVariant != nullptr);
+    }
+
+    ret =  rtl_locale_register( pLanguage->buffer, pCountry ? pCountry->buffer : u"", pVariant ? pVariant->buffer : u"" );
+
+    if (pVariant) rtl_uString_release(pVariant);
+    if (pCountry) rtl_uString_release(pCountry);
+    if (pLanguage) rtl_uString_release(pLanguage);
+
+    return ret;
+}
+
+#if LO_COMMON_NLS_ARCHS
+
+/*
+ * This implementation of osl_getTextEncodingFromLocale maps
+ * from nl_langinfo_l(CODESET) to rtl_textencoding defines.
+ * nl_langinfo() is supported only on Linux, Solaris,
+ * >= NetBSD 1.6 and >= FreeBSD 4.4
+ *
+ * _nl_language_list[] is an array list of supported encodings. Because
+ * we are using a binary search, the list has to be in ascending order.
+ * We are comparing the encodings case insensitive, so the list has
+ * to be completely upper or lowercase.
+ */
+
+#if defined(__sun)
+
+/* The values in the below list can be obtained with a script like
+ *  #!/bin/sh
+ *  for i in `locale -a`; do
+ *    LC_ALL=$i locale -k code_set_name
+ *  done
+ */
+static const Pair nl_language_list[] = {
+    { "5601",           RTL_TEXTENCODING_EUC_KR         }, /* ko_KR.EUC */
+    { "646",            RTL_TEXTENCODING_ISO_8859_1     }, /* fake: ASCII_US */
+    { "ANSI-1251",      RTL_TEXTENCODING_MS_1251        }, /* ru_RU.ANSI1251 */
+    { "BIG5",           RTL_TEXTENCODING_BIG5           }, /* zh_CN.BIG5 */
+    { "BIG5-HKSCS",     RTL_TEXTENCODING_BIG5_HKSCS     }, /* zh_CN.BIG5HK */
+    { "CNS11643",       RTL_TEXTENCODING_EUC_TW         }, /* zh_TW.EUC */
+    { "EUCJP",          RTL_TEXTENCODING_EUC_JP         }, /* ja_JP.eucjp */
+    { "GB18030",        RTL_TEXTENCODING_GB_18030       }, /* zh_CN.GB18030 */
+    { "GB2312",         RTL_TEXTENCODING_GB_2312        }, /* zh_CN */
+    { "GBK",            RTL_TEXTENCODING_GBK            }, /* zh_CN.GBK */
+    { "ISO8859-1",      RTL_TEXTENCODING_ISO_8859_1     },
+    { "ISO8859-10",     RTL_TEXTENCODING_ISO_8859_10    },
+    { "ISO8859-13",     RTL_TEXTENCODING_ISO_8859_13    }, /* lt_LT lv_LV */
+    { "ISO8859-14",     RTL_TEXTENCODING_ISO_8859_14    },
+    { "ISO8859-15",     RTL_TEXTENCODING_ISO_8859_15    },
+    { "ISO8859-2",      RTL_TEXTENCODING_ISO_8859_2     },
+    { "ISO8859-3",      RTL_TEXTENCODING_ISO_8859_3     },
+    { "ISO8859-4",      RTL_TEXTENCODING_ISO_8859_4     },
+    { "ISO8859-5",      RTL_TEXTENCODING_ISO_8859_5     },
+    { "ISO8859-6",      RTL_TEXTENCODING_ISO_8859_6     },
+    { "ISO8859-7",      RTL_TEXTENCODING_ISO_8859_7     },
+    { "ISO8859-8",      RTL_TEXTENCODING_ISO_8859_8     },
+    { "ISO8859-9",      RTL_TEXTENCODING_ISO_8859_9     },
+    { "KOI8-R",         RTL_TEXTENCODING_KOI8_R         },
+    { "KOI8-U",         RTL_TEXTENCODING_KOI8_U         },
+    { "PCK",            RTL_TEXTENCODING_MS_932         },
+    { "SUN_EU_GREEK",   RTL_TEXTENCODING_ISO_8859_7     }, /* 8859-7 + Euro */
+    { "TIS620.2533",    RTL_TEXTENCODING_MS_874         }, /* th_TH.TIS620 */
+    { "UTF-8",          RTL_TEXTENCODING_UTF8           }
+};
+
+/* XXX MS-874 is an extension to tis620, so this is not
+ * really equivalent */
+
+#elif defined(LINUX) || defined(EMSCRIPTEN)
+
+#if !defined(CODESET)
+#define CODESET _NL_CTYPE_CODESET_NAME
+#endif
+
+const Pair nl_language_list[] = {
+    { "ANSI_X3.110-1983",           RTL_TEXTENCODING_DONTKNOW   },  /* ISO-IR-99 NAPLPS */
+    { "ANSI_X3.4-1968",             RTL_TEXTENCODING_ISO_8859_1 },  /* fake: ASCII_US */
+    { "ASMO_449",                   RTL_TEXTENCODING_DONTKNOW },    /* ISO_9036 ARABIC7 */
+    { "BALTIC",                     RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-179 */
+    { "BIG5",                       RTL_TEXTENCODING_BIG5 },        /* locale: zh_TW */
+    { "BIG5-HKSCS",                 RTL_TEXTENCODING_BIG5_HKSCS },  /* locale: zh_CN.BIG5HK */
+    { "BIG5HKSCS",                  RTL_TEXTENCODING_BIG5_HKSCS },  /* deprecated */
+    { "BS_4730",                    RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-4 ISO646-GB */
+    { "BS_VIEWDATA",                RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-47 */
+    { "CP1250",                     RTL_TEXTENCODING_MS_1250 },     /* MS-EE */
+    { "CP1251",                     RTL_TEXTENCODING_MS_1251 },     /* MS-CYRL */
+    { "CP1252",                     RTL_TEXTENCODING_MS_1252 },     /* MS-ANSI */
+    { "CP1253",                     RTL_TEXTENCODING_MS_1253 },     /* MS-GREEK */
+    { "CP1254",                     RTL_TEXTENCODING_MS_1254 },     /* MS-TURK */
+    { "CP1255",                     RTL_TEXTENCODING_MS_1255 },     /* MS-HEBR */
+    { "CP1256",                     RTL_TEXTENCODING_MS_1256 },     /* MS-ARAB */
+    { "CP1257",                     RTL_TEXTENCODING_MS_1257 },     /* WINBALTRIM */
+    { "CSA_Z243.4-1985-1",          RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-121 */
+    { "CSA_Z243.4-1985-2",          RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-122 CSA7-2 */
+    { "CSA_Z243.4-1985-GR",         RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-123 */
+    { "CSN_369103",                 RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-139 */
+    { "CWI",                        RTL_TEXTENCODING_DONTKNOW },    /* CWI-2 CP-HU */
+    { "DEC-MCS",                    RTL_TEXTENCODING_DONTKNOW },    /* DEC */
+    { "DIN_66003",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-21 */
+    { "DS_2089",                    RTL_TEXTENCODING_DONTKNOW },    /* DS2089 ISO646-DK */
+    { "EBCDIC-AT-DE",               RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-AT-DE-A",             RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-CA-FR",               RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-DK-NO",               RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-DK-NO-A",             RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-ES",                  RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-ES-A",                RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-ES-S",                RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-FI-SE",               RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-FI-SE-A",             RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-FR",                  RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-IS-FRISS",            RTL_TEXTENCODING_DONTKNOW },    /*  FRISS */
+    { "EBCDIC-IT",                  RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-PT",                  RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-UK",                  RTL_TEXTENCODING_DONTKNOW },
+    { "EBCDIC-US",                  RTL_TEXTENCODING_DONTKNOW },
+    { "ECMA-CYRILLIC",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-111 */
+    { "ES",                         RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-17 */
+    { "ES2",                        RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-85 */
+    { "EUC-JP",                     RTL_TEXTENCODING_EUC_JP },      /* locale: ja_JP.eucjp */
+    { "EUC-KR",                     RTL_TEXTENCODING_EUC_KR },      /* locale: ko_KR.euckr */
+    { "EUC-TW",                     RTL_TEXTENCODING_EUC_TW },      /* locale: zh_TW.euctw */
+    { "GB18030",                    RTL_TEXTENCODING_GB_18030 },    /* locale: zh_CN.gb18030 */
+    { "GB2312",                     RTL_TEXTENCODING_GB_2312 },     /* locale: zh_CN */
+    { "GB_1988-80",                 RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-57 */
+    { "GBK",                        RTL_TEXTENCODING_GBK },         /* locale: zh_CN.GBK */
+    { "GOST_19768-74",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-153 */
+    { "GREEK-CCITT",                RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-150 */
+    { "GREEK7",                     RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-88 */
+    { "GREEK7-OLD",                 RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-18 */
+    { "HP-ROMAN8",                  RTL_TEXTENCODING_DONTKNOW },    /* ROMAN8 R8 */
+    { "IBM037",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-[US|CA|WT] */
+    { "IBM038",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-INT CP038 */
+    { "IBM1004",                    RTL_TEXTENCODING_DONTKNOW },    /* CP1004 OS2LATIN1 */
+    { "IBM1026",                    RTL_TEXTENCODING_DONTKNOW },    /* CP1026 1026 */
+    { "IBM1047",                    RTL_TEXTENCODING_DONTKNOW },    /* CP1047 1047 */
+    { "IBM256",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-INT1 */
+    { "IBM273",                     RTL_TEXTENCODING_DONTKNOW },    /* CP273 */
+    { "IBM274",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-BE CP274 */
+    { "IBM275",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-BR CP275 */
+    { "IBM277",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-CP-[DK|NO] */
+    { "IBM278",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-CP-[FISE]*/
+    { "IBM280",                     RTL_TEXTENCODING_DONTKNOW },    /* CP280 EBCDIC-CP-IT*/
+    { "IBM281",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-JP-E CP281 */
+    { "IBM284",                     RTL_TEXTENCODING_DONTKNOW },    /* CP284 EBCDIC-CP-ES */
+    { "IBM285",                     RTL_TEXTENCODING_DONTKNOW },    /* CP285 EBCDIC-CP-GB */
+    { "IBM290",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-JP-KANA */
+    { "IBM297",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-CP-FR */
+    { "IBM420",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-CP-AR1 */
+    { "IBM423",                     RTL_TEXTENCODING_DONTKNOW },    /* CP423 EBCDIC-CP-GR */
+    { "IBM424",                     RTL_TEXTENCODING_DONTKNOW },    /* CP424 EBCDIC-CP-HE */
+    { "IBM437",                     RTL_TEXTENCODING_IBM_437 },     /* CP437 437 */
+    { "IBM500",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-CP-[BE|CH] */
+    { "IBM850",                     RTL_TEXTENCODING_IBM_850 },     /* CP850 850 */
+    { "IBM851",                     RTL_TEXTENCODING_DONTKNOW },    /* CP851 851 */
+    { "IBM852",                     RTL_TEXTENCODING_IBM_852 },     /* CP852 852 */
+    { "IBM855",                     RTL_TEXTENCODING_IBM_855 },     /* CP855 855 */
+    { "IBM857",                     RTL_TEXTENCODING_IBM_857 },     /* CP857 857 */
+    { "IBM860",                     RTL_TEXTENCODING_IBM_860 },     /* CP860 860 */
+    { "IBM861",                     RTL_TEXTENCODING_IBM_861 },     /* CP861 861 CP-IS */
+    { "IBM862",                     RTL_TEXTENCODING_IBM_862 },     /* CP862 862 */
+    { "IBM863",                     RTL_TEXTENCODING_IBM_863 },     /* CP863 863 */
+    { "IBM864",                     RTL_TEXTENCODING_IBM_864 },     /* CP864 */
+    { "IBM865",                     RTL_TEXTENCODING_IBM_865 },     /* CP865 865 */
+    { "IBM866",                     RTL_TEXTENCODING_IBM_866 },     /* CP866 866 */
+    { "IBM868",                     RTL_TEXTENCODING_DONTKNOW },    /* CP868 CP-AR */
+    { "IBM869",                     RTL_TEXTENCODING_IBM_869 },     /* CP869 869 CP-GR */
+    { "IBM870",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-[ROECE|YU] */
+    { "IBM871",                     RTL_TEXTENCODING_DONTKNOW },    /* CP871 EBCDIC-CP-IS */
+    { "IBM875",                     RTL_TEXTENCODING_DONTKNOW },    /* CP875 EBCDIC-GREEK */
+    { "IBM880",                     RTL_TEXTENCODING_DONTKNOW },    /* EBCDIC-CYRILLIC */
+    { "IBM891",                     RTL_TEXTENCODING_DONTKNOW },    /* CP891 */
+    { "IBM903",                     RTL_TEXTENCODING_DONTKNOW },    /* CP903 */
+    { "IBM904",                     RTL_TEXTENCODING_DONTKNOW },    /* CP904 904 */
+    { "IBM905",                     RTL_TEXTENCODING_DONTKNOW },    /* CP905 EBCDIC-CP-TR */
+    { "IBM918",                     RTL_TEXTENCODING_DONTKNOW },    /* CP918 EBCDIC-AR2 */
+    { "IEC_P27-1",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-143 */
+    { "INIS",                       RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-49 */
+    { "INIS-8",                     RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-50 */
+    { "INIS-CYRILLIC",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-51 */
+    { "INVARIANT",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-170 */
+    { "ISO-8859-1",                 RTL_TEXTENCODING_ISO_8859_1 },  /* ISO-IR-100 CP819 */
+    { "ISO-8859-10",                RTL_TEXTENCODING_ISO_8859_10 }, /* ISO-IR-157 LATIN6 */
+    { "ISO-8859-13",                RTL_TEXTENCODING_ISO_8859_13 }, /* ISO-IR-179 LATIN7 */
+    { "ISO-8859-14",                RTL_TEXTENCODING_ISO_8859_14 }, /* LATIN8 L8 */
+    { "ISO-8859-15",                RTL_TEXTENCODING_ISO_8859_15 },
+    { "ISO-8859-2",                 RTL_TEXTENCODING_ISO_8859_2 },  /* LATIN2 L2 */
+    { "ISO-8859-3",                 RTL_TEXTENCODING_ISO_8859_3 },  /* LATIN3 L3 */
+    { "ISO-8859-4",                 RTL_TEXTENCODING_ISO_8859_4 },  /* LATIN4 L4 */
+    { "ISO-8859-5",                 RTL_TEXTENCODING_ISO_8859_5 },  /* CYRILLIC */
+    { "ISO-8859-6",                 RTL_TEXTENCODING_ISO_8859_6 },  /* ECMA-114 ARABIC */
+    { "ISO-8859-7",                 RTL_TEXTENCODING_ISO_8859_7 },  /* ECMA-118 GREEK8 */
+    { "ISO-8859-8",                 RTL_TEXTENCODING_ISO_8859_8 },  /* ISO_8859-8 HEBREW */
+    { "ISO-8859-9",                 RTL_TEXTENCODING_ISO_8859_9 },  /* ISO_8859-9 LATIN5 */
+    { "ISO-IR-90",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO_6937-2:1983 */
+    { "ISO_10367-BOX",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-155 */
+    { "ISO_2033-1983",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-98 E13B */
+    { "ISO_5427",                   RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-37 KOI-7 */
+    { "ISO_5427-EXT",               RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-54  */
+    { "ISO_5428",                   RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-55 */
+    { "ISO_646.BASIC",              RTL_TEXTENCODING_ASCII_US },    /* REF */
+    { "ISO_646.IRV",                RTL_TEXTENCODING_ASCII_US },    /* ISO-IR-2 IRV */
+    { "ISO_646.IRV:1983",           RTL_TEXTENCODING_ISO_8859_1 },  /* fake: ASCII_US, used for "C" locale*/
+    { "ISO_6937",                   RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-156 ISO6937*/
+    { "ISO_6937-2-25",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-152 */
+    { "ISO_6937-2-ADD",             RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-142 */
+    { "ISO_8859-SUPP",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-154 */
+    { "IT",                         RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-15  */
+    { "JIS_C6220-1969-JP",          RTL_TEXTENCODING_DONTKNOW },    /* KATAKANA X0201-7 */
+    { "JIS_C6220-1969-RO",          RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-14 */
+    { "JIS_C6229-1984-A",           RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-91 */
+    { "JIS_C6229-1984-B",           RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-92 */
+    { "JIS_C6229-1984-B-ADD",       RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-93 */
+    { "JIS_C6229-1984-HAND",        RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-94 */
+    { "JIS_C6229-1984-HAND-ADD",    RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-95 */
+    { "JIS_C6229-1984-KANA",        RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-96 */
+    { "JIS_X0201",                  RTL_TEXTENCODING_DONTKNOW },    /* X0201 */
+    { "JUS_I.B1.002",               RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-141 */
+    { "JUS_I.B1.003-MAC",           RTL_TEXTENCODING_DONTKNOW },    /* MACEDONIAN */
+    { "JUS_I.B1.003-SERB",          RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-146 SERBIAN */
+    { "KOI-8",                      RTL_TEXTENCODING_DONTKNOW },
+    { "KOI8-R",                     RTL_TEXTENCODING_KOI8_R },
+    { "KOI8-U",                     RTL_TEXTENCODING_KOI8_U },
+    { "KSC5636",                    RTL_TEXTENCODING_DONTKNOW },    /* ISO646-KR */
+    { "LATIN-GREEK",                RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-19 */
+    { "LATIN-GREEK-1",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-27 */
+    { "MAC-IS",                     RTL_TEXTENCODING_APPLE_ROMAN },
+    { "MAC-UK",                     RTL_TEXTENCODING_APPLE_ROMAN },
+    { "MACINTOSH",                  RTL_TEXTENCODING_APPLE_ROMAN }, /* MAC */
+    { "MSZ_7795.3",                 RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-86 */
+    { "NATS-DANO",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-9-1 */
+    { "NATS-DANO-ADD",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-9-2 */
+    { "NATS-SEFI",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-8-1 */
+    { "NATS-SEFI-ADD",              RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-8-2 */
+    { "NC_NC00-10",                 RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-151 */
+    { "NEXTSTEP",                   RTL_TEXTENCODING_DONTKNOW },    /* NEXT */
+    { "NF_Z_62-010",                RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-69 */
+    { "NF_Z_62-010_(1973)",         RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-25 */
+    { "NS_4551-1",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-60 */
+    { "NS_4551-2",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-61 */
+    { "PT",                         RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-16 */
+    { "PT2",                        RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-84 */
+    { "SAMI",                       RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-158 */
+    { "SEN_850200_B",               RTL_TEXTENCODING_DONTKNOW },    /* ISO646-[FI|SE] */
+    { "SEN_850200_C",               RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-11 */
+    { "T.101-G2",                   RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-128 */
+    { "T.61-7BIT",                  RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-102 */
+    { "T.61-8BIT",                  RTL_TEXTENCODING_DONTKNOW },    /* T.61 ISO-IR-103 */
+    { "TIS-620",                    RTL_TEXTENCODING_MS_874 },     /* locale: th_TH */
+    { "UTF-8",                      RTL_TEXTENCODING_UTF8 },        /* ISO-10646/UTF-8 */
+    { "VIDEOTEX-SUPPL",             RTL_TEXTENCODING_DONTKNOW },    /* ISO-IR-70 */
+    { "WIN-SAMI-2",                 RTL_TEXTENCODING_DONTKNOW }     /* WS2 */
+};
+
+#elif defined(FREEBSD) || defined(DRAGONFLY)
+
+static const Pair nl_language_list[] = {
+    { "ASCII",         RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "BIG5",          RTL_TEXTENCODING_BIG5           }, /* China - Traditional Chinese */
+    { "CP1251",        RTL_TEXTENCODING_MS_1251        }, /* MS-CYRL */
+    { "CP866",         RTL_TEXTENCODING_IBM_866        }, /* CP866 866 */
+    { "EUCCN",         RTL_TEXTENCODING_EUC_CN         }, /* China - Simplified Chinese */
+    { "EUCJP",         RTL_TEXTENCODING_EUC_JP         }, /* Japan */
+    { "EUCKR",         RTL_TEXTENCODING_EUC_KR         }, /* Korea */
+    { "ISO8859-1",     RTL_TEXTENCODING_ISO_8859_1     }, /* Western */
+    { "ISO8859-15",    RTL_TEXTENCODING_ISO_8859_15    }, /* Western Updated (w/Euro sign) */
+    { "ISO8859-2",     RTL_TEXTENCODING_ISO_8859_2     }, /* Central European */
+    { "ISO8859-4",     RTL_TEXTENCODING_ISO_8859_4     }, /* LATIN4 L4 */
+    { "ISO8859-5",     RTL_TEXTENCODING_ISO_8859_5     }, /* Cyrillic */
+    { "ISO8859-7",     RTL_TEXTENCODING_ISO_8859_7     }, /* Greek */
+    { "ISO8859-9",     RTL_TEXTENCODING_ISO_8859_9     }, /* Turkish */
+    { "KOI8-R",        RTL_TEXTENCODING_KOI8_R         }, /* KOI8-R */
+    { "KOI8-U",        RTL_TEXTENCODING_KOI8_U         }, /* KOI8-U */
+    { "SJIS",          RTL_TEXTENCODING_SHIFT_JIS      }, /* Japan */
+    { "US-ASCII",      RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "UTF-8",         RTL_TEXTENCODING_UTF8           }  /* ISO-10646/UTF-8 */
+};
+
+#elif defined(NETBSD)
+
+static const Pair nl_language_list[] = {
+    { "ASCII",         RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "BIG5",          RTL_TEXTENCODING_BIG5           }, /* China - Traditional Chinese */
+    { "Big5",          RTL_TEXTENCODING_BIG5           }, /* China - Traditional Chinese */
+    { "Big5-HKSCS",    RTL_TEXTENCODING_BIG5_HKSCS     }, /* locale: zh_CN.BIG5HK */
+    { "Big5HKSCS",     RTL_TEXTENCODING_BIG5_HKSCS     }, /* deprecated */
+    { "CP1251",        RTL_TEXTENCODING_MS_1251        }, /* MS-CYRL */
+    { "CP866",         RTL_TEXTENCODING_IBM_866        }, /* CP866 866 */
+    { "CTEXT",         RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "eucCN",         RTL_TEXTENCODING_EUC_CN         }, /* China - Simplified Chinese */
+    { "eucJP",         RTL_TEXTENCODING_EUC_JP         }, /* Japan */
+    { "eucKR",         RTL_TEXTENCODING_EUC_KR         }, /* Korea */
+    { "eucTW",         RTL_TEXTENCODING_EUC_TW         }, /* China - Traditional Chinese */
+    { "GB18030",       RTL_TEXTENCODING_GB_18030       }, /* locale: zh_CN.gb18030 */
+    { "GB2312",        RTL_TEXTENCODING_GB_2312        }, /* locale: zh_CN */
+    { "ISO-2022-JP",   RTL_TEXTENCODING_DONTKNOW       }, /* */
+    { "ISO-2022-JP-2", RTL_TEXTENCODING_DONTKNOW       }, /* */
+    { "ISO8859-1",     RTL_TEXTENCODING_ISO_8859_1     }, /* Western */
+    { "ISO8859-13",    RTL_TEXTENCODING_ISO_8859_13    }, /* ISO-IR-179 LATIN7 */
+    { "ISO8859-15",    RTL_TEXTENCODING_ISO_8859_15    }, /* Western Updated (w/Euro sign) */
+    { "ISO8859-2",     RTL_TEXTENCODING_ISO_8859_2     }, /* Central European */
+    { "ISO8859-4",     RTL_TEXTENCODING_ISO_8859_4     }, /* LATIN4 L4 */
+    { "ISO8859-5",     RTL_TEXTENCODING_ISO_8859_5     }, /* Cyrillic */
+    { "ISO8859-7",     RTL_TEXTENCODING_ISO_8859_7     }, /* Greek */
+    { "ISO8859-9",     RTL_TEXTENCODING_ISO_8859_9     }, /* Turkish */
+    { "KOI8-R",        RTL_TEXTENCODING_KOI8_R         }, /* KOI8-R */
+    { "KOI8-U",        RTL_TEXTENCODING_KOI8_U         }, /* KOI8-U */
+    { "PT154",         RTL_TEXTENCODING_PT154          }, /* */
+    { "SJIS",          RTL_TEXTENCODING_SHIFT_JIS      }, /* Japan */
+    { "US-ASCII",      RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "UTF-8",         RTL_TEXTENCODING_UTF8           }  /* ISO-10646/UTF-8 */
+};
+
+#elif defined(OPENBSD)
+
+static const Pair nl_language_list[] = {
+    { "ASCII",         RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "BIG5",          RTL_TEXTENCODING_BIG5           }, /* China - Traditional Chinese */
+    { "CP1251",        RTL_TEXTENCODING_MS_1251        }, /* MS-CYRL */
+    { "CP866",         RTL_TEXTENCODING_IBM_866        }, /* CP866 866 */
+    { "EUCCN",         RTL_TEXTENCODING_EUC_CN         }, /* China - Simplified Chinese */
+    { "EUCJP",         RTL_TEXTENCODING_EUC_JP         }, /* Japan */
+    { "EUCKR",         RTL_TEXTENCODING_EUC_KR         }, /* Korea */
+    { "ISO8859-1",     RTL_TEXTENCODING_ISO_8859_1     }, /* Western */
+    { "ISO8859-15",    RTL_TEXTENCODING_ISO_8859_15    }, /* Western Updated (w/Euro sign) */
+    { "ISO8859-2",     RTL_TEXTENCODING_ISO_8859_2     }, /* Central European */
+    { "ISO8859-4",     RTL_TEXTENCODING_ISO_8859_4     }, /* LATIN4 L4 */
+    { "ISO8859-5",     RTL_TEXTENCODING_ISO_8859_5     }, /* Cyrillic */
+    { "ISO8859-7",     RTL_TEXTENCODING_ISO_8859_7     }, /* Greek */
+    { "ISO8859-9",     RTL_TEXTENCODING_ISO_8859_9     }, /* Turkish */
+    { "KOI8-R",        RTL_TEXTENCODING_KOI8_R         }, /* KOI8-R */
+    { "KOI8-U",        RTL_TEXTENCODING_KOI8_U         }, /* KOI8-U */
+    { "SJIS",          RTL_TEXTENCODING_SHIFT_JIS      }, /* Japan */
+    { "US-ASCII",      RTL_TEXTENCODING_ASCII_US       }, /* US-ASCII */
+    { "UTF-8",         RTL_TEXTENCODING_UTF8           }  /* ISO-10646/UTF-8 */
+};
+
+#else
+#error Unhandled individual LO_COMMON_NLS_ARCHS
+#endif // individual common NLS archs
+
+/*****************************************************************************
+ return the text encoding corresponding to the given locale
+ *****************************************************************************/
+
+rtl_TextEncoding osl_getTextEncodingFromLocale( rtl_Locale * pLocale )
+{
+    const Pair *language=nullptr;
+
+    char  locale_buf[64] = "";
+    char  codeset_buf[64];
+
+    char *codeset      = nullptr;
+
+    /* default to process locale if pLocale == NULL */
+    if( pLocale == nullptr )
+        osl_getProcessLocale( &pLocale );
+
+    /* convert rtl_Locale to locale string */
+    compose_locale( pLocale, locale_buf, 64 );
+
+    locale_t ctype_locale = newlocale(
+        LC_CTYPE_MASK, locale_buf, static_cast<locale_t>(0));
+    if (ctype_locale == static_cast<locale_t>(0))
+    {
+        return RTL_TEXTENCODING_DONTKNOW;
+    }
+
+    /* get the charset as indicated by the LC_CTYPE locale */
+#if defined(NETBSD) && !defined(CODESET)
+    codeset = NULL;
+#else
+    codeset = nl_langinfo_l(CODESET, ctype_locale);
+        // per SUSv4, the return value of nl_langinfo_l can be invalidated by a
+        // subsequent call to nl_langinfo (not nl_langinfo_l) in any thread, but
+        // we cannot guard against that (at least, no code in LO itself should
+        // call nl_langinfo)
+#endif
+
+    if ( codeset != nullptr )
+    {
+        /* get codeset into mt save memory */
+        strncpy( codeset_buf, codeset, sizeof(codeset_buf) );
+        codeset_buf[sizeof(codeset_buf) - 1] = 0;
+        codeset = codeset_buf;
+    }
+
+    freelocale(ctype_locale);
+
+    /* search the codeset in our language list */
+    if ( codeset != nullptr )
+    {
+        language = pair_search (codeset, nl_language_list, SAL_N_ELEMENTS( nl_language_list ) );
+    }
+
+    OSL_ASSERT( language && ( RTL_TEXTENCODING_DONTKNOW != language->value ) );
+
+    /* a matching item in our list provides a mapping from codeset to
+     * rtl-codeset */
+    if ( language != nullptr )
+        return language->value;
+
+    return RTL_TEXTENCODING_DONTKNOW;
+}
+
+/*****************************************************************************
+ return the current process locale
+ *****************************************************************************/
+
+void imp_getProcessLocale( rtl_Locale ** ppLocale )
+{
+    char const * locale = getenv("LC_ALL");
+    if (locale == nullptr || *locale == '\0') {
+        locale = getenv("LC_CTYPE");
+        if (locale == nullptr || *locale == '\0') {
+            locale = getenv("LANG");
+            if (locale == nullptr || *locale == '\0') {
+                locale = "C";
+            }
+        }
+    }
+    // coverity[overrun-buffer-val : FALSE] - coverity gets this very wrong
+    *ppLocale = parse_locale(locale);
+}
+
+#else // !LO_COMMON_NLS_ARCHS
+
+/*
+ * This implementation of osl_getTextEncodingFromLocale maps
+ * from the ISO language codes.
+ */
+
+const Pair full_locale_list[] = {
+    { "ja_JP.eucJP",  RTL_TEXTENCODING_EUC_JP      },
+    { "ja_JP.EUC",    RTL_TEXTENCODING_EUC_JP      },
+    { "ko_KR.EUC",    RTL_TEXTENCODING_EUC_KR      },
+    { "zh_CN.EUC",    RTL_TEXTENCODING_EUC_CN      },
+    { "zh_TW.EUC",    RTL_TEXTENCODING_EUC_TW      }
+};
+
+const Pair locale_extension_list[] = {
+    { "big5",         RTL_TEXTENCODING_BIG5        },
+    { "big5hk",       RTL_TEXTENCODING_BIG5_HKSCS  },
+    { "gb18030",      RTL_TEXTENCODING_GB_18030    },
+    { "euc",          RTL_TEXTENCODING_EUC_JP      },
+    { "iso8859-1",    RTL_TEXTENCODING_ISO_8859_1  },
+    { "iso8859-10",   RTL_TEXTENCODING_ISO_8859_10 },
+    { "iso8859-13",   RTL_TEXTENCODING_ISO_8859_13 },
+    { "iso8859-14",   RTL_TEXTENCODING_ISO_8859_14 },
+    { "iso8859-15",   RTL_TEXTENCODING_ISO_8859_15 },
+    { "iso8859-2",    RTL_TEXTENCODING_ISO_8859_2  },
+    { "iso8859-3",    RTL_TEXTENCODING_ISO_8859_3  },
+    { "iso8859-4",    RTL_TEXTENCODING_ISO_8859_4  },
+    { "iso8859-5",    RTL_TEXTENCODING_ISO_8859_5  },
+    { "iso8859-6",    RTL_TEXTENCODING_ISO_8859_6  },
+    { "iso8859-7",    RTL_TEXTENCODING_ISO_8859_7  },
+    { "iso8859-8",    RTL_TEXTENCODING_ISO_8859_8  },
+    { "iso8859-9",    RTL_TEXTENCODING_ISO_8859_9  },
+    { "koi8-r",       RTL_TEXTENCODING_KOI8_R      },
+    { "koi8-u",       RTL_TEXTENCODING_KOI8_U      },
+    { "pck",          RTL_TEXTENCODING_MS_932      },
+#if (0)
+    { "sun_eu_greek", RTL_TEXTENCODING_DONTKNOW    },
+#endif
+    { "utf-16",       RTL_TEXTENCODING_UNICODE     },
+    { "utf-7",        RTL_TEXTENCODING_UTF7        },
+    { "utf-8",        RTL_TEXTENCODING_UTF8        }
+};
+
+const Pair iso_language_list[] = {
+    { "af",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "ar",  RTL_TEXTENCODING_ISO_8859_6 },
+    { "az",  RTL_TEXTENCODING_ISO_8859_9 },
+    { "be",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "bg",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "ca",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "cs",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "da",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "de",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "el",  RTL_TEXTENCODING_ISO_8859_7 },
+    { "en",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "es",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "et",  RTL_TEXTENCODING_ISO_8859_4 },
+    { "eu",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "fa",  RTL_TEXTENCODING_ISO_8859_6 },
+    { "fi",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "fo",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "fr",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "gr",  RTL_TEXTENCODING_ISO_8859_7 },
+    { "he",  RTL_TEXTENCODING_ISO_8859_8 },
+    { "hi",  RTL_TEXTENCODING_DONTKNOW },
+    { "hr",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "hu",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "hy",  RTL_TEXTENCODING_DONTKNOW },
+    { "id",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "is",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "it",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "iw",  RTL_TEXTENCODING_ISO_8859_8 },
+    { "ja",  RTL_TEXTENCODING_EUC_JP },
+    { "ka",  RTL_TEXTENCODING_DONTKNOW },
+    { "kk",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "ko",  RTL_TEXTENCODING_EUC_KR },
+    { "lt",  RTL_TEXTENCODING_ISO_8859_4 },
+    { "lv",  RTL_TEXTENCODING_ISO_8859_4 },
+    { "mk",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "mr",  RTL_TEXTENCODING_DONTKNOW },
+    { "ms",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "nl",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "no",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "pl",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "pt",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "ro",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "ru",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "sa",  RTL_TEXTENCODING_DONTKNOW },
+    { "sk",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "sl",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "sq",  RTL_TEXTENCODING_ISO_8859_2 },
+    { "sv",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "sw",  RTL_TEXTENCODING_ISO_8859_1 },
+    { "ta",  RTL_TEXTENCODING_DONTKNOW },
+    { "th",  RTL_TEXTENCODING_DONTKNOW },
+    { "tr",  RTL_TEXTENCODING_ISO_8859_9 },
+    { "tt",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "uk",  RTL_TEXTENCODING_ISO_8859_5 },
+    { "ur",  RTL_TEXTENCODING_ISO_8859_6 },
+    { "uz",  RTL_TEXTENCODING_ISO_8859_9 },
+    { "vi",  RTL_TEXTENCODING_DONTKNOW },
+    { "zh",  RTL_TEXTENCODING_BIG5 }
+};
+
+/*****************************************************************************
+ return the text encoding corresponding to the given locale
+ *****************************************************************************/
+
+rtl_TextEncoding osl_getTextEncodingFromLocale( rtl_Locale * pLocale )
+{
+    const Pair *language = nullptr;
+    char locale_buf[64] = "";
+
+    /* default to process locale if pLocale == NULL */
+    if( nullptr == pLocale )
+        osl_getProcessLocale( &pLocale );
+
+    /* convert rtl_Locale to locale string */
+    if( compose_locale( pLocale, locale_buf, 64 ) )
+    {
+        /* check special handling list (EUC) first */
+        language = pair_search( locale_buf, full_locale_list, SAL_N_ELEMENTS( full_locale_list ) );
+
+        if( nullptr == language )
+        {
+            /*
+             *  check if there is a charset qualifier at the end of the given locale string
+             *  e.g. de.ISO8859-15 or de.ISO8859-15@euro which strongly indicates what
+             *  charset to use
+             */
+            char* cp = strrchr( locale_buf, '.' );
+
+            if( nullptr != cp )
+            {
+                language = pair_search( cp + 1, locale_extension_list, SAL_N_ELEMENTS( locale_extension_list ) );
+            }
+        }
+
+        /* use iso language code to determine the charset */
+        if( nullptr == language )
+        {
+            /* iso lang codes have 2 characters */
+            locale_buf[2] = '\0';
+
+            language = pair_search( locale_buf, iso_language_list, SAL_N_ELEMENTS( iso_language_list ) );
+        }
+    }
+
+    /* a matching item in our list provides a mapping from codeset to
+     * rtl-codeset */
+    if ( language != nullptr )
+        return language->value;
+
+    return RTL_TEXTENCODING_DONTKNOW;
+}
+
+#if defined(MACOSX) || defined(IOS)
+
+/*****************************************************************************
+ return the current process locale
+ *****************************************************************************/
+
+void imp_getProcessLocale( rtl_Locale ** ppLocale )
+{
+    OUString loc16(macosx_getLocale());
+    OString locale;
+    if (!loc16.convertToString(
+            &locale, RTL_TEXTENCODING_UTF8,
+            (RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR
+             | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR)))
+    {
+        SAL_INFO("sal.osl", "Cannot convert \"" << loc16 << "\" to UTF-8");
+    }
+
+    /* handle the case where OS specific method of finding locale fails */
+    if ( locale.isEmpty() )
+    {
+        /* simulate behavior of setlocale */
+        locale = getenv( "LC_ALL" );
+
+        if( locale.isEmpty() )
+            locale = getenv( "LC_CTYPE" );
+
+        if( locale.isEmpty() )
+            locale = getenv( "LANG" );
+
+        if( locale.isEmpty() )
+            locale = "C";
+    }
+
+    /* return the locale */
+    *ppLocale = parse_locale( locale.getStr() );
+}
+
+#else // !MACOSX && !IOS
+
+/*****************************************************************************
+ return the current process locale
+ *****************************************************************************/
+
+void imp_getProcessLocale( rtl_Locale ** ppLocale )
+{
+#ifdef ANDROID
+    /* No locale environment variables on Android, so why even bother
+     * with getenv().
+     */
+    const char* locale = "en-US.UTF-8";
+#else
+    /* simulate behavior off setlocale */
+    const char* locale = getenv("LC_ALL");
+
+    if( NULL == locale )
+        locale = getenv( "LC_CTYPE" );
+
+    if( NULL == locale )
+        locale = getenv( "LANG" );
+
+    if( NULL == locale )
+        locale = "C";
+
+#endif
+    *ppLocale = parse_locale( locale );
+}
+
+#endif // !MACOSX && !IOS
+#endif // !LO_COMMON_NLS_ARCHS
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/nlsupport.hxx b/sal/osl/unx/nlsupport.hxx
new file mode 100644
index 000000000..ba5acf23c
--- /dev/null
+++ b/sal/osl/unx/nlsupport.hxx
@@ -0,0 +1,40 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_NLSUPPORT_HXX
+#define INCLUDED_SAL_OSL_UNX_NLSUPPORT_HXX
+
+#include <sal/config.h>
+
+#include <rtl/locale.h>
+
+namespace rtl
+{
+class OUString;
+}
+
+void imp_getProcessLocale(rtl_Locale**);
+
+#if defined IOS || defined MACOSX
+OUString macosx_getLocale();
+#endif
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/osxlocale.cxx b/sal/osl/unx/osxlocale.cxx
new file mode 100644
index 000000000..f82ea1436
--- /dev/null
+++ b/sal/osl/unx/osxlocale.cxx
@@ -0,0 +1,104 @@
+/* -*- 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 <sal/types.h>
+#include <assert.h>
+
+#include <premac.h>
+#ifndef IOS
+#include <CoreServices/CoreServices.h>
+#endif
+#include <CoreFoundation/CoreFoundation.h>
+#include <postmac.h>
+
+#include <rtl/ustrbuf.hxx>
+
+#include "nlsupport.hxx"
+
+namespace
+{
+    template <typename T>
+    class CFGuard
+    {
+    public:
+        explicit CFGuard(T& rT) : rT_(rT) {}
+        ~CFGuard() { if (rT_) CFRelease(rT_); }
+    private:
+        T& rT_;
+    };
+
+    typedef CFGuard<CFArrayRef> CFArrayGuard;
+    typedef CFGuard<CFStringRef> CFStringGuard;
+    typedef CFGuard<CFPropertyListRef> CFPropertyListGuard;
+
+    /** Get the current process locale from system
+    */
+    CFStringRef getProcessLocale()
+    {
+        CFPropertyListRef pref = CFPreferencesCopyAppValue(CFSTR("AppleLanguages"), kCFPreferencesCurrentApplication);
+        CFPropertyListGuard proplGuard(pref);
+
+        if (pref == nullptr) // return fallback value 'en_US'
+             return CFStringCreateWithCString(kCFAllocatorDefault, "en_US", kCFStringEncodingASCII);
+
+        CFStringRef sref = (CFGetTypeID(pref) == CFArrayGetTypeID()) ? static_cast<CFStringRef>(CFArrayGetValueAtIndex(static_cast<CFArrayRef>(pref), 0)) : static_cast<CFStringRef>(pref);
+
+        return CFLocaleCreateCanonicalLocaleIdentifierFromString(kCFAllocatorDefault, sref);
+    }
+
+    void append(OUStringBuffer & buffer, CFStringRef string) {
+        CFIndex n = CFStringGetLength(string);
+        CFStringGetCharacters(
+            string, CFRangeMake(0, n),
+            reinterpret_cast<UniChar *>(buffer.appendUninitialized(n)));
+    }
+}
+
+/** Grab current locale from system.
+*/
+OUString macosx_getLocale()
+{
+    CFStringRef sref = getProcessLocale();
+    CFStringGuard sGuard(sref);
+
+    assert(sref != nullptr && "osxlocale.cxx: getProcessLocale must return a non-NULL value");
+
+    // split the string into substrings; the first two (if there are two) substrings
+    // are language and country
+    CFArrayRef subs = CFStringCreateArrayBySeparatingStrings(nullptr, sref, CFSTR("-"));
+    CFArrayGuard arrGuard(subs);
+
+    OUStringBuffer buf;
+    append(buf, static_cast<CFStringRef>(CFArrayGetValueAtIndex(subs, 0)));
+
+    // country also available? Assumption: if the array contains more than one
+    // value the second value is always the country!
+    if (CFArrayGetCount(subs) > 1)
+    {
+        buf.append("_");
+        append(buf, static_cast<CFStringRef>(CFArrayGetValueAtIndex(subs, 1)));
+    }
+    // Append 'UTF-8' to the locale because the macOS file
+    // system interface is UTF-8 based and sal tries to determine
+    // the file system locale from the locale information
+    buf.append(".UTF-8");
+    return buf.makeStringAndClear();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/pipe.cxx b/sal/osl/unx/pipe.cxx
new file mode 100644
index 000000000..45d31e008
--- /dev/null
+++ b/sal/osl/unx/pipe.cxx
@@ -0,0 +1,523 @@
+/* -*- 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 "system.hxx"
+
+#include <o3tl/safeint.hxx>
+#include <osl/pipe.h>
+#include <osl/diagnose.h>
+#include <osl/thread.h>
+#include <osl/interlck.h>
+#include <rtl/string.h>
+#include <rtl/ustring.h>
+#include <rtl/bootstrap.hxx>
+#include <sal/log.hxx>
+
+#include "sockimpl.hxx"
+#include "secimpl.hxx"
+#include "unixerrnostring.hxx"
+
+#include <cassert>
+#include <cstring>
+
+constexpr OStringLiteral PIPEDEFAULTPATH = "/tmp";
+constexpr OStringLiteral PIPEALTERNATEPATH = "/var/tmp";
+
+static oslPipe osl_psz_createPipe(const char *pszPipeName, oslPipeOptions Options, oslSecurity Security);
+
+struct
+{
+    int            errcode;
+    oslPipeError   error;
+} const PipeError[]= {
+    { 0,               osl_Pipe_E_None              },  /* no error */
+    { EPROTOTYPE,      osl_Pipe_E_NoProtocol        },  /* Protocol wrong type for socket */
+    { ENOPROTOOPT,     osl_Pipe_E_NoProtocol        },  /* Protocol not available */
+    { EPROTONOSUPPORT, osl_Pipe_E_NoProtocol        },  /* Protocol not supported */
+#ifdef ESOCKTNOSUPPORT
+    { ESOCKTNOSUPPORT, osl_Pipe_E_NoProtocol        },  /* Socket type not supported */
+#endif
+    { EPFNOSUPPORT,    osl_Pipe_E_NoProtocol        },  /* Protocol family not supported */
+    { EAFNOSUPPORT,    osl_Pipe_E_NoProtocol        },  /* Address family not supported by */
+                                                        /* protocol family */
+    { ENETRESET,       osl_Pipe_E_NetworkReset      },  /* Network dropped connection because */
+                                                         /* of reset */
+    { ECONNABORTED,    osl_Pipe_E_ConnectionAbort   },  /* Software caused connection abort */
+    { ECONNRESET,      osl_Pipe_E_ConnectionReset   },  /* Connection reset by peer */
+    { ENOBUFS,         osl_Pipe_E_NoBufferSpace     },  /* No buffer space available */
+    { ETIMEDOUT,       osl_Pipe_E_TimedOut          },  /* Connection timed out */
+    { ECONNREFUSED,    osl_Pipe_E_ConnectionRefused },  /* Connection refused */
+    { -1,              osl_Pipe_E_invalidError      }
+};
+
+static oslPipeError osl_PipeErrorFromNative(int nativeType)
+{
+    int i = 0;
+
+    while ((PipeError[i].error != osl_Pipe_E_invalidError) &&
+           (PipeError[i].errcode != nativeType))
+    {
+        i++;
+    }
+
+    return PipeError[i].error;
+}
+
+static oslPipe createPipeImpl()
+{
+    oslPipe pPipeImpl;
+
+    pPipeImpl = static_cast< oslPipe >(calloc(1, sizeof(struct oslPipeImpl)));
+    if (!pPipeImpl)
+        return nullptr;
+
+    pPipeImpl->m_nRefCount = 1;
+    pPipeImpl->m_bClosed = false;
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pPipeImpl->m_bIsInShutdown = false;
+    pPipeImpl->m_bIsAccepting = false;
+#endif
+
+    return pPipeImpl;
+}
+
+static void destroyPipeImpl(oslPipe pImpl)
+{
+    if (pImpl)
+        free(pImpl);
+}
+
+oslPipe SAL_CALL osl_createPipe(rtl_uString *ustrPipeName, oslPipeOptions Options, oslSecurity Security)
+{
+    oslPipe pPipe = nullptr;
+    rtl_String* strPipeName = nullptr;
+
+    if (ustrPipeName)
+    {
+        rtl_uString2String(&strPipeName,
+                           rtl_uString_getStr(ustrPipeName),
+                           rtl_uString_getLength(ustrPipeName),
+                           osl_getThreadTextEncoding(),
+                           OUSTRING_TO_OSTRING_CVTFLAGS);
+        char* pszPipeName = rtl_string_getStr(strPipeName);
+        pPipe = osl_psz_createPipe(pszPipeName, Options, Security);
+
+        if (strPipeName)
+            rtl_string_release(strPipeName);
+    }
+
+    return pPipe;
+
+}
+
+static OString
+getBootstrapSocketPath()
+{
+    OUString pValue;
+
+    if (rtl::Bootstrap::get("OSL_SOCKET_PATH", pValue))
+    {
+        return OUStringToOString(pValue, RTL_TEXTENCODING_UTF8);
+    }
+    return "";
+}
+
+static oslPipe osl_psz_createPipe(const char *pszPipeName, oslPipeOptions Options,
+                                    oslSecurity Security)
+{
+    int Flags;
+    size_t len;
+    struct sockaddr_un addr;
+
+    OString name;
+    oslPipe pPipe;
+
+    if (access(PIPEDEFAULTPATH.getStr(), W_OK) == 0)
+        name = PIPEDEFAULTPATH;
+    else if (access(PIPEALTERNATEPATH.getStr(), W_OK) == 0)
+        name = PIPEALTERNATEPATH;
+    else {
+        name = getBootstrapSocketPath ();
+    }
+
+    name += "/";
+
+    if (Security)
+    {
+        char Ident[256];
+
+        Ident[0] = '\0';
+
+        OSL_VERIFY(osl_psz_getUserIdent(Security, Ident, sizeof(Ident)));
+
+        name += OString::Concat("OSL_PIPE_") + Ident + "_" + pszPipeName;
+    }
+    else
+    {
+        name += OString::Concat("OSL_PIPE_") + pszPipeName;
+    }
+
+    if (o3tl::make_unsigned(name.getLength()) >= sizeof addr.sun_path)
+    {
+        SAL_WARN("sal.osl.pipe", "osl_createPipe: pipe name too long");
+        return nullptr;
+    }
+
+    /* alloc memory */
+    pPipe = createPipeImpl();
+
+    if (!pPipe)
+        return nullptr;
+
+    /* create socket */
+    pPipe->m_Socket = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (pPipe->m_Socket < 0)
+    {
+        SAL_WARN("sal.osl.pipe", "socket() failed: " << UnixErrnoString(errno));
+        destroyPipeImpl(pPipe);
+        return nullptr;
+    }
+
+    /* set close-on-exec flag */
+    if ((Flags = fcntl(pPipe->m_Socket, F_GETFD, 0)) != -1)
+    {
+        Flags |= FD_CLOEXEC;
+        if (fcntl(pPipe->m_Socket, F_SETFD, Flags) == -1)
+        {
+            SAL_WARN("sal.osl.pipe", "fcntl() failed: " << UnixErrnoString(errno));
+        }
+    }
+
+    memset(&addr, 0, sizeof(addr));
+
+    SAL_INFO("sal.osl.pipe", "new pipe on fd " << pPipe->m_Socket << " '" << name << "'");
+
+    addr.sun_family = AF_UNIX;
+    // coverity[fixed_size_dest : FALSE] - safe, see check above
+    strcpy(addr.sun_path, name.getStr());
+#if defined(FREEBSD)
+    len = SUN_LEN(&addr);
+#else
+    len = sizeof(addr);
+#endif
+
+    if (Options & osl_Pipe_CREATE)
+    {
+        struct stat status;
+
+        /* check if there exists an orphan filesystem entry */
+        if ((stat(name.getStr(), &status) == 0) &&
+            (S_ISSOCK(status.st_mode) || S_ISFIFO(status.st_mode)))
+        {
+            if (connect(pPipe->m_Socket, reinterpret_cast< sockaddr* >(&addr), len) >= 0)
+            {
+                close (pPipe->m_Socket);
+                destroyPipeImpl(pPipe);
+                return nullptr;
+            }
+
+            unlink(name.getStr());
+        }
+
+        /* ok, fs clean */
+        if (bind(pPipe->m_Socket, reinterpret_cast< sockaddr* >(&addr), len) < 0)
+        {
+            SAL_WARN("sal.osl.pipe", "bind() failed: " << UnixErrnoString(errno));
+            close(pPipe->m_Socket);
+            destroyPipeImpl(pPipe);
+            return nullptr;
+        }
+
+        /*  Only give access to all if no security handle was specified, otherwise security
+            depends on umask */
+
+        if (!Security)
+            (void)chmod(name.getStr(),S_IRWXU | S_IRWXG |S_IRWXO);
+
+        strcpy(pPipe->m_Name, name.getStr()); // safe, see check above
+
+        if (listen(pPipe->m_Socket, 5) < 0)
+        {
+            SAL_WARN("sal.osl.pipe", "listen() failed: " << UnixErrnoString(errno));
+            // cid#1255391 warns about unlink(name) after stat(name, &status)
+            // above, but the intervening call to bind makes those two clearly
+            // unrelated, as it would fail if name existed at that point in
+            // time:
+            // coverity[toctou] - this is bogus
+            unlink(name.getStr());   /* remove filesystem entry */
+            close(pPipe->m_Socket);
+            destroyPipeImpl(pPipe);
+            return nullptr;
+        }
+
+        return pPipe;
+    }
+
+    /* osl_pipe_OPEN */
+    if (access(name.getStr(), F_OK) != -1)
+    {
+        if (connect(pPipe->m_Socket, reinterpret_cast< sockaddr* >(&addr), len) >= 0)
+            return pPipe;
+
+        SAL_WARN("sal.osl.pipe", "connect() failed: " << UnixErrnoString(errno));
+    }
+
+    close (pPipe->m_Socket);
+    destroyPipeImpl(pPipe);
+    return nullptr;
+}
+
+void SAL_CALL osl_acquirePipe(oslPipe pPipe)
+{
+    osl_atomic_increment(&(pPipe->m_nRefCount));
+}
+
+void SAL_CALL osl_releasePipe(oslPipe pPipe)
+{
+    if (!pPipe)
+        return;
+
+    if (osl_atomic_decrement(&(pPipe->m_nRefCount)) == 0)
+    {
+        if (!pPipe->m_bClosed)
+            osl_closePipe(pPipe);
+
+        destroyPipeImpl(pPipe);
+    }
+}
+
+void SAL_CALL osl_closePipe(oslPipe pPipe)
+{
+    int nRet;
+    int ConnFD;
+
+    if (!pPipe)
+        return;
+
+    if (pPipe->m_bClosed)
+        return;
+
+    ConnFD = pPipe->m_Socket;
+
+    /* Thread does not return from accept on linux, so
+       connect to the accepting pipe
+     */
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    struct sockaddr_un addr;
+
+    if (pPipe->m_bIsAccepting)
+    {
+        pPipe->m_bIsInShutdown = true;
+        pPipe->m_Socket = -1;
+
+        int fd = socket(AF_UNIX, SOCK_STREAM, 0);
+        if (fd < 0)
+        {
+            SAL_WARN("sal.osl.pipe", "socket() failed: " << UnixErrnoString(errno));
+            return;
+        }
+
+        memset(&addr, 0, sizeof(addr));
+
+        SAL_INFO("sal.osl.pipe", "osl_destroyPipe : Pipe Name '" << pPipe->m_Name << "'");
+
+        addr.sun_family = AF_UNIX;
+        strcpy(addr.sun_path, pPipe->m_Name); // safe, as both are same size
+
+        nRet = connect(fd, reinterpret_cast< sockaddr* >(&addr), sizeof(addr));
+        if (nRet < 0)
+            SAL_WARN("sal.osl.pipe", "connect() failed: " << UnixErrnoString(errno));
+
+        close(fd);
+    }
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+
+    nRet = shutdown(ConnFD, 2);
+    if (nRet < 0)
+        SAL_WARN("sal.osl.pipe", "shutdown() failed: " << UnixErrnoString(errno));
+
+    nRet = close(ConnFD);
+    if (nRet < 0)
+        SAL_WARN("sal.osl.pipe", "close() failed: " << UnixErrnoString(errno));
+
+    /* remove filesystem entry */
+    if (pPipe->m_Name[0] != '\0')
+        unlink(pPipe->m_Name);
+
+    pPipe->m_bClosed = true;
+}
+
+oslPipe SAL_CALL osl_acceptPipe(oslPipe pPipe)
+{
+    int s;
+    oslPipe pAcceptedPipe;
+
+    SAL_WARN_IF(!pPipe, "sal.osl.pipe", "invalid pipe");
+    if (!pPipe)
+        return nullptr;
+
+    assert(pPipe->m_Name[0] != '\0');  // you cannot have an empty pipe name
+
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pPipe->m_bIsAccepting = true;
+#endif
+
+    s = accept(pPipe->m_Socket, nullptr, nullptr);
+
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pPipe->m_bIsAccepting = false;
+#endif
+
+    if (s < 0)
+    {
+        SAL_WARN("sal.osl.pipe", "accept() failed: " << UnixErrnoString(errno));
+        return nullptr;
+    }
+
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    if (pPipe->m_bIsInShutdown)
+    {
+        close(s);
+        return nullptr;
+    }
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+
+    /* alloc memory */
+    pAcceptedPipe = createPipeImpl();
+
+    assert(pAcceptedPipe);  // should never be the case that an oslPipe cannot be initialized
+    if (!pAcceptedPipe)
+    {
+        close(s);
+        return nullptr;
+    }
+
+    /* set close-on-exec flag */
+    int flags;
+    if ((flags = fcntl(s, F_GETFD, 0)) >= 0)
+    {
+        flags |= FD_CLOEXEC;
+        if (fcntl(s, F_SETFD, flags) < 0)
+            SAL_WARN("sal.osl.pipe", "fcntl() failed: " <<  UnixErrnoString(errno));
+    }
+
+    pAcceptedPipe->m_Socket = s;
+
+    return pAcceptedPipe;
+}
+
+sal_Int32 SAL_CALL osl_receivePipe(oslPipe pPipe,
+                        void* pBuffer,
+                        sal_Int32 BytesToRead)
+{
+    int nRet = 0;
+
+    SAL_WARN_IF(!pPipe, "sal.osl.pipe", "osl_receivePipe: invalid pipe");
+    if (!pPipe)
+    {
+        SAL_WARN("sal.osl.pipe", "osl_receivePipe: Invalid socket");
+        errno=EINVAL;
+        return -1;
+    }
+
+    nRet = recv(pPipe->m_Socket, pBuffer, BytesToRead, 0);
+
+    if (nRet < 0)
+        SAL_WARN("sal.osl.pipe", "recv() failed: " << UnixErrnoString(errno));
+
+    return nRet;
+}
+
+sal_Int32 SAL_CALL osl_sendPipe(oslPipe pPipe,
+                       const void* pBuffer,
+                       sal_Int32 BytesToSend)
+{
+    int nRet=0;
+
+    SAL_WARN_IF(!pPipe, "sal.osl.pipe", "osl_sendPipe: invalid pipe");
+    if (!pPipe)
+    {
+        SAL_WARN("sal.osl.pipe", "osl_sendPipe: Invalid socket");
+        errno=EINVAL;
+        return -1;
+    }
+
+    nRet = send(pPipe->m_Socket, pBuffer, BytesToSend, 0);
+
+    if (nRet <= 0)
+        SAL_WARN("sal.osl.pipe", "send() failed: " << UnixErrnoString(errno));
+
+    return nRet;
+}
+
+oslPipeError SAL_CALL osl_getLastPipeError(SAL_UNUSED_PARAMETER oslPipe)
+{
+    return osl_PipeErrorFromNative(errno);
+}
+
+sal_Int32 SAL_CALL osl_writePipe(oslPipe pPipe, const void *pBuffer, sal_Int32 n)
+{
+    /* loop until all desired bytes were send or an error occurred */
+    sal_Int32 BytesSend = 0;
+    sal_Int32 BytesToSend = n;
+
+    SAL_WARN_IF(!pPipe, "sal.osl.pipe", "osl_writePipe: invalid pipe"); // osl_sendPipe detects invalid pipe
+    while (BytesToSend > 0)
+    {
+        sal_Int32 RetVal;
+
+        RetVal= osl_sendPipe(pPipe, pBuffer, BytesToSend);
+
+        /* error occurred? */
+        if (RetVal <= 0)
+            break;
+
+        BytesToSend -= RetVal;
+        BytesSend += RetVal;
+        pBuffer= static_cast< char const* >(pBuffer) + RetVal;
+    }
+
+    return BytesSend;
+}
+
+sal_Int32 SAL_CALL osl_readPipe( oslPipe pPipe, void *pBuffer , sal_Int32 n )
+{
+    /* loop until all desired bytes were read or an error occurred */
+    sal_Int32 BytesRead = 0;
+    sal_Int32 BytesToRead = n;
+
+    SAL_WARN_IF(!pPipe, "sal.osl.pipe", "osl_readPipe: invalid pipe"); // osl_receivePipe detects invalid pipe
+    while (BytesToRead > 0)
+    {
+        sal_Int32 RetVal;
+        RetVal= osl_receivePipe(pPipe, pBuffer, BytesToRead);
+
+        /* error occurred? */
+        if (RetVal <= 0)
+            break;
+
+        BytesToRead -= RetVal;
+        BytesRead += RetVal;
+        pBuffer= static_cast< char* >(pBuffer) + RetVal;
+    }
+
+    return BytesRead;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/process.cxx b/sal/osl/unx/process.cxx
new file mode 100644
index 000000000..f75534fdc
--- /dev/null
+++ b/sal/osl/unx/process.cxx
@@ -0,0 +1,1194 @@
+/* -*- 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 <sal/config.h>
+#include <rtl/ustring.hxx>
+
+#include <cassert>
+
+/*
+ *   ToDo:
+ *      - cleanup of process status things
+ *      - cleanup of process spawning
+ *      - cleanup of resource transfer
+ */
+
+#if defined(__sun)
+  // The procfs may only be used without LFS in 32bits.
+# ifdef _FILE_OFFSET_BITS
+#   undef   _FILE_OFFSET_BITS
+# endif
+#endif
+
+#if defined(FREEBSD) || defined(NETBSD) || defined(DRAGONFLY)
+#include <machine/param.h>
+#endif
+
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+#if defined(__sun)
+# include <sys/procfs.h>
+#endif
+#include <osl/diagnose.h>
+#include <osl/mutex.h>
+#include <osl/process.h>
+#include <osl/conditn.h>
+#include <osl/thread.h>
+#include <osl/file.h>
+#include <osl/file.hxx>
+#include <osl/signal.h>
+#include <rtl/alloc.h>
+#include <sal/log.hxx>
+
+#include <grp.h>
+
+#include "createfilehandlefromfd.hxx"
+#include "file_url.hxx"
+#include "readwrite_helper.hxx"
+#include "sockimpl.hxx"
+#include "secimpl.hxx"
+
+#define MAX_ARGS        255
+#define MAX_ENVS        255
+
+namespace
+{
+
+struct oslProcessImpl {
+    pid_t           m_pid;
+    oslCondition    m_terminated;
+    int             m_status;
+    oslProcessImpl* m_pnext;
+};
+
+struct ProcessData
+{
+    const char*      m_pszArgs[MAX_ARGS + 1];
+    const char*      m_pszDir;
+    char*            m_pszEnv[MAX_ENVS + 1];
+    uid_t            m_uid;
+    gid_t            m_gid;
+    char*            m_name;
+    oslCondition     m_started;
+    oslProcessImpl*  m_pProcImpl;
+    oslFileHandle    *m_pInputWrite;
+    oslFileHandle    *m_pOutputRead;
+    oslFileHandle    *m_pErrorRead;
+};
+
+oslProcessImpl* ChildList;
+oslMutex        ChildListMutex;
+
+} //Anonymous namespace
+
+static oslProcessError osl_psz_executeProcess(char *pszImageName,
+                                                char *pszArguments[],
+                                                oslProcessOption Options,
+                                                oslSecurity Security,
+                                                char *pszDirectory,
+                                                char *pszEnvironments[],
+                                                oslProcess *pProcess,
+                                                oslFileHandle *pInputWrite,
+                                                oslFileHandle *pOutputRead,
+                                                oslFileHandle *pErrorRead );
+
+extern "C" {
+
+static void ChildStatusProc(void *pData)
+{
+    osl_setThreadName("osl_executeProcess");
+
+    pid_t pid = -1;
+    int   status = 0;
+    int   channel[2] = { -1, -1 };
+    ProcessData  data;
+    ProcessData *pdata;
+    int     stdOutput[2] = { -1, -1 }, stdInput[2] = { -1, -1 }, stdError[2] = { -1, -1 };
+
+    pdata = static_cast<ProcessData *>(pData);
+
+    /* make a copy of our data, because forking will only copy
+       our local stack of the thread, so the process data will not be accessible
+       in our child process */
+    memcpy(&data, pData, sizeof(data));
+
+#ifdef NO_CHILD_PROCESSES
+#define fork() (errno = EINVAL, -1)
+#endif
+    if (socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == -1)
+    {
+        status = errno;
+        SAL_WARN("sal.osl", "executeProcess socketpair() errno " << status);
+    }
+
+    (void) fcntl(channel[0], F_SETFD, FD_CLOEXEC);
+    (void) fcntl(channel[1], F_SETFD, FD_CLOEXEC);
+
+    /* Create redirected IO pipes */
+    if ( status == 0 && data.m_pInputWrite && pipe( stdInput ) == -1 )
+    {
+        status = errno;
+        assert(status != 0);
+        SAL_WARN("sal.osl", "executeProcess pipe(stdInput) errno " << status);
+    }
+
+    if ( status == 0 && data.m_pOutputRead && pipe( stdOutput ) == -1 )
+    {
+        status = errno;
+        assert(status != 0);
+        SAL_WARN("sal.osl", "executeProcess pipe(stdOutput) errno " << status);
+    }
+
+    if ( status == 0 && data.m_pErrorRead && pipe( stdError ) == -1 )
+    {
+        status = errno;
+        assert(status != 0);
+        SAL_WARN("sal.osl", "executeProcess pipe(stdError) errno " << status);
+    }
+
+    if ( (status == 0) && ((pid = fork()) == 0) )
+    {
+        /* Child */
+        int chstatus = 0;
+        int errno_copy;
+
+        if (channel[0] != -1) close(channel[0]);
+
+        if ((data.m_uid != uid_t(-1)) && ((data.m_uid != getuid()) || (data.m_gid != getgid())))
+        {
+            OSL_ASSERT(geteuid() == 0);     /* must be root */
+
+            if (! INIT_GROUPS(data.m_name, data.m_gid) || (setuid(data.m_uid) != 0))
+            {
+                // ignore; can't do much about it here after fork
+            }
+
+            unsetenv("HOME");
+        }
+
+        if (data.m_pszDir)
+            chstatus = chdir(data.m_pszDir);
+
+        if (chstatus == 0 && ((data.m_uid == uid_t(-1)) || ((data.m_uid == getuid()) && (data.m_gid == getgid()))))
+        {
+            int i;
+            for (i = 0; data.m_pszEnv[i] != nullptr; i++)
+            {
+                if (strchr(data.m_pszEnv[i], '=') == nullptr)
+                {
+                    unsetenv(data.m_pszEnv[i]); /*TODO: check error return*/
+                }
+                else
+                {
+                    putenv(data.m_pszEnv[i]); /*TODO: check error return*/
+                }
+            }
+
+            /* Connect std IO to pipe ends */
+
+            /* Write end of stdInput not used in child process */
+            if (stdInput[1] != -1) close( stdInput[1] );
+
+            /* Read end of stdOutput not used in child process */
+            if (stdOutput[0] != -1) close( stdOutput[0] );
+
+            /* Read end of stdError not used in child process */
+            if (stdError[0] != -1) close( stdError[0] );
+
+            /* Redirect pipe ends to std IO */
+
+            if ( stdInput[0] != STDIN_FILENO )
+            {
+                dup2( stdInput[0], STDIN_FILENO );
+                if (stdInput[0] != -1) close( stdInput[0] );
+            }
+
+            if ( stdOutput[1] != STDOUT_FILENO )
+            {
+                dup2( stdOutput[1], STDOUT_FILENO );
+                if (stdOutput[1] != -1) close( stdOutput[1] );
+            }
+
+            if ( stdError[1] != STDERR_FILENO )
+            {
+                dup2( stdError[1], STDERR_FILENO );
+                if (stdError[1] != -1) close( stdError[1] );
+            }
+
+            // No need to check the return value of execv. If we return from
+            // it, an error has occurred.
+            execv(data.m_pszArgs[0], const_cast<char **>(data.m_pszArgs));
+        }
+
+        /* if we reach here, something went wrong */
+        errno_copy = errno;
+        if ( !safeWrite(channel[1], &errno_copy, sizeof(errno_copy)) )
+        {
+            // ignore; can't do much about it here after fork
+        }
+
+        if ( channel[1] != -1 )
+            close(channel[1]);
+
+        _exit(255);
+    }
+    else
+    {   /* Parent  */
+        int i = -1;
+        if (channel[1] != -1) close(channel[1]);
+
+        /* Close unused pipe ends */
+        if (stdInput[0] != -1) close( stdInput[0] );
+        if (stdOutput[1] != -1) close( stdOutput[1] );
+        if (stdError[1] != -1) close( stdError[1] );
+
+        if (pid > 0)
+        {
+            while ((i = read(channel[0], &status, sizeof(status))) < 0)
+            {
+                if (errno != EINTR)
+                    break;
+            }
+        }
+
+        if (channel[0] != -1) close(channel[0]);
+
+        if ((pid > 0) && (i == 0))
+        {
+            pid_t   child_pid;
+            osl_acquireMutex(ChildListMutex);
+
+            pdata->m_pProcImpl->m_pid = pid;
+            pdata->m_pProcImpl->m_pnext = ChildList;
+            ChildList = pdata->m_pProcImpl;
+
+            /* Store used pipe ends in data structure */
+
+            if ( pdata->m_pInputWrite )
+                *(pdata->m_pInputWrite) = osl::detail::createFileHandleFromFD( stdInput[1] );
+
+            if ( pdata->m_pOutputRead )
+                *(pdata->m_pOutputRead) = osl::detail::createFileHandleFromFD( stdOutput[0] );
+
+            if ( pdata->m_pErrorRead )
+                *(pdata->m_pErrorRead) = osl::detail::createFileHandleFromFD( stdError[0] );
+
+            osl_releaseMutex(ChildListMutex);
+
+            osl_setCondition(pdata->m_started);
+
+            do
+            {
+                child_pid = waitpid(pid, &status, 0);
+            } while ( 0 > child_pid && EINTR == errno );
+
+            if ( child_pid < 0)
+            {
+                SAL_WARN("sal.osl", "Failed to wait for child process: " << UnixErrnoString(errno));
+
+                /*
+                We got another error than EINTR. Anyway we have to wake up the
+                waiting thread under any circumstances */
+
+                child_pid = pid;
+            }
+
+            if ( child_pid > 0 )
+            {
+                oslProcessImpl* pChild;
+
+                osl_acquireMutex(ChildListMutex);
+
+                pChild = ChildList;
+
+                /* check if it is one of our child processes */
+                while (pChild != nullptr)
+                {
+                    if (pChild->m_pid == child_pid)
+                    {
+                        if (WIFEXITED(status))
+                            pChild->m_status = WEXITSTATUS(status);
+                        else if (WIFSIGNALED(status))
+                            pChild->m_status = 128 + WTERMSIG(status);
+                        else
+                            pChild->m_status = -1;
+
+                        osl_setCondition(pChild->m_terminated);
+                    }
+
+                    pChild = pChild->m_pnext;
+                }
+
+                osl_releaseMutex(ChildListMutex);
+            }
+        }
+        else
+        {
+            SAL_WARN("sal.osl", "ChildStatusProc : starting '" << data.m_pszArgs[0] << "' failed");
+            SAL_WARN("sal.osl", "Failed to launch child process, child reports " << UnixErrnoString(status));
+
+            /* Close pipe ends */
+            if ( pdata->m_pInputWrite )
+                *pdata->m_pInputWrite = nullptr;
+
+            if ( pdata->m_pOutputRead )
+                *pdata->m_pOutputRead = nullptr;
+
+            if ( pdata->m_pErrorRead )
+                *pdata->m_pErrorRead = nullptr;
+
+            if (stdInput[1] != -1) close( stdInput[1] );
+            if (stdOutput[0] != -1) close( stdOutput[0] );
+            if (stdError[0] != -1) close( stdError[0] );
+
+            /* if pid > 0 then a process was created, even if it later failed
+               e.g. bash searching for a command to execute, and we still
+               need to clean it up to avoid "defunct" processes */
+            if (pid > 0)
+            {
+                pid_t child_pid;
+                do
+                {
+                    child_pid = waitpid(pid, &status, 0);
+                } while ( 0 > child_pid && EINTR == errno );
+            }
+
+            /* notify (and unblock) parent thread */
+            osl_setCondition(pdata->m_started);
+        }
+    }
+}
+
+}
+
+oslProcessError SAL_CALL osl_executeProcess_WithRedirectedIO(
+                                            rtl_uString *ustrImageName,
+                                            rtl_uString *ustrArguments[],
+                                            sal_uInt32   nArguments,
+                                            oslProcessOption Options,
+                                            oslSecurity Security,
+                                            rtl_uString *ustrWorkDir,
+                                            rtl_uString *ustrEnvironment[],
+                                            sal_uInt32   nEnvironmentVars,
+                                            oslProcess *pProcess,
+                                            oslFileHandle   *pInputWrite,
+                                            oslFileHandle   *pOutputRead,
+                                            oslFileHandle   *pErrorRead
+                                            )
+{
+    OUString image;
+    if (ustrImageName == nullptr)
+    {
+        if (nArguments == 0)
+        {
+            return osl_Process_E_InvalidError;
+        }
+        image = OUString::unacquired(ustrArguments);
+    }
+    else
+    {
+        osl::FileBase::RC e = osl::FileBase::getSystemPathFromFileURL(
+            OUString::unacquired(&ustrImageName), image);
+        if (e != osl::FileBase::E_None)
+        {
+            SAL_INFO(
+                "sal.osl",
+                "getSystemPathFromFileURL("
+                    << OUString::unacquired(&ustrImageName)
+                    << ") failed with " << e);
+            return osl_Process_E_Unknown;
+        }
+    }
+
+    if ((Options & osl_Process_SEARCHPATH) != 0)
+    {
+        OUString path;
+        if (osl::detail::find_in_PATH(image, path))
+        {
+            image = path;
+        }
+    }
+
+    oslProcessError Error;
+    char* pszWorkDir=nullptr;
+    char** pArguments=nullptr;
+    char** pEnvironment=nullptr;
+    unsigned int idx;
+
+    char szImagePath[PATH_MAX] = "";
+    if (!image.isEmpty()
+        && (UnicodeToText(
+                szImagePath, SAL_N_ELEMENTS(szImagePath), image.getStr(),
+                image.getLength())
+            == 0))
+    {
+        int e = errno;
+        SAL_INFO("sal.osl", "UnicodeToText(" << image << ") failed with " << e);
+        return osl_Process_E_Unknown;
+    }
+
+    char szWorkDir[PATH_MAX] = "";
+    if ( ustrWorkDir != nullptr && ustrWorkDir->length )
+    {
+        oslFileError e = FileURLToPath( szWorkDir, PATH_MAX, ustrWorkDir );
+        if (e != osl_File_E_None)
+        {
+            SAL_INFO(
+                "sal.osl",
+                "FileURLToPath(" << OUString::unacquired(&ustrWorkDir)
+                    << ") failed with " << e);
+            return osl_Process_E_Unknown;
+        }
+        pszWorkDir = szWorkDir;
+    }
+
+    if ( pArguments == nullptr && nArguments > 0 )
+    {
+        pArguments = static_cast<char**>(malloc( ( nArguments + 2 ) * sizeof(char*) ));
+    }
+
+    for ( idx = 0 ; idx < nArguments ; ++idx )
+    {
+        rtl_String* strArg =nullptr;
+
+        rtl_uString2String( &strArg,
+                            rtl_uString_getStr(ustrArguments[idx]),
+                            rtl_uString_getLength(ustrArguments[idx]),
+                            osl_getThreadTextEncoding(),
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+
+        pArguments[idx]=strdup(rtl_string_getStr(strArg));
+        rtl_string_release(strArg);
+        pArguments[idx+1]=nullptr;
+    }
+
+    for ( idx = 0 ; idx < nEnvironmentVars ; ++idx )
+    {
+        rtl_String* strEnv=nullptr;
+
+        if ( pEnvironment == nullptr )
+        {
+            pEnvironment = static_cast<char**>(malloc( ( nEnvironmentVars + 2 ) * sizeof(char*) ));
+        }
+
+        rtl_uString2String( &strEnv,
+                            rtl_uString_getStr(ustrEnvironment[idx]),
+                            rtl_uString_getLength(ustrEnvironment[idx]),
+                            osl_getThreadTextEncoding(),
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+
+        pEnvironment[idx]=strdup(rtl_string_getStr(strEnv));
+        rtl_string_release(strEnv);
+        pEnvironment[idx+1]=nullptr;
+    }
+
+    Error = osl_psz_executeProcess(szImagePath,
+                                   pArguments,
+                                   Options,
+                                   Security,
+                                   pszWorkDir,
+                                   pEnvironment,
+                                   pProcess,
+                                   pInputWrite,
+                                   pOutputRead,
+                                   pErrorRead
+                                   );
+
+    if ( pArguments != nullptr )
+    {
+        for ( idx = 0 ; idx < nArguments ; ++idx )
+        {
+            if ( pArguments[idx] != nullptr )
+            {
+                free(pArguments[idx]);
+            }
+        }
+        free(pArguments);
+    }
+
+    if ( pEnvironment != nullptr )
+    {
+        for ( idx = 0 ; idx < nEnvironmentVars ; ++idx )
+        {
+            if ( pEnvironment[idx] != nullptr )
+            {
+                free(pEnvironment[idx]);
+            }
+        }
+        free(pEnvironment);
+    }
+
+    return Error;
+}
+
+oslProcessError SAL_CALL osl_executeProcess(
+                                            rtl_uString *ustrImageName,
+                                            rtl_uString *ustrArguments[],
+                                            sal_uInt32   nArguments,
+                                            oslProcessOption Options,
+                                            oslSecurity Security,
+                                            rtl_uString *ustrWorkDir,
+                                            rtl_uString *ustrEnvironment[],
+                                            sal_uInt32   nEnvironmentVars,
+                                            oslProcess *pProcess
+                                            )
+{
+    return osl_executeProcess_WithRedirectedIO(
+        ustrImageName,
+        ustrArguments,
+        nArguments,
+        Options,
+        Security,
+        ustrWorkDir,
+        ustrEnvironment,
+        nEnvironmentVars,
+        pProcess,
+        nullptr,
+        nullptr,
+        nullptr
+        );
+}
+
+oslProcessError osl_psz_executeProcess(char *pszImageName,
+                                                char *pszArguments[],
+                                                oslProcessOption Options,
+                                                oslSecurity Security,
+                                                char *pszDirectory,
+                                                char *pszEnvironments[],
+                                                oslProcess *pProcess,
+                                                oslFileHandle   *pInputWrite,
+                                                oslFileHandle   *pOutputRead,
+                                                oslFileHandle   *pErrorRead
+                                                )
+{
+    int i;
+    ProcessData Data;
+    oslThread hThread;
+
+    memset(&Data,0,sizeof(ProcessData));
+    Data.m_pInputWrite = pInputWrite;
+    Data.m_pOutputRead = pOutputRead;
+    Data.m_pErrorRead = pErrorRead;
+
+    OSL_ASSERT(pszImageName != nullptr);
+
+    if ( pszImageName == nullptr )
+    {
+        return osl_Process_E_NotFound;
+    }
+
+    Data.m_pszArgs[0] = strdup(pszImageName);
+    Data.m_pszArgs[1] = nullptr;
+
+    if ( pszArguments != nullptr )
+    {
+        for (i = 0; ((i + 2) < MAX_ARGS) && (pszArguments[i] != nullptr); i++)
+            Data.m_pszArgs[i+1] = strdup(pszArguments[i]);
+        Data.m_pszArgs[i+2] = nullptr;
+    }
+
+    Data.m_pszDir  = (pszDirectory != nullptr) ? strdup(pszDirectory) : nullptr;
+
+    if (pszEnvironments != nullptr)
+    {
+        for (i = 0; ((i + 1) < MAX_ENVS) &&  (pszEnvironments[i] != nullptr); i++)
+            Data.m_pszEnv[i] = strdup(pszEnvironments[i]);
+        Data.m_pszEnv[i+1] = nullptr;
+    }
+    else
+         Data.m_pszEnv[0] = nullptr;
+
+    if (Security != nullptr)
+    {
+        Data.m_uid  = static_cast<oslSecurityImpl*>(Security)->m_pPasswd.pw_uid;
+        Data.m_gid  = static_cast<oslSecurityImpl*>(Security)->m_pPasswd.pw_gid;
+        Data.m_name = static_cast<oslSecurityImpl*>(Security)->m_pPasswd.pw_name;
+    }
+    else
+        Data.m_uid = uid_t(-1);
+
+    Data.m_pProcImpl = static_cast<oslProcessImpl*>(malloc(sizeof(oslProcessImpl)));
+    Data.m_pProcImpl->m_pid = 0;
+    Data.m_pProcImpl->m_terminated = osl_createCondition();
+    Data.m_pProcImpl->m_pnext = nullptr;
+
+    if (ChildListMutex == nullptr)
+        ChildListMutex = osl_createMutex();
+
+    Data.m_started = osl_createCondition();
+
+    hThread = osl_createThread(ChildStatusProc, &Data);
+
+    if (hThread != nullptr)
+    {
+        osl_waitCondition(Data.m_started, nullptr);
+    }
+    osl_destroyCondition(Data.m_started);
+
+    for (i = 0; Data.m_pszArgs[i] != nullptr; i++)
+          free(const_cast<char *>(Data.m_pszArgs[i]));
+
+    for (i = 0; Data.m_pszEnv[i] != nullptr; i++)
+          free(Data.m_pszEnv[i]);
+
+    if ( Data.m_pszDir != nullptr )
+    {
+        free(const_cast<char *>(Data.m_pszDir));
+    }
+
+    osl_destroyThread(hThread);
+
+    if (Data.m_pProcImpl->m_pid != 0)
+    {
+        assert(hThread != nullptr);
+
+        *pProcess = Data.m_pProcImpl;
+
+        if (Options & osl_Process_WAIT)
+            osl_joinProcess(*pProcess);
+
+        return osl_Process_E_None;
+    }
+
+    osl_destroyCondition(Data.m_pProcImpl->m_terminated);
+    free(Data.m_pProcImpl);
+
+    return osl_Process_E_Unknown;
+}
+
+oslProcessError SAL_CALL osl_terminateProcess(oslProcess Process)
+{
+    if (Process == nullptr)
+        return osl_Process_E_Unknown;
+
+    if (kill(static_cast<oslProcessImpl*>(Process)->m_pid, SIGKILL) != 0)
+    {
+        switch (errno)
+        {
+            case EPERM:
+                return osl_Process_E_NoPermission;
+
+            case ESRCH:
+                return osl_Process_E_NotFound;
+
+            default:
+                return osl_Process_E_Unknown;
+        }
+    }
+
+    return osl_Process_E_None;
+}
+
+oslProcess SAL_CALL osl_getProcess(oslProcessIdentifier Ident)
+{
+    oslProcessImpl *pProcImpl;
+
+    if (kill(Ident, 0) != -1)
+    {
+        oslProcessImpl* pChild;
+
+        if (ChildListMutex == nullptr)
+            ChildListMutex = osl_createMutex();
+
+        osl_acquireMutex(ChildListMutex);
+
+        pChild = ChildList;
+
+        /* check if it is one of our child processes */
+        while (pChild != nullptr)
+        {
+            if (Ident == static_cast<sal_uInt32>(pChild->m_pid))
+                break;
+
+            pChild = pChild->m_pnext;
+        }
+
+        pProcImpl = static_cast<oslProcessImpl*>(malloc(sizeof(oslProcessImpl)));
+        pProcImpl->m_pid        = Ident;
+        pProcImpl->m_terminated = osl_createCondition();
+
+        if (pChild != nullptr)
+        {
+            /* process is a child so insert into list */
+            pProcImpl->m_pnext = pChild->m_pnext;
+            pChild->m_pnext = pProcImpl;
+
+            pProcImpl->m_status = pChild->m_status;
+
+            if (osl_checkCondition(pChild->m_terminated))
+                osl_setCondition(pProcImpl->m_terminated);
+        }
+        else
+            pProcImpl->m_pnext = nullptr;
+
+        osl_releaseMutex(ChildListMutex);
+    }
+    else
+        pProcImpl = nullptr;
+
+    return pProcImpl;
+}
+
+void SAL_CALL osl_freeProcessHandle(oslProcess Process)
+{
+    if (Process == nullptr)
+        return;
+
+    oslProcessImpl *pChild, *pPrev = nullptr;
+
+    OSL_ASSERT(ChildListMutex != nullptr);
+
+    if ( ChildListMutex == nullptr )
+    {
+        return;
+    }
+
+    osl_acquireMutex(ChildListMutex);
+
+    pChild = ChildList;
+
+    /* remove process from child list */
+    while (pChild != nullptr)
+    {
+        if (pChild == static_cast<oslProcessImpl*>(Process))
+        {
+            if (pPrev != nullptr)
+                pPrev->m_pnext = pChild->m_pnext;
+            else
+                ChildList = pChild->m_pnext;
+
+            break;
+        }
+
+        pPrev  = pChild;
+        pChild = pChild->m_pnext;
+    }
+
+    osl_releaseMutex(ChildListMutex);
+
+    osl_destroyCondition(static_cast<oslProcessImpl*>(Process)->m_terminated);
+
+    free(Process);
+}
+
+#if defined(LINUX)
+namespace {
+
+struct osl_procStat
+{
+   /* from 'stat' */
+    pid_t pid;                /* pid */
+    char command[16];         /* 'argv[0]' */ /* mfe: it all right char comm[16] in kernel! */
+    char state;               /* state (running, stopped, ...) */
+    pid_t ppid;               /* parent pid */
+    pid_t pgrp;               /* parent group */
+    int session;              /* session ID */
+    int tty;                  /* no of tty */
+    pid_t tpgid;              /* group of process owning the tty */
+    unsigned long flags;      /* flags dunno */
+    unsigned long minflt;     /* minor page faults */
+    unsigned long cminflt;    /* minor page faults with children */
+    unsigned long majflt;     /* major page faults */
+    unsigned long cmajflt;    /* major page faults with children */
+    unsigned long utime;      /* no of jiffies in user mode */
+    unsigned long stime;      /* no of jiffies in kernel mode */
+    unsigned long cutime;     /* no of jiffies in user mode with children */
+    unsigned long cstime;     /* no of jiffies in kernel mode with children */
+    unsigned long priority;   /* nice value + 15 (kernel scheduling prio)*/
+    long nice;                /* nice value */
+    long timeout;             /* no of jiffies of next process timeout */
+    long itrealvalue;         /* no jiffies before next SIGALRM */
+    unsigned long starttime;  /* process started this no of jiffies after boot */
+    unsigned long vsize;      /* virtual memory size (in bytes) */
+    long rss;                 /* resident set size (in pages) */
+    unsigned long rss_rlim;   /* rss limit (in bytes) */
+    unsigned long startcode;   /* address above program text can run */
+    unsigned long endcode;    /* address below program text can run */
+    unsigned long startstack; /* address of start of stack */
+    unsigned long kstkesp;    /* current value of 'esp' (stack pointer) */
+    unsigned long kstkeip;    /* current value of 'eip' (instruction pointer) */
+    /* mfe: Linux > 2.1.7x have more signals (88) */
+    char signal[24];          /* pending signals */
+    char blocked[24];         /* blocked signals */
+    char sigignore[24];       /* ignored signals */
+    char sigcatch[24];        /* caught signals */
+    unsigned long wchan;      /* 'channel' the process is waiting in */
+    unsigned long nswap;      /* ? */
+    unsigned long cnswap;     /* ? */
+
+    /* from 'status' */
+    int ruid;                 /* real uid */
+    int euid;                 /* effective uid */
+    int suid;                 /* saved uid */
+    int fuid;                 /* file access uid */
+    int rgid;                 /* real gid */
+    int egid;                 /* effective gid */
+    int sgid;                 /* saved gid */
+    int fgid;                 /* file access gid */
+    unsigned long vm_size;    /* like vsize but on kb */
+    unsigned long vm_lock;    /* locked pages in kb */
+    unsigned long vm_rss;     /* like rss but in kb */
+    unsigned long vm_data;    /* data size */
+    unsigned long vm_stack;   /* stack size */
+    unsigned long vm_exe;     /* executable size */
+    unsigned long vm_lib;     /* library size */
+};
+
+}
+
+static bool osl_getProcStat(pid_t pid, struct osl_procStat* procstat)
+{
+    int fd = 0;
+    bool bRet = false;
+    char name[PATH_MAX + 1];
+    snprintf(name, sizeof(name), "/proc/%u/stat", pid);
+
+    if ((fd = open(name,O_RDONLY)) >=0 )
+    {
+        char* tmp=nullptr;
+        char prstatbuf[512];
+        memset(prstatbuf,0,512);
+        bRet = safeRead(fd, prstatbuf, 511);
+
+        close(fd);
+
+        if (!bRet)
+            return false;
+
+        tmp = strrchr(prstatbuf, ')');
+        if(tmp)
+        {
+            *tmp = '\0';
+
+            memset(procstat->command, 0, sizeof(procstat->command));
+
+            sscanf(prstatbuf, "%d (%15c", &procstat->pid, procstat->command);
+            sscanf(tmp + 2,
+               "%c"
+               "%i %i %i %i %i"
+               "%lu %lu %lu %lu %lu"
+               "%lu %lu %lu %lu"
+               "%lu %li %li %li"
+               "%lu %lu %li %lu"
+               "%lu %lu %lu %lu %lu"
+               "%23s %23s %23s %23s"
+               "%lu %lu %lu",
+               &procstat->state,
+               &procstat->ppid,      &procstat->pgrp,    &procstat->session,    &procstat->tty,         &procstat->tpgid,
+               &procstat->flags,     &procstat->minflt,  &procstat->cminflt,    &procstat->majflt,      &procstat->cmajflt,
+               &procstat->utime,     &procstat->stime,   &procstat->cutime,     &procstat->cstime,
+               &procstat->priority,  &procstat->nice,    &procstat->timeout,    &procstat->itrealvalue,
+               &procstat->starttime, &procstat->vsize,   &procstat->rss,        &procstat->rss_rlim,
+               &procstat->startcode, &procstat->endcode, &procstat->startstack, &procstat->kstkesp,     &procstat->kstkeip,
+               procstat->signal,     procstat->blocked,  procstat->sigignore,   procstat->sigcatch,
+               &procstat->wchan,     &procstat->nswap,   &procstat->cnswap
+            );
+        }
+        else
+        {
+            bRet = false;
+        }
+    }
+    return bRet;
+}
+
+static bool osl_getProcStatus(pid_t pid, struct osl_procStat* procstat)
+{
+    int fd = 0;
+    char name[PATH_MAX + 1];
+    bool bRet = false;
+
+    snprintf(name, sizeof(name), "/proc/%u/status", pid);
+
+    if ((fd = open(name,O_RDONLY)) >=0 )
+    {
+        char* tmp=nullptr;
+        char prstatusbuf[512];
+        memset(prstatusbuf,0,512);
+        bRet = safeRead(fd, prstatusbuf, 511);
+
+        close(fd);
+
+        if (!bRet)
+            return false;
+
+        tmp = strstr(prstatusbuf,"Uid:");
+        if(tmp)
+        {
+            sscanf(tmp,"Uid:\t%d\t%d\t%d\t%d",
+                   &procstat->ruid, &procstat->euid, &procstat->suid, &procstat->fuid
+                );
+        }
+
+        tmp = strstr(prstatusbuf,"Gid:");
+        if(tmp)
+        {
+            sscanf(tmp,"Gid:\t%d\t%d\t%d\t%d",
+                   &procstat->rgid, &procstat->egid, &procstat->sgid, &procstat->fgid
+                );
+        }
+
+        tmp = strstr(prstatusbuf,"VmSize:");
+        if(tmp)
+        {
+            sscanf(tmp,
+                   "VmSize: %lu kB\n"
+                   "VmLck: %lu kB\n"
+                   "VmRSS: %lu kB\n"
+                   "VmData: %lu kB\n"
+                   "VmStk: %lu kB\n"
+                   "VmExe: %lu kB\n"
+                   "VmLib: %lu kB\n",
+                   &procstat->vm_size, &procstat->vm_lock, &procstat->vm_rss, &procstat->vm_data,
+                   &procstat->vm_stack, &procstat->vm_exe, &procstat->vm_lib
+                );
+        }
+
+        tmp = strstr(prstatusbuf,"SigPnd:");
+        if(tmp)
+        {
+            sscanf(tmp, "SigPnd: %23s SigBlk: %23s SigIgn: %23s %*s %23s",
+                   procstat->signal, procstat->blocked, procstat->sigignore, procstat->sigcatch
+                );
+        }
+    }
+    return bRet;
+}
+
+#endif
+
+oslProcessError SAL_CALL osl_getProcessInfo(oslProcess Process, oslProcessData Fields, oslProcessInfo* pInfo)
+{
+    pid_t   pid;
+
+    if (Process == nullptr)
+        pid = getpid();
+    else
+        pid = static_cast<oslProcessImpl*>(Process)->m_pid;
+
+    if (! pInfo || (pInfo->Size != sizeof(oslProcessInfo)))
+        return osl_Process_E_Unknown;
+
+    pInfo->Fields = 0;
+
+    if (Fields & osl_Process_IDENTIFIER)
+    {
+        pInfo->Ident  = pid;
+        pInfo->Fields |= osl_Process_IDENTIFIER;
+    }
+
+    if (Fields & osl_Process_EXITCODE)
+    {
+        if ((Process != nullptr) &&
+            osl_checkCondition(static_cast<oslProcessImpl*>(Process)->m_terminated))
+        {
+            pInfo->Code = static_cast<oslProcessImpl*>(Process)->m_status;
+            pInfo->Fields |= osl_Process_EXITCODE;
+        }
+    }
+
+    if (Fields & (osl_Process_HEAPUSAGE | osl_Process_CPUTIMES))
+    {
+
+#if defined(__sun)
+
+        int  fd;
+        char name[PATH_MAX + 1];
+
+        snprintf(name, sizeof(name), "/proc/%ld", (long)pid);
+
+        if ((fd = open(name, O_RDONLY)) >= 0)
+        {
+            prstatus_t prstatus;
+
+            if (ioctl(fd, PIOCSTATUS, &prstatus) >= 0)
+            {
+                if (Fields & osl_Process_CPUTIMES)
+                {
+                    pInfo->UserTime.Seconds   = prstatus.pr_utime.tv_sec;
+                    pInfo->UserTime.Nanosec   = prstatus.pr_utime.tv_nsec;
+                    pInfo->SystemTime.Seconds = prstatus.pr_stime.tv_sec;
+                    pInfo->SystemTime.Nanosec = prstatus.pr_stime.tv_nsec;
+
+                    pInfo->Fields |= osl_Process_CPUTIMES;
+                }
+
+                if (Fields & osl_Process_HEAPUSAGE)
+                {
+                    pInfo->HeapUsage = prstatus.pr_brksize;
+
+                    pInfo->Fields |= osl_Process_HEAPUSAGE;
+                }
+
+                close(fd);
+
+                return (pInfo->Fields == Fields) ? osl_Process_E_None : osl_Process_E_Unknown;
+            }
+            else
+                close(fd);
+        }
+
+#elif defined(LINUX)
+
+        if ( (Fields & osl_Process_CPUTIMES) || (Fields & osl_Process_HEAPUSAGE) )
+        {
+            struct osl_procStat procstat;
+            memset(&procstat,0,sizeof(procstat));
+
+            if ( (Fields & osl_Process_CPUTIMES) && osl_getProcStat(pid, &procstat) )
+            {
+                /*
+                 *  mfe:
+                 *  We calculate only time of the process proper.
+                 *  Threads are processes, we do not consider their time here!
+                 *  (For this, cutime and cstime should be used, it seems not
+                 *   to work in 2.0.36)
+                 */
+
+                long clktck;
+                unsigned long hz;
+                unsigned long userseconds;
+                unsigned long systemseconds;
+
+                clktck = sysconf(_SC_CLK_TCK);
+                if (clktck <= 0) {
+                    return osl_Process_E_Unknown;
+                }
+                hz = static_cast<unsigned long>(clktck);
+
+                userseconds = procstat.utime/hz;
+                systemseconds = procstat.stime/hz;
+
+                pInfo->UserTime.Seconds   = userseconds;
+                pInfo->UserTime.Nanosec   = procstat.utime - (userseconds * hz);
+                pInfo->SystemTime.Seconds = systemseconds;
+                pInfo->SystemTime.Nanosec = procstat.stime - (systemseconds * hz);
+
+                pInfo->Fields |= osl_Process_CPUTIMES;
+            }
+
+            if ( (Fields & osl_Process_HEAPUSAGE) && osl_getProcStatus(pid, &procstat) )
+            {
+                /*
+                 *  mfe:
+                 *  vm_data (found in status) shows the size of the data segment
+                 *  it a rough approximation of the core heap size
+                 */
+                pInfo->HeapUsage = procstat.vm_data*1024;
+
+                pInfo->Fields |= osl_Process_HEAPUSAGE;
+            }
+        }
+
+        return (pInfo->Fields == Fields) ? osl_Process_E_None : osl_Process_E_Unknown;
+#endif
+
+    }
+
+    return (pInfo->Fields == Fields) ? osl_Process_E_None : osl_Process_E_Unknown;
+}
+
+/** Helper function for osl_joinProcessWithTimeout
+ */
+
+static bool is_timeout(const struct timeval* tend)
+{
+    struct timeval tcurrent;
+    gettimeofday(&tcurrent, nullptr);
+    return (tcurrent.tv_sec >= tend->tv_sec);
+}
+
+/* kill(pid, 0) is useful for checking if a
+ process is still alive, but remember that
+ kill even returns 0 if the process is already
+ a zombie. */
+
+static bool is_process_dead(pid_t pid)
+{
+    return ((kill(pid, 0) == -1) && (ESRCH == errno));
+}
+
+oslProcessError SAL_CALL osl_joinProcessWithTimeout(oslProcess Process, const TimeValue* pTimeout)
+{
+    oslProcessImpl* pChild    = ChildList;
+    oslProcessError osl_error = osl_Process_E_None;
+
+    OSL_PRECOND(Process, "osl_joinProcess: Invalid parameter");
+    OSL_ASSERT(ChildListMutex);
+
+    if (Process == nullptr || ChildListMutex == nullptr)
+        return osl_Process_E_Unknown;
+
+    osl_acquireMutex(ChildListMutex);
+
+    /* check if process is a child of ours */
+    while (pChild != nullptr)
+    {
+        if (pChild == static_cast<oslProcessImpl*>(Process))
+            break;
+
+        pChild = pChild->m_pnext;
+    }
+
+    osl_releaseMutex(ChildListMutex);
+
+    if (pChild != nullptr)
+    {
+        oslConditionResult cond_res = osl_waitCondition(pChild->m_terminated, pTimeout);
+
+        if (cond_res == osl_cond_result_timeout)
+            osl_error = osl_Process_E_TimedOut;
+        else if (cond_res != osl_cond_result_ok)
+            osl_error = osl_Process_E_Unknown;
+    }
+    else /* alien process; StatusThread will not be able
+               to set the condition terminated */
+    {
+        pid_t pid = static_cast<oslProcessImpl*>(Process)->m_pid;
+
+        if (pTimeout)
+        {
+            bool timeout = false;
+            struct timeval tend;
+
+            gettimeofday(&tend, nullptr);
+
+            tend.tv_sec += pTimeout->Seconds;
+
+            while (!is_process_dead(pid) && !(timeout = is_timeout(&tend)))
+                sleep(1);
+
+            if (timeout)
+                osl_error = osl_Process_E_TimedOut;
+        }
+        else /* infinite */
+        {
+            while (!is_process_dead(pid))
+                sleep(1);
+        }
+    }
+    return osl_error;
+}
+
+oslProcessError SAL_CALL osl_joinProcess(oslProcess Process)
+{
+    return osl_joinProcessWithTimeout(Process, nullptr);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/process_impl.cxx b/sal/osl/unx/process_impl.cxx
new file mode 100644
index 000000000..5d7f7644f
--- /dev/null
+++ b/sal/osl/unx/process_impl.cxx
@@ -0,0 +1,473 @@
+/* -*- 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 <osl/process.h>
+
+#include <limits.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <osl/diagnose.h>
+#include <osl/file.hxx>
+#include <osl/module.h>
+#include <osl/thread.h>
+#include <rtl/alloc.h>
+#include <rtl/ustring.hxx>
+#include <rtl/strbuf.h>
+#include <sal/log.hxx>
+
+#include "file_path_helper.hxx"
+
+#include "uunxapi.hxx"
+#include "nlsupport.hxx"
+
+#ifdef ANDROID
+#include <osl/detail/android-bootstrap.h>
+#endif
+
+#if defined(MACOSX) || defined(IOS)
+#include <mach-o/dyld.h>
+
+namespace {
+
+oslProcessError bootstrap_getExecutableFile(rtl_uString ** ppFileURL)
+{
+    oslProcessError result = osl_Process_E_NotFound;
+
+    char   buffer[PATH_MAX];
+    uint32_t buflen = sizeof(buffer);
+
+    if (_NSGetExecutablePath (buffer, &buflen) == 0)
+    {
+        /* Determine absolute path. */
+        char abspath[PATH_MAX];
+        if (realpath (buffer, abspath) != nullptr)
+        {
+            /* Convert from utf8 to unicode. */
+            rtl_uString * pAbsPath = nullptr;
+            rtl_string2UString (
+                &pAbsPath,
+                abspath, rtl_str_getLength (abspath),
+                RTL_TEXTENCODING_UTF8,
+                OSTRING_TO_OUSTRING_CVTFLAGS);
+
+            if (pAbsPath)
+            {
+                /* Convert from path to url. */
+                if (osl_getFileURLFromSystemPath (pAbsPath, ppFileURL) == osl_File_E_None)
+                {
+                    /* Success. */
+                    result = osl_Process_E_None;
+                }
+                rtl_uString_release (pAbsPath);
+            }
+        }
+    }
+
+    return result;
+}
+
+}
+
+#else
+#include <dlfcn.h>
+
+namespace {
+
+oslProcessError bootstrap_getExecutableFile(rtl_uString ** ppFileURL)
+{
+    oslProcessError result = osl_Process_E_NotFound;
+
+#ifdef ANDROID
+    /* Now with just a single DSO, this one from lo-bootstrap.c is as good as
+     * any */
+    void * addr = dlsym (RTLD_DEFAULT, "JNI_OnLoad");
+#else
+#if defined __linux
+    // The below code looking for "main" with dlsym() will typically
+    // fail, as there is little reason for "main" to be exported, in
+    // the dlsym() sense, from an executable. But Linux has
+    // /proc/self/exe, try using that.
+    char buf[PATH_MAX];
+    int rc = readlink("/proc/self/exe", buf, sizeof(buf));
+    if (rc > 0 && rc < PATH_MAX)
+    {
+        buf[rc] = '\0';
+        OUString path = OUString::fromUtf8(buf);
+        OUString fileURL;
+        if (osl::File::getFileURLFromSystemPath(path, fileURL) == osl::File::E_None)
+        {
+            rtl_uString_acquire(fileURL.pData);
+            *ppFileURL = fileURL.pData;
+            return osl_Process_E_None;
+        }
+    }
+#endif
+    /* Determine address of "main()" function. */
+    void * addr = dlsym (RTLD_DEFAULT, "main");
+#endif
+    if (addr != nullptr)
+    {
+        /* Determine module URL. */
+        if (osl_getModuleURLFromAddress (addr, ppFileURL))
+        {
+            /* Success. */
+            result = osl_Process_E_None;
+        }
+    }
+
+    return result;
+}
+
+}
+
+#endif
+
+namespace {
+
+struct CommandArgs_Impl
+{
+    pthread_mutex_t m_mutex;
+    sal_uInt32      m_nCount;
+    rtl_uString **  m_ppArgs;
+};
+
+}
+
+static struct CommandArgs_Impl g_command_args =
+{
+    PTHREAD_MUTEX_INITIALIZER,
+    0,
+    nullptr
+};
+
+oslProcessError SAL_CALL osl_getExecutableFile (rtl_uString ** ppustrFile)
+{
+    pthread_mutex_lock (&(g_command_args.m_mutex));
+    if (g_command_args.m_nCount == 0)
+    {
+        pthread_mutex_unlock (&(g_command_args.m_mutex));
+        return bootstrap_getExecutableFile(ppustrFile);
+    }
+
+    /* CommandArgs set. Obtain argv[0]. */
+    rtl_uString_assign (ppustrFile, g_command_args.m_ppArgs[0]);
+    pthread_mutex_unlock (&(g_command_args.m_mutex));
+    return osl_Process_E_None;
+}
+
+sal_uInt32 SAL_CALL osl_getCommandArgCount()
+{
+    sal_uInt32 result = 0;
+
+    pthread_mutex_lock (&(g_command_args.m_mutex));
+    SAL_INFO_IF(
+        g_command_args.m_nCount == 0, "sal.osl",
+        "osl_getCommandArgCount w/o prior call to osl_setCommandArgs");
+    if (g_command_args.m_nCount > 0)
+        result = g_command_args.m_nCount - 1;
+    pthread_mutex_unlock (&(g_command_args.m_mutex));
+
+    return result;
+}
+
+oslProcessError SAL_CALL osl_getCommandArg (sal_uInt32 nArg, rtl_uString ** strCommandArg)
+{
+    oslProcessError result = osl_Process_E_NotFound;
+
+    pthread_mutex_lock (&(g_command_args.m_mutex));
+    assert(g_command_args.m_nCount > 0);
+    if (g_command_args.m_nCount > (nArg + 1))
+    {
+        rtl_uString_assign (strCommandArg, g_command_args.m_ppArgs[nArg + 1]);
+        result = osl_Process_E_None;
+    }
+    pthread_mutex_unlock (&(g_command_args.m_mutex));
+
+    return result;
+}
+
+void SAL_CALL osl_setCommandArgs (int argc, char ** argv)
+{
+    assert(argc > 0);
+    pthread_mutex_lock (&(g_command_args.m_mutex));
+    SAL_WARN_IF(g_command_args.m_nCount != 0, "sal.osl", "args already set");
+    if (g_command_args.m_nCount == 0)
+    {
+        rtl_uString** ppArgs = static_cast<rtl_uString**>(rtl_allocateZeroMemory (argc * sizeof(rtl_uString*)));
+        if (ppArgs != nullptr)
+        {
+            rtl_TextEncoding encoding = osl_getThreadTextEncoding();
+            for (int i = 0; i < argc; i++)
+            {
+                rtl_string2UString (
+                    &(ppArgs[i]),
+                    argv[i], rtl_str_getLength (argv[i]), encoding,
+                    OSTRING_TO_OUSTRING_CVTFLAGS);
+            }
+            if (ppArgs[0] != nullptr)
+            {
+#if HAVE_FEATURE_MACOSX_SANDBOX
+                // If we are called with a relative path in argv[0] in a sandboxed process
+                // osl::realpath() fails. So just use bootstrap_getExecutableFile() instead.
+                // Somewhat silly to use argv[0] and tediously figure out the absolute path from it
+                // anyway.
+                bootstrap_getExecutableFile(&ppArgs[0]);
+                OUString pArg0(ppArgs[0]);
+                osl_getFileURLFromSystemPath (pArg0.pData, &(ppArgs[0]));
+#else
+#if !defined(ANDROID) && !defined(IOS) // No use searching PATH on Android or iOS
+                /* see @ osl_getExecutableFile(). */
+                if (rtl_ustr_indexOfChar (rtl_uString_getStr(ppArgs[0]), '/') == -1)
+                {
+                    const OUString PATH ("PATH");
+
+                    rtl_uString * pSearchPath = nullptr;
+                    osl_getEnvironment (PATH.pData, &pSearchPath);
+                    if (pSearchPath)
+                    {
+                        rtl_uString * pSearchResult = nullptr;
+                        osl_searchPath (ppArgs[0], pSearchPath, &pSearchResult);
+                        if (pSearchResult)
+                        {
+                            rtl_uString_assign (&(ppArgs[0]), pSearchResult);
+                            rtl_uString_release (pSearchResult);
+                        }
+                        rtl_uString_release (pSearchPath);
+                    }
+                }
+#endif
+                OUString pArg0;
+                if (osl::realpath (OUString::unacquired(&ppArgs[0]), pArg0))
+                {
+                    osl_getFileURLFromSystemPath (pArg0.pData, &(ppArgs[0]));
+                }
+#endif // !HAVE_FEATURE_MACOSX_SANDBOX
+            }
+            g_command_args.m_nCount = argc;
+            g_command_args.m_ppArgs = ppArgs;
+        }
+    }
+    pthread_mutex_unlock (&(g_command_args.m_mutex));
+}
+
+oslProcessError SAL_CALL osl_getEnvironment(rtl_uString* pustrEnvVar, rtl_uString** ppustrValue)
+{
+    oslProcessError  result   = osl_Process_E_NotFound;
+    rtl_TextEncoding encoding = osl_getThreadTextEncoding();
+    rtl_String* pstr_env_var  = nullptr;
+
+    OSL_PRECOND(pustrEnvVar, "osl_getEnvironment(): Invalid parameter");
+    OSL_PRECOND(ppustrValue, "osl_getEnvironment(): Invalid parameter");
+
+    rtl_uString2String(
+        &pstr_env_var,
+        rtl_uString_getStr(pustrEnvVar), rtl_uString_getLength(pustrEnvVar), encoding,
+        OUSTRING_TO_OSTRING_CVTFLAGS);
+    if (pstr_env_var != nullptr)
+    {
+        const char* p_env_var = getenv (rtl_string_getStr (pstr_env_var));
+        if (p_env_var != nullptr)
+        {
+            rtl_string2UString(
+                ppustrValue,
+                p_env_var, strlen(p_env_var), encoding,
+                OSTRING_TO_OUSTRING_CVTFLAGS);
+            OSL_ASSERT(*ppustrValue != nullptr);
+
+            result = osl_Process_E_None;
+        }
+        rtl_string_release(pstr_env_var);
+    }
+
+    return result;
+}
+
+oslProcessError SAL_CALL osl_setEnvironment(rtl_uString* pustrEnvVar, rtl_uString* pustrValue)
+{
+    oslProcessError  result   = osl_Process_E_Unknown;
+    rtl_TextEncoding encoding = osl_getThreadTextEncoding();
+    rtl_String* pstr_env_var  = nullptr;
+    rtl_String* pstr_val  = nullptr;
+
+    OSL_PRECOND(pustrEnvVar, "osl_setEnvironment(): Invalid parameter");
+    OSL_PRECOND(pustrValue, "osl_setEnvironment(): Invalid parameter");
+
+    rtl_uString2String(
+        &pstr_env_var,
+        rtl_uString_getStr(pustrEnvVar), rtl_uString_getLength(pustrEnvVar), encoding,
+        OUSTRING_TO_OSTRING_CVTFLAGS);
+
+    rtl_uString2String(
+        &pstr_val,
+        rtl_uString_getStr(pustrValue), rtl_uString_getLength(pustrValue), encoding,
+        OUSTRING_TO_OSTRING_CVTFLAGS);
+
+    if (pstr_env_var != nullptr && pstr_val != nullptr)
+    {
+#if defined (__sun)
+        rtl_String * pBuffer = NULL;
+
+        sal_Int32 nCapacity = rtl_stringbuffer_newFromStringBuffer( &pBuffer,
+            rtl_string_getLength(pstr_env_var) + rtl_string_getLength(pstr_val) + 1,
+            pstr_env_var );
+        rtl_stringbuffer_insert( &pBuffer, &nCapacity, pBuffer->length, "=", 1);
+        rtl_stringbuffer_insert( &pBuffer, &nCapacity, pBuffer->length,
+            rtl_string_getStr(pstr_val), rtl_string_getLength(pstr_val) );
+
+        rtl_string_acquire(pBuffer); // argument to putenv must leak on success
+
+        if (putenv(rtl_string_getStr(pBuffer)) == 0)
+            result = osl_Process_E_None;
+        else
+            rtl_string_release(pBuffer);
+#else
+        if (setenv(rtl_string_getStr(pstr_env_var), rtl_string_getStr(pstr_val), 1) == 0)
+            result = osl_Process_E_None;
+#endif
+    }
+
+    if (pstr_val)
+        rtl_string_release(pstr_val);
+
+    if (pstr_env_var != nullptr)
+        rtl_string_release(pstr_env_var);
+
+    return result;
+}
+
+oslProcessError SAL_CALL osl_clearEnvironment(rtl_uString* pustrEnvVar)
+{
+    oslProcessError  result   = osl_Process_E_Unknown;
+    rtl_TextEncoding encoding = osl_getThreadTextEncoding();
+    rtl_String* pstr_env_var  = nullptr;
+
+    OSL_PRECOND(pustrEnvVar, "osl_setEnvironment(): Invalid parameter");
+
+    rtl_uString2String(
+        &pstr_env_var,
+        rtl_uString_getStr(pustrEnvVar), rtl_uString_getLength(pustrEnvVar), encoding,
+        OUSTRING_TO_OSTRING_CVTFLAGS);
+
+    if (pstr_env_var)
+    {
+#if defined (__sun)
+        rtl_String * pBuffer = NULL;
+
+        sal_Int32 nCapacity = rtl_stringbuffer_newFromStringBuffer( &pBuffer,
+            rtl_string_getLength(pstr_env_var) + 1, pstr_env_var );
+        rtl_stringbuffer_insert( &pBuffer, &nCapacity, pBuffer->length, "=", 1);
+
+        rtl_string_acquire(pBuffer); // argument to putenv must leak on success
+
+        if (putenv(rtl_string_getStr(pBuffer)) == 0)
+            result = osl_Process_E_None;
+        else
+            rtl_string_release(pBuffer);
+#elif (defined(MACOSX) || defined(NETBSD) || defined(FREEBSD))
+        // MacOSX baseline is 10.4, which has an old-school void return
+        // for unsetenv.
+        // See: http://developer.apple.com/mac/library/documentation/Darwin/Reference/ManPages/10.4/man3/unsetenv.3.html?useVersion=10.4
+        unsetenv(rtl_string_getStr(pstr_env_var));
+        result = osl_Process_E_None;
+#else
+        if (unsetenv(rtl_string_getStr(pstr_env_var)) == 0)
+            result = osl_Process_E_None;
+#endif
+        rtl_string_release(pstr_env_var);
+    }
+
+    return result;
+}
+
+oslProcessError SAL_CALL osl_getProcessWorkingDir(rtl_uString **ppustrWorkingDir)
+{
+    oslProcessError result = osl_Process_E_Unknown;
+    char buffer[PATH_MAX];
+
+    OSL_PRECOND(ppustrWorkingDir, "osl_getProcessWorkingDir(): Invalid parameter");
+
+    if (getcwd (buffer, sizeof(buffer)) != nullptr)
+    {
+        rtl_uString* ustrTmp = nullptr;
+
+        rtl_string2UString(
+            &ustrTmp,
+            buffer, strlen(buffer), osl_getThreadTextEncoding(),
+            OSTRING_TO_OUSTRING_CVTFLAGS);
+        if (ustrTmp != nullptr)
+        {
+            if (osl_getFileURLFromSystemPath (ustrTmp, ppustrWorkingDir) == osl_File_E_None)
+                result = osl_Process_E_None;
+            rtl_uString_release (ustrTmp);
+        }
+    }
+
+    return result;
+}
+
+namespace {
+
+struct ProcessLocale_Impl
+{
+    pthread_mutex_t m_mutex;
+    rtl_Locale *    m_pLocale;
+};
+
+}
+
+static struct ProcessLocale_Impl g_process_locale =
+{
+    PTHREAD_MUTEX_INITIALIZER,
+    nullptr
+};
+
+oslProcessError SAL_CALL osl_getProcessLocale( rtl_Locale ** ppLocale )
+{
+    oslProcessError result = osl_Process_E_Unknown;
+    OSL_PRECOND(ppLocale, "osl_getProcessLocale(): Invalid parameter.");
+    if (ppLocale)
+    {
+        pthread_mutex_lock(&(g_process_locale.m_mutex));
+
+        if (g_process_locale.m_pLocale == nullptr)
+            imp_getProcessLocale (&(g_process_locale.m_pLocale));
+        *ppLocale = g_process_locale.m_pLocale;
+        result = osl_Process_E_None;
+
+        pthread_mutex_unlock (&(g_process_locale.m_mutex));
+    }
+    return result;
+}
+
+oslProcessError SAL_CALL osl_setProcessLocale( rtl_Locale * pLocale )
+{
+    OSL_PRECOND(pLocale, "osl_setProcessLocale(): Invalid parameter.");
+
+    pthread_mutex_lock(&(g_process_locale.m_mutex));
+    g_process_locale.m_pLocale = pLocale;
+    pthread_mutex_unlock (&(g_process_locale.m_mutex));
+
+    return osl_Process_E_None;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/profile.cxx b/sal/osl/unx/profile.cxx
new file mode 100644
index 000000000..354fe626f
--- /dev/null
+++ b/sal/osl/unx/profile.cxx
@@ -0,0 +1,1866 @@
+/* -*- 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 "system.hxx"
+#include "readwrite_helper.hxx"
+#include "file_url.hxx"
+#include "unixerrnostring.hxx"
+
+#include <osl/diagnose.h>
+#include <osl/profile.h>
+#include <osl/process.h>
+#include <osl/thread.h>
+#include <rtl/alloc.h>
+#include <sal/log.hxx>
+
+#define LINES_INI       32
+#define LINES_ADD       10
+#define SECTIONS_INI    5
+#define SECTIONS_ADD    3
+#define ENTRIES_INI     5
+#define ENTRIES_ADD     3
+
+#define STR_INI_BOOLYES     "yes"
+#define STR_INI_BOOLON      "on"
+#define STR_INI_BOOLONE     "1"
+#define STR_INI_BOOLNO      "no"
+#define STR_INI_BOOLOFF     "off"
+#define STR_INI_BOOLZERO    "0"
+
+#define FLG_USER            0x00FF
+#define FLG_AUTOOPEN        0x0100
+#define FLG_MODIFIED        0x0200
+
+#define DEFAULT_PMODE   (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
+
+typedef time_t  osl_TStamp;
+
+namespace {
+
+enum osl_TLockMode
+{
+    un_lock, read_lock, write_lock
+};
+
+struct osl_TFile
+{
+    int     m_Handle;
+    char*   m_pReadPtr;
+    char    m_ReadBuf[512];
+    char*   m_pWriteBuf;
+    sal_uInt32  m_nWriteBufLen;
+    sal_uInt32  m_nWriteBufFree;
+};
+
+struct osl_TProfileEntry
+{
+    sal_uInt32  m_Line;
+    sal_uInt32  m_Offset;
+    sal_uInt32  m_Len;
+};
+
+struct osl_TProfileSection
+{
+    sal_uInt32  m_Line;
+    sal_uInt32  m_Offset;
+    sal_uInt32  m_Len;
+    sal_uInt32  m_NoEntries;
+    sal_uInt32  m_MaxEntries;
+    osl_TProfileEntry*  m_Entries;
+};
+
+/* Profile-data structure hidden behind oslProfile: */
+struct osl_TProfileImpl
+{
+    sal_uInt32  m_Flags;
+    osl_TFile*  m_pFile;
+    osl_TStamp  m_Stamp;
+    char    m_FileName[PATH_MAX + 1];
+    sal_uInt32  m_NoLines;
+    sal_uInt32  m_MaxLines;
+    sal_uInt32  m_NoSections;
+    sal_uInt32  m_MaxSections;
+    char**  m_Lines;
+    osl_TProfileSection* m_Sections;
+    pthread_mutex_t m_AccessLock;
+    bool        m_bIsValid;
+};
+
+}
+
+static osl_TFile* openFileImpl(const char* pszFilename, oslProfileOption ProfileFlags);
+static osl_TStamp closeFileImpl(osl_TFile* pFile, oslProfileOption Flags);
+static bool   OslProfile_lockFile(const osl_TFile* pFile, osl_TLockMode eMode);
+static bool   OslProfile_rewindFile(osl_TFile* pFile, bool bTruncate);
+static osl_TStamp OslProfile_getFileStamp(osl_TFile* pFile);
+
+static char*   OslProfile_getLine(osl_TFile* pFile);
+static bool   OslProfile_putLine(osl_TFile* pFile, const char *pszLine);
+static char* stripBlanks(char* String, sal_uInt32* pLen);
+static char* addLine(osl_TProfileImpl* pProfile, const char* Line);
+static char* insertLine(osl_TProfileImpl* pProfile, const char* Line, sal_uInt32 LineNo);
+static void removeLine(osl_TProfileImpl* pProfile, sal_uInt32 LineNo);
+static void setEntry(osl_TProfileImpl* pProfile, osl_TProfileSection* pSection,
+                     sal_uInt32 NoEntry, sal_uInt32 Line,
+                     char* Entry, sal_uInt32 Len);
+static bool addEntry(osl_TProfileImpl* pProfile, osl_TProfileSection *pSection,
+                     int Line, char* Entry, sal_uInt32 Len);
+static void removeEntry(osl_TProfileSection *pSection, sal_uInt32 NoEntry);
+static bool addSection(osl_TProfileImpl* pProfile, int Line, const char* Section, sal_uInt32 Len);
+static void removeSection(osl_TProfileImpl* pProfile, osl_TProfileSection *pSection);
+static osl_TProfileSection* findEntry(osl_TProfileImpl* pProfile, const char* Section,
+                                      const char* Entry, sal_uInt32 *pNoEntry);
+static bool loadProfile(osl_TFile* pFile, osl_TProfileImpl* pProfile);
+static bool storeProfile(osl_TProfileImpl* pProfile, bool bCleanup);
+static osl_TProfileImpl* acquireProfile(oslProfile Profile, bool bWriteable);
+static bool releaseProfile(osl_TProfileImpl* pProfile);
+
+static bool writeProfileImpl (osl_TFile* pFile);
+static osl_TFile* osl_openTmpProfileImpl(osl_TProfileImpl*);
+static bool osl_ProfileSwapProfileNames(osl_TProfileImpl*);
+static void osl_ProfileGenerateExtension(const char* pszFileName, const char* pszExtension, char* pszTmpName, int BufferMaxLen);
+static oslProfile osl_psz_openProfile(const char *pszProfileName, oslProfileOption Flags);
+
+oslProfile SAL_CALL osl_openProfile(rtl_uString *ustrProfileName, oslProfileOption Options)
+{
+    char profilePath[PATH_MAX] = "";
+    return
+        (ustrProfileName == nullptr
+         || ustrProfileName->buffer[0] == 0
+         || (FileURLToPath(profilePath, PATH_MAX, ustrProfileName)
+             == osl_File_E_None))
+        ? osl_psz_openProfile(profilePath, Options)
+        : nullptr;
+}
+
+static oslProfile osl_psz_openProfile(const char *pszProfileName, oslProfileOption Flags)
+{
+    osl_TFile*        pFile;
+    osl_TProfileImpl* pProfile;
+    bool bRet = false;
+
+    if ( ( pFile = openFileImpl(pszProfileName, Flags ) ) == nullptr )
+    {
+        return nullptr;
+    }
+
+    pProfile = static_cast<osl_TProfileImpl*>(calloc(1, sizeof(osl_TProfileImpl)));
+
+    if ( pProfile == nullptr )
+    {
+        closeFileImpl(pFile, Flags);
+        return nullptr;
+    }
+
+    pProfile->m_Flags = Flags & FLG_USER;
+
+    if ( Flags & ( osl_Profile_READLOCK | osl_Profile_WRITELOCK | osl_Profile_FLUSHWRITE ) )
+    {
+        pProfile->m_pFile = pFile;
+    }
+
+    pthread_mutex_init(&(pProfile->m_AccessLock),PTHREAD_MUTEXATTR_DEFAULT);
+    pProfile->m_bIsValid = true;
+
+    pProfile->m_Stamp = OslProfile_getFileStamp(pFile);
+    bRet=loadProfile(pFile, pProfile);
+    bRet &= realpath(pszProfileName, pProfile->m_FileName) != nullptr;
+    SAL_WARN_IF(!bRet, "sal.osl", "realpath(pszProfileName, pProfile->m_FileName) != NULL ==> false");
+
+    if (pProfile->m_pFile == nullptr)
+        closeFileImpl(pFile,pProfile->m_Flags);
+
+    // coverity[leaked_storage] - pFile is not leaked
+    return pProfile;
+}
+
+sal_Bool SAL_CALL osl_closeProfile(oslProfile Profile)
+{
+    osl_TProfileImpl* pProfile = static_cast<osl_TProfileImpl*>(Profile);
+    osl_TProfileImpl* pTmpProfile;
+
+    if ( Profile == nullptr )
+    {
+        return false;
+    }
+
+    pthread_mutex_lock(&(pProfile->m_AccessLock));
+
+    if ( !pProfile->m_bIsValid )
+    {
+        SAL_WARN("sal.osl", "!pProfile->m_bIsValid");
+        pthread_mutex_unlock(&(pProfile->m_AccessLock));
+
+        return false;
+    }
+
+    pProfile->m_bIsValid = false;
+
+    if ( ! ( pProfile->m_Flags & osl_Profile_READLOCK ) && ( pProfile->m_Flags & FLG_MODIFIED ) )
+    {
+        pTmpProfile = acquireProfile(Profile, true);
+
+        if ( pTmpProfile != nullptr )
+        {
+            bool bRet = storeProfile(pTmpProfile, true);
+            SAL_WARN_IF(!bRet, "sal.osl", "storeProfile(pTmpProfile, true) ==> false");
+        }
+    }
+    else
+    {
+        pTmpProfile = acquireProfile(Profile, false);
+    }
+
+    if ( pTmpProfile == nullptr )
+    {
+        pthread_mutex_unlock(&(pProfile->m_AccessLock));
+
+        SAL_INFO("sal.osl", "Out osl_closeProfile [pProfile==0]");
+        return false;
+    }
+
+    pProfile = pTmpProfile;
+
+    if (pProfile->m_pFile != nullptr)
+        closeFileImpl(pProfile->m_pFile,pProfile->m_Flags);
+
+    pProfile->m_pFile = nullptr;
+    pProfile->m_FileName[0] = '\0';
+
+    /* release whole profile data types memory */
+    if ( pProfile->m_NoLines > 0)
+    {
+        unsigned int idx=0;
+        if ( pProfile->m_Lines != nullptr )
+        {
+            for ( idx = 0 ; idx < pProfile->m_NoLines ; ++idx)
+            {
+                if ( pProfile->m_Lines[idx] != nullptr )
+                {
+                    free(pProfile->m_Lines[idx]);
+                    pProfile->m_Lines[idx]=nullptr;
+                }
+            }
+            free(pProfile->m_Lines);
+            pProfile->m_Lines=nullptr;
+        }
+        if ( pProfile->m_Sections != nullptr )
+        {
+            /*osl_TProfileSection* pSections=pProfile->m_Sections;*/
+            for ( idx = 0 ; idx < pProfile->m_NoSections ; ++idx )
+            {
+                if ( pProfile->m_Sections[idx].m_Entries != nullptr )
+                {
+                    free(pProfile->m_Sections[idx].m_Entries);
+                    pProfile->m_Sections[idx].m_Entries=nullptr;
+                }
+            }
+            free(pProfile->m_Sections);
+            pProfile->m_Sections=nullptr;
+        }
+    }
+
+    pthread_mutex_unlock(&(pProfile->m_AccessLock));
+
+    pthread_mutex_destroy(&(pProfile->m_AccessLock));
+
+    free(pProfile);
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_flushProfile(oslProfile Profile)
+{
+    osl_TProfileImpl* pProfile = static_cast<osl_TProfileImpl*>(Profile);
+    osl_TFile* pFile;
+    bool bRet = false;
+
+    if ( pProfile == nullptr )
+    {
+        return false;
+    }
+
+    pthread_mutex_lock(&(pProfile->m_AccessLock));
+
+    if ( !pProfile->m_bIsValid )
+    {
+        SAL_WARN_IF(!pProfile->m_bIsValid, "sal.osl", "!pProfile->m_bIsValid");
+        pthread_mutex_unlock(&(pProfile->m_AccessLock));
+        return false;
+    }
+
+    pFile = pProfile->m_pFile;
+    if ( pFile == nullptr || pFile->m_Handle < 0 )
+    {
+        pthread_mutex_unlock(&(pProfile->m_AccessLock));
+
+        return false;
+    }
+
+    if ( pProfile->m_Flags & FLG_MODIFIED )
+    {
+        bRet = storeProfile(pProfile, false);
+        SAL_WARN_IF(!bRet, "sal.osl", "storeProfile(pProfile, false) ==> false");
+    }
+
+    pthread_mutex_unlock(&(pProfile->m_AccessLock));
+    return bRet;
+}
+
+static bool writeProfileImpl(osl_TFile* pFile)
+{
+    if ( pFile == nullptr || pFile->m_Handle < 0 || pFile->m_pWriteBuf == nullptr )
+    {
+        return false;
+    }
+
+    SAL_WARN_IF(
+        (strlen(pFile->m_pWriteBuf)
+         != pFile->m_nWriteBufLen - pFile->m_nWriteBufFree),
+        "sal.osl",
+        strlen(pFile->m_pWriteBuf) << " != "
+            << (pFile->m_nWriteBufLen - pFile->m_nWriteBufFree));
+
+    if ( !safeWrite(pFile->m_Handle, pFile->m_pWriteBuf, pFile->m_nWriteBufLen - pFile->m_nWriteBufFree) )
+    {
+        SAL_INFO("sal.osl", "write failed: " << UnixErrnoString(errno));
+        return false;
+    }
+
+    free(pFile->m_pWriteBuf);
+    pFile->m_pWriteBuf=nullptr;
+    pFile->m_nWriteBufLen=0;
+    pFile->m_nWriteBufFree=0;
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_readProfileString(oslProfile Profile,
+                                        const char* pszSection,
+                                        const char* pszEntry,
+                                        char* pszString,
+                                        sal_uInt32 MaxLen,
+                                        const char* pszDefault)
+{
+    sal_uInt32    NoEntry;
+    char* pStr=nullptr;
+    osl_TProfileImpl*    pProfile=nullptr;
+    osl_TProfileImpl*    pTmpProfile=nullptr;
+    bool bRet = false;
+
+    pTmpProfile = static_cast<osl_TProfileImpl*>(Profile);
+
+    if ( pTmpProfile == nullptr )
+    {
+        return false;
+    }
+
+    pthread_mutex_lock(&(pTmpProfile->m_AccessLock));
+
+    if ( !pTmpProfile->m_bIsValid )
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return false;
+    }
+
+    pProfile = acquireProfile(Profile, false);
+
+    if ( pProfile == nullptr )
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return false;
+    }
+
+    if (! (pProfile->m_Flags & osl_Profile_SYSTEM))
+    {
+        osl_TProfileSection* pSec = findEntry(pProfile, pszSection, pszEntry, &NoEntry);
+        if ((pSec != nullptr) &&
+            (NoEntry < pSec->m_NoEntries) &&
+            ((pStr = strchr(pProfile->m_Lines[pSec->m_Entries[NoEntry].m_Line],
+                            '=')) != nullptr))
+        {
+            pStr++;
+        }
+        else
+        {
+            pStr=const_cast<char*>(pszDefault);
+        }
+
+        if ( pStr != nullptr )
+        {
+            pStr = stripBlanks(pStr, nullptr);
+            MaxLen = (MaxLen - 1 < strlen(pStr)) ? (MaxLen - 1) : strlen(pStr);
+            pStr = stripBlanks(pStr, &MaxLen);
+            strncpy(pszString, pStr, MaxLen);
+            pszString[MaxLen] = '\0';
+        }
+    }
+    else
+    { /* not implemented */ }
+
+    bRet=releaseProfile(pProfile);
+    SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+    if ( pStr == nullptr )
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return false;
+    }
+
+    pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_readProfileBool(oslProfile Profile,
+                                      const char* pszSection,
+                                      const char* pszEntry,
+                                      sal_Bool Default)
+{
+    char Line[32];
+    Line[0] = '\0';
+
+    if (osl_readProfileString(Profile, pszSection, pszEntry, Line, sizeof(Line), ""))
+    {
+        if ((strcasecmp(Line, STR_INI_BOOLYES) == 0) ||
+            (strcasecmp(Line, STR_INI_BOOLON)  == 0) ||
+            (strcasecmp(Line, STR_INI_BOOLONE) == 0))
+            Default = true;
+        else
+            if ((strcasecmp(Line, STR_INI_BOOLNO)   == 0) ||
+                (strcasecmp(Line, STR_INI_BOOLOFF)  == 0) ||
+                (strcasecmp(Line, STR_INI_BOOLZERO) == 0))
+                Default = false;
+    }
+
+    return Default;
+}
+
+sal_uInt32 SAL_CALL osl_readProfileIdent(oslProfile Profile,
+                                         const char* pszSection,
+                                         const char* pszEntry,
+                                         sal_uInt32 FirstId,
+                                         const char* Strings[],
+                                         sal_uInt32 Default)
+{
+    sal_uInt32  i;
+    char    Line[256];
+    Line[0] = '\0';
+
+    if (osl_readProfileString(Profile, pszSection, pszEntry, Line, sizeof(Line), ""))
+    {
+        i = 0;
+        while (Strings[i] != nullptr)
+        {
+            if (strcasecmp(Line, Strings[i]) == 0)
+            {
+                Default = i + FirstId;
+                break;
+            }
+            i++;
+        }
+    }
+
+    return Default;
+}
+
+sal_Bool SAL_CALL osl_writeProfileString(oslProfile Profile,
+                                         const char* pszSection,
+                                         const char* pszEntry,
+                                         const char* pszString)
+{
+    bool bRet = false;
+    sal_uInt32    NoEntry;
+    char* pStr;
+    char*       Line = nullptr;
+    osl_TProfileImpl*    pProfile = nullptr;
+    osl_TProfileImpl*    pTmpProfile = static_cast<osl_TProfileImpl*>(Profile);
+
+    if ( pTmpProfile == nullptr )
+    {
+        return false;
+    }
+
+    pthread_mutex_lock(&(pTmpProfile->m_AccessLock));
+
+    if ( !pTmpProfile->m_bIsValid )
+    {
+        SAL_WARN_IF(!pTmpProfile->m_bIsValid, "sal.osl", "!pTmpProfile->m_bIsValid");
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return false;
+    }
+
+    pProfile=acquireProfile(Profile, true);
+
+    if (pProfile == nullptr)
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return false;
+    }
+
+    Line = static_cast<char*>(malloc(strlen(pszEntry)+strlen(pszString)+48));
+
+    if (! (pProfile->m_Flags & osl_Profile_SYSTEM))
+    {
+        osl_TProfileSection* pSec;
+        if ((pSec = findEntry(pProfile, pszSection, pszEntry, &NoEntry)) == nullptr)
+        {
+            Line[0] = '\0';
+            addLine(pProfile, Line);
+
+            Line[0] = '[';
+            strcpy(&Line[1], pszSection);
+            Line[1 + strlen(pszSection)] = ']';
+            Line[2 + strlen(pszSection)] = '\0';
+
+            pStr = addLine(pProfile, Line);
+            if ((pStr == nullptr) ||
+                (! addSection(pProfile, pProfile->m_NoLines - 1, &pStr[1], strlen(pszSection))))
+            {
+                bRet=releaseProfile(pProfile);
+                SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+                pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+                free(Line);
+                return false;
+            }
+
+            pSec = &pProfile->m_Sections[pProfile->m_NoSections - 1];
+            NoEntry = pSec->m_NoEntries;
+        }
+
+        Line[0] = '\0';
+        strcpy(&Line[0], pszEntry);
+        Line[0 + strlen(pszEntry)] = '=';
+        strcpy(&Line[1 + strlen(pszEntry)], pszString);
+
+        if (NoEntry >= pSec->m_NoEntries)
+        {
+            sal_uInt32  i;
+            if (pSec->m_NoEntries > 0)
+                i = pSec->m_Entries[pSec->m_NoEntries - 1].m_Line + 1;
+            else
+                i = pSec->m_Line + 1;
+
+            pStr = insertLine(pProfile, Line, i);
+            if ((pStr == nullptr) ||
+                (! addEntry(pProfile, pSec, i, pStr, strlen(pszEntry))))
+            {
+                bRet=releaseProfile(pProfile);
+                SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+                pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+                free(Line);
+
+                return false;
+            }
+
+            pProfile->m_Flags |= FLG_MODIFIED;
+        }
+        else
+        {
+            sal_uInt32  i = pSec->m_Entries[NoEntry].m_Line;
+            free(pProfile->m_Lines[i]);
+            pProfile->m_Lines[i] = strdup(Line);
+            setEntry(pProfile, pSec, NoEntry, i, pProfile->m_Lines[i], strlen(pszEntry));
+
+            pProfile->m_Flags |= FLG_MODIFIED;
+        }
+    }
+    else {
+        /* not implemented */
+    }
+
+    bRet = releaseProfile(pProfile);
+    SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+    pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+    if ( Line!= nullptr )
+    {
+        free(Line);
+    }
+
+    return bRet;
+}
+
+sal_Bool SAL_CALL osl_writeProfileBool(oslProfile Profile,
+                                       const char* pszSection,
+                                       const char* pszEntry,
+                                       sal_Bool Value)
+{
+    bool bRet = false;
+
+    if (Value)
+        bRet=osl_writeProfileString(Profile, pszSection, pszEntry, STR_INI_BOOLONE);
+    else
+        bRet=osl_writeProfileString(Profile, pszSection, pszEntry, STR_INI_BOOLZERO);
+
+    return bRet;
+}
+
+sal_Bool SAL_CALL osl_writeProfileIdent(oslProfile Profile,
+                                        const char* pszSection,
+                                        const char* pszEntry,
+                                        sal_uInt32 FirstId,
+                                        const char* Strings[],
+                                        sal_uInt32 Value)
+{
+    int i, n = 0;
+    bool bRet = false;
+
+    while (Strings[n] != nullptr)
+        ++n;
+
+    if ((i = Value - FirstId) >= n)
+        bRet = false;
+    else
+        bRet = osl_writeProfileString(Profile, pszSection, pszEntry, Strings[i]);
+
+    return bRet;
+}
+
+sal_Bool SAL_CALL osl_removeProfileEntry(oslProfile Profile,
+                                         const char *pszSection,
+                                         const char *pszEntry)
+{
+    sal_uInt32    NoEntry;
+    osl_TProfileImpl*    pProfile = nullptr;
+    osl_TProfileImpl*    pTmpProfile = nullptr;
+    bool bRet = false;
+
+    pTmpProfile = static_cast<osl_TProfileImpl*>(Profile);
+
+    if ( pTmpProfile == nullptr )
+    {
+        return false;
+    }
+
+    pthread_mutex_lock(&(pTmpProfile->m_AccessLock));
+
+    if ( !pTmpProfile->m_bIsValid )
+    {
+        SAL_WARN_IF(!pTmpProfile->m_bIsValid, "sal.osl", "!pTmpProfile->m_bIsValid");
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+        return false;
+    }
+
+    pProfile = acquireProfile(Profile, true);
+
+    if (pProfile == nullptr)
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return false;
+    }
+
+    if (! (pProfile->m_Flags & osl_Profile_SYSTEM))
+    {
+        osl_TProfileSection* pSec = findEntry(pProfile, pszSection, pszEntry, &NoEntry);
+        if ((pSec != nullptr) &&
+            (NoEntry < pSec->m_NoEntries))
+        {
+            removeLine(pProfile, pSec->m_Entries[NoEntry].m_Line);
+            removeEntry(pSec, NoEntry);
+            if (pSec->m_NoEntries == 0)
+            {
+                removeLine(pProfile, pSec->m_Line);
+
+                /* remove any empty separation line */
+                if ((pSec->m_Line > 0) && (pProfile->m_Lines[pSec->m_Line - 1][0] == '\0'))
+                    removeLine(pProfile, pSec->m_Line - 1);
+
+                removeSection(pProfile, pSec);
+            }
+
+            pProfile->m_Flags |= FLG_MODIFIED;
+        }
+    }
+    else
+    { /* not implemented */ }
+
+    bRet = releaseProfile(pProfile);
+    SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+    pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+    return bRet;
+}
+
+sal_uInt32 SAL_CALL osl_getProfileSectionEntries(oslProfile Profile,
+                                                 const char *pszSection,
+                                                 char* pszBuffer,
+                                                 sal_uInt32 MaxLen)
+{
+    sal_uInt32    i, n = 0;
+    sal_uInt32    NoEntry;
+    osl_TProfileImpl*    pProfile = nullptr;
+    osl_TProfileImpl*    pTmpProfile = nullptr;
+    bool bRet = false;
+
+    pTmpProfile = static_cast<osl_TProfileImpl*>(Profile);
+
+    if ( pTmpProfile == nullptr )
+    {
+        return 0;
+
+    }
+
+    pthread_mutex_lock(&(pTmpProfile->m_AccessLock));
+
+    if ( !pTmpProfile->m_bIsValid )
+    {
+        SAL_WARN_IF(!pTmpProfile->m_bIsValid, "sal.osl", "!pTmpProfile->m_bIsValid"); 
+
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return 0;
+    }
+
+    pProfile = acquireProfile(Profile, false);
+
+    if (pProfile == nullptr)
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return 0;
+    }
+
+    if (! (pProfile->m_Flags & osl_Profile_SYSTEM))
+    {
+        osl_TProfileSection* pSec;
+        if ((pSec = findEntry(pProfile, pszSection, "", &NoEntry)) != nullptr)
+        {
+            if (MaxLen != 0)
+            {
+                for (i = 0; i < pSec->m_NoEntries; i++)
+                {
+                    if ((n + pSec->m_Entries[i].m_Len + 1) < MaxLen)
+                    {
+                        strncpy(&pszBuffer[n], &pProfile->m_Lines[pSec->m_Entries[i].m_Line]
+                                [pSec->m_Entries[i].m_Offset], pSec->m_Entries[i].m_Len);
+                        n += pSec->m_Entries[i].m_Len;
+                        pszBuffer[n++] = '\0';
+                    }
+                    else
+                        break;
+
+                }
+
+                pszBuffer[n++] = '\0';
+            }
+            else
+            {
+                for (i = 0; i < pSec->m_NoEntries; i++)
+                    n += pSec->m_Entries[i].m_Len + 1;
+
+                n += 1;
+            }
+        }
+        else
+            n = 0;
+    }
+    else {
+        /* not implemented */
+    }
+
+    bRet=releaseProfile(pProfile);
+    SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+    pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+    return n;
+}
+
+sal_uInt32 SAL_CALL osl_getProfileSections(oslProfile Profile,
+                                           char* pszBuffer,
+                                           sal_uInt32 MaxLen)
+{
+    sal_uInt32    i, n = 0;
+    osl_TProfileImpl*    pProfile = nullptr;
+    osl_TProfileImpl*    pTmpProfile = nullptr;
+    bool bRet = false;
+
+    pTmpProfile = static_cast<osl_TProfileImpl*>(Profile);
+
+    if ( pTmpProfile == nullptr )
+    {
+        return 0;
+    }
+
+    pthread_mutex_lock(&(pTmpProfile->m_AccessLock));
+
+    if ( !pTmpProfile->m_bIsValid )
+    {
+        SAL_WARN_IF(!pTmpProfile->m_bIsValid, "sal.osl", "!pTmpProfile->m_bIsValid"); 
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return 0;
+    }
+
+    pProfile = acquireProfile(Profile, false);
+
+    if (pProfile == nullptr)
+    {
+        pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+        return 0;
+    }
+
+    if (! (pProfile->m_Flags & osl_Profile_SYSTEM))
+    {
+        if (MaxLen != 0)
+        {
+            for (i = 0; i < pProfile->m_NoSections; i++)
+            {
+                osl_TProfileSection* pSec = &pProfile->m_Sections[i];
+
+                if ((n + pSec->m_Len + 1) < MaxLen)
+                {
+                    strncpy(&pszBuffer[n], &pProfile->m_Lines[pSec->m_Line][pSec->m_Offset],
+                            pSec->m_Len);
+                    n += pSec->m_Len;
+                    pszBuffer[n++] = '\0';
+                }
+                else
+                    break;
+            }
+
+            pszBuffer[n++] = '\0';
+        }
+        else
+        {
+            for (i = 0; i < pProfile->m_NoSections; i++)
+                n += pProfile->m_Sections[i].m_Len + 1;
+
+            n += 1;
+        }
+    }
+    else
+    { /* not implemented */ }
+
+    bRet=releaseProfile(pProfile);
+    SAL_WARN_IF(!bRet, "sal.osl", "releaseProfile(pProfile) ==> false");
+
+    pthread_mutex_unlock(&(pTmpProfile->m_AccessLock));
+
+    return n;
+}
+
+static osl_TStamp OslProfile_getFileStamp(osl_TFile* pFile)
+{
+    struct stat status;
+
+    if ( (pFile->m_Handle < 0) || (fstat(pFile->m_Handle, &status) < 0) )
+    {
+        return 0;
+    }
+
+    return status.st_mtime;
+}
+
+static bool OslProfile_lockFile(const osl_TFile* pFile, osl_TLockMode eMode)
+{
+    struct flock lock;
+    static bool const bLockingDisabled = getenv( "STAR_PROFILE_LOCKING_DISABLED" ) != nullptr;
+
+    if (pFile->m_Handle < 0)
+    {
+        return false;
+    }
+
+    if ( bLockingDisabled )
+    {
+        return true;
+    }
+
+    lock.l_start  = 0;
+    lock.l_whence = SEEK_SET;
+    lock.l_len    = 0;
+
+    switch (eMode)
+    {
+        case un_lock:
+            lock.l_type = F_UNLCK;
+            break;
+
+        case read_lock:
+            lock.l_type = F_RDLCK;
+            break;
+
+        case write_lock:
+            lock.l_type = F_WRLCK;
+            break;
+    }
+
+#ifndef MACOSX
+    if ( fcntl(pFile->m_Handle, F_SETLKW, &lock) == -1 )
+#else
+    /* Mac OSX will return ENOTSUP for webdav drives so we should ignore it */
+    if ( fcntl(pFile->m_Handle, F_SETLKW, &lock) == -1 && errno != ENOTSUP )
+#endif
+    {
+        SAL_INFO("sal.osl", "fcntl failed: " << UnixErrnoString(errno));
+        return false;
+    }
+
+    return true;
+}
+
+static osl_TFile* openFileImpl(const char* pszFilename, oslProfileOption ProfileFlags )
+{
+    int        Flags;
+    osl_TFile* pFile = static_cast<osl_TFile*>(calloc(1, sizeof(osl_TFile)));
+    bool       bWriteable = false;
+
+    if ( ProfileFlags & ( osl_Profile_WRITELOCK | osl_Profile_FLUSHWRITE ) )
+    {
+        bWriteable = true;
+    }
+
+    if (! bWriteable)
+    {
+        pFile->m_Handle = open(pszFilename, O_RDONLY);
+
+        if (pFile->m_Handle == -1)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "open(" << pszFilename << ",O_RDONLY): " << UnixErrnoString(e));
+        }
+        else
+            SAL_INFO("sal.file", "open(" << pszFilename << ",O_RDONLY) => " << pFile->m_Handle);
+
+        /* mfe: argghh!!! do not check if the file could be opened */
+        /*      default mode expects it that way!!!                 */
+    }
+    else
+    {
+        if (((pFile->m_Handle = open(pszFilename, O_RDWR | O_CREAT | O_EXCL, DEFAULT_PMODE)) < 0) &&
+            ((pFile->m_Handle = open(pszFilename, O_RDWR)) < 0))
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "open(" << pszFilename << ",...): " << UnixErrnoString(e));
+            free(pFile);
+            return nullptr;
+        }
+        else
+            SAL_INFO("sal.file", "open(" << pszFilename << ",...) => " << pFile->m_Handle);
+    }
+
+    /* set close-on-exec flag */
+    if ((Flags = fcntl(pFile->m_Handle, F_GETFD, 0)) != -1)
+    {
+        Flags |= FD_CLOEXEC;
+        int e = fcntl(pFile->m_Handle, F_SETFD, Flags);
+        SAL_INFO_IF(
+            e != 0, "sal.osl",
+            "fcntl to set FD_CLOEXEC failed for " << pszFilename);
+    }
+
+    pFile->m_pWriteBuf=nullptr;
+    pFile->m_nWriteBufFree=0;
+    pFile->m_nWriteBufLen=0;
+
+    if ( ProfileFlags & (osl_Profile_WRITELOCK | osl_Profile_READLOCK ) )
+    {
+        OslProfile_lockFile(pFile, bWriteable ? write_lock : read_lock);
+    }
+
+    return pFile;
+}
+
+static osl_TStamp closeFileImpl(osl_TFile* pFile, oslProfileOption Flags)
+{
+    osl_TStamp stamp = 0;
+
+    if ( pFile == nullptr )
+    {
+        return stamp;
+    }
+
+    if ( pFile->m_Handle >= 0 )
+    {
+        stamp = OslProfile_getFileStamp(pFile);
+
+        if ( Flags & (osl_Profile_WRITELOCK | osl_Profile_READLOCK ) )
+        {
+            OslProfile_lockFile(pFile, un_lock);
+        }
+
+        close(pFile->m_Handle);
+        SAL_INFO("sal.file", "close(" << pFile->m_Handle << ")");
+        pFile->m_Handle = -1;
+    }
+
+    if ( pFile->m_pWriteBuf )
+    {
+        free(pFile->m_pWriteBuf);
+    }
+
+    free(pFile);
+
+    return stamp;
+}
+
+static bool OslProfile_rewindFile(osl_TFile* pFile, bool bTruncate)
+{
+    bool bRet = true;
+
+    if (pFile->m_Handle >= 0)
+    {
+        pFile->m_pReadPtr  = pFile->m_ReadBuf + sizeof(pFile->m_ReadBuf);
+
+        bRet = (lseek(pFile->m_Handle, SEEK_SET, 0) == 0);
+
+        if (bTruncate)
+        {
+            bRet &= (ftruncate(pFile->m_Handle, 0) == 0);
+        }
+
+    }
+
+    return bRet;
+}
+
+static char* OslProfile_getLine(osl_TFile* pFile)
+{
+    int   Max, Free, nLineBytes = 0;
+    char* pChr;
+    char* pLine = nullptr;
+    char* pNewLine;
+
+    if ( pFile == nullptr )
+    {
+        return nullptr;
+    }
+
+    if (pFile->m_Handle < 0)
+        return nullptr;
+
+    do
+    {
+        int Bytes = sizeof(pFile->m_ReadBuf) - (pFile->m_pReadPtr - pFile->m_ReadBuf);
+
+        if (Bytes <= 1)
+        {
+            /* refill buffer */
+            memcpy(pFile->m_ReadBuf, pFile->m_pReadPtr, Bytes);
+            pFile->m_pReadPtr = pFile->m_ReadBuf;
+
+            Free = sizeof(pFile->m_ReadBuf) - Bytes;
+
+            if ((Max = read(pFile->m_Handle, &pFile->m_ReadBuf[Bytes], Free)) < 0)
+            {
+                SAL_INFO("sal.osl", "read failed: " << UnixErrnoString(errno));
+
+                if( pLine )
+                    free( pLine );
+                pLine = nullptr;
+                break;
+            }
+
+            if (Max < Free)
+            {
+                 if ((Max == 0) && ! pLine)
+                     break;
+
+                 pFile->m_ReadBuf[Bytes + Max] = '\0';
+            }
+        }
+
+        for (pChr = pFile->m_pReadPtr;
+             (*pChr != '\n') && (*pChr != '\r') && (*pChr != '\0') &&
+             (pChr < (pFile->m_ReadBuf + sizeof(pFile->m_ReadBuf) - 1));
+             pChr++);
+
+        Max = pChr - pFile->m_pReadPtr;
+        pNewLine = static_cast<char*>(malloc( nLineBytes + Max + 1 ));
+        if( pLine )
+        {
+            memcpy( pNewLine, pLine, nLineBytes );
+            free( pLine );
+        }
+        memcpy(pNewLine+nLineBytes, pFile->m_pReadPtr, Max);
+        nLineBytes += Max;
+        pNewLine[ nLineBytes ] = 0;
+        pLine = pNewLine;
+
+        if (pChr < (pFile->m_ReadBuf + sizeof(pFile->m_ReadBuf) - 1))
+        {
+            if (*pChr != '\0')
+            {
+                if ((pChr[0] == '\r') && (pChr[1] == '\n'))
+                    pChr += 2;
+                else
+                    pChr += 1;
+            }
+
+            if ((pChr < (pFile->m_ReadBuf + sizeof(pFile->m_ReadBuf))) &&
+                (*pChr == '\0'))
+                pChr = pFile->m_ReadBuf + sizeof(pFile->m_ReadBuf);
+
+            /* setting Max to -1 indicates terminating read loop */
+            Max = -1;
+        }
+
+        pFile->m_pReadPtr = pChr;
+    }
+    while (Max > 0) ;
+
+    return pLine;
+}
+
+static bool OslProfile_putLine(osl_TFile* pFile, const char *pszLine)
+{
+    unsigned int Len = strlen(pszLine);
+
+    if ( pFile == nullptr || pFile->m_Handle < 0 )
+    {
+        return false;
+    }
+
+    if ( pFile->m_pWriteBuf == nullptr )
+    {
+        pFile->m_pWriteBuf = static_cast<char*>(malloc(Len+3));
+        pFile->m_nWriteBufLen = Len+3;
+        pFile->m_nWriteBufFree = Len+3;
+    }
+    else
+    {
+        if ( pFile->m_nWriteBufFree <= Len + 3 )
+        {
+            char* pTmp;
+
+            pTmp=static_cast<char*>(realloc(pFile->m_pWriteBuf,( ( pFile->m_nWriteBufLen + Len ) * 2) ));
+            if ( pTmp == nullptr )
+            {
+                return false;
+            }
+            pFile->m_pWriteBuf = pTmp;
+            pFile->m_nWriteBufFree = pFile->m_nWriteBufFree + pFile->m_nWriteBufLen + ( 2 * Len );
+            pFile->m_nWriteBufLen = ( pFile->m_nWriteBufLen + Len ) * 2;
+            memset( (pFile->m_pWriteBuf) + ( pFile->m_nWriteBufLen - pFile->m_nWriteBufFree ), 0, pFile->m_nWriteBufFree);
+        }
+    }
+
+    memcpy(pFile->m_pWriteBuf + ( pFile->m_nWriteBufLen - pFile->m_nWriteBufFree ),pszLine,Len+1);
+    pFile->m_pWriteBuf[pFile->m_nWriteBufLen - pFile->m_nWriteBufFree + Len]='\n';
+    pFile->m_pWriteBuf[pFile->m_nWriteBufLen - pFile->m_nWriteBufFree + Len + 1]='\0';
+
+    pFile->m_nWriteBufFree-=Len+1;
+
+    return true;
+}
+
+static char* stripBlanks(char* String, sal_uInt32* pLen)
+{
+    if ( ( pLen != nullptr ) && ( *pLen != 0 ) )
+    {
+        while ((String[*pLen - 1] == ' ') || (String[*pLen - 1] == '\t'))
+            (*pLen)--;
+
+        while ( (*String == ' ') || (*String == '\t') )
+        {
+            String++;
+            (*pLen)--;
+        }
+    }
+    else
+        while ( (*String == ' ') || (*String == '\t') )
+            String++;
+
+    return String;
+}
+
+static char* addLine(osl_TProfileImpl* pProfile, const char* Line)
+{
+    if (pProfile->m_NoLines >= pProfile->m_MaxLines)
+    {
+        if (pProfile->m_Lines == nullptr)
+        {
+            pProfile->m_MaxLines = LINES_INI;
+            pProfile->m_Lines = static_cast<char **>(calloc(pProfile->m_MaxLines, sizeof(char *)));
+        }
+        else
+        {
+            unsigned int idx=0;
+            unsigned int oldmax=pProfile->m_MaxLines;
+
+            pProfile->m_MaxLines += LINES_ADD;
+            pProfile->m_Lines = static_cast<char **>(realloc(pProfile->m_Lines,
+                                                 pProfile->m_MaxLines * sizeof(char *)));
+            for ( idx = oldmax ; idx < pProfile->m_MaxLines ; ++idx )
+            {
+                pProfile->m_Lines[idx]=nullptr;
+            }
+        }
+    }
+    if (pProfile->m_Lines == nullptr)
+    {
+        pProfile->m_NoLines  = 0;
+        pProfile->m_MaxLines = 0;
+        return nullptr;
+    }
+
+    if ( pProfile->m_Lines[pProfile->m_NoLines] != nullptr )
+    {
+        free(pProfile->m_Lines[pProfile->m_NoLines]);
+    }
+    pProfile->m_Lines[pProfile->m_NoLines++] = strdup(Line);
+
+    return pProfile->m_Lines[pProfile->m_NoLines - 1];
+}
+
+static char* insertLine(osl_TProfileImpl* pProfile, const char* Line, sal_uInt32 LineNo)
+{
+    if (pProfile->m_NoLines >= pProfile->m_MaxLines)
+    {
+        if (pProfile->m_Lines == nullptr)
+        {
+            pProfile->m_MaxLines = LINES_INI;
+            pProfile->m_Lines = static_cast<char **>(calloc(pProfile->m_MaxLines, sizeof(char *)));
+        }
+        else
+        {
+            pProfile->m_MaxLines += LINES_ADD;
+            pProfile->m_Lines = static_cast<char **>(realloc(pProfile->m_Lines,
+                                                 pProfile->m_MaxLines * sizeof(char *)));
+
+            memset(&pProfile->m_Lines[pProfile->m_NoLines],
+                0,
+                (pProfile->m_MaxLines - pProfile->m_NoLines - 1) * sizeof(char*));
+        }
+
+        if (pProfile->m_Lines == nullptr)
+        {
+            pProfile->m_NoLines  = 0;
+            pProfile->m_MaxLines = 0;
+            return nullptr;
+        }
+    }
+
+    LineNo = std::min(LineNo, pProfile->m_NoLines);
+
+    if (LineNo < pProfile->m_NoLines)
+    {
+        sal_uInt32 i, n;
+
+        memmove(&pProfile->m_Lines[LineNo + 1], &pProfile->m_Lines[LineNo],
+                (pProfile->m_NoLines - LineNo) * sizeof(char *));
+
+        /* adjust line references */
+        for (i = 0; i < pProfile->m_NoSections; i++)
+        {
+            osl_TProfileSection* pSec = &pProfile->m_Sections[i];
+
+            if (pSec->m_Line >= LineNo)
+                pSec->m_Line++;
+
+            for (n = 0; n < pSec->m_NoEntries; n++)
+                if (pSec->m_Entries[n].m_Line >= LineNo)
+                    pSec->m_Entries[n].m_Line++;
+        }
+    }
+
+    pProfile->m_NoLines++;
+
+    pProfile->m_Lines[LineNo] = strdup(Line);
+
+    return pProfile->m_Lines[LineNo];
+}
+
+static void removeLine(osl_TProfileImpl* pProfile, sal_uInt32 LineNo)
+{
+    if (LineNo >= pProfile->m_NoLines)
+        return;
+
+    free(pProfile->m_Lines[LineNo]);
+    pProfile->m_Lines[LineNo]=nullptr;
+    if (pProfile->m_NoLines - LineNo > 1)
+    {
+        sal_uInt32 i, n;
+
+        memmove(&pProfile->m_Lines[LineNo], &pProfile->m_Lines[LineNo + 1],
+                (pProfile->m_NoLines - LineNo - 1) * sizeof(char *));
+
+        memset(&pProfile->m_Lines[pProfile->m_NoLines - 1],
+            0,
+            (pProfile->m_MaxLines - pProfile->m_NoLines) * sizeof(char*));
+
+        /* adjust line references */
+        for (i = 0; i < pProfile->m_NoSections; i++)
+        {
+            osl_TProfileSection* pSec = &pProfile->m_Sections[i];
+
+            if (pSec->m_Line > LineNo)
+                pSec->m_Line--;
+
+            for (n = 0; n < pSec->m_NoEntries; n++)
+                if (pSec->m_Entries[n].m_Line > LineNo)
+                    pSec->m_Entries[n].m_Line--;
+        }
+    }
+    else
+    {
+        pProfile->m_Lines[LineNo] = nullptr;
+    }
+
+    pProfile->m_NoLines--;
+}
+
+static void setEntry(osl_TProfileImpl* pProfile, osl_TProfileSection* pSection,
+                     sal_uInt32 NoEntry, sal_uInt32 Line,
+                     char* Entry, sal_uInt32 Len)
+{
+    Entry = stripBlanks(Entry, &Len);
+    pSection->m_Entries[NoEntry].m_Line   = Line;
+    pSection->m_Entries[NoEntry].m_Offset = Entry - pProfile->m_Lines[Line];
+    pSection->m_Entries[NoEntry].m_Len    = Len;
+}
+
+static bool addEntry(osl_TProfileImpl* pProfile,
+                     osl_TProfileSection *pSection,
+                     int Line, char* Entry,
+                     sal_uInt32 Len)
+{
+    if (pSection != nullptr)
+    {
+        if (pSection->m_NoEntries >= pSection->m_MaxEntries)
+        {
+            if (pSection->m_Entries == nullptr)
+            {
+                pSection->m_MaxEntries = ENTRIES_INI;
+                pSection->m_Entries = static_cast<osl_TProfileEntry *>(malloc(
+                                pSection->m_MaxEntries * sizeof(osl_TProfileEntry)));
+            }
+            else
+            {
+                pSection->m_MaxEntries += ENTRIES_ADD;
+                pSection->m_Entries = static_cast<osl_TProfileEntry *>(realloc(pSection->m_Entries,
+                                pSection->m_MaxEntries * sizeof(osl_TProfileEntry)));
+            }
+
+            if (pSection->m_Entries == nullptr)
+            {
+                pSection->m_NoEntries  = 0;
+                pSection->m_MaxEntries = 0;
+                return false;
+            }
+        }
+
+        pSection->m_NoEntries++;
+
+        Entry = stripBlanks(Entry, &Len);
+        setEntry(pProfile, pSection, pSection->m_NoEntries - 1, Line,
+                 Entry, Len);
+
+        return true;
+    }
+
+    return false;
+}
+
+static void removeEntry(osl_TProfileSection *pSection, sal_uInt32 NoEntry)
+{
+    if (NoEntry >= pSection->m_NoEntries)
+        return;
+
+    if (pSection->m_NoEntries - NoEntry > 1)
+    {
+        memmove(&pSection->m_Entries[NoEntry],
+                &pSection->m_Entries[NoEntry + 1],
+                (pSection->m_NoEntries - NoEntry - 1) * sizeof(osl_TProfileEntry));
+        pSection->m_Entries[pSection->m_NoEntries - 1].m_Line=0;
+        pSection->m_Entries[pSection->m_NoEntries - 1].m_Offset=0;
+        pSection->m_Entries[pSection->m_NoEntries - 1].m_Len=0;
+    }
+
+    pSection->m_NoEntries--;
+
+}
+
+static bool addSection(osl_TProfileImpl* pProfile, int Line, const char* Section, sal_uInt32 Len)
+{
+    if (pProfile->m_NoSections >= pProfile->m_MaxSections)
+    {
+        if (pProfile->m_Sections == nullptr)
+        {
+            pProfile->m_MaxSections = SECTIONS_INI;
+            pProfile->m_Sections = static_cast<osl_TProfileSection *>(calloc(pProfile->m_MaxSections, sizeof(osl_TProfileSection)));
+        }
+        else
+        {
+            unsigned int idx=0;
+            unsigned int oldmax=pProfile->m_MaxSections;
+
+            pProfile->m_MaxSections += SECTIONS_ADD;
+            pProfile->m_Sections = static_cast<osl_TProfileSection *>(realloc(pProfile->m_Sections,
+                                          pProfile->m_MaxSections * sizeof(osl_TProfileSection)));
+            for ( idx = oldmax ; idx < pProfile->m_MaxSections ; ++idx )
+            {
+                pProfile->m_Sections[idx].m_Entries=nullptr;
+            }
+        }
+
+        if (pProfile->m_Sections == nullptr)
+        {
+            pProfile->m_NoSections = 0;
+            pProfile->m_MaxSections = 0;
+            return false;
+        }
+    }
+
+    pProfile->m_NoSections++;
+
+    if ( pProfile->m_Sections[(pProfile->m_NoSections) - 1].m_Entries != nullptr )
+    {
+         free(pProfile->m_Sections[(pProfile->m_NoSections) - 1].m_Entries);
+    }
+    pProfile->m_Sections[pProfile->m_NoSections - 1].m_Entries    = nullptr;
+    pProfile->m_Sections[pProfile->m_NoSections - 1].m_NoEntries  = 0;
+    pProfile->m_Sections[pProfile->m_NoSections - 1].m_MaxEntries = 0;
+
+    pProfile->m_Sections[pProfile->m_NoSections - 1].m_Line = Line;
+    pProfile->m_Sections[pProfile->m_NoSections - 1].m_Offset = Section - pProfile->m_Lines[Line];
+    pProfile->m_Sections[pProfile->m_NoSections - 1].m_Len = Len;
+
+    return true;
+}
+
+static void removeSection(osl_TProfileImpl* pProfile, osl_TProfileSection *pSection)
+{
+    sal_uInt32 Section;
+
+    if ((Section = pSection - pProfile->m_Sections) >= pProfile->m_NoSections)
+        return;
+
+    free (pSection->m_Entries);
+    pSection->m_Entries=nullptr;
+    if (pProfile->m_NoSections - Section > 1)
+    {
+        memmove(&pProfile->m_Sections[Section], &pProfile->m_Sections[Section + 1],
+                (pProfile->m_NoSections - Section - 1) * sizeof(osl_TProfileSection));
+
+        memset(&pProfile->m_Sections[pProfile->m_NoSections - 1],
+               0,
+               (pProfile->m_MaxSections - pProfile->m_NoSections) * sizeof(osl_TProfileSection));
+        pProfile->m_Sections[pProfile->m_NoSections - 1].m_Entries = nullptr;
+    }
+    else
+    {
+        pSection->m_Entries = nullptr;
+    }
+
+    pProfile->m_NoSections--;
+}
+
+static osl_TProfileSection* findEntry(osl_TProfileImpl* pProfile,
+                                      const char* Section,
+                                      const char* Entry,
+                                      sal_uInt32 *pNoEntry)
+{
+    static  sal_uInt32    Sect = 0;
+    sal_uInt32    i, n;
+    sal_uInt32  Len;
+    osl_TProfileSection* pSec=nullptr;
+
+    Len = strlen(Section);
+
+    n = Sect;
+
+    for (i = 0; i < pProfile->m_NoSections; i++)
+    {
+        n %= pProfile->m_NoSections;
+        pSec = &pProfile->m_Sections[n];
+        if ((Len == pSec->m_Len) &&
+            (strncasecmp(Section, &pProfile->m_Lines[pSec->m_Line][pSec->m_Offset], pSec->m_Len)
+             == 0))
+            break;
+        n++;
+    }
+
+    Sect = n;
+
+    if (i < pProfile->m_NoSections)
+    {
+        Len = strlen(Entry);
+
+        *pNoEntry = pSec->m_NoEntries;
+
+        for (i = 0; i < pSec->m_NoEntries; i++)
+        {
+            const char* pStr = &pProfile->m_Lines[pSec->m_Entries[i].m_Line]
+                                     [pSec->m_Entries[i].m_Offset];
+            if ((Len == pSec->m_Entries[i].m_Len) &&
+                (strncasecmp(Entry, pStr, pSec->m_Entries[i].m_Len)
+                 == 0))
+            {
+                *pNoEntry = i;
+                break;
+            }
+        }
+    }
+    else
+        pSec = nullptr;
+
+    return pSec;
+}
+
+static bool loadProfile(osl_TFile* pFile, osl_TProfileImpl* pProfile)
+{
+    sal_uInt32  i;
+    char*   pStr;
+    char*   pChar;
+
+    char* pLine;
+
+    if ( !pFile )
+    {
+        return false;
+    }
+
+    if ( !pProfile )
+    {
+        return false;
+    }
+
+    pProfile->m_NoLines    = 0;
+    pProfile->m_NoSections = 0;
+
+    OSL_VERIFY(OslProfile_rewindFile(pFile, false));
+
+    while ( ( pLine=OslProfile_getLine(pFile) ) != nullptr )
+    {
+        char* bWasAdded = addLine( pProfile, pLine );
+        free( pLine );
+        SAL_WARN_IF(!bWasAdded, "sal.osl", "addLine( pProfile, pLine ) ==> false");
+        if ( ! bWasAdded )
+            return false;
+    }
+
+    for (i = 0; i < pProfile->m_NoLines; i++)
+    {
+        pStr = stripBlanks(pProfile->m_Lines[i], nullptr);
+
+        if ((*pStr == '\0') || (*pStr == ';'))
+            continue;
+
+        if ((*pStr != '[') || ((pChar = strrchr(pStr, ']')) == nullptr) ||
+            ((pChar - pStr) <= 2))
+        {
+            /* insert entry */
+
+            if (pProfile->m_NoSections < 1)
+                continue;
+
+            if ((pChar = strchr(pStr, '=')) == nullptr)
+                pChar = pStr + strlen(pStr);
+
+            if (! addEntry(pProfile, &pProfile->m_Sections[pProfile->m_NoSections - 1],
+                           i, pStr, pChar - pStr))
+            {
+                SAL_WARN("sal.osl", "Adding entry => false");
+                continue;
+            }
+
+        }
+        else
+        {
+            /* new section */
+
+            if (! addSection(pProfile, i, pStr + 1, pChar - pStr - 1))
+            {
+                SAL_WARN("sal.osl", "Adding section => false");
+                continue;
+            }
+
+        }
+    }
+
+    return true;
+}
+
+static bool storeProfile(osl_TProfileImpl* pProfile, bool bCleanup)
+{
+    if (pProfile->m_Lines != nullptr)
+    {
+        if (pProfile->m_Flags & FLG_MODIFIED)
+        {
+            sal_uInt32 i;
+
+            osl_TFile* pTmpFile = osl_openTmpProfileImpl(pProfile);
+
+            if ( pTmpFile == nullptr )
+            {
+                return false;
+            }
+
+            OSL_VERIFY(OslProfile_rewindFile(pTmpFile, true));
+
+            for ( i = 0 ; i < pProfile->m_NoLines ; i++ )
+            {
+                OSL_VERIFY(OslProfile_putLine(pTmpFile, pProfile->m_Lines[i]));
+            }
+
+            if ( ! writeProfileImpl(pTmpFile) )
+            {
+                if ( pTmpFile->m_pWriteBuf != nullptr )
+                {
+                    free(pTmpFile->m_pWriteBuf);
+                }
+
+                pTmpFile->m_pWriteBuf=nullptr;
+                pTmpFile->m_nWriteBufLen=0;
+                pTmpFile->m_nWriteBufFree=0;
+
+                closeFileImpl(pTmpFile,pProfile->m_Flags);
+
+                return false;
+            }
+
+            pProfile->m_Flags &= ~FLG_MODIFIED;
+
+            closeFileImpl(pProfile->m_pFile,pProfile->m_Flags);
+            closeFileImpl(pTmpFile,pProfile->m_Flags);
+
+            osl_ProfileSwapProfileNames(pProfile);
+
+            pProfile->m_pFile = openFileImpl(pProfile->m_FileName,pProfile->m_Flags);
+
+        }
+
+        if (bCleanup)
+        {
+            while (pProfile->m_NoLines > 0)
+                removeLine(pProfile, pProfile->m_NoLines - 1);
+
+            free(pProfile->m_Lines);
+            pProfile->m_Lines = nullptr;
+            pProfile->m_NoLines = 0;
+            pProfile->m_MaxLines = 0;
+
+            while (pProfile->m_NoSections > 0)
+                removeSection(pProfile, &pProfile->m_Sections[pProfile->m_NoSections - 1]);
+
+            free(pProfile->m_Sections);
+            pProfile->m_Sections = nullptr;
+            pProfile->m_NoSections = 0;
+            pProfile->m_MaxSections = 0;
+        }
+    }
+
+    return true;
+}
+
+static osl_TFile* osl_openTmpProfileImpl(osl_TProfileImpl* pProfile)
+{
+    osl_TFile* pFile=nullptr;
+    char const * const pszExtension = "tmp";
+    char pszTmpName[PATH_MAX];
+    oslProfileOption PFlags=0;
+
+    pszTmpName[0] = '\0';
+
+    /* generate tmp profilename */
+    osl_ProfileGenerateExtension(pProfile->m_FileName, pszExtension, pszTmpName, PATH_MAX);
+
+    if ( pszTmpName[0] == 0 )
+    {
+        return nullptr;
+    }
+
+    if ( ! ( pProfile->m_Flags & osl_Profile_READLOCK ) )
+    {
+        PFlags |= osl_Profile_WRITELOCK;
+    }
+
+    /* open this file */
+    pFile = openFileImpl(pszTmpName,pProfile->m_Flags | PFlags);
+
+    /* return new pFile */
+    return pFile;
+}
+
+static bool osl_ProfileSwapProfileNames(osl_TProfileImpl* pProfile)
+{
+    char pszBakFile[PATH_MAX];
+    char pszTmpFile[PATH_MAX];
+
+    pszBakFile[0] = '\0';
+    pszTmpFile[0] = '\0';
+
+    osl_ProfileGenerateExtension(pProfile->m_FileName, "bak", pszBakFile, PATH_MAX);
+    osl_ProfileGenerateExtension(pProfile->m_FileName, "tmp", pszTmpFile, PATH_MAX);
+
+    /* unlink bak */
+    unlink( pszBakFile );
+
+    // Rename ini -> bak, then tmp -> ini:
+    bool result = rename( pProfile->m_FileName, pszBakFile ) == 0;
+    if (!result)
+    {
+        int e = errno;
+        SAL_INFO("sal.file", "rename(" << pProfile->m_FileName << "," << pszBakFile << "): " << UnixErrnoString(e));
+    }
+    else
+    {
+        SAL_INFO("sal.file", "rename(" << pProfile->m_FileName << "," << pszBakFile << "): OK");
+        result = rename( pszTmpFile, pProfile->m_FileName ) == 0;
+        if (!result)
+        {
+            int e = errno;
+            SAL_INFO("sal.file", "rename(" << pszTmpFile << "," << pProfile->m_FileName << "): " << UnixErrnoString(e));
+        }
+        else
+        {
+            SAL_INFO("sal.file", "rename(" << pszTmpFile << "," << pProfile->m_FileName << "): OK");
+        }
+    }
+    return result;
+}
+
+static void osl_ProfileGenerateExtension(const char* pszFileName, const char* pszExtension, char* pszTmpName, int BufferMaxLen)
+{
+    char* cursor = pszTmpName;
+    int len;
+
+    /* concatenate filename + "." + extension, limited to the size of the
+     * output buffer; in case of overrun, data is truncated at the end...
+     * and the result is always 0-terminated.
+     */
+    len = strlen(pszFileName);
+    if(len < BufferMaxLen)
+    {
+        memcpy(cursor, pszFileName, len);
+        cursor += len;
+        BufferMaxLen -= len;
+    }
+    else
+    {
+        memcpy(cursor, pszFileName, BufferMaxLen - 1);
+        cursor += BufferMaxLen - 1;
+        BufferMaxLen = 1;
+    }
+    if(BufferMaxLen > 1)
+    {
+        *cursor++ = '.';
+        BufferMaxLen -= 1;
+    }
+    len = strlen(pszExtension);
+    if(len < BufferMaxLen)
+    {
+        memcpy(cursor, pszExtension, len);
+        cursor += len;
+    }
+    else
+    {
+        memcpy(cursor, pszExtension, BufferMaxLen - 1);
+        cursor += BufferMaxLen - 1;
+    }
+    *cursor = 0;
+}
+
+static osl_TProfileImpl* acquireProfile(oslProfile Profile, bool bWriteable)
+{
+    osl_TProfileImpl* pProfile = static_cast<osl_TProfileImpl*>(Profile);
+    oslProfileOption PFlags=0;
+
+    if ( bWriteable )
+    {
+        PFlags = osl_Profile_DEFAULT | osl_Profile_WRITELOCK;
+    }
+    else
+    {
+        PFlags = osl_Profile_DEFAULT;
+    }
+
+    if (pProfile == nullptr)
+    {
+        if ( ( pProfile = static_cast<osl_TProfileImpl*>(osl_openProfile(nullptr, PFlags )) ) != nullptr )
+        {
+            pProfile->m_Flags |= FLG_AUTOOPEN;
+        }
+    }
+    else
+    {
+        if (! (pProfile->m_Flags & osl_Profile_SYSTEM))
+        {
+            if (! (pProfile->m_Flags & (osl_Profile_READLOCK | osl_Profile_WRITELOCK | osl_Profile_FLUSHWRITE )))
+            {
+                osl_TStamp Stamp;
+
+                if (! (pProfile->m_pFile = openFileImpl(pProfile->m_FileName, pProfile->m_Flags | PFlags )))
+                    return nullptr;
+
+                Stamp = OslProfile_getFileStamp(pProfile->m_pFile);
+
+                if (memcmp(&Stamp, &(pProfile->m_Stamp), sizeof(osl_TStamp)))
+                {
+                    pProfile->m_Stamp = Stamp;
+                    bool bRet = loadProfile(pProfile->m_pFile, pProfile);
+                    SAL_WARN_IF(!bRet, "sal.osl", "loadProfile(pProfile->m_pFile, pProfile) ==> false");
+                }
+            }
+            else
+            {
+                /* A readlock file could not be written */
+                if ((pProfile->m_Flags & osl_Profile_READLOCK) && bWriteable)
+                {
+                    return nullptr;
+                }
+            }
+        }
+    }
+
+    return pProfile;
+}
+
+static bool releaseProfile(osl_TProfileImpl* pProfile)
+{
+    if ( pProfile == nullptr )
+    {
+        return false;
+    }
+
+    if (pProfile->m_Flags & FLG_AUTOOPEN)
+    {
+        return osl_closeProfile(static_cast<oslProfile>(pProfile));
+    }
+
+    if (! (pProfile->m_Flags & (osl_Profile_READLOCK | osl_Profile_WRITELOCK | osl_Profile_FLUSHWRITE )))
+    {
+        if (pProfile->m_Flags & FLG_MODIFIED)
+        {
+            bool bRet = storeProfile(pProfile, false);
+            SAL_WARN_IF(!bRet, "sal.osl", "storeProfile(pProfile, false) ==> false");
+        }
+
+        closeFileImpl(pProfile->m_pFile,pProfile->m_Flags);
+        pProfile->m_pFile = nullptr;
+    }
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/random.cxx b/sal/osl/unx/random.cxx
new file mode 100644
index 000000000..260aa61ba
--- /dev/null
+++ b/sal/osl/unx/random.cxx
@@ -0,0 +1,46 @@
+/* -*- 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/.
+ */
+
+#include "system.hxx"
+#include <oslrandom.h>
+
+#include <assert.h>
+
+int osl_get_system_random_data(char* buffer, size_t desired_len)
+{
+    int fd;
+
+    assert(buffer);
+    fd = open("/dev/urandom", O_RDONLY);
+    if (fd != -1)
+    {
+        while (desired_len)
+        {
+            ssize_t nb_read;
+            if ((nb_read = read(fd, buffer, desired_len)) == -1)
+            {
+                if (errno != EINTR)
+                {
+                    close(fd);
+                    return false;
+                }
+            }
+            else
+            {
+                buffer += nb_read;
+                desired_len -= nb_read;
+            }
+        }
+        close(fd);
+        return true;
+    }
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/readwrite_helper.cxx b/sal/osl/unx/readwrite_helper.cxx
new file mode 100644
index 000000000..49c44c2c0
--- /dev/null
+++ b/sal/osl/unx/readwrite_helper.cxx
@@ -0,0 +1,79 @@
+/* -*- 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/.
+ */
+
+#include <sal/config.h>
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <limits>
+
+#include "readwrite_helper.hxx"
+
+#include "system.hxx"
+
+namespace {
+
+std::size_t cap_ssize_t(std::size_t value) {
+    return std::min(value, std::size_t(std::numeric_limits<ssize_t>::max()));
+}
+
+}
+
+bool safeWrite(int fd, void* data, std::size_t dataSize)
+{
+    auto nToWrite = dataSize;
+    unsigned char* dataToWrite = static_cast<unsigned char *>(data);
+
+    while ( nToWrite ) {
+        auto nWritten = write(fd, dataToWrite, cap_ssize_t(nToWrite));
+        if ( nWritten < 0 ) {
+            if ( errno == EINTR )
+                continue;
+
+            return false;
+
+        }
+
+        assert(nWritten > 0);
+        nToWrite -= nWritten;
+        dataToWrite += nWritten;
+    }
+
+    return true;
+}
+
+bool safeRead( int fd, void* buffer, std::size_t count )
+{
+    auto nToRead = count;
+    unsigned char* bufferForReading = static_cast<unsigned char *>(buffer);
+
+    while ( nToRead ) {
+        auto nRead = read(fd, bufferForReading, cap_ssize_t(nToRead));
+        if ( nRead < 0 ) {
+            // We were interrupted before reading, retry.
+            if (errno == EINTR)
+                continue;
+
+            return false;
+        }
+
+        // If we reach the EOF, we consider this a partial transfer and thus
+        // an error.
+        if ( nRead == 0 )
+            return false;
+
+        nToRead -= nRead;
+        bufferForReading += nRead;
+    }
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/readwrite_helper.hxx b/sal/osl/unx/readwrite_helper.hxx
new file mode 100644
index 000000000..133ccd016
--- /dev/null
+++ b/sal/osl/unx/readwrite_helper.hxx
@@ -0,0 +1,26 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_READWRITE_HELPER_HXX
+#define INCLUDED_SAL_OSL_UNX_READWRITE_HELPER_HXX
+
+#include <sal/config.h>
+
+#include <cstddef>
+
+bool safeWrite(int fd, void* data, std::size_t dataSize);
+
+// This function *will* read |count| bytes from |fd|, busy looping
+// if needed. Don't use it when you don't know if you can request enough
+// data. It will return sal_False for any partial transfer or error.
+bool safeRead(int fd, void* buffer, std::size_t count);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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: */
diff --git a/sal/osl/unx/saltime.hxx b/sal/osl/unx/saltime.hxx
new file mode 100644
index 000000000..03e8047e0
--- /dev/null
+++ b/sal/osl/unx/saltime.hxx
@@ -0,0 +1,29 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_SALTIME_HXX
+#define INCLUDED_SAL_OSL_UNX_SALTIME_HXX
+
+#include <sal/config.h>
+
+void sal_initGlobalTimer();
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/secimpl.hxx b/sal/osl/unx/secimpl.hxx
new file mode 100644
index 000000000..1577d6609
--- /dev/null
+++ b/sal/osl/unx/secimpl.hxx
@@ -0,0 +1,35 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_SECIMPL_HXX
+#define INCLUDED_SAL_OSL_UNX_SECIMPL_HXX
+
+#include <pwd.h>
+
+struct oslSecurityImpl
+{
+    struct passwd m_pPasswd;
+    char m_buffer[1]; /* should be a C99 flexible array member */
+};
+
+bool osl_psz_getUserIdent(oslSecurity Security, char* pszIdent, sal_uInt32 nMax);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/security.cxx b/sal/osl/unx/security.cxx
new file mode 100644
index 000000000..f541c9000
--- /dev/null
+++ b/sal/osl/unx/security.cxx
@@ -0,0 +1,537 @@
+/* -*- 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 <sal/config.h>
+
+#include <cassert>
+#include <cstddef>
+#include <cstring>
+#include <limits>
+
+#ifdef IOS
+#include <premac.h>
+#import <Foundation/Foundation.h>
+#include <postmac.h>
+#endif
+
+#include "system.hxx"
+
+#include <o3tl/safeint.hxx>
+#include <osl/security.h>
+#include <rtl/bootstrap.hxx>
+#include <sal/log.hxx>
+
+#include <osl/thread.h>
+#include <osl/file.h>
+
+#if defined LINUX || defined __sun
+#include <crypt.h>
+#endif
+
+#if defined HAIKU
+#include <fs_info.h>
+#include <FindDirectory.h>
+#endif
+
+#include "secimpl.hxx"
+
+#ifdef ANDROID
+#define getpwuid_r(uid, pwd, buf, buflen, result) (*(result) = getpwuid(uid), (*(result) ? (memcpy (buf, *(result), sizeof (struct passwd)), 0) : errno))
+#endif
+
+static bool osl_psz_getHomeDir(oslSecurity Security, OString* pszDirectory);
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory);
+
+static bool sysconf_SC_GETPW_R_SIZE_MAX(std::size_t * value) {
+#if defined _SC_GETPW_R_SIZE_MAX
+    long m;
+    errno = 0;
+    m = sysconf(_SC_GETPW_R_SIZE_MAX);
+    if (m == -1) {
+        /* _SC_GETPW_R_SIZE_MAX has no limit; some platforms like certain
+           FreeBSD versions support sysconf(_SC_GETPW_R_SIZE_MAX) in a broken
+           way and always set EINVAL, so be resilient here: */
+        return false;
+    }
+    SAL_WARN_IF( m < 0 || o3tl::make_unsigned(m) >= std::numeric_limits<std::size_t>::max(), "sal.osl",
+                "m < 0 || (unsigned long) m >= std::numeric_limits<std::size_t>::max()");
+    *value = static_cast<std::size_t>(m);
+    return true;
+#else
+    /* some platforms like macOS 1.3 do not define _SC_GETPW_R_SIZE_MAX: */
+    return false;
+#endif
+}
+
+static oslSecurityImpl * growSecurityImpl(
+    oslSecurityImpl * impl, std::size_t * bufSize)
+{
+    std::size_t n = 0;
+    oslSecurityImpl * p = nullptr;
+    if (impl == nullptr) {
+        if (!sysconf_SC_GETPW_R_SIZE_MAX(&n)) {
+            /* choose something sensible (the callers of growSecurityImpl will
+               detect it if the allocated buffer is too small: */
+            n = 1024;
+        }
+    } else if (*bufSize <= std::numeric_limits<std::size_t>::max() / 2) {
+        n = 2 * *bufSize;
+    }
+    if (n != 0) {
+        if (n <= std::numeric_limits<std::size_t>::max()
+            - offsetof(oslSecurityImpl, m_buffer))
+        {
+            *bufSize = n;
+            n += offsetof(oslSecurityImpl, m_buffer);
+        } else {
+            *bufSize = std::numeric_limits<std::size_t>::max()
+                - offsetof(oslSecurityImpl, m_buffer);
+            n = std::numeric_limits<std::size_t>::max();
+        }
+        p = static_cast<oslSecurityImpl *>(realloc(impl, n));
+        memset (p, 0, n);
+    }
+    if (p == nullptr) {
+        free(impl);
+    }
+    return p;
+}
+
+static void deleteSecurityImpl(oslSecurityImpl * impl) {
+    free(impl);
+}
+
+oslSecurity SAL_CALL osl_getCurrentSecurity()
+{
+    std::size_t n = 0;
+    oslSecurityImpl * p = nullptr;
+    for (;;) {
+        struct passwd * found;
+        p = growSecurityImpl(p, &n);
+        if (p == nullptr) {
+            return nullptr;
+        }
+#if (defined(IOS) && defined(X86_64)) || defined(EMSCRIPTEN)
+        // getpwuid_r() does not work in the iOS simulator
+        (void) found;
+        char * buffer = p->m_buffer;
+        assert(n >= 100);
+        strcpy(buffer, "mobile");
+        p->m_pPasswd.pw_name = buffer;
+        buffer += strlen(buffer) + 1;
+        strcpy(buffer, "*");
+        p->m_pPasswd.pw_passwd = buffer;
+        buffer += strlen(buffer) + 1;
+        p->m_pPasswd.pw_uid = geteuid();
+        p->m_pPasswd.pw_gid = getegid();
+#if !defined(EMSCRIPTEN)
+        p->m_pPasswd.pw_change = 0;
+        strcpy(buffer, "");
+        p->m_pPasswd.pw_class = buffer;
+        buffer += strlen(buffer) + 1;
+        p->m_pPasswd.pw_expire = 0;
+#endif
+        strcpy(buffer, "Mobile User");
+        p->m_pPasswd.pw_gecos = buffer;
+        buffer += strlen(buffer) + 1;
+        strcpy(buffer, "/var/mobile"); // ???
+        p->m_pPasswd.pw_dir = buffer;
+        buffer += strlen(buffer) + 1;
+        strcpy(buffer, "");
+        p->m_pPasswd.pw_shell = buffer;
+        buffer += strlen(buffer) + 1;
+        return p;
+#else
+        switch (getpwuid_r(getuid(), &p->m_pPasswd, p->m_buffer, n, &found)) {
+        case ERANGE:
+            break;
+        case 0:
+            if (found != nullptr) {
+                return p;
+            }
+            [[fallthrough]];
+        default:
+            deleteSecurityImpl(p);
+            return nullptr;
+        }
+#endif
+    }
+}
+
+oslSecurityError SAL_CALL osl_loginUser(
+    SAL_UNUSED_PARAMETER rtl_uString *,
+    SAL_UNUSED_PARAMETER rtl_uString *,
+    SAL_UNUSED_PARAMETER oslSecurity *
+    )
+{
+    return osl_Security_E_None;
+}
+
+oslSecurityError SAL_CALL osl_loginUserOnFileServer(
+    SAL_UNUSED_PARAMETER rtl_uString *,
+    SAL_UNUSED_PARAMETER rtl_uString *,
+    SAL_UNUSED_PARAMETER rtl_uString *,
+    SAL_UNUSED_PARAMETER oslSecurity *
+    )
+{
+    return osl_Security_E_UserUnknown;
+}
+
+sal_Bool SAL_CALL osl_getUserIdent(oslSecurity Security, rtl_uString **ustrIdent)
+{
+    bool     bRet = false;
+    char pszIdent[1024];
+
+    pszIdent[0] = '\0';
+
+    bRet = osl_psz_getUserIdent(Security,pszIdent,sizeof(pszIdent));
+
+    rtl_string2UString( ustrIdent, pszIdent, rtl_str_getLength( pszIdent ), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+    SAL_WARN_IF(*ustrIdent == nullptr, "sal.osl", "*ustrIdent == NULL");
+
+    return bRet;
+}
+
+bool osl_psz_getUserIdent(oslSecurity Security, char *pszIdent, sal_uInt32 nMax)
+{
+    char  buffer[32];
+    sal_Int32 nChr;
+
+    oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+    if (pSecImpl == nullptr)
+        return false;
+
+    nChr = snprintf(buffer, sizeof(buffer), "%u", pSecImpl->m_pPasswd.pw_uid);
+    if ( nChr < 0 || sal::static_int_cast<sal_uInt32>(nChr) >= sizeof(buffer)
+         || sal::static_int_cast<sal_uInt32>(nChr) >= nMax )
+        return false; /* leave *pszIdent unmodified in case of failure */
+
+    memcpy(pszIdent, buffer, nChr+1);
+    return true;
+}
+
+sal_Bool SAL_CALL osl_getUserName(oslSecurity Security, rtl_uString **ustrName)
+{
+    bool     bRet = false;
+    char * pszName;
+    sal_Int32 len;
+
+    oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+    if (pSecImpl != nullptr && pSecImpl->m_pPasswd.pw_name != nullptr) {
+        pszName = pSecImpl->m_pPasswd.pw_name;
+        auto const n = std::strlen(pszName);
+        if (n <= o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+            len = n;
+            bRet = true;
+        }
+    }
+
+    if (!bRet) {
+        pszName = nullptr;
+        len = 0;
+    }
+
+    rtl_string2UString( ustrName, pszName, len, osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+    SAL_WARN_IF(*ustrName == nullptr, "sal.osl", "ustrName == NULL");
+
+    return bRet;
+}
+
+sal_Bool SAL_CALL osl_getShortUserName(oslSecurity Security, rtl_uString **ustrName)
+{
+    return osl_getUserName(Security, ustrName); // No domain name on unix
+}
+
+sal_Bool SAL_CALL osl_getHomeDir(oslSecurity Security, rtl_uString **pustrDirectory)
+{
+    bool     bRet = false;
+    OString pszDirectory;
+
+    bRet = osl_psz_getHomeDir(Security,&pszDirectory);
+
+    if ( bRet )
+    {
+        rtl_string2UString( pustrDirectory, pszDirectory.getStr(), pszDirectory.getLength(), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+        SAL_WARN_IF(*pustrDirectory == nullptr, "sal.osl", "*pustrDirectory == NULL");
+        osl_getFileURLFromSystemPath( *pustrDirectory, pustrDirectory );
+    }
+
+    return bRet;
+}
+
+static bool osl_psz_getHomeDir(oslSecurity Security, OString* pszDirectory)
+{
+    assert(pszDirectory != nullptr);
+
+    oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+    if (pSecImpl == nullptr)
+        return false;
+
+#ifdef HAIKU
+    dev_t volume = dev_for_path("/boot");
+    char homeDir[B_PATH_NAME_LENGTH + B_FILE_NAME_LENGTH];
+    status_t result = find_directory(B_USER_DIRECTORY, volume, false, homeDir,
+                                     sizeof(homeDir));
+    if (result == B_OK) {
+        static_assert(
+            B_PATH_NAME_LENGTH + B_FILE_NAME_LENGTH <= std::numeric_limits<sal_Int32>::max());
+        *pszDirectory = OString(homeDir, std::strlen(homeDir));
+        return true;
+    }
+    return false;
+#endif
+
+#ifdef ANDROID
+{
+    OUString pValue;
+
+    if (rtl::Bootstrap::get("HOME", pValue))
+    {
+        auto const pStrValue = OUStringToOString(pValue, RTL_TEXTENCODING_UTF8);
+        if (!pStrValue.isEmpty())
+        {
+            *pszDirectory = pStrValue;
+            return true;
+        }
+    }
+}
+#endif
+
+#ifdef IOS
+    {
+        // Let's pretend the app-specific "Documents" directory is the home directory for now
+        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
+        NSString *userDirectory = [paths objectAtIndex:0];
+        auto const len = [userDirectory length];
+        if (len <= std::numeric_limits<sal_Int32>::max())
+        {
+            *pszDirectory = OString([userDirectory UTF8String], len);
+            return sal_True;
+        }
+    }
+#endif
+
+    /* if current user, check also environment for HOME */
+    if (getuid() == pSecImpl->m_pPasswd.pw_uid)
+    {
+        char *pStr = nullptr;
+#ifdef __sun
+        char    buffer[8192];
+
+        struct passwd pwd;
+        struct passwd *ppwd;
+
+#ifdef _POSIX_PTHREAD_SEMANTICS
+        if ( 0 != getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer), &ppwd ) )
+            ppwd = NULL;
+#else
+        ppwd = getpwuid_r(getuid(), &pwd, buffer, sizeof(buffer) );
+#endif
+
+        if ( ppwd )
+            pStr = ppwd->pw_dir;
+#else
+        pStr = getenv("HOME");
+#endif
+
+        if (pStr != nullptr && pStr[0] != '\0' && access(pStr, 0) == 0)
+        {
+            auto const len = std::strlen(pStr);
+            if (len > o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+                return false;
+            }
+            *pszDirectory = OString(pStr, len);
+            return true;
+        }
+    }
+    if (pSecImpl->m_pPasswd.pw_dir != nullptr)
+    {
+        auto const len = std::strlen(pSecImpl->m_pPasswd.pw_dir);
+        if (len > o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+            return false;
+        }
+        *pszDirectory = OString(pSecImpl->m_pPasswd.pw_dir, len);
+    }
+    else
+        return false;
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_getConfigDir(oslSecurity Security, rtl_uString **pustrDirectory)
+{
+    bool     bRet = false;
+    OString pszDirectory;
+
+    bRet = osl_psz_getConfigDir(Security,&pszDirectory);
+
+    if ( bRet )
+    {
+        rtl_string2UString( pustrDirectory, pszDirectory.getStr(), pszDirectory.getLength(), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+        SAL_WARN_IF(*pustrDirectory == nullptr, "sal.osl", "*pustrDirectory == NULL");
+        osl_getFileURLFromSystemPath( *pustrDirectory, pustrDirectory );
+    }
+
+    return bRet;
+}
+
+#if defined HAIKU
+
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory)
+{
+    assert(pszDirectory != nullptr);
+    (void) Security;
+    dev_t volume = dev_for_path("/boot");
+    char configDir[B_PATH_NAME_LENGTH + B_FILE_NAME_LENGTH];
+    status_t result = find_directory(B_USER_SETTINGS_DIRECTORY, volume, false,
+                                     configDir, sizeof(configDir));
+    if (result == B_OK) {
+        auto const len = strlen(configDir);
+        if (len <= sal_uInt32(std::numeric_limits<sal_Int32>::max())) {
+            *pszDirectory = OString(configDir, len);
+            return true;
+        }
+    }
+    return false;
+}
+
+#elif !defined(MACOSX) && !defined(IOS)
+
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory)
+{
+    assert(pszDirectory != nullptr);
+
+    char *pStr = getenv("XDG_CONFIG_HOME");
+
+    if (pStr == nullptr || pStr[0] == '\0' || access(pStr, 0) != 0)
+    {
+        // a default equal to $HOME/.config should be used.
+        OString home;
+        if (!osl_psz_getHomeDir(Security, &home))
+            return false;
+        auto const config = OString(home + "/.config");
+
+        // try to create dir if not present
+        bool dirOK = true;
+        if (mkdir(config.getStr(), S_IRWXU) != 0)
+        {
+            int e = errno;
+            if (e != EEXIST)
+            {
+                SAL_WARN(
+                    "sal.osl",
+                    "mkdir(" << config << "): errno=" << e);
+                dirOK = false;
+            }
+        }
+        if (dirOK)
+        {
+            // check file type and permissions
+            struct stat st;
+            if (stat(config.getStr(), &st) != 0)
+            {
+                SAL_INFO("sal.osl","Could not stat $HOME/.config");
+                dirOK = false;
+            }
+            else
+            {
+                if (!S_ISDIR(st.st_mode))
+                {
+                    SAL_INFO("sal.osl", "$HOME/.config is not a directory");
+                    dirOK = false;
+                }
+                if (!(st.st_mode & S_IRUSR && st.st_mode & S_IWUSR && st.st_mode & S_IXUSR))
+                {
+                    SAL_INFO("sal.osl", "$HOME/.config has bad permissions");
+                    dirOK = false;
+                }
+            }
+        }
+
+        // if !dirOK, resort to HOME
+        if (dirOK)
+            home = config;
+        *pszDirectory = home;
+    }
+    else
+    {
+        auto const len = std::strlen(pStr);
+        if (len > o3tl::make_unsigned(std::numeric_limits<sal_Int32>::max())) {
+            return false;
+        }
+        *pszDirectory = OString(pStr, len);
+    }
+
+    return true;
+}
+
+#else
+
+/*
+ * FIXME: rewrite to use more flexible
+ * NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES)
+ * as soon as we can bump the baseline to Tiger (for NSApplicationSupportDirectory) and have
+ * support for Objective-C in the build environment
+ */
+
+static bool osl_psz_getConfigDir(oslSecurity Security, OString* pszDirectory)
+{
+    assert(pszDirectory != nullptr);
+
+    OString home;
+    if( osl_psz_getHomeDir(Security, &home) )
+    {
+        *pszDirectory = home + "/Library/Application Support"; /* Used on iOS, too */
+        return true;
+    }
+
+    return false;
+}
+
+#endif
+
+sal_Bool SAL_CALL osl_isAdministrator(oslSecurity Security)
+{
+    oslSecurityImpl *pSecImpl = static_cast<oslSecurityImpl *>(Security);
+
+    if (pSecImpl == nullptr)
+        return false;
+
+    if (pSecImpl->m_pPasswd.pw_uid != 0)
+        return false;
+
+    return true;
+}
+
+void SAL_CALL osl_freeSecurityHandle(oslSecurity Security)
+{
+    deleteSecurityImpl(static_cast<oslSecurityImpl *>(Security));
+}
+
+sal_Bool SAL_CALL osl_loadUserProfile(SAL_UNUSED_PARAMETER oslSecurity)
+{
+    return false;
+}
+
+void SAL_CALL osl_unloadUserProfile(SAL_UNUSED_PARAMETER oslSecurity) {}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/signal.cxx b/sal/osl/unx/signal.cxx
new file mode 100644
index 000000000..91cf59ff1
--- /dev/null
+++ b/sal/osl/unx/signal.cxx
@@ -0,0 +1,452 @@
+/* -*- 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 <sal/config.h>
+
+#include <signalshared.hxx>
+
+#include <config_features.h>
+
+#include "soffice.hxx"
+/* system headers */
+#include "system.hxx"
+
+#include "backtrace.h"
+
+#define MAX_STACK_FRAMES 256
+
+#include <osl/diagnose.h>
+#include <osl/signal.h>
+#include <sal/log.hxx>
+#include <sal/macros.h>
+#include <rtl/bootstrap.h>
+#include <rtl/digest.h>
+
+#include "file_path_helper.hxx"
+#define ACT_IGNORE  1
+#define ACT_EXIT    2
+#define ACT_SYSTEM  3
+#define ACT_HIDE    4
+#define ACT_ABORT   5
+
+#if defined HAVE_VALGRIND_HEADERS
+#include <valgrind/memcheck.h>
+#endif
+
+namespace
+{
+extern "C" using Handler1 = void (*)(int);
+extern "C" using Handler2 = void (*)(int, siginfo_t *, void *);
+struct SignalAction
+{
+    int Signal;
+    int Action;
+    Handler1 Handler;
+    bool siginfo; // Handler's type is Handler2
+} Signals[] =
+{
+    { SIGHUP,    ACT_HIDE,   SIG_DFL, false }, /* hangup */
+    { SIGINT,    ACT_EXIT,   SIG_DFL, false }, /* interrupt (rubout) */
+    { SIGQUIT,   ACT_EXIT,   SIG_DFL, false }, /* quit (ASCII FS) */
+    { SIGILL,    ACT_SYSTEM, SIG_DFL, false }, /* illegal instruction (not reset when caught) */
+/* changed from ACT_ABOUT to ACT_SYSTEM to try and get collector to run*/
+    { SIGTRAP,   ACT_ABORT,  SIG_DFL, false }, /* trace trap (not reset when caught) */
+#if ( SIGIOT != SIGABRT )
+    { SIGIOT,    ACT_ABORT,  SIG_DFL, false }, /* IOT instruction */
+#endif
+#if defined(FORCE_DEFAULT_SIGNAL)
+    { SIGABRT,   ACT_SYSTEM, SIG_DFL, false }, /* used by abort, replace SIGIOT in the future */
+#else
+    { SIGABRT,   ACT_ABORT,  SIG_DFL, false }, /* used by abort, replace SIGIOT in the future */
+#endif
+#ifdef SIGEMT
+    { SIGEMT,    ACT_SYSTEM, SIG_DFL, false }, /* EMT instruction */
+/* changed from ACT_ABORT to ACT_SYSTEM to remove handler*/
+/* SIGEMT may also be used by the profiler - so it is probably not a good
+plan to have the new handler use this signal*/
+#endif
+    { SIGFPE,    ACT_ABORT,  SIG_DFL, false }, /* floating point exception */
+    { SIGKILL,   ACT_SYSTEM, SIG_DFL, false }, /* kill (cannot be caught or ignored) */
+    { SIGBUS,    ACT_ABORT,  SIG_DFL, false }, /* bus error */
+#if defined(FORCE_DEFAULT_SIGNAL)
+    { SIGSEGV,   ACT_SYSTEM, SIG_DFL, false }, /* segmentation violation */
+#else
+    { SIGSEGV,   ACT_ABORT,  SIG_DFL, false }, /* segmentation violation */
+#endif
+#ifdef SIGSYS
+    { SIGSYS,    ACT_ABORT,  SIG_DFL, false }, /* bad argument to system call */
+#endif
+    { SIGPIPE,   ACT_HIDE,   SIG_DFL, false }, /* write on a pipe with no one to read it */
+#if defined(FORCE_DEFAULT_SIGNAL)
+    { SIGALRM,   ACT_SYSTEM, SIG_DFL, false }, /* alarm clock */
+#else
+    { SIGALRM,   ACT_EXIT,   SIG_DFL, false }, /* alarm clock */
+#endif
+    { SIGTERM,   ACT_EXIT,   SIG_DFL, false }, /* software termination signal from kill */
+    { SIGUSR1,   ACT_SYSTEM, SIG_DFL, false }, /* user defined signal 1 */
+    { SIGUSR2,   ACT_SYSTEM, SIG_DFL, false }, /* user defined signal 2 */
+    { SIGCHLD,   ACT_SYSTEM, SIG_DFL, false }, /* child status change */
+#ifdef SIGPWR
+    { SIGPWR,    ACT_IGNORE, SIG_DFL, false }, /* power-fail restart */
+#endif
+    { SIGWINCH,  ACT_IGNORE, SIG_DFL, false }, /* window size change */
+    { SIGURG,    ACT_EXIT,   SIG_DFL, false }, /* urgent socket condition */
+#ifdef SIGPOLL
+    { SIGPOLL,   ACT_EXIT,   SIG_DFL, false }, /* pollable event occurred */
+#endif
+    { SIGSTOP,   ACT_SYSTEM, SIG_DFL, false }, /* stop (cannot be caught or ignored) */
+    { SIGTSTP,   ACT_SYSTEM, SIG_DFL, false }, /* user stop requested from tty */
+    { SIGCONT,   ACT_SYSTEM, SIG_DFL, false }, /* stopped process has been continued */
+    { SIGTTIN,   ACT_SYSTEM, SIG_DFL, false }, /* background tty read attempted */
+    { SIGTTOU,   ACT_SYSTEM, SIG_DFL, false }, /* background tty write attempted */
+    { SIGVTALRM, ACT_EXIT,   SIG_DFL, false }, /* virtual timer expired */
+    { SIGPROF,   ACT_SYSTEM, SIG_DFL, false }, /* profiling timer expired */
+/*Change from ACT_EXIT to ACT_SYSTEM for SIGPROF is so that profiling signals do
+not get taken by the new handler - the new handler does not pass on context
+information which causes 'collect' to crash. This is a way of avoiding
+what looks like a bug in the new handler*/
+    { SIGXCPU,   ACT_ABORT,  SIG_DFL, false }, /* exceeded cpu limit */
+    { SIGXFSZ,   ACT_ABORT,  SIG_DFL, false }  /* exceeded file size limit */
+};
+const int NoSignals = SAL_N_ELEMENTS(Signals);
+
+bool bSetSEGVHandler = false;
+bool bSetWINCHHandler = false;
+bool bSetILLHandler = false;
+
+void signalHandlerFunction(int, siginfo_t *, void *);
+
+#if HAVE_FEATURE_BREAKPAD
+bool is_unset_signal(int signal)
+{
+#ifdef DBG_UTIL
+    return (!bSetSEGVHandler && signal == SIGSEGV) ||
+        (!bSetWINCHHandler && signal == SIGWINCH) ||
+        (!bSetILLHandler && signal == SIGILL);
+#else
+    (void) signal;
+    return false;
+#endif
+}
+#endif
+
+}
+
+bool onInitSignal()
+{
+    if (sal::detail::isSoffice())
+    {
+        // WORKAROUND FOR SEGV HANDLER CONFLICT
+        //
+        // the java jit needs SIGSEGV for proper work
+        // and we need SIGSEGV for the office crashguard
+        //
+        // TEMPORARY SOLUTION:
+        //   the office sets the signal handler during startup
+        //   java can than overwrite it, if needed
+        bSetSEGVHandler = true;
+
+        // WORKAROUND FOR WINCH HANDLER (SEE ABOVE)
+        bSetWINCHHandler = true;
+
+        // WORKAROUND FOR ILLEGAL INSTRUCTION HANDLER (SEE ABOVE)
+        bSetILLHandler = true;
+    }
+
+#ifdef DBG_UTIL
+    bSetSEGVHandler = bSetWINCHHandler = bSetILLHandler = false;
+#endif
+
+    struct sigaction act;
+    act.sa_sigaction = signalHandlerFunction;
+    act.sa_flags = SA_RESTART | SA_SIGINFO;
+
+    sigfillset(&(act.sa_mask));
+
+    /* Initialize the rest of the signals */
+    for (SignalAction & rSignal : Signals)
+    {
+#if defined HAVE_VALGRIND_HEADERS
+        if (rSignal.Signal == SIGUSR2 && RUNNING_ON_VALGRIND)
+            rSignal.Action = ACT_IGNORE;
+#endif
+
+        /* hack: stomcatd is attaching JavaVM which does not work with an sigaction(SEGV) */
+        if ((bSetSEGVHandler || rSignal.Signal != SIGSEGV)
+        && (bSetWINCHHandler || rSignal.Signal != SIGWINCH)
+        && (bSetILLHandler   || rSignal.Signal != SIGILL))
+        {
+            if (rSignal.Action != ACT_SYSTEM)
+            {
+                if (rSignal.Action == ACT_HIDE)
+                {
+                    struct sigaction ign;
+
+                    ign.sa_handler = SIG_IGN;
+                    ign.sa_flags   = 0;
+                    sigemptyset(&ign.sa_mask);
+
+                    struct sigaction oact;
+                    if (sigaction(rSignal.Signal, &ign, &oact) == 0) {
+                        rSignal.siginfo = (oact.sa_flags & SA_SIGINFO) != 0;
+                        if (rSignal.siginfo) {
+                            rSignal.Handler = reinterpret_cast<Handler1>(
+                                oact.sa_sigaction);
+                        } else {
+                            rSignal.Handler = oact.sa_handler;
+                        }
+                    } else {
+                        rSignal.Handler = SIG_DFL;
+                        rSignal.siginfo = false;
+                    }
+                }
+                else
+                {
+                    struct sigaction oact;
+                    if (sigaction(rSignal.Signal, &act, &oact) == 0) {
+                        rSignal.siginfo = (oact.sa_flags & SA_SIGINFO) != 0;
+                        if (rSignal.siginfo) {
+                            rSignal.Handler = reinterpret_cast<Handler1>(
+                                oact.sa_sigaction);
+                        } else {
+                            rSignal.Handler = oact.sa_handler;
+                        }
+                    } else {
+                        rSignal.Handler = SIG_DFL;
+                        rSignal.siginfo = false;
+                    }
+                }
+            }
+        }
+    }
+
+    /* Clear signal mask inherited from parent process (on macOS, upon a
+       crash soffice re-execs itself from within the signal handler, so the
+       second soffice would have the guilty signal blocked and would freeze upon
+       encountering a similar crash again): */
+    sigset_t unset;
+    if (sigemptyset(&unset) < 0 ||
+        pthread_sigmask(SIG_SETMASK, &unset, nullptr) < 0)
+    {
+        SAL_WARN("sal.osl", "sigemptyset or pthread_sigmask failed");
+    }
+
+    return true;
+}
+
+bool onDeInitSignal()
+{
+    struct sigaction act;
+
+    sigemptyset(&(act.sa_mask));
+
+    /* Initialize the rest of the signals */
+    for (int i = NoSignals - 1; i >= 0; i--)
+        if (Signals[i].Action != ACT_SYSTEM
+            && ((bSetSEGVHandler || Signals[i].Signal != SIGSEGV)
+                && (bSetWINCHHandler || Signals[i].Signal != SIGWINCH)
+                && (bSetILLHandler || Signals[i].Signal != SIGILL)))
+        {
+            if (Signals[i].siginfo) {
+                act.sa_sigaction = reinterpret_cast<Handler2>(
+                    Signals[i].Handler);
+                act.sa_flags = SA_SIGINFO;
+            } else {
+                act.sa_handler = Signals[i].Handler;
+                act.sa_flags = 0;
+            }
+
+            sigaction(Signals[i].Signal, &act, nullptr);
+        }
+
+    return false;
+}
+
+namespace
+{
+void printStack(int sig)
+{
+    void *buffer[MAX_STACK_FRAMES];
+    int size = backtrace( buffer, SAL_N_ELEMENTS(buffer) );
+
+    fprintf( stderr, "\n\nFatal exception: Signal %d\n", sig );
+
+#if ! HAVE_FEATURE_BACKTRACE && defined( MACOSX ) && !defined( INTEL )
+    fprintf( stderr, "Please turn on Enable Crash Reporting and\nAutomatic Display of Crashlogs in the Console application\n" );
+#endif
+
+    if ( size > 0 )
+    {
+        fputs( "Stack:\n", stderr );
+        backtrace_symbols_fd( buffer, size, fileno(stderr) );
+    }
+}
+
+void callSystemHandler(int signal, siginfo_t * info, void * context)
+{
+    int i;
+
+    for (i = 0; i < NoSignals; i++)
+    {
+        if (Signals[i].Signal == signal)
+            break;
+    }
+
+    if (i >= NoSignals)
+        return;
+
+    if ((Signals[i].Handler == SIG_DFL) ||
+        (Signals[i].Handler == SIG_IGN) ||
+         (Signals[i].Handler == SIG_ERR))
+    {
+        switch (Signals[i].Action)
+        {
+            case ACT_EXIT:      /* terminate */
+                /* prevent dumping core on exit() */
+                _exit(255);
+                break;
+
+            case ACT_ABORT:     /* terminate with core dump */
+                struct sigaction act;
+                act.sa_handler = SIG_DFL;
+                act.sa_flags   = 0;
+                sigemptyset(&(act.sa_mask));
+                sigaction(SIGABRT, &act, nullptr);
+                printStack( signal );
+                abort();
+                break;
+
+            case ACT_IGNORE:    /* ignore */
+                break;
+
+            default:            /* should never happen */
+                OSL_ASSERT(false);
+        }
+    }
+    else if (Signals[i].siginfo) {
+        (*reinterpret_cast<Handler2>(Signals[i].Handler))(
+            signal, info, context);
+    } else {
+        (*Signals[i].Handler)(signal);
+    }
+}
+
+#if defined HAVE_VALGRIND_HEADERS
+void DUMPCURRENTALLOCS()
+{
+    VALGRIND_PRINTF( "=== start memcheck dump of active allocations ===\n" );
+
+#if __GNUC__ && !defined(__clang__)
+#   pragma GCC diagnostic push
+#   pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
+
+    VALGRIND_DO_LEAK_CHECK;
+
+#if __GNUC__ && !defined(__clang__)
+#   pragma GCC diagnostic pop
+#endif
+
+    VALGRIND_PRINTF( "=== end memcheck dump of active allocations ===\n" );
+}
+#endif
+
+void signalHandlerFunction(int signal, siginfo_t * info, void * context)
+{
+    oslSignalInfo Info;
+
+    Info.UserSignal = signal;
+    Info.UserData   = nullptr;
+
+    switch (signal)
+    {
+        case SIGBUS:
+        case SIGILL:
+        case SIGSEGV:
+        case SIGIOT:
+#if ( SIGIOT != SIGABRT )
+        case SIGABRT:
+#endif
+            Info.Signal = osl_Signal_AccessViolation;
+            break;
+
+        case -1:
+            Info.Signal = osl_Signal_IntegerDivideByZero;
+            break;
+
+        case SIGFPE:
+            Info.Signal = osl_Signal_FloatDivideByZero;
+            break;
+
+        case SIGINT:
+        case SIGTERM:
+        case SIGQUIT:
+            Info.Signal = osl_Signal_Terminate;
+            break;
+
+#if defined HAVE_VALGRIND_HEADERS
+        case SIGUSR2:
+            if (RUNNING_ON_VALGRIND)
+                DUMPCURRENTALLOCS();
+            Info.Signal = osl_Signal_System;
+            break;
+#endif
+
+        default:
+            Info.Signal = osl_Signal_System;
+            break;
+    }
+
+#if HAVE_FEATURE_BREAKPAD
+    if ((Info.Signal == osl_Signal_AccessViolation ||
+            Info.Signal == osl_Signal_IntegerDivideByZero ||
+            Info.Signal == osl_Signal_FloatDivideByZero) && !is_unset_signal(signal))
+    {
+        callSystemHandler(signal, info, context);
+    }
+#endif
+
+    switch (callSignalHandler(&Info))
+    {
+    case osl_Signal_ActCallNextHdl:
+        callSystemHandler(signal, info, context);
+        break;
+
+    case osl_Signal_ActAbortApp:
+        struct sigaction act;
+        act.sa_handler = SIG_DFL;
+        act.sa_flags   = 0;
+        sigemptyset(&(act.sa_mask));
+        sigaction(SIGABRT, &act, nullptr);
+        printStack( signal );
+        abort();
+        break;
+
+    case osl_Signal_ActKillApp:
+        /* prevent dumping core on exit() */
+        _exit(255);
+        break;
+    default:
+        break;
+    }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/socket.cxx b/sal/osl/unx/socket.cxx
new file mode 100644
index 000000000..535c1727c
--- /dev/null
+++ b/sal/osl/unx/socket.cxx
@@ -0,0 +1,2046 @@
+/* -*- 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 <sal/config.h>
+
+#include <utility>
+
+#include "system.hxx"
+
+#include <osl/socket.h>
+#include <osl/mutex.h>
+#include <osl/signal.h>
+
+#include <rtl/alloc.h>
+#include <rtl/byteseq.h>
+#include <rtl/ustring.hxx>
+#include <assert.h>
+#include <sal/types.h>
+#include <sal/log.hxx>
+
+#include "sockimpl.hxx"
+#include "unixerrnostring.hxx"
+#include <oslsocket.hxx>
+
+#include <poll.h>
+
+/* defines for shutdown */
+#define SD_RECEIVE 0
+#define SD_SEND 1
+#define SD_BOTH 2
+
+/*
+    oslSocketAddr is a pointer to a Berkeley struct sockaddr.
+    I refrained from using sockaddr_in because of possible further
+    extensions of this socket-interface (IP-NG?).
+    The intention was to hide all Berkeley data-structures from
+    direct access past the osl-interface.
+
+    The current implementation is internet (IP) centered. All
+    the constructor-functions (osl_create...) take parameters
+    that will probably make sense only in the IP-environment
+    (e.g. because of using the dotted-address-format).
+
+    If the interface will be extended to host other protocol-
+    families, I expect no externally visible changes in the
+    existing functions. You'll probably need only new
+    constructor-functions who take the different address
+    formats into consideration (maybe a long dotted address
+    or whatever).
+*/
+
+/* _Note_ that I rely on the fact that oslSocketAddr and struct sockaddr */
+/* are the same! I don't like it very much but see no other easy way to  */
+/* conceal the struct sockaddr from the eyes of the user. */
+
+#define OSL_INVALID_SOCKET      -1
+#define OSL_SOCKET_ERROR        -1
+
+/* Buffer size for getnameinfo */
+#define MAX_HOSTBUFFER_SIZE 2048
+
+const unsigned long FamilyMap[]= {
+    AF_INET,                    /* osl_Socket_FamilyInet    */
+    AF_IPX,                     /* osl_Socket_FamilyIpx     */
+    0                           /* osl_Socket_FamilyInvalid */
+};
+
+static oslAddrFamily osl_AddrFamilyFromNative(sal_uInt32 nativeType)
+{
+    oslAddrFamily i= oslAddrFamily(0);
+
+    while(i != osl_Socket_FamilyInvalid)
+    {
+        if(FamilyMap[i] == nativeType)
+            return i;
+        i = static_cast<oslAddrFamily>( i + 1 );
+    }
+
+    return i;
+}
+
+#define FAMILY_FROM_NATIVE(y) osl_AddrFamilyFromNative(y)
+#define FAMILY_TO_NATIVE(x) static_cast<short>(FamilyMap[x])
+
+const sal_uInt32 ProtocolMap[]= {
+    0,                          /* osl_Socket_ProtocolIp      */
+    NSPROTO_IPX,                /* osl_Socket_ProtocolIpx     */
+    NSPROTO_SPX,                /* osl_Socket_ProtocolSpx     */
+    NSPROTO_SPXII,              /* osl_Socket_ProtocolSpxII   */
+    0                           /* osl_Socket_ProtocolInvalid */
+};
+
+#define PROTOCOL_TO_NATIVE(x)   ProtocolMap[x]
+
+const sal_uInt32 TypeMap[]= {
+    SOCK_STREAM,                /* osl_Socket_TypeStream    */
+    SOCK_DGRAM,                 /* osl_Socket_TypeDgram     */
+    SOCK_RAW,                   /* osl_Socket_TypeRaw       */
+    SOCK_RDM,                   /* osl_Socket_TypeRdm       */
+    SOCK_SEQPACKET,             /* osl_Socket_TypeSeqPacket */
+    0                           /* osl_Socket_TypeInvalid   */
+};
+
+static oslSocketType osl_SocketTypeFromNative(sal_uInt32 nativeType)
+{
+    oslSocketType i= oslSocketType(0);
+
+    while(i != osl_Socket_TypeInvalid)
+    {
+        if(TypeMap[i] == nativeType)
+            return i;
+        i = static_cast<oslSocketType>(i + 1);
+    }
+
+    return i;
+}
+
+#define TYPE_TO_NATIVE(x)       TypeMap[x]
+#define TYPE_FROM_NATIVE(y)     osl_SocketTypeFromNative(y)
+
+const sal_uInt32 OptionMap[]= {
+    SO_DEBUG,                   /* osl_Socket_OptionDebug       */
+    SO_ACCEPTCONN,              /* osl_Socket_OptionAcceptConn  */
+    SO_REUSEADDR,               /* osl_Socket_OptionReuseAddr   */
+    SO_KEEPALIVE,               /* osl_Socket_OptionKeepAlive   */
+    SO_DONTROUTE,               /* osl_Socket_OptionDontRoute   */
+    SO_BROADCAST,               /* osl_Socket_OptionBroadcast   */
+    SO_USELOOPBACK,             /* osl_Socket_OptionUseLoopback */
+    SO_LINGER,                  /* osl_Socket_OptionLinger      */
+    SO_OOBINLINE,               /* osl_Socket_OptionOOBinLine   */
+    SO_SNDBUF,                  /* osl_Socket_OptionSndBuf      */
+    SO_RCVBUF,                  /* osl_Socket_OptionRcvBuf      */
+    SO_SNDLOWAT,                /* osl_Socket_OptionSndLowat    */
+    SO_RCVLOWAT,                /* osl_Socket_OptionRcvLowat    */
+    SO_SNDTIMEO,                /* osl_Socket_OptionSndTimeo    */
+    SO_RCVTIMEO,                /* osl_Socket_OptionRcvTimeo    */
+    SO_ERROR,                   /* osl_Socket_OptionError       */
+    SO_TYPE,                    /* osl_Socket_OptionType        */
+    TCP_NODELAY,                /* osl_Socket_OptionTcpNoDelay  */
+    0                           /* osl_Socket_OptionInvalid     */
+};
+
+#define OPTION_TO_NATIVE(x)     OptionMap[x]
+
+const sal_uInt32 OptionLevelMap[]= {
+    SOL_SOCKET,                 /* osl_Socket_LevelSocket  */
+    IPPROTO_TCP,                /* osl_Socket_LevelTcp     */
+    0                           /* osl_Socket_LevelInvalid */
+};
+
+#define OPTION_LEVEL_TO_NATIVE(x)       OptionLevelMap[x]
+
+const sal_uInt32 SocketMsgFlagMap[]= {
+    0,                          /* osl_Socket_MsgNormal    */
+    MSG_OOB,                    /* osl_Socket_MsgOOB       */
+    MSG_PEEK,                   /* osl_Socket_MsgPeek      */
+    MSG_DONTROUTE,              /* osl_Socket_MsgDontRoute */
+    MSG_MAXIOVLEN,              /* osl_Socket_MsgMaxIOVLen */
+    0                           /* osl_Socket_MsgInvalid   */
+};
+
+#define MSG_FLAG_TO_NATIVE(x)       SocketMsgFlagMap[x]
+
+const sal_uInt32 SocketDirection[]= {
+    SD_RECEIVE,                 /* osl_Socket_DirRead      */
+    SD_SEND,                    /* osl_Socket_DirWrite     */
+    SD_BOTH,                    /* osl_Socket_DirReadWrite */
+    0                           /* osl_Socket_DirInvalid   */
+};
+
+#define DIRECTION_TO_NATIVE(x)      SocketDirection[x]
+
+const struct
+{
+    int            errcode;
+    oslSocketError error;
+} SocketError[]= {
+    { 0,               osl_Socket_E_None              }, /* no error */
+    { ENOTSOCK,        osl_Socket_E_NotSocket         }, /* Socket operation on non-socket */
+    { EDESTADDRREQ,    osl_Socket_E_DestAddrReq       }, /* Destination address required */
+    { EMSGSIZE,        osl_Socket_E_MsgSize           }, /* Message too long */
+    { EPROTOTYPE,      osl_Socket_E_Prototype         }, /* Protocol wrong type for socket */
+    { ENOPROTOOPT,     osl_Socket_E_NoProtocol        }, /* Protocol not available */
+    { EPROTONOSUPPORT, osl_Socket_E_ProtocolNoSupport }, /* Protocol not supported */
+#ifdef ESOCKTNOSUPPORT
+    { ESOCKTNOSUPPORT, osl_Socket_E_TypeNoSupport     }, /* Socket type not supported */
+#endif
+    { EOPNOTSUPP,      osl_Socket_E_OpNotSupport      }, /* Operation not supported on socket */
+    { EPFNOSUPPORT,    osl_Socket_E_PfNoSupport       }, /* Protocol family not supported */
+    { EAFNOSUPPORT,    osl_Socket_E_AfNoSupport       }, /* Address family not supported by
+                                                            protocol family */
+    { EADDRINUSE,      osl_Socket_E_AddrInUse         }, /* Address already in use */
+    { EADDRNOTAVAIL,   osl_Socket_E_AddrNotAvail      }, /* Can't assign requested address */
+    { ENETDOWN,        osl_Socket_E_NetDown           }, /* Network is down */
+    { ENETUNREACH,     osl_Socket_E_NetUnreachable    }, /* Network is unreachable */
+    { ENETRESET,       osl_Socket_E_NetReset          }, /* Network dropped connection because
+                                                            of reset */
+    { ECONNABORTED,    osl_Socket_E_ConnAborted       }, /* Software caused connection abort */
+    { ECONNRESET,      osl_Socket_E_ConnReset         }, /* Connection reset by peer */
+    { ENOBUFS,         osl_Socket_E_NoBufferSpace     }, /* No buffer space available */
+    { EISCONN,         osl_Socket_E_IsConnected       }, /* Socket is already connected */
+    { ENOTCONN,        osl_Socket_E_NotConnected      }, /* Socket is not connected */
+    { ESHUTDOWN,       osl_Socket_E_Shutdown          }, /* Can't send after socket shutdown */
+#ifdef ETOOMANYREFS
+    { ETOOMANYREFS,    osl_Socket_E_TooManyRefs       }, /* Too many references: can't splice */
+#endif
+    { ETIMEDOUT,       osl_Socket_E_TimedOut          }, /* Connection timed out */
+    { ECONNREFUSED,    osl_Socket_E_ConnRefused       }, /* Connection refused */
+    { EHOSTDOWN,       osl_Socket_E_HostDown          }, /* Host is down */
+    { EHOSTUNREACH,    osl_Socket_E_HostUnreachable   }, /* No route to host */
+    { EWOULDBLOCK,     osl_Socket_E_WouldBlock        }, /* call would block on non-blocking socket */
+    { EALREADY,        osl_Socket_E_Already           }, /* operation already in progress */
+    { EINPROGRESS,     osl_Socket_E_InProgress        }, /* operation now in progress */
+    { EAGAIN,          osl_Socket_E_WouldBlock        }, /* same as EWOULDBLOCK */
+    { -1,              osl_Socket_E_InvalidError      }
+};
+
+static oslSocketError osl_SocketErrorFromNative(int nativeType)
+{
+    int i = 0;
+
+    while ((SocketError[i].error != osl_Socket_E_InvalidError) &&
+           (SocketError[i].errcode != nativeType)) i++;
+
+    return SocketError[i].error;
+}
+
+#define ERROR_FROM_NATIVE(y)    osl_SocketErrorFromNative(y)
+
+static oslSocketAddr osl_psz_createInetSocketAddr (
+    const char* pszDottedAddr, sal_Int32 Port);
+
+static oslHostAddr osl_psz_createHostAddr (
+    const char *pszHostname, const oslSocketAddr Addr);
+
+static oslHostAddr osl_psz_createHostAddrByName (
+    const char *pszHostname);
+
+static const char* osl_psz_getHostnameOfHostAddr (
+    const oslHostAddr Addr);
+
+static oslSocketAddr osl_psz_resolveHostname (
+    const char* pszHostname);
+
+static sal_Int32 osl_psz_getServicePort (
+    const char* pszServicename, const char* pszProtocol);
+
+static void osl_psz_getLastSocketErrorDescription (
+    oslSocket Socket, char* pBuffer, sal_uInt32 BufferSize);
+
+namespace {
+
+int convertToMs(TimeValue const * value) {
+    return value->Seconds * 1000 + value->Nanosec / 1000000; //TODO: overflow
+}
+
+}
+
+static oslSocket createSocketImpl()
+{
+    oslSocket pSocket;
+
+    pSocket = static_cast<oslSocket>(calloc(1, sizeof(struct oslSocketImpl)));
+
+    pSocket->m_Socket = OSL_INVALID_SOCKET;
+    pSocket->m_nLastError = 0;
+    pSocket->m_nRefCount = 1;
+
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pSocket->m_bIsAccepting = false;
+#endif
+
+    return pSocket;
+}
+
+static void destroySocketImpl(oslSocket Socket)
+{
+    if ( Socket != nullptr)
+        free(Socket);
+}
+
+static oslSocketAddr createSocketAddr()
+{
+    oslSocketAddr pAddr = static_cast<oslSocketAddr>(rtl_allocateZeroMemory( sizeof( struct oslSocketAddrImpl )));
+    return pAddr;
+}
+
+static oslSocketAddr createSocketAddrWithFamily(
+    oslAddrFamily family, sal_Int32 port, sal_uInt32 nAddr )
+{
+    oslSocketAddr pAddr;
+
+    SAL_WARN_IF( family != osl_Socket_FamilyInet, "sal.osl", "creating socket for non-IP address family" );
+
+    pAddr = createSocketAddr();
+    switch( family )
+    {
+    case osl_Socket_FamilyInet:
+    {
+        struct sockaddr_in* pInetAddr= reinterpret_cast<sockaddr_in*>(&pAddr->m_sockaddr);
+
+        pInetAddr->sin_family = FAMILY_TO_NATIVE(osl_Socket_FamilyInet);
+        pInetAddr->sin_addr.s_addr = nAddr;
+        pInetAddr->sin_port = static_cast<sal_uInt16>(port&0xffff);
+        break;
+       }
+    default:
+        pAddr->m_sockaddr.sa_family = FAMILY_TO_NATIVE(family);
+    }
+    return pAddr;
+}
+
+static oslSocketAddr createSocketAddrFromSystem( struct sockaddr *pSystemSockAddr )
+{
+    oslSocketAddr pAddr = createSocketAddr();
+    memcpy( &(pAddr->m_sockaddr), pSystemSockAddr, sizeof( struct sockaddr ) );
+    return pAddr;
+}
+
+static void destroySocketAddr( oslSocketAddr addr )
+{
+    free( addr );
+}
+
+oslSocketAddr SAL_CALL osl_createEmptySocketAddr(oslAddrFamily Family)
+{
+    oslSocketAddr pAddr = nullptr;
+
+    /* is it an internet-Addr? */
+    if (Family == osl_Socket_FamilyInet)
+    {
+        pAddr = createSocketAddrWithFamily(Family, 0 , htonl(INADDR_ANY) );
+    }
+    else
+    {
+        pAddr = createSocketAddrWithFamily( Family , 0 , 0 );
+    }
+
+    return pAddr;
+}
+
+oslSocketAddr SAL_CALL osl_copySocketAddr(oslSocketAddr Addr)
+{
+    oslSocketAddr pCopy = nullptr;
+    if (Addr)
+    {
+        pCopy = createSocketAddr();
+
+        if (pCopy)
+            memcpy(&(pCopy->m_sockaddr),&(Addr->m_sockaddr), sizeof(struct sockaddr));
+    }
+    return pCopy;
+}
+
+sal_Bool SAL_CALL osl_isEqualSocketAddr (
+    oslSocketAddr Addr1,
+    oslSocketAddr Addr2)
+{
+    struct sockaddr* pAddr1 = nullptr;
+    struct sockaddr* pAddr2 = nullptr;
+
+    assert(Addr1 && Addr2);
+    pAddr1 = &(Addr1->m_sockaddr);
+    pAddr2 = &(Addr2->m_sockaddr);
+
+    if (pAddr1 == pAddr2)
+    {
+        return true;
+    }
+
+    if (pAddr1->sa_family == pAddr2->sa_family)
+    {
+        switch (pAddr1->sa_family)
+        {
+            case AF_INET:
+            {
+                struct sockaddr_in* pInetAddr1= reinterpret_cast<sockaddr_in*>(pAddr1);
+                struct sockaddr_in* pInetAddr2= reinterpret_cast<sockaddr_in*>(pAddr2);
+
+                if ((pInetAddr1->sin_family == pInetAddr2->sin_family) &&
+                    (pInetAddr1->sin_addr.s_addr == pInetAddr2->sin_addr.s_addr) &&
+                    (pInetAddr1->sin_port == pInetAddr2->sin_port))
+                    return true;
+                [[fallthrough]];
+            }
+
+            default:
+            {
+                return (memcmp(pAddr1, pAddr2, sizeof(struct sockaddr)) == 0);
+            }
+        }
+    }
+
+    return false;
+}
+
+oslSocketAddr SAL_CALL osl_createInetBroadcastAddr (
+    rtl_uString *strDottedAddr,
+    sal_Int32    Port)
+{
+    sal_uInt32    nAddr = OSL_INADDR_NONE;
+    oslSocketAddr pAddr;
+
+    if (strDottedAddr && strDottedAddr->length)
+    {
+        /* Dotted host address for limited broadcast */
+        rtl_String *pDottedAddr = nullptr;
+
+        rtl_uString2String (
+            &pDottedAddr, strDottedAddr->buffer, strDottedAddr->length,
+            RTL_TEXTENCODING_UTF8, OUSTRING_TO_OSTRING_CVTFLAGS);
+
+        in_addr buf;
+        if (inet_pton (AF_INET, pDottedAddr->buffer, &buf) == 1) {
+            nAddr = buf.s_addr;
+        }
+        rtl_string_release (pDottedAddr);
+    }
+
+    if (nAddr != OSL_INADDR_NONE)
+    {
+        /* Limited broadcast */
+        nAddr = ntohl(nAddr);
+        if (IN_CLASSA(nAddr))
+        {
+            nAddr &= IN_CLASSA_NET;
+            nAddr |= IN_CLASSA_HOST;
+        }
+        else if (IN_CLASSB(nAddr))
+        {
+            nAddr &= IN_CLASSB_NET;
+            nAddr |= IN_CLASSB_HOST;
+        }
+        else if (IN_CLASSC(nAddr))
+        {
+            nAddr &= IN_CLASSC_NET;
+            nAddr |= IN_CLASSC_HOST;
+        }
+        else
+        {
+            /* No broadcast in class D */
+            return nullptr;
+        }
+        nAddr = htonl(nAddr);
+    }
+
+    pAddr = createSocketAddrWithFamily( osl_Socket_FamilyInet, htons(Port), nAddr );
+    return pAddr;
+}
+
+oslSocketAddr SAL_CALL osl_createInetSocketAddr (
+    rtl_uString *ustrDottedAddr,
+    sal_Int32    Port)
+{
+    rtl_String* strDottedAddr=nullptr;
+    oslSocketAddr Addr;
+    char* pszDottedAddr=nullptr;
+
+    if ( ustrDottedAddr != nullptr )
+    {
+        rtl_uString2String( &strDottedAddr,
+                            rtl_uString_getStr(ustrDottedAddr),
+                            rtl_uString_getLength(ustrDottedAddr),
+                            RTL_TEXTENCODING_UTF8,
+                            OUSTRING_TO_OSTRING_CVTFLAGS);
+        pszDottedAddr = rtl_string_getStr(strDottedAddr);
+    }
+
+    Addr = pszDottedAddr ? osl_psz_createInetSocketAddr(pszDottedAddr, Port) : nullptr;
+
+    if ( strDottedAddr != nullptr )
+    {
+        rtl_string_release(strDottedAddr);
+    }
+
+    return Addr;
+}
+
+oslSocketAddr osl_psz_createInetSocketAddr (
+    const char* pszDottedAddr,
+    sal_Int32       Port)
+{
+    oslSocketAddr pAddr = nullptr;
+    in_addr buf;
+    if(inet_pton(AF_INET, pszDottedAddr, &buf) == 1)
+    {
+        /* valid dotted addr */
+        pAddr = createSocketAddrWithFamily( osl_Socket_FamilyInet, htons(Port) , buf.s_addr );
+    }
+    return pAddr;
+}
+
+oslSocketResult SAL_CALL osl_setAddrOfSocketAddr( oslSocketAddr pAddr, sal_Sequence *pByteSeq )
+{
+    oslSocketResult res = osl_Socket_Error;
+
+    SAL_WARN_IF( !pAddr, "sal.osl", "setting address of undefined socket address" );
+    SAL_WARN_IF( !pByteSeq, "sal.osl", "setting undefined address for socket address" );
+
+    if( pAddr && pByteSeq )
+    {
+        struct sockaddr_in * pSystemInetAddr;
+
+        assert( pAddr->m_sockaddr.sa_family == FAMILY_TO_NATIVE( osl_Socket_FamilyInet ) );
+        assert( pByteSeq->nElements == 4 );
+
+        pSystemInetAddr = reinterpret_cast<sockaddr_in *>(&pAddr->m_sockaddr);
+        memcpy( &(pSystemInetAddr->sin_addr) , pByteSeq->elements , 4 );
+        res = osl_Socket_Ok;
+    }
+    return res;
+}
+
+oslSocketResult SAL_CALL osl_getAddrOfSocketAddr( oslSocketAddr pAddr, sal_Sequence **ppByteSeq )
+{
+    oslSocketResult res = osl_Socket_Error;
+
+    SAL_WARN_IF( !pAddr, "sal.osl", "getting address of undefined socket address" );
+    SAL_WARN_IF( !ppByteSeq, "sal.osl", "getting address to undefined address pointer" );
+
+    if( pAddr && ppByteSeq )
+    {
+        struct sockaddr_in * pSystemInetAddr = reinterpret_cast<sockaddr_in *>(&pAddr->m_sockaddr);
+        rtl_byte_sequence_constructFromArray( ppByteSeq, reinterpret_cast<sal_Int8 *>(&pSystemInetAddr->sin_addr), 4);
+        res = osl_Socket_Ok;
+    }
+    return res;
+}
+
+/** try to figure out a full-qualified hostname, by adding the current domain
+    as given by the domainname program to the given hostname.
+    This function MUST NOT call gethostbyname since pHostName already points
+    to data returned by gethostname and would be garbled: use gethostname_r
+    instead!
+ */
+
+namespace {
+
+struct oslAddrInfo
+{
+    addrinfo* pAddrInfoList = nullptr;
+    int nError;
+
+    oslAddrInfo(const char* name, bool isInet = false)
+    {
+        addrinfo aHints;
+        memset(&aHints, 0, sizeof(addrinfo));
+        if (isInet)
+            aHints.ai_family = AF_INET;
+        aHints.ai_flags = AI_CANONNAME;
+
+        nError = getaddrinfo(name, nullptr, &aHints, &pAddrInfoList);
+    }
+
+    ~oslAddrInfo()
+    {
+        if (nError == 0)
+            freeaddrinfo(pAddrInfoList);
+    }
+
+    const char* getHostName() const
+    {
+        assert(pAddrInfoList);
+        return pAddrInfoList->ai_canonname;
+    }
+};
+
+}
+static bool isFullQualifiedDomainName (const char *pHostName)
+{
+    /* a FQDN (aka 'hostname.domain.top_level_domain' )
+     * is a name which contains a dot '.' in it ( would
+     * match as well for 'hostname.' but is good enough
+     * for now )*/
+    return strchr( pHostName, int('.') ) != nullptr;
+}
+
+static char* getFullQualifiedDomainName (const char *pHostName)
+{
+    char  *pFullQualifiedName = nullptr;
+
+    if (isFullQualifiedDomainName(pHostName))
+    {
+        pFullQualifiedName = strdup(pHostName);
+    }
+    else
+    {
+        oslAddrInfo aAddrInfo(pHostName);
+        if (aAddrInfo.nError == 0)
+            pFullQualifiedName = strdup(aAddrInfo.getHostName());
+    }
+
+    return pFullQualifiedName;
+}
+
+struct oslHostAddrImpl
+{
+    char        *pHostName;
+    oslSocketAddr   pSockAddr;
+};
+
+static oslHostAddr addrinfoToHostAddr (const addrinfo* ai)
+{
+    if (!ai || !ai->ai_canonname || !ai->ai_addr)
+        return nullptr;
+
+    char* cn = getFullQualifiedDomainName(ai->ai_canonname);
+    SAL_WARN_IF( !cn, "sal.osl", "couldn't get full qualified domain name" );
+    if (cn == nullptr)
+        return nullptr;
+
+    oslSocketAddr pSockAddr = createSocketAddr();
+    SAL_WARN_IF( !pSockAddr, "sal.osl", "insufficient memory" );
+    if (pSockAddr == nullptr)
+    {
+        free(cn);
+        return nullptr;
+    }
+
+    if (ai->ai_family == FAMILY_TO_NATIVE(osl_Socket_FamilyInet))
+    {
+        memcpy (
+            &(pSockAddr->m_sockaddr),
+            ai->ai_addr,
+            ai->ai_addrlen);
+    }
+    else
+    {
+        /* unknown address family */
+        /* future extensions for new families might be implemented here */
+
+        SAL_WARN( "sal.osl", "unknown address family" );
+
+        destroySocketAddr( pSockAddr );
+        free (cn);
+        return nullptr;
+    }
+
+    oslHostAddr pAddr = static_cast<oslHostAddr>(malloc(sizeof(struct oslHostAddrImpl)));
+    SAL_WARN_IF( !pAddr, "sal.osl", "allocation error" );
+    if (pAddr == nullptr)
+    {
+        destroySocketAddr( pSockAddr );
+        free (cn);
+        return nullptr;
+    }
+
+    pAddr->pHostName= cn;
+    pAddr->pSockAddr= pSockAddr;
+
+    return pAddr;
+}
+
+oslHostAddr SAL_CALL osl_createHostAddr (
+    rtl_uString        *ustrHostname,
+    const oslSocketAddr Addr)
+{
+    oslHostAddr HostAddr;
+    rtl_String* strHostname=nullptr;
+    char* pszHostName=nullptr;
+
+    if ( ustrHostname != nullptr )
+    {
+        rtl_uString2String( &strHostname,
+                            rtl_uString_getStr(ustrHostname),
+                            rtl_uString_getLength(ustrHostname),
+                            RTL_TEXTENCODING_UTF8,
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+        pszHostName = rtl_string_getStr(strHostname);
+    }
+
+    HostAddr = osl_psz_createHostAddr(pszHostName,Addr);
+
+    if ( strHostname != nullptr )
+    {
+        rtl_string_release(strHostname);
+    }
+
+    return HostAddr;
+}
+
+oslHostAddr osl_psz_createHostAddr (
+    const char     *pszHostname,
+    const oslSocketAddr pAddr)
+{
+    oslHostAddr pHostAddr;
+    char            *cn;
+
+    SAL_WARN_IF( !pszHostname, "sal.osl", "undefined hostname" );
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+    if ((pszHostname == nullptr) || (pAddr == nullptr))
+        return nullptr;
+
+    cn = strdup(pszHostname);
+    SAL_WARN_IF( !cn, "sal.osl", "insufficient memory" );
+    if (cn == nullptr)
+        return nullptr;
+
+    pHostAddr= static_cast<oslHostAddr>(malloc(sizeof(struct oslHostAddrImpl)));
+    SAL_WARN_IF( !pHostAddr, "sal.osl", "allocation error" );
+    if (pHostAddr == nullptr)
+    {
+        free (cn);
+        return nullptr;
+    }
+
+    pHostAddr->pHostName= cn;
+    pHostAddr->pSockAddr= osl_copySocketAddr( pAddr );
+
+    return pHostAddr;
+}
+
+oslHostAddr SAL_CALL osl_createHostAddrByName(rtl_uString *ustrHostname)
+{
+    oslHostAddr HostAddr;
+    rtl_String* strHostname=nullptr;
+    char* pszHostName=nullptr;
+
+    if ( ustrHostname != nullptr )
+    {
+        rtl_uString2String( &strHostname,
+                            rtl_uString_getStr(ustrHostname),
+                            rtl_uString_getLength(ustrHostname),
+                            RTL_TEXTENCODING_UTF8,
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+        pszHostName=rtl_string_getStr(strHostname);
+    }
+
+    HostAddr = osl_psz_createHostAddrByName(pszHostName);
+
+    if ( strHostname != nullptr )
+    {
+        rtl_string_release(strHostname);
+    }
+
+    return HostAddr;
+}
+
+oslHostAddr osl_psz_createHostAddrByName (const char *pszHostname)
+{
+    oslAddrInfo aAddrInfo(pszHostname, /* isInet */ true);
+
+    return addrinfoToHostAddr (aAddrInfo.pAddrInfoList);
+}
+
+oslHostAddr SAL_CALL osl_createHostAddrByAddr (const oslSocketAddr pAddr)
+{
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+
+    if (pAddr == nullptr)
+        return nullptr;
+
+    if (pAddr->m_sockaddr.sa_family == FAMILY_TO_NATIVE(osl_Socket_FamilyInet))
+    {
+        const struct sockaddr_in *sin = reinterpret_cast<sockaddr_in *>(&pAddr->m_sockaddr);
+        if (sin->sin_addr.s_addr == htonl(INADDR_ANY))
+            return nullptr;
+
+        char host[MAX_HOSTBUFFER_SIZE];
+        int res = getnameinfo(&pAddr->m_sockaddr, sizeof(struct sockaddr_in),
+                              host, sizeof(host), nullptr, 0, NI_NAMEREQD);
+        if (res != 0)
+            return nullptr;
+
+        char *cn = getFullQualifiedDomainName(host);
+        SAL_WARN_IF( !cn, "sal.osl", "couldn't get full qualified domain name" );
+        if (cn == nullptr)
+            return nullptr;
+
+        oslSocketAddr pSockAddr = createSocketAddr();
+        SAL_WARN_IF( !pSockAddr, "sal.osl", "insufficient memory" );
+        if (pSockAddr == nullptr)
+        {
+            free(cn);
+            return nullptr;
+        }
+
+        memcpy(&pSockAddr->m_sockaddr, &pAddr->m_sockaddr, sizeof(pAddr->m_sockaddr));
+
+        oslHostAddr pHostAddr = static_cast<oslHostAddr>(malloc(sizeof(struct oslHostAddrImpl)));
+        SAL_WARN_IF( !pAddr, "sal.osl", "allocation error" );
+        if (pHostAddr == nullptr)
+        {
+            destroySocketAddr(pSockAddr);
+            free(cn);
+            return nullptr;
+        }
+
+        pHostAddr->pHostName = cn;
+        pHostAddr->pSockAddr = pSockAddr;
+
+        return pHostAddr;
+    }
+
+    return nullptr;
+}
+
+oslHostAddr SAL_CALL osl_copyHostAddr (const oslHostAddr pAddr)
+{
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+
+    if (pAddr)
+        return osl_psz_createHostAddr (pAddr->pHostName, pAddr->pSockAddr);
+    return nullptr;
+}
+
+void SAL_CALL osl_getHostnameOfHostAddr (
+    const oslHostAddr   Addr,
+    rtl_uString       **ustrHostname)
+{
+    const char* pHostname = osl_psz_getHostnameOfHostAddr(Addr);
+
+    rtl_uString_newFromAscii (ustrHostname, pHostname);
+}
+
+const char* osl_psz_getHostnameOfHostAddr (const oslHostAddr pAddr)
+{
+    if (pAddr)
+        return pAddr->pHostName;
+    return nullptr;
+}
+
+oslSocketAddr SAL_CALL osl_getSocketAddrOfHostAddr (const oslHostAddr pAddr)
+{
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+
+    if (pAddr)
+        return pAddr->pSockAddr;
+    return nullptr;
+}
+
+void SAL_CALL osl_destroyHostAddr (oslHostAddr pAddr)
+{
+    if (pAddr)
+    {
+        if (pAddr->pHostName)
+            free (pAddr->pHostName);
+        if (pAddr->pSockAddr)
+            osl_destroySocketAddr (pAddr->pSockAddr);
+        free (pAddr);
+    }
+}
+
+namespace
+{
+oslSocketResult lcl_getLocalHostname(rtl_uString **ustrLocalHostname, bool bUseFQDN)
+{
+    static auto const init = [bUseFQDN]() -> std::pair<oslSocketResult, OUString> {
+            char LocalHostname[256] = "";
+
+#ifdef SYSV
+            struct utsname uts;
+
+            if (uname(&uts) < 0)
+                return {osl_Socket_Error, OUString()};
+
+            if ((strlen(uts.nodename) + 1) > nBufLen)
+                return {osl_Socket_Error, OUString()};
+
+            strncpy(LocalHostname, uts.nodename, sizeof( LocalHostname ));
+#else  /* BSD compatible */
+            if (gethostname(LocalHostname, sizeof(LocalHostname)-1) != 0)
+                return {osl_Socket_Error, OUString()};
+#endif /* SYSV */
+            LocalHostname[sizeof(LocalHostname)-1] = 0;
+
+            /* check if we have an FQDN */
+            if (bUseFQDN && strchr(LocalHostname, '.') == nullptr)
+            {
+                oslHostAddr Addr;
+
+                /* no, determine it via dns */
+                Addr = osl_psz_createHostAddrByName(LocalHostname);
+
+                const char *pStr;
+                if ((pStr = osl_psz_getHostnameOfHostAddr(Addr)) != nullptr)
+                {
+                    strncpy(LocalHostname, pStr, sizeof( LocalHostname ));
+                    LocalHostname[sizeof(LocalHostname)-1] = 0;
+                }
+                osl_destroyHostAddr(Addr);
+            }
+
+            if (LocalHostname[0] != '\0')
+            {
+                return {osl_Socket_Ok, OUString::createFromAscii(LocalHostname)};
+            }
+
+            return {osl_Socket_Error, OUString()};
+        }();
+
+    rtl_uString_assign(ustrLocalHostname,init.second.pData);
+
+    return init.first;
+}
+}
+
+oslSocketResult SAL_CALL osl_getLocalHostname(rtl_uString **ustrLocalHostname)
+{
+    return lcl_getLocalHostname(ustrLocalHostname, false);
+}
+
+oslSocketResult osl_getLocalHostnameFQDN(rtl_uString **ustrLocalHostname)
+{
+    return lcl_getLocalHostname(ustrLocalHostname, true);
+}
+
+oslSocketAddr SAL_CALL osl_resolveHostname(rtl_uString *ustrHostname)
+{
+    oslSocketAddr Addr;
+    rtl_String* strHostname=nullptr;
+    char* pszHostName=nullptr;
+
+    if ( ustrHostname != nullptr )
+    {
+        rtl_uString2String( &strHostname,
+                            rtl_uString_getStr(ustrHostname),
+                            rtl_uString_getLength(ustrHostname),
+                            RTL_TEXTENCODING_UTF8,
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+        pszHostName = rtl_string_getStr(strHostname);
+    }
+
+    Addr = osl_psz_resolveHostname(pszHostName);
+
+    if ( strHostname != nullptr )
+    {
+        rtl_string_release(strHostname);
+    }
+
+    return Addr;
+}
+
+oslSocketAddr osl_psz_resolveHostname(const char* pszHostname)
+{
+    struct oslHostAddrImpl *pAddr = osl_psz_createHostAddrByName(pszHostname);
+
+    if (pAddr)
+    {
+        oslSocketAddr SockAddr = osl_copySocketAddr(pAddr->pSockAddr);
+
+        osl_destroyHostAddr(pAddr);
+
+        return SockAddr;
+    }
+
+    return nullptr;
+}
+
+sal_Int32 SAL_CALL osl_getServicePort(rtl_uString *ustrServicename, rtl_uString *ustrProtocol)
+{
+    sal_Int32 nPort;
+    rtl_String* strServicename=nullptr;
+    rtl_String* strProtocol=nullptr;
+    char* pszServiceName=nullptr;
+    char* pszProtocol=nullptr;
+
+    if ( ustrServicename != nullptr )
+    {
+        rtl_uString2String( &strServicename,
+                            rtl_uString_getStr(ustrServicename),
+                            rtl_uString_getLength(ustrServicename),
+                            RTL_TEXTENCODING_UTF8,
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+        pszServiceName = rtl_string_getStr(strServicename);
+    }
+
+    if ( ustrProtocol != nullptr )
+    {
+        rtl_uString2String( &strProtocol,
+                            rtl_uString_getStr(ustrProtocol),
+                            rtl_uString_getLength(ustrProtocol),
+                            RTL_TEXTENCODING_UTF8,
+                            OUSTRING_TO_OSTRING_CVTFLAGS );
+        pszProtocol = rtl_string_getStr(strProtocol);
+    }
+
+    nPort = osl_psz_getServicePort(pszServiceName,pszProtocol);
+
+    if ( strServicename != nullptr )
+    {
+        rtl_string_release(strServicename);
+    }
+
+    if ( strProtocol != nullptr )
+    {
+        rtl_string_release(strProtocol);
+    }
+
+    return nPort;
+}
+
+sal_Int32 osl_psz_getServicePort(const char* pszServicename,
+                        const char* pszProtocol)
+{
+    struct servent* ps;
+
+    ps= getservbyname(pszServicename, pszProtocol);
+
+    if (ps != nullptr)
+        return ntohs(ps->s_port);
+
+    return OSL_INVALID_PORT;
+}
+
+void SAL_CALL osl_destroySocketAddr(oslSocketAddr pAddr)
+{
+    destroySocketAddr( pAddr );
+}
+
+oslAddrFamily SAL_CALL osl_getFamilyOfSocketAddr(oslSocketAddr pAddr)
+{
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+
+    if (pAddr)
+        return FAMILY_FROM_NATIVE(pAddr->m_sockaddr.sa_family);
+    return osl_Socket_FamilyInvalid;
+}
+
+sal_Int32 SAL_CALL osl_getInetPortOfSocketAddr(oslSocketAddr pAddr)
+{
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+
+    if( pAddr )
+    {
+        struct sockaddr_in* pSystemInetAddr= reinterpret_cast<sockaddr_in*>(&pAddr->m_sockaddr);
+
+        if ( pSystemInetAddr->sin_family == FAMILY_TO_NATIVE(osl_Socket_FamilyInet))
+            return ntohs(pSystemInetAddr->sin_port);
+    }
+    return OSL_INVALID_PORT;
+}
+
+sal_Bool SAL_CALL osl_setInetPortOfSocketAddr(oslSocketAddr pAddr, sal_Int32 Port)
+{
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+
+    if( pAddr )
+    {
+        struct sockaddr_in* pSystemInetAddr= reinterpret_cast<sockaddr_in*>(&pAddr->m_sockaddr);
+        if ( pSystemInetAddr->sin_family == FAMILY_TO_NATIVE(osl_Socket_FamilyInet))
+        {
+            pSystemInetAddr->sin_port= htons(static_cast<short>(Port));
+            return true;
+        }
+    }
+
+    /* this is not a inet-addr => can't set port */
+    return false;
+}
+
+oslSocketResult SAL_CALL osl_getHostnameOfSocketAddr(oslSocketAddr Addr, rtl_uString **ustrHostname)
+{
+    oslHostAddr pHostAddr= osl_createHostAddrByAddr(Addr);
+
+    if (!pHostAddr)
+    {
+        return osl_Socket_Error;
+    }
+
+    rtl_uString_newFromAscii(ustrHostname,pHostAddr->pHostName);
+
+    osl_destroyHostAddr(pHostAddr);
+
+    return osl_Socket_Ok;
+}
+
+oslSocketResult SAL_CALL osl_getDottedInetAddrOfSocketAddr(oslSocketAddr Addr, rtl_uString **ustrDottedInetAddr)
+{
+    if( !Addr )
+    {
+        return osl_Socket_Error;
+    }
+
+    struct sockaddr_in* pSystemInetAddr = reinterpret_cast<sockaddr_in *>(&Addr->m_sockaddr);
+
+    if (pSystemInetAddr->sin_family != FAMILY_TO_NATIVE(osl_Socket_FamilyInet))
+    {
+        return osl_Socket_Error;
+    }
+
+    char buf[INET_ADDRSTRLEN];
+    auto const text = inet_ntop(AF_INET, &pSystemInetAddr->sin_addr, buf, INET_ADDRSTRLEN);
+    assert(text != nullptr);
+    rtl_uString_newFromAscii(ustrDottedInetAddr,text);
+
+    return osl_Socket_Ok;
+
+}
+
+oslSocket SAL_CALL osl_createSocket(
+    oslAddrFamily Family,
+    oslSocketType Type,
+    oslProtocol Protocol)
+{
+    oslSocket pSocket;
+
+    /* alloc memory */
+    pSocket= createSocketImpl();
+
+    /* create socket */
+    pSocket->m_Socket= socket(FAMILY_TO_NATIVE(Family),
+                                TYPE_TO_NATIVE(Type),
+                                PROTOCOL_TO_NATIVE(Protocol));
+
+    /* creation failed => free memory */
+    if(pSocket->m_Socket == OSL_INVALID_SOCKET)
+    {
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "socket creation failed: " << UnixErrnoString(nErrno) );
+
+        destroySocketImpl(pSocket);
+        pSocket= nullptr;
+    }
+    else
+    {
+        sal_Int32 nFlags=0;
+        /* set close-on-exec flag */
+        if ((nFlags = fcntl(pSocket->m_Socket, F_GETFD, 0)) != -1)
+        {
+            nFlags |= FD_CLOEXEC;
+            if (fcntl(pSocket->m_Socket, F_SETFD, nFlags) == -1)
+            {
+                pSocket->m_nLastError=errno;
+                int nErrno = errno;
+                SAL_WARN( "sal.osl", "failed changing socket flags: " << UnixErrnoString(nErrno) );
+            }
+        }
+        else
+        {
+            pSocket->m_nLastError=errno;
+        }
+    }
+
+    return pSocket;
+}
+
+void SAL_CALL osl_acquireSocket(oslSocket pSocket)
+{
+    osl_atomic_increment(&(pSocket->m_nRefCount));
+}
+
+void SAL_CALL osl_releaseSocket(oslSocket pSocket)
+{
+    if (pSocket && osl_atomic_decrement(&(pSocket->m_nRefCount)) == 0)
+    {
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+        if (pSocket->m_bIsAccepting)
+        {
+            SAL_WARN( "sal.osl", "attempt to destroy socket while accepting" );
+            return;
+        }
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+        osl_closeSocket(pSocket);
+        destroySocketImpl(pSocket);
+    }
+}
+
+void SAL_CALL osl_closeSocket(oslSocket pSocket)
+{
+    /* socket already invalid */
+    if (!pSocket)
+        return;
+
+    pSocket->m_nLastError=0;
+    sal_Int32 nFD = pSocket->m_Socket;
+
+    if (nFD == OSL_INVALID_SOCKET)
+        return;
+
+    pSocket->m_Socket = OSL_INVALID_SOCKET;
+
+    sal_Int32 nRet=0;
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pSocket->m_bIsInShutdown = true;
+
+    if (pSocket->m_bIsAccepting)
+    {
+        union {
+            struct sockaddr aSockAddr;
+            struct sockaddr_in aSockAddrIn;
+        } s;
+        socklen_t nSockLen = sizeof(s.aSockAddr);
+
+        nRet = getsockname(nFD, &s.aSockAddr, &nSockLen);
+        if (nRet < 0)
+        {
+            int nErrno = errno;
+            SAL_WARN( "sal.osl", "getsockname call failed: " << UnixErrnoString(nErrno) );
+        }
+
+        if (s.aSockAddr.sa_family == AF_INET)
+        {
+            if (s.aSockAddrIn.sin_addr.s_addr == htonl(INADDR_ANY))
+            {
+                s.aSockAddrIn.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+            }
+
+            int nConnFD = socket(AF_INET, SOCK_STREAM, 0);
+            if (nConnFD < 0)
+            {
+                int nErrno = errno;
+                SAL_WARN( "sal.osl", "socket call failed: " << UnixErrnoString(nErrno) );
+            }
+            else
+            {
+                nRet = connect(nConnFD, &s.aSockAddr, sizeof(s.aSockAddr));
+                if (nRet < 0)
+                {
+                    int nErrno = errno;
+                    SAL_WARN( "sal.osl", "connect call failed: " << UnixErrnoString(nErrno) );
+                }
+                close(nConnFD);
+            }
+        }
+        pSocket->m_bIsAccepting = false;
+    }
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+
+    nRet=close(nFD);
+    if (nRet != 0)
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "closeSocket close failed: " << UnixErrnoString(nErrno) );
+    }
+
+    pSocket->m_Socket = OSL_INVALID_SOCKET;
+}
+
+/* Note from function creator: I rely on the fact that oslSocketAddr and struct sockaddr
+   are the same! I don't like it very much but see no other easy way to conceal
+   the struct sockaddr from the eyes of the user. */
+oslSocketAddr SAL_CALL osl_getLocalAddrOfSocket(oslSocket pSocket)
+{
+    socklen_t AddrLen;
+    struct sockaddr Addr;
+    oslSocketAddr  pAddr;
+
+    if (pSocket == nullptr) /* ENOTSOCK */
+        return nullptr;
+
+    AddrLen= sizeof(struct sockaddr);
+
+    if (getsockname(pSocket->m_Socket, &Addr, &AddrLen) == OSL_SOCKET_ERROR)
+        return nullptr;
+
+    pAddr = createSocketAddrFromSystem( &Addr );
+    return pAddr;
+}
+
+oslSocketAddr SAL_CALL osl_getPeerAddrOfSocket(oslSocket pSocket)
+{
+    socklen_t AddrLen;
+    struct sockaddr Addr;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return nullptr;
+    }
+
+    pSocket->m_nLastError=0;
+    AddrLen= sizeof(struct sockaddr);
+
+    if(getpeername(pSocket->m_Socket, &Addr, &AddrLen) == OSL_SOCKET_ERROR)
+    {
+        pSocket->m_nLastError=errno;
+        return nullptr;
+    }
+    return createSocketAddrFromSystem( &Addr );
+}
+
+sal_Bool SAL_CALL osl_bindAddrToSocket(oslSocket pSocket,
+                             oslSocketAddr pAddr)
+{
+    int nRet;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    SAL_WARN_IF( !pAddr, "sal.osl", "undefined address" );
+    if ( pSocket == nullptr || pAddr == nullptr )
+    {
+        return false;
+    }
+
+    pSocket->m_nLastError=0;
+
+    nRet = bind(pSocket->m_Socket, &(pAddr->m_sockaddr), sizeof(struct sockaddr));
+
+    if ( nRet == OSL_SOCKET_ERROR)
+    {
+        pSocket->m_nLastError=errno;
+        return false;
+    }
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_listenOnSocket(oslSocket pSocket,
+                           sal_Int32 MaxPendingConnections)
+{
+    int nRet;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return false;
+    }
+
+    pSocket->m_nLastError=0;
+
+    nRet = listen(pSocket->m_Socket,
+                  MaxPendingConnections == -1 ?
+                  SOMAXCONN :
+                  MaxPendingConnections);
+    if ( nRet == OSL_SOCKET_ERROR)
+    {
+        pSocket->m_nLastError=errno;
+        return false;
+    }
+
+    return true;
+}
+
+oslSocketResult SAL_CALL osl_connectSocketTo(oslSocket pSocket,
+                                    oslSocketAddr pAddr,
+                                    const TimeValue* pTimeout)
+{
+    int      ReadyHandles;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+
+    if ( pSocket == nullptr )
+    {
+        return osl_Socket_Error;
+    }
+
+    pSocket->m_nLastError=0;
+
+    if (osl_isNonBlockingMode(pSocket))
+    {
+        if (connect(pSocket->m_Socket,
+                    &(pAddr->m_sockaddr),
+                    sizeof(struct sockaddr)) != OSL_SOCKET_ERROR)
+            return osl_Socket_Ok;
+
+        if (errno == EWOULDBLOCK || errno == EINPROGRESS)
+        {
+            pSocket->m_nLastError=EINPROGRESS;
+            return osl_Socket_InProgress;
+        }
+
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "connection failed: " << UnixErrnoString(nErrno) );
+        return osl_Socket_Error;
+    }
+
+    /* set socket temporarily to non-blocking */
+    if( !osl_enableNonBlockingMode(pSocket, true) )
+        SAL_WARN( "sal.osl", "failed to enable non-blocking mode" );
+
+    /* initiate connect */
+    if(connect(pSocket->m_Socket,
+               &(pAddr->m_sockaddr),
+               sizeof(struct sockaddr)) != OSL_SOCKET_ERROR)
+    {
+       /* immediate connection */
+        osl_enableNonBlockingMode(pSocket, false);
+
+        return osl_Socket_Ok;
+    }
+
+    /* really an error or just delayed? */
+    if (errno != EINPROGRESS)
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "connection failed: " << UnixErrnoString(nErrno) );
+
+        osl_enableNonBlockingMode(pSocket, false);
+        return osl_Socket_Error;
+    }
+
+    /* prepare poll set for socket  */
+    pollfd Set = {pSocket->m_Socket, POLLPRI | POLLOUT, 0};
+
+    /* poll */
+    ReadyHandles= poll(&Set, 1,
+                         pTimeout ? convertToMs(pTimeout) : -1);
+
+    if (ReadyHandles > 0)  /* connected */
+    {
+        if ( (Set.revents & POLLOUT) != 0 )
+        {
+            int nErrorCode = 0;
+            socklen_t nErrorSize = sizeof( nErrorCode );
+
+            int nSockOpt;
+
+            nSockOpt = getsockopt ( pSocket->m_Socket, SOL_SOCKET, SO_ERROR,
+                                    &nErrorCode, &nErrorSize );
+            if ( (nSockOpt == 0) && (nErrorCode == 0))
+            {
+                osl_enableNonBlockingMode(pSocket, false);
+                return osl_Socket_Ok;
+            }
+            else
+            {
+                pSocket->m_nLastError = (nSockOpt == 0) ? nErrorCode : errno;
+                return osl_Socket_Error;
+            }
+        }
+        else
+        {
+            return osl_Socket_Error;
+        }
+    }
+    else if (ReadyHandles < 0)  /* error */
+    {
+        if (errno == EBADF) /* most probably interrupted by close() */
+        {
+            /* do not access pSockImpl because it is about to be or */
+            /* already destroyed */
+            return osl_Socket_Interrupted;
+        }
+        pSocket->m_nLastError=errno;
+        return osl_Socket_Error;
+    }
+    else    /* timeout */
+    {
+        pSocket->m_nLastError=errno;
+        return osl_Socket_TimedOut;
+    }
+}
+
+oslSocket SAL_CALL osl_acceptConnectionOnSocket(oslSocket pSocket,
+                        oslSocketAddr* ppAddr)
+{
+    struct sockaddr Addr;
+    int Connection, Flags;
+    oslSocket pConnectionSockImpl;
+
+    socklen_t AddrLen = sizeof(struct sockaddr);
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return nullptr;
+    }
+
+    pSocket->m_nLastError=0;
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pSocket->m_bIsAccepting = true;
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+
+    if( ppAddr && *ppAddr )
+    {
+        osl_destroySocketAddr( *ppAddr );
+        *ppAddr = nullptr;
+    }
+
+    /* prevent Linux EINTR behaviour */
+    do
+    {
+        Connection = accept(pSocket->m_Socket, &Addr, &AddrLen);
+    } while (Connection == -1 && errno == EINTR);
+
+    /* accept failed? */
+    if( Connection == OSL_SOCKET_ERROR )
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "accept connection failed: " << UnixErrnoString(nErrno) );
+
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+        pSocket->m_bIsAccepting = false;
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+        return nullptr;
+    }
+
+    assert(AddrLen == sizeof(struct sockaddr));
+
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    if ( pSocket->m_bIsInShutdown )
+    {
+        close(Connection);
+        SAL_WARN( "sal.osl", "close while accept" );
+        return nullptr;
+    }
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+
+    if(ppAddr)
+    {
+        *ppAddr= createSocketAddrFromSystem(&Addr);
+    }
+
+    /* alloc memory */
+    pConnectionSockImpl= createSocketImpl();
+
+    /* set close-on-exec flag */
+    if ((Flags = fcntl(Connection, F_GETFD, 0)) != -1)
+    {
+        Flags |= FD_CLOEXEC;
+        if (fcntl(Connection, F_SETFD, Flags) == -1)
+        {
+            pSocket->m_nLastError=errno;
+            int nErrno = errno;
+            SAL_WARN( "sal.osl", "fcntl failed: " << UnixErrnoString(nErrno) );
+        }
+
+    }
+
+    pConnectionSockImpl->m_Socket           = Connection;
+    pConnectionSockImpl->m_nLastError       = 0;
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    pConnectionSockImpl->m_bIsAccepting     = false;
+
+    pSocket->m_bIsAccepting = false;
+#endif /* CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT */
+    return pConnectionSockImpl;
+}
+
+sal_Int32 SAL_CALL osl_receiveSocket(oslSocket pSocket,
+                          void* pBuffer,
+                          sal_uInt32 BytesToRead,
+                          oslSocketMsgFlag Flag)
+{
+    int nRead;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return -1;
+    }
+
+    pSocket->m_nLastError=0;
+
+    do
+    {
+        nRead =  recv(pSocket->m_Socket,
+                      pBuffer,
+                      BytesToRead,
+                      MSG_FLAG_TO_NATIVE(Flag));
+    } while ( nRead < 0 && errno == EINTR );
+
+    if ( nRead < 0 )
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "receive socket [" << nRead << "] failed: " << UnixErrnoString(nErrno) );
+    }
+    else if ( nRead == 0 )
+    {
+        SAL_WARN( "sal.osl", "receive socket [" << nRead << "] failed: EOL" );
+    }
+
+    return nRead;
+}
+
+sal_Int32 SAL_CALL osl_receiveFromSocket(oslSocket pSocket,
+                              oslSocketAddr pSenderAddr,
+                              void* pBuffer,
+                              sal_uInt32 BufferSize,
+                              oslSocketMsgFlag Flag)
+{
+    int nRead;
+    struct sockaddr *pSystemSockAddr = nullptr;
+    socklen_t AddrLen = 0;
+    if( pSenderAddr )
+    {
+        AddrLen = sizeof( struct sockaddr );
+        pSystemSockAddr = &(pSenderAddr->m_sockaddr);
+    }
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return -1;
+    }
+
+    pSocket->m_nLastError=0;
+
+    nRead = recvfrom(pSocket->m_Socket,
+                     pBuffer,
+                     BufferSize,
+                     MSG_FLAG_TO_NATIVE(Flag),
+                     pSystemSockAddr,
+                     &AddrLen);
+
+    if ( nRead < 0 )
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "receive socket [" << nRead << "] failed: " << UnixErrnoString(nErrno) );
+    }
+    else if ( nRead == 0 )
+    {
+        SAL_WARN( "sal.osl", "receive socket [" << nRead << "] failed: EOL" );
+    }
+
+    return nRead;
+}
+
+sal_Int32 SAL_CALL osl_sendSocket(oslSocket pSocket,
+                       const void* pBuffer,
+                       sal_uInt32 BytesToSend,
+                       oslSocketMsgFlag Flag)
+{
+    int nWritten;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return -1;
+    }
+
+    pSocket->m_nLastError=0;
+
+    do
+    {
+        nWritten = send(pSocket->m_Socket,
+                        pBuffer,
+                        BytesToSend,
+                        MSG_FLAG_TO_NATIVE(Flag));
+    } while ( nWritten < 0 && errno == EINTR );
+
+    if ( nWritten < 0 )
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "send socket [" << nWritten << "] failed: " << UnixErrnoString(nErrno) );
+    }
+    else if ( nWritten == 0 )
+    {
+        SAL_WARN( "sal.osl", "send socket [" << nWritten << "] failed: EOL" );
+    }
+
+    return nWritten;
+}
+
+sal_Int32 SAL_CALL osl_sendToSocket(oslSocket pSocket,
+                         oslSocketAddr ReceiverAddr,
+                         const void* pBuffer,
+                         sal_uInt32 BytesToSend,
+                         oslSocketMsgFlag Flag)
+{
+    int nWritten;
+
+    struct sockaddr *pSystemSockAddr = nullptr;
+    int AddrLen = 0;
+    if( ReceiverAddr )
+    {
+        pSystemSockAddr = &(ReceiverAddr->m_sockaddr);
+        AddrLen = sizeof( struct sockaddr );
+    }
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return -1;
+    }
+
+    pSocket->m_nLastError=0;
+
+    /* ReceiverAddr might be 0 when used on a connected socket. */
+    /* Then sendto should behave like send. */
+
+    nWritten = sendto(pSocket->m_Socket,
+                      pBuffer,
+                      BytesToSend,
+                      MSG_FLAG_TO_NATIVE(Flag),
+                      pSystemSockAddr,
+                      AddrLen);
+
+    if ( nWritten < 0 )
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "send socket [" << nWritten << "] failed: " << UnixErrnoString(nErrno) );
+    }
+    else if ( nWritten == 0 )
+    {
+        SAL_WARN( "sal.osl", "send socket [" << nWritten << "] failed: EOL" );
+    }
+
+    return nWritten;
+}
+
+sal_Int32 SAL_CALL osl_readSocket (
+    oslSocket pSocket, void *pBuffer, sal_Int32 n )
+{
+    sal_uInt8 * Ptr = static_cast<sal_uInt8 *>(pBuffer);
+    sal_uInt32 BytesRead= 0;
+    sal_uInt32 BytesToRead= n;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+
+    /* loop until all desired bytes were read or an error occurred */
+    while (BytesToRead > 0)
+    {
+        sal_Int32 RetVal;
+        RetVal= osl_receiveSocket(pSocket,
+                                   Ptr,
+                                   BytesToRead,
+                                   osl_Socket_MsgNormal);
+
+        /* error occurred? */
+        if(RetVal <= 0)
+        {
+            break;
+        }
+
+        BytesToRead -= RetVal;
+        BytesRead += RetVal;
+        Ptr += RetVal;
+    }
+
+    return BytesRead;
+}
+
+sal_Int32 SAL_CALL osl_writeSocket(
+    oslSocket pSocket, const void *pBuffer, sal_Int32 n )
+{
+    /* loop until all desired bytes were send or an error occurred */
+    sal_uInt32 BytesSend= 0;
+    sal_uInt32 BytesToSend= n;
+    sal_uInt8 const *Ptr = static_cast<sal_uInt8 const *>(pBuffer);
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+
+    while (BytesToSend > 0)
+    {
+        sal_Int32 RetVal;
+
+        RetVal= osl_sendSocket( pSocket,Ptr,BytesToSend,osl_Socket_MsgNormal);
+
+        /* error occurred? */
+        if(RetVal <= 0)
+        {
+            break;
+        }
+
+        BytesToSend -= RetVal;
+        BytesSend += RetVal;
+        Ptr += RetVal;
+
+    }
+    return BytesSend;
+}
+
+static bool socket_poll (
+    oslSocket        pSocket,
+    const TimeValue* pTimeout,
+    short            nEvent)
+{
+    struct pollfd fds;
+    int           timeout;
+    int           result;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if (pSocket == nullptr)
+      return false; /* EINVAL */
+
+    pSocket->m_nLastError = 0;
+
+    fds.fd      = pSocket->m_Socket;
+    fds.events  = nEvent;
+    fds.revents = 0;
+
+    timeout = -1;
+    if (pTimeout)
+    {
+        timeout  = convertToMs(pTimeout);
+    }
+
+    result = poll (&fds, 1, timeout);
+    if (result < 0)
+    {
+        pSocket->m_nLastError = errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "poll failed: " << UnixErrnoString(nErrno) );
+        return false;
+    }
+    if (result == 0)
+    {
+        /* Timeout */
+        return false;
+    }
+
+    return ((fds.revents & nEvent) == nEvent);
+}
+
+sal_Bool SAL_CALL osl_isReceiveReady (
+    oslSocket pSocket, const TimeValue* pTimeout)
+{
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if (pSocket == nullptr)
+    {
+        /* ENOTSOCK */
+        return false;
+    }
+
+    return socket_poll (pSocket, pTimeout, POLLIN);
+}
+
+sal_Bool SAL_CALL osl_isSendReady (
+    oslSocket pSocket, const TimeValue* pTimeout)
+{
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if (pSocket == nullptr)
+    {
+        /* ENOTSOCK */
+        return false;
+    }
+
+    return socket_poll (pSocket, pTimeout, POLLOUT);
+}
+
+sal_Bool SAL_CALL osl_isExceptionPending (
+    oslSocket pSocket, const TimeValue* pTimeout)
+{
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if (pSocket == nullptr)
+    {
+        /* ENOTSOCK */
+        return false;
+    }
+
+    return socket_poll (pSocket, pTimeout, POLLPRI);
+}
+
+sal_Bool SAL_CALL osl_shutdownSocket(oslSocket pSocket,
+                           oslSocketDirection Direction)
+{
+    int nRet;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return false;
+    }
+
+    pSocket->m_nLastError=0;
+
+    nRet=shutdown(pSocket->m_Socket, DIRECTION_TO_NATIVE(Direction));
+    if (nRet != 0 )
+    {
+        pSocket->m_nLastError=errno;
+        int nErrno = errno;
+        SAL_WARN( "sal.osl", "shutdown failed: " << UnixErrnoString(nErrno) );
+    }
+    return (nRet==0);
+}
+
+sal_Int32 SAL_CALL osl_getSocketOption(oslSocket pSocket,
+                            oslSocketOptionLevel    Level,
+                            oslSocketOption         Option,
+                            void*                   pBuffer,
+                            sal_uInt32                  BufferLen)
+{
+    socklen_t nOptLen = static_cast<socklen_t>(BufferLen);
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return -1;
+    }
+
+    pSocket->m_nLastError=0;
+
+    if(getsockopt(pSocket->m_Socket,
+                  OPTION_LEVEL_TO_NATIVE(Level),
+                  OPTION_TO_NATIVE(Option),
+                  pBuffer,
+                  &nOptLen) == -1)
+    {
+        pSocket->m_nLastError=errno;
+        return -1;
+    }
+
+    return nOptLen;
+}
+
+sal_Bool SAL_CALL osl_setSocketOption(oslSocket pSocket,
+                            oslSocketOptionLevel    Level,
+                            oslSocketOption         Option,
+                            void*                   pBuffer,
+                            sal_uInt32                  BufferLen)
+{
+    int nRet;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return false;
+    }
+
+    pSocket->m_nLastError=0;
+
+    nRet = setsockopt(pSocket->m_Socket,
+                      OPTION_LEVEL_TO_NATIVE(Level),
+                      OPTION_TO_NATIVE(Option),
+                      pBuffer,
+                      BufferLen);
+
+    if ( nRet < 0 )
+    {
+        pSocket->m_nLastError=errno;
+        return false;
+    }
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_enableNonBlockingMode(oslSocket pSocket,
+                                  sal_Bool On)
+{
+    int flags;
+    int nRet;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return false;
+    }
+
+    pSocket->m_nLastError=0;
+
+    flags = fcntl(pSocket->m_Socket, F_GETFL, 0);
+
+    if (On)
+        flags |= O_NONBLOCK;
+    else
+        flags &= ~(O_NONBLOCK);
+
+    nRet = fcntl(pSocket->m_Socket, F_SETFL, flags);
+
+    if  ( nRet < 0 )
+    {
+        pSocket->m_nLastError=errno;
+        return false;
+    }
+
+    return true;
+}
+
+sal_Bool SAL_CALL osl_isNonBlockingMode(oslSocket pSocket)
+{
+    int flags;
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return false;
+    }
+
+    pSocket->m_nLastError=0;
+
+    flags = fcntl(pSocket->m_Socket, F_GETFL, 0);
+
+    if (flags == -1 || !(flags & O_NONBLOCK))
+        return false;
+
+    return true;
+}
+
+oslSocketType SAL_CALL osl_getSocketType(oslSocket pSocket)
+{
+    int Type=0;
+    socklen_t TypeSize= sizeof(Type);
+
+    SAL_WARN_IF( !pSocket, "sal.osl", "undefined socket" );
+    if ( pSocket == nullptr )
+    {
+        return osl_Socket_TypeInvalid;
+    }
+
+    pSocket->m_nLastError=0;
+
+    if(getsockopt(pSocket->m_Socket,
+                  OPTION_LEVEL_TO_NATIVE(osl_Socket_LevelSocket),
+                  OPTION_TO_NATIVE(osl_Socket_OptionType),
+                  &Type,
+                  &TypeSize) == -1)
+    {
+        /* error */
+        pSocket->m_nLastError=errno;
+        return osl_Socket_TypeInvalid;
+    }
+
+    return TYPE_FROM_NATIVE(Type);
+
+}
+
+void SAL_CALL osl_getLastSocketErrorDescription(oslSocket Socket, rtl_uString **ustrError)
+{
+    char pszError[1024];
+
+    pszError[0] = '\0';
+
+    osl_psz_getLastSocketErrorDescription(Socket,pszError,sizeof(pszError));
+
+    rtl_uString_newFromAscii(ustrError,pszError);
+}
+
+void osl_psz_getLastSocketErrorDescription(oslSocket pSocket, char* pBuffer, sal_uInt32 BufferSize)
+{
+    /* make sure pBuffer will be a zero-terminated string even when strncpy has to cut */
+    pBuffer[BufferSize-1]= '\0';
+
+    if ( pSocket == nullptr )
+    {
+        strncpy(pBuffer, strerror(EINVAL), BufferSize-1);
+        return;
+    }
+
+    strncpy(pBuffer, strerror(pSocket->m_nLastError), BufferSize-1);
+}
+
+oslSocketError SAL_CALL osl_getLastSocketError(oslSocket pSocket)
+{
+    if ( pSocket == nullptr )
+    {
+        return ERROR_FROM_NATIVE(EINVAL);
+    }
+
+    return ERROR_FROM_NATIVE(pSocket->m_nLastError);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/sockimpl.hxx b/sal/osl/unx/sockimpl.hxx
new file mode 100644
index 000000000..1a9bc1f9e
--- /dev/null
+++ b/sal/osl/unx/sockimpl.hxx
@@ -0,0 +1,61 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_SOCKIMPL_HXX
+#define INCLUDED_SAL_OSL_UNX_SOCKIMPL_HXX
+
+#include <osl/pipe.h>
+#include <osl/socket.h>
+#include <osl/interlck.h>
+
+#include "system.hxx"
+
+#if defined(LINUX) || defined(FREEBSD) || defined(NETBSD)
+#define CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT 1
+#endif
+
+struct oslSocketImpl {
+    int                 m_Socket;
+    int                 m_nLastError;
+    oslInterlockedCount m_nRefCount;
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    bool                m_bIsAccepting;
+    bool                m_bIsInShutdown;
+#endif
+};
+
+struct oslSocketAddrImpl
+{
+    struct sockaddr m_sockaddr;
+};
+
+struct oslPipeImpl {
+    int  m_Socket;
+    char m_Name[sizeof sockaddr_un::sun_path];
+    oslInterlockedCount m_nRefCount;
+    bool m_bClosed;
+#if defined(CLOSESOCKET_DOESNT_WAKE_UP_ACCEPT)
+    bool m_bIsAccepting;
+    bool m_bIsInShutdown;
+#endif
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/soffice.cxx b/sal/osl/unx/soffice.cxx
new file mode 100644
index 000000000..bcead388b
--- /dev/null
+++ b/sal/osl/unx/soffice.cxx
@@ -0,0 +1,25 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#include <sal/config.h>
+
+#include <atomic>
+
+#include "soffice.hxx"
+
+namespace
+{
+std::atomic<bool> flag(false);
+}
+
+void sal::detail::setSoffice() { flag = true; }
+
+bool sal::detail::isSoffice() { return flag; }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/sal/osl/unx/soffice.hxx b/sal/osl/unx/soffice.hxx
new file mode 100644
index 000000000..da1b684af
--- /dev/null
+++ b/sal/osl/unx/soffice.hxx
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_SOFFICE_HXX
+#define INCLUDED_SAL_OSL_UNX_SOFFICE_HXX
+
+#include <sal/config.h>
+
+// Used to communicate special sal::detail::InitializeSoffice sal_detail_initialize call:
+
+namespace sal::detail
+{
+void setSoffice();
+
+bool isSoffice();
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/sal/osl/unx/system.cxx b/sal/osl/unx/system.cxx
new file mode 100644
index 000000000..875f41016
--- /dev/null
+++ b/sal/osl/unx/system.cxx
@@ -0,0 +1,167 @@
+/* -*- 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: */
diff --git a/sal/osl/unx/system.hxx b/sal/osl/unx/system.hxx
new file mode 100644
index 000000000..8b1f1dccc
--- /dev/null
+++ b/sal/osl/unx/system.hxx
@@ -0,0 +1,406 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_SYSTEM_HXX
+#define INCLUDED_SAL_OSL_UNX_SYSTEM_HXX
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <errno.h>
+#include <stdarg.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <signal.h>
+#include <utime.h>
+
+#include <pwd.h>
+
+#include <netdb.h>
+
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <sys/types.h>
+
+/* Make sockets of type AF_UNIX use underlying FS rights */
+#if defined(__sun) && !defined(_XOPEN_SOURCE)
+#   define _XOPEN_SOURCE 500
+#   include <sys/socket.h>
+#   undef _XOPEN_SOURCE
+#else
+#   include <sys/socket.h>
+#endif
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#ifdef SYSV
+#   include <sys/utsname.h>
+#endif
+
+#ifdef LINUX
+#   ifndef __USE_GNU
+#   define __USE_GNU
+#   endif
+
+#   include <shadow.h>
+#   include <pthread.h>
+#   include <sys/file.h>
+#   include <sys/ioctl.h>
+#   include <sys/uio.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <dlfcn.h>
+#   include <endian.h>
+#   include <sys/time.h>
+#   define  IORESOURCE_TRANSFER_BSD
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#   define  pthread_testcancel()
+#   define  NO_PTHREAD_PRIORITY
+#   define  PTHREAD_SIGACTION           pthread_sigaction
+
+#   ifndef ETIME
+#       define ETIME ETIMEDOUT
+#   endif
+
+#endif
+
+#ifdef HAIKU
+#   include <shadow.h>
+#   include <pthread.h>
+#   include <sys/file.h>
+#   include <sys/ioctl.h>
+#   include <sys/uio.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <dlfcn.h>
+#   include <endian.h>
+#   include <sys/time.h>
+#   define  IORESOURCE_TRANSFER_BSD
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#   define  pthread_testcancel()
+#   define  NO_PTHREAD_PRIORITY
+#   define  NO_PTHREAD_RTL
+#   define  PTHREAD_SIGACTION           pthread_sigaction
+
+#   ifndef ETIME
+#       define ETIME ETIMEDOUT
+#   endif
+#   define SIGIOT SIGABRT
+#   define SOCK_RDM 0
+//  hack: Haiku defines SOL_SOCKET as -1, but this makes GCC complain about
+//  narrowing conversion
+#   undef SOL_SOCKET
+#   define SOL_SOCKET (sal_uInt32) -1
+
+#endif
+
+#if defined(ANDROID)
+#   include <pthread.h>
+#   include <sys/file.h>
+#   include <sys/ioctl.h>
+#   include <sys/uio.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <dlfcn.h>
+#   include <endian.h>
+#   include <sys/time.h>
+#   define  IORESOURCE_TRANSFER_BSD
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#   define  pthread_testcancel()
+#   define  NO_PTHREAD_PRIORITY
+#endif
+
+#ifdef NETBSD
+#   define  NO_PTHREAD_RTL
+#endif
+
+#ifdef FREEBSD
+#   ifndef ETIME
+#       define ETIME ETIMEDOUT
+#   endif
+#   include <pthread.h>
+#   include <sys/sem.h>
+#   include <dlfcn.h>
+#   include <sys/filio.h>
+#   include <sys/ioctl.h>
+#   include <sys/param.h>
+#   include <sys/time.h>
+#   include <sys/uio.h>
+#   include <sys/exec.h>
+#   include <vm/vm.h>
+#   include <vm/vm_param.h>
+#   include <vm/pmap.h>
+#   include <vm/swap_pager.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   define  IORESOURCE_TRANSFER_BSD
+#   include <machine/endian.h>
+#   define  NO_PTHREAD_RTL
+#endif
+
+#ifdef OPENBSD
+#   define  ETIME ETIMEDOUT
+#   include <pthread.h>
+#   include <sys/sem.h>
+#   include <dlfcn.h>
+#   include <sys/filio.h>
+#   include <sys/ioctl.h>
+#   include <sys/param.h>
+#   include <sys/time.h>
+#   include <sys/uio.h>
+#   include <sys/exec.h>
+#       include <sys/un.h>
+#   include <netinet/tcp.h>
+#       define  IORESOURCE_TRANSFER_BSD
+#   include <machine/endian.h>
+#      define  PTR_SIZE_T(s)   ((size_t *)&(s))
+#       define  IORESOURCE_TRANSFER_BSD
+#       define  IOCHANNEL_TRANSFER_BSD_RENO
+#       define  pthread_testcancel()
+#       define  NO_PTHREAD_PRIORITY
+#       define  NO_PTHREAD_RTL
+#       define  PTHREAD_SIGACTION                       pthread_sigaction
+#endif
+
+#if defined(DRAGONFLY) || defined(NETBSD)
+#   define  ETIME ETIMEDOUT
+#   include <pthread.h>
+#   include <sys/sem.h>
+#   include <dlfcn.h>
+#   include <sys/filio.h>
+#   include <sys/ioctl.h>
+#   include <sys/param.h>
+#   include <sys/time.h>
+#   include <sys/uio.h>
+#   include <sys/exec.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <machine/endian.h>
+#   define  IORESOURCE_TRANSFER_BSD
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#endif
+
+#ifdef AIX
+#   define AF_IPX -1
+#   include <strings.h>
+#   include <pthread.h>
+#   include <dlfcn.h>
+#   include <sys/time.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <sys/machine.h>
+#   define  SLEEP_TIMESPEC(timespec)    nsleep(&timespec, 0)
+#   define  LIBPATH "LIBPATH"
+#endif
+
+#ifdef __sun
+#   include <shadow.h>
+#   include <sys/un.h>
+#   include <stropts.h>
+#   include <pthread.h>
+#   include <netinet/tcp.h>
+#   include <sys/filio.h>
+#   include <dlfcn.h>
+#   include <sys/isa_defs.h>
+#   define  IORESOURCE_TRANSFER_SYSV
+#   define  IOCHANNEL_TRANSFER_BSD
+#   define  LIBPATH "LD_LIBRARY_PATH"
+#endif
+
+#ifdef MACOSX
+#define TimeValue CFTimeValue      // Do not conflict with TimeValue in sal/inc/osl/time.h
+#include <Carbon/Carbon.h>
+#undef TimeValue
+#   ifndef ETIME
+#       define  ETIME ETIMEDOUT
+#   endif
+#   include <dlfcn.h>
+#   include <pthread.h>
+#   include <sys/file.h>
+#   include <sys/ioctl.h>
+#   include <sys/uio.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <machine/endian.h>
+#   include <sys/time.h>
+#   include <mach-o/dyld.h>
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#   define  NO_PTHREAD_RTL
+/* for NSGetArgc/Argv/Environ */
+#       include <crt_externs.h>
+int macxp_resolveAlias(char *path, int buflen);
+#endif
+
+#ifdef IOS
+#   ifndef ETIME
+#       define  ETIME ETIMEDOUT
+#   endif
+#   include <dlfcn.h>
+#   include <pthread.h>
+#   include <sys/file.h>
+#   include <sys/ioctl.h>
+#   include <sys/uio.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <machine/endian.h>
+#   include <sys/time.h>
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#   define  NO_PTHREAD_RTL
+#endif
+
+#ifdef EMSCRIPTEN
+#   ifndef ETIME
+#       define  ETIME ETIMEDOUT
+#   endif
+#   include <pthread.h>
+#   include <sys/file.h>
+#   include <sys/ioctl.h>
+#   include <sys/uio.h>
+#   include <sys/un.h>
+#   include <netinet/tcp.h>
+#   include <dlfcn.h>
+#   include <endian.h>
+#   include <sys/time.h>
+#   define  IORESOURCE_TRANSFER_BSD
+#   define  IOCHANNEL_TRANSFER_BSD_RENO
+#   define  pthread_testcancel()
+#   define  NO_PTHREAD_PRIORITY
+#   define INIT_GROUPS(name, gid) false
+#endif
+
+#if !defined(_WIN32)  && \
+    !defined(LINUX)   && !defined(NETBSD) && !defined(FREEBSD) && \
+    !defined(AIX)     && \
+    !defined(__sun) && !defined(MACOSX) && \
+    !defined(OPENBSD) && !defined(DRAGONFLY) && \
+    !defined(IOS) && !defined(ANDROID) && \
+    !defined(HAIKU) && !defined(EMSCRIPTEN)
+#   error "Target platform not specified!"
+#endif
+
+#ifndef PTR_FD_SET
+#   define PTR_FD_SET(s)                (&(s))
+#endif
+
+#ifndef NORMALIZE_TIMESPEC
+#   define NORMALIZE_TIMESPEC(timespec) \
+          timespec . tv_sec  += timespec . tv_nsec / 1000000000; \
+          timespec . tv_nsec %= 1000000000;
+#endif
+
+#ifndef SET_TIMESPEC
+#   define SET_TIMESPEC(timespec, sec, nsec) \
+          timespec . tv_sec  = (sec);  \
+          timespec . tv_nsec = (nsec); \
+        NORMALIZE_TIMESPEC(timespec);
+#endif
+
+#ifndef SLEEP_TIMESPEC
+#   define SLEEP_TIMESPEC(timespec) nanosleep(&timespec, nullptr)
+#endif
+
+#ifndef INIT_GROUPS
+#   define  INIT_GROUPS(name, gid)  ((setgid((gid)) == 0) && (initgroups((name), (gid)) == 0))
+#endif
+
+#ifndef PTHREAD_NONE
+#   define PTHREAD_NONE                 _pthread_none_
+#   ifndef PTHREAD_NONE_INIT
+#       define PTHREAD_NONE_INIT        ((pthread_t)-1)
+#   endif
+#endif
+
+#ifndef PTHREAD_ATTR_DEFAULT
+#   define PTHREAD_ATTR_DEFAULT         nullptr
+#endif
+#ifndef PTHREAD_MUTEXATTR_DEFAULT
+#   define PTHREAD_MUTEXATTR_DEFAULT    nullptr
+#endif
+#ifndef PTHREAD_CONDATTR_DEFAULT
+#   define PTHREAD_CONDATTR_DEFAULT     nullptr
+#endif
+
+#ifndef PTHREAD_SIGACTION
+#   define PTHREAD_SIGACTION sigaction
+#endif
+
+#ifndef STAT_PARENT
+#   define STAT_PARENT                  lstat
+#endif
+
+/* socket options which might not be defined on all unx flavors */
+#ifndef SO_ACCEPTCONN
+#   define SO_ACCEPTCONN    0
+#endif
+#ifndef SO_SNDLOWAT
+#   define SO_SNDLOWAT      0
+#endif
+#ifndef SO_RCVLOWAT
+#   define SO_RCVLOWAT      0
+#endif
+#ifndef SO_SNDTIMEO
+#   define  SO_SNDTIMEO     0
+#endif
+#ifndef SO_RCVTIMEO
+#   define SO_RCVTIMEO      0
+#endif
+#ifndef SO_USELOOPBACK
+#   define SO_USELOOPBACK   0
+#endif
+#ifndef MSG_MAXIOVLEN
+#   define MSG_MAXIOVLEN    0
+#endif
+
+/* BEGIN HACK */
+/* dummy define and declarations for IPX should be replaced by */
+/* original ipx headers when these are available for this platform */
+
+#ifndef SA_FAMILY_DECL
+#   define SA_FAMILY_DECL short sa_family
+#endif
+
+#define NSPROTO_IPX      1000
+#define NSPROTO_SPX      1256
+#define NSPROTO_SPXII    1257
+
+/* END HACK */
+
+#ifdef NO_PTHREAD_RTL
+#if !defined FREEBSD
+#if !defined NETBSD
+struct passwd *getpwent_r(struct passwd *pwd, char *buffer,  int buflen);
+#endif
+extern struct spwd *getspnam_r(const char *name, struct spwd *result,
+                               char *buffer, int buflen);
+
+#if !defined MACOSX
+struct tm *localtime_r(const time_t *timep, struct tm *buffer);
+struct tm *gmtime_r(const time_t *timep, struct tm *buffer);
+#endif
+#endif /* !defined(FREEBSD) */
+#endif
+
+#endif // INCLUDED_SAL_OSL_UNX_SYSTEM_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/system.mm b/sal/osl/unx/system.mm
new file mode 100644
index 000000000..7495a3e73
--- /dev/null
+++ b/sal/osl/unx/system.mm
@@ -0,0 +1 @@
+#include "system.cxx"
diff --git a/sal/osl/unx/tempfile.cxx b/sal/osl/unx/tempfile.cxx
new file mode 100644
index 000000000..29a4d453f
--- /dev/null
+++ b/sal/osl/unx/tempfile.cxx
@@ -0,0 +1,340 @@
+/* -*- 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 <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "system.hxx"
+#include <osl/file.h>
+#include <osl/thread.h>
+#include <rtl/ustrbuf.h>
+#include <osl/diagnose.h>
+#include <sal/macros.h>
+
+#include "file_url.hxx"
+#include "file_impl.hxx"
+
+#include <cassert>
+
+oslFileError SAL_CALL osl_getTempDirURL( rtl_uString** pustrTempDir )
+{
+    oslFileError error;
+    /* described in environ(7) */
+    const char *pValue = getenv( "TMPDIR" );
+    rtl_uString *ustrTempPath = nullptr;
+
+    if ( !pValue )
+        pValue = getenv( "TEMP" );
+
+    if ( !pValue )
+        pValue = getenv( "TMP" );
+
+    if ( !pValue )
+        pValue = "/tmp";
+
+    auto nLen = strlen(pValue);
+    while (nLen > 1 && pValue[nLen - 1] == '/') // Allow path consisting of single "/"
+        --nLen;
+    rtl_string2UString( &ustrTempPath, pValue, nLen, osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+    assert(ustrTempPath);
+    error = osl_getFileURLFromSystemPath( ustrTempPath, pustrTempDir );
+    rtl_uString_release( ustrTempPath );
+
+    return error;
+}
+
+/******************************************************************
+ * Generates a random unique file name. We're using the scheme
+ * from the standard c-lib function mkstemp to generate a more
+ * or less random unique file name
+ *
+ * @param rand_name
+ *        receives the random name
+ ******************************************************************/
+
+const char LETTERS[]        = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
+const int  COUNT_OF_LETTERS = SAL_N_ELEMENTS(LETTERS) - 1;
+
+#define RAND_NAME_LENGTH 6
+
+static void osl_gen_random_name_impl_(rtl_uString** rand_name)
+{
+    static uint64_t value;
+
+    char     buffer[RAND_NAME_LENGTH];
+    struct   timeval tv;
+    uint64_t v;
+    int      i;
+
+    gettimeofday(&tv, nullptr);
+
+    value += (static_cast<uint64_t>(tv.tv_usec) << 16) ^ tv.tv_sec ^ getpid();
+
+    v = value;
+
+    for (i = 0; i < RAND_NAME_LENGTH; i++)
+    {
+        buffer[i] = LETTERS[v % COUNT_OF_LETTERS];
+        v        /= COUNT_OF_LETTERS;
+    }
+
+    rtl_string2UString(
+            rand_name,
+            buffer,
+            RAND_NAME_LENGTH,
+            RTL_TEXTENCODING_ASCII_US,
+            OSTRING_TO_OUSTRING_CVTFLAGS);
+
+    assert(*rand_name);
+}
+
+/*****************************************************************
+ * Helper function
+ * Either use the directory provided or the result of
+ * osl_getTempDirUrl and return it as system path and file url
+ ****************************************************************/
+
+static oslFileError osl_setup_base_directory_impl_(
+    rtl_uString*  pustrDirectoryURL,
+    rtl_uString** ppustr_base_dir)
+{
+    rtl_uString* dir_url = nullptr;
+    rtl_uString* dir     = nullptr;
+    oslFileError error   = osl_File_E_None;
+
+    if (pustrDirectoryURL)
+        rtl_uString_assign(&dir_url, pustrDirectoryURL);
+    else
+        error = osl_getTempDirURL(&dir_url);
+
+    if (error == osl_File_E_None)
+    {
+        error = getSystemPathFromFileURL_Ex(dir_url, &dir);
+        rtl_uString_release(dir_url);
+    }
+
+    if (error == osl_File_E_None)
+    {
+        rtl_uString_assign(ppustr_base_dir, dir);
+        rtl_uString_release(dir);
+    }
+
+    return error;
+}
+
+/*****************************************************************
+ * osl_setup_createTempFile_impl
+ * validate input parameter, setup variables
+ ****************************************************************/
+
+ static oslFileError osl_setup_createTempFile_impl_(
+     rtl_uString*   pustrDirectoryURL,
+    oslFileHandle* pHandle,
+    rtl_uString**  ppustrTempFileURL,
+    rtl_uString**  ppustr_base_dir,
+    bool*      b_delete_on_close)
+ {
+    oslFileError osl_error;
+
+    OSL_PRECOND(((nullptr != pHandle) || (nullptr != ppustrTempFileURL)), "Invalid parameter!");
+
+    if ((pHandle == nullptr) && (ppustrTempFileURL == nullptr))
+    {
+        osl_error = osl_File_E_INVAL;
+    }
+    else
+    {
+        osl_error = osl_setup_base_directory_impl_(
+            pustrDirectoryURL, ppustr_base_dir);
+
+        *b_delete_on_close = (ppustrTempFileURL == nullptr);
+    }
+
+    return osl_error;
+ }
+
+/*****************************************************************
+ * Create a unique file in the specified directory and return
+ * its name
+ ****************************************************************/
+
+static oslFileError osl_create_temp_file_impl_(
+    const rtl_uString* pustr_base_directory,
+    oslFileHandle* file_handle,
+    rtl_uString** ppustr_temp_file_name)
+{
+    rtl_uString*        rand_name        = nullptr;
+    sal_uInt32          len_base_dir     = 0;
+    rtl_uString*        tmp_file_path    = nullptr;
+    rtl_uString*        tmp_file_url     = nullptr;
+    sal_Int32           capacity         = 0;
+    oslFileError        osl_error        = osl_File_E_None;
+    sal_Int32           offset_file_name;
+    const sal_Unicode*  puchr;
+
+    OSL_PRECOND(pustr_base_directory, "Invalid Parameter");
+    OSL_PRECOND(file_handle, "Invalid Parameter");
+    OSL_PRECOND(ppustr_temp_file_name, "Invalid Parameter");
+
+    len_base_dir = rtl_uString_getLength(pustr_base_directory);
+
+    rtl_uString_new_WithLength(
+        &tmp_file_path,
+        (len_base_dir + 1 + RAND_NAME_LENGTH));
+    capacity = len_base_dir + 1 + RAND_NAME_LENGTH;
+
+    rtl_uStringbuffer_insert(
+        &tmp_file_path,
+        &capacity,
+        0,
+        rtl_uString_getStr(const_cast<rtl_uString*>(pustr_base_directory)),
+        len_base_dir);
+
+    offset_file_name = len_base_dir;
+
+    puchr = rtl_uString_getStr(tmp_file_path);
+
+    /* ensure that the last character is a '/' */
+
+    if (puchr[len_base_dir - 1] != '/')
+    {
+        rtl_uStringbuffer_insert_ascii(
+            &tmp_file_path,
+            &capacity,
+            len_base_dir,
+            "/",
+            1);
+
+        offset_file_name++;
+    }
+
+    while(true) /* try until success */
+    {
+        osl_gen_random_name_impl_(&rand_name);
+
+        rtl_uStringbuffer_insert(
+            &tmp_file_path,
+            &capacity,
+            offset_file_name,
+            rtl_uString_getStr(rand_name),
+            rtl_uString_getLength(rand_name));
+
+        osl_error = osl_getFileURLFromSystemPath(
+            tmp_file_path, &tmp_file_url);
+
+        if (osl_error == osl_File_E_None)
+        {
+            osl_error = openFile(
+                tmp_file_url,
+                file_handle,
+                osl_File_OpenFlag_Read |
+                osl_File_OpenFlag_Write |
+                osl_File_OpenFlag_Create,
+                S_IRUSR | S_IWUSR);
+        }
+
+        /* in case of error osl_File_E_EXIST we simply try again else we give up */
+
+        if (osl_error != osl_File_E_EXIST)
+        {
+            rtl_uString_release(rand_name);
+
+            if (tmp_file_url)
+                rtl_uString_release(tmp_file_url);
+
+            break;
+        }
+    } /* while(1) */
+
+    if (osl_error == osl_File_E_None)
+        rtl_uString_assign(ppustr_temp_file_name, tmp_file_path);
+
+    rtl_uString_release(tmp_file_path);
+
+    return osl_error;
+}
+
+oslFileError SAL_CALL osl_createTempFile(
+    rtl_uString*   pustrDirectoryURL,
+    oslFileHandle* pHandle,
+    rtl_uString**  ppustrTempFileURL)
+{
+    rtl_uString*  base_directory     = nullptr;
+    oslFileHandle temp_file_handle = nullptr;
+    bool      b_delete_on_close;
+    oslFileError  osl_error;
+
+    osl_error = osl_setup_createTempFile_impl_(
+        pustrDirectoryURL,
+        pHandle,
+        ppustrTempFileURL,
+        &base_directory,
+        &b_delete_on_close);
+
+    if (osl_error != osl_File_E_None)
+        return osl_error;
+
+    rtl_uString*  temp_file_name = nullptr;
+    osl_error = osl_create_temp_file_impl_(
+        base_directory, &temp_file_handle, &temp_file_name);
+
+    rtl_uString* temp_file_url = nullptr;
+    if (osl_error == osl_File_E_None)
+    {
+        osl_error = osl_getFileURLFromSystemPath(temp_file_name, &temp_file_url);
+        rtl_uString_release(temp_file_name);
+    }
+
+    if (osl_error == osl_File_E_None)
+    {
+        if (b_delete_on_close)
+        {
+            osl_error = osl_removeFile(temp_file_url);
+
+            if (osl_error == osl_File_E_None)
+            {
+                *pHandle = temp_file_handle;
+                temp_file_handle = nullptr;
+            }
+        }
+        else
+        {
+            if (pHandle)
+            {
+                *pHandle = temp_file_handle;
+                temp_file_handle = nullptr;
+            }
+
+            rtl_uString_assign(ppustrTempFileURL, temp_file_url);
+        }
+
+        rtl_uString_release(temp_file_url);
+    }
+
+    if (temp_file_handle)
+        osl_closeFile(temp_file_handle);
+
+    rtl_uString_release(base_directory);
+
+    return osl_error;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/thread.cxx b/sal/osl/unx/thread.cxx
new file mode 100644
index 000000000..b122c5f31
--- /dev/null
+++ b/sal/osl/unx/thread.cxx
@@ -0,0 +1,1102 @@
+/* -*- 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 <sal/config.h>
+
+#include <cassert>
+#include <cstddef>
+#include <limits>
+#include <functional>
+#include <mutex>
+
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+#include <string.h>
+#if defined(OPENBSD)
+#include <sched.h>
+#endif
+#ifdef __FreeBSD__
+#if __FreeBSD_version <= 1201517
+#include <pthread_np.h>
+#define pthread_setname_np pthread_set_name_np
+#endif
+#endif
+#include <config_options.h>
+#include <o3tl/safeint.hxx>
+#include <osl/thread.h>
+#include <osl/nlsupport.h>
+#include <rtl/textenc.h>
+#include <rtl/alloc.h>
+#include <sal/log.hxx>
+#include <sal/macros.h>
+#ifdef ANDROID
+#include <jni.h>
+#include <android/log.h>
+#include <osl/detail/android-bootstrap.h>
+#endif
+
+#if defined LINUX && ! defined __FreeBSD_kernel__
+#include <sys/syscall.h>
+#endif
+
+/****************************************************************************
+ * @@@ TODO @@@
+ *
+ * (1) 'osl_thread_priority_init_Impl()'
+ *     - insane assumption that initializing caller is main thread
+ *     - use _POSIX_THREAD_PRIORITY_SCHEDULING, not NO_PTHREAD_PRIORITY (?)
+ *     - POSIX doesn't require defined prio's for SCHED_OTHER (!)
+ *     - use SCHED_RR instead of SCHED_OTHER for defined behaviour (?)
+ * (2) 'oslThreadIdentifier' and '{insert|remove|lookup}ThreadId()'
+ *     - cannot reliably be applied to 'alien' threads;
+ *     - memory leak for 'alien' thread 'HashEntry's;
+ *     - use 'reinterpret_cast<unsigned long>(pthread_t)' as identifier
+ *       instead (?)
+ *     - if yes, change 'oslThreadIdentifier' to 'intptr_t' or similar
+ * (3) 'oslSigAlarmHandler()' (#71232#)
+ *     - [Under Solaris we get SIGALRM in e.g. pthread_join which terminates
+ *       the process. So we initialize our signal handling module and do
+ *       register a SIGALRM Handler which catches and ignores it]
+ *     - should this still happen, 'signal.c' needs to be fixed instead.
+ *
+ ****************************************************************************/
+
+#define THREADIMPL_FLAGS_TERMINATE  0x00001
+#define THREADIMPL_FLAGS_STARTUP    0x00002
+#define THREADIMPL_FLAGS_SUSPENDED  0x00004
+#define THREADIMPL_FLAGS_ACTIVE     0x00008
+#define THREADIMPL_FLAGS_ATTACHED   0x00010
+#define THREADIMPL_FLAGS_DESTROYED  0x00020
+
+namespace {
+
+typedef struct osl_thread_impl_st
+{
+    pthread_t           m_hThread;
+    oslThreadIdentifier m_Ident; /* @@@ see TODO @@@ */
+    short               m_Flags;
+    oslWorkerFunction   m_WorkerFunction;
+    void*               m_pData;
+    pthread_mutex_t     m_Lock;
+    pthread_cond_t      m_Cond;
+} Thread_Impl;
+
+#if !defined NO_PTHREAD_PRIORITY
+struct osl_thread_priority_st
+{
+    int m_Highest;
+    int m_Above_Normal;
+    int m_Normal;
+    int m_Below_Normal;
+    int m_Lowest;
+};
+#endif
+
+}
+
+#if !defined NO_PTHREAD_PRIORITY
+#define OSL_THREAD_PRIORITY_INITIALIZER { 127, 96, 64, 32, 0 }
+#endif
+
+static void osl_thread_priority_init_Impl();
+
+namespace {
+
+struct osl_thread_textencoding_st
+{
+    pthread_key_t    m_key;     /* key to store thread local text encoding */
+    rtl_TextEncoding m_default; /* the default text encoding */
+};
+
+}
+
+#define OSL_THREAD_TEXTENCODING_INITIALIZER { 0, RTL_TEXTENCODING_DONTKNOW }
+static void osl_thread_textencoding_init_Impl();
+
+namespace {
+
+struct osl_thread_global_st
+{
+    pthread_once_t                    m_once;
+#if !defined NO_PTHREAD_PRIORITY
+    struct osl_thread_priority_st     m_priority;
+#endif
+    struct osl_thread_textencoding_st m_textencoding;
+};
+
+}
+
+static struct osl_thread_global_st g_thread =
+{
+    PTHREAD_ONCE_INIT,
+#if !defined NO_PTHREAD_PRIORITY
+    OSL_THREAD_PRIORITY_INITIALIZER,
+#endif
+    OSL_THREAD_TEXTENCODING_INITIALIZER
+};
+
+static void osl_thread_init_Impl();
+
+static Thread_Impl* osl_thread_construct_Impl();
+static void         osl_thread_destruct_Impl (Thread_Impl ** ppImpl);
+
+static void* osl_thread_start_Impl (void * pData);
+static void  osl_thread_cleanup_Impl (Thread_Impl * pImpl);
+
+static oslThread osl_thread_create_Impl (
+    oslWorkerFunction pWorker, void * pThreadData, short nFlags);
+
+/* @@@ see TODO @@@ */
+static oslThreadIdentifier insertThreadId (pthread_t hThread);
+static oslThreadIdentifier lookupThreadId (pthread_t hThread);
+static void                removeThreadId (pthread_t hThread);
+
+static void osl_thread_init_Impl()
+{
+    osl_thread_priority_init_Impl();
+    osl_thread_textencoding_init_Impl();
+}
+
+Thread_Impl* osl_thread_construct_Impl()
+{
+    Thread_Impl* pImpl = new Thread_Impl;
+    memset (pImpl, 0, sizeof(Thread_Impl));
+
+    pthread_mutex_init (&(pImpl->m_Lock), PTHREAD_MUTEXATTR_DEFAULT);
+    pthread_cond_init  (&(pImpl->m_Cond), PTHREAD_CONDATTR_DEFAULT);
+    return pImpl;
+}
+
+static void osl_thread_destruct_Impl (Thread_Impl ** ppImpl)
+{
+    assert(ppImpl);
+    if (*ppImpl)
+    {
+        pthread_cond_destroy  (&((*ppImpl)->m_Cond));
+        pthread_mutex_destroy (&((*ppImpl)->m_Lock));
+
+        delete *ppImpl;
+        (*ppImpl) = nullptr;
+    }
+}
+
+static void osl_thread_cleanup_Impl (Thread_Impl * pImpl)
+{
+    pthread_t thread;
+    bool attached;
+    bool destroyed;
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    thread = pImpl->m_hThread;
+    attached = (pImpl->m_Flags & THREADIMPL_FLAGS_ATTACHED) != 0;
+    destroyed = (pImpl->m_Flags & THREADIMPL_FLAGS_DESTROYED) != 0;
+    pImpl->m_Flags &= ~(THREADIMPL_FLAGS_ACTIVE | THREADIMPL_FLAGS_ATTACHED);
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+
+    /* release oslThreadIdentifier @@@ see TODO @@@ */
+    removeThreadId (thread);
+
+    if (attached)
+    {
+        pthread_detach (thread);
+    }
+
+    if (destroyed)
+    {
+        osl_thread_destruct_Impl (&pImpl);
+    }
+}
+
+static void* osl_thread_start_Impl (void* pData)
+{
+    bool terminate;
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(pData);
+
+    assert(pImpl);
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    /* request oslThreadIdentifier @@@ see TODO @@@ */
+    pImpl->m_Ident = insertThreadId (pImpl->m_hThread);
+
+    /* signal change from STARTUP to ACTIVE state */
+    pImpl->m_Flags &= ~THREADIMPL_FLAGS_STARTUP;
+    pImpl->m_Flags |=  THREADIMPL_FLAGS_ACTIVE;
+    pthread_cond_signal (&(pImpl->m_Cond));
+
+    /* Check if thread is started in SUSPENDED state */
+    while (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
+    {
+        /* wait until SUSPENDED flag is cleared */
+        pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
+    }
+
+    /* check for SUSPENDED to TERMINATE state change */
+    terminate = ((pImpl->m_Flags & THREADIMPL_FLAGS_TERMINATE) > 0);
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+
+    if (!terminate)
+    {
+#ifdef ANDROID
+        JNIEnv* env = 0;
+        int res = (*lo_get_javavm()).AttachCurrentThread(&env, NULL);
+        __android_log_print(ANDROID_LOG_INFO, "LibreOffice", "New sal thread started and attached res=%d", res);
+#endif
+        /* call worker function */
+        pImpl->m_WorkerFunction(pImpl->m_pData);
+
+#ifdef ANDROID
+        res = (*lo_get_javavm()).DetachCurrentThread();
+        __android_log_print(ANDROID_LOG_INFO, "LibreOffice", "Detached finished sal thread res=%d", res);
+#endif
+    }
+
+    osl_thread_cleanup_Impl (pImpl);
+    return nullptr;
+}
+
+static oslThread osl_thread_create_Impl (
+    oslWorkerFunction pWorker,
+    void*             pThreadData,
+    short             nFlags)
+{
+    Thread_Impl* pImpl;
+#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
+    pthread_attr_t attr;
+    size_t stacksize;
+#endif
+    int nRet=0;
+
+    pImpl = osl_thread_construct_Impl();
+    if (!pImpl)
+        return nullptr; /* ENOMEM */
+
+    pImpl->m_WorkerFunction = pWorker;
+    pImpl->m_pData = pThreadData;
+    pImpl->m_Flags = nFlags | THREADIMPL_FLAGS_STARTUP;
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
+    if (pthread_attr_init(&attr) != 0)
+        return nullptr;
+
+#if defined OPENBSD
+    stacksize = 262144;
+#elif !ENABLE_RUNTIME_OPTIMIZATIONS
+    stacksize = 12 * 1024 * 1024; // 8MB is not enough for ASAN on x86-64
+#else
+    stacksize = 1 * 1024 * 1024; // macOS default for non-main threads (512kB) is not enough...
+#endif
+    if (pthread_attr_setstacksize(&attr, stacksize) != 0) {
+        pthread_attr_destroy(&attr);
+        return nullptr;
+    }
+#endif
+
+    if ((nRet = pthread_create (
+        &(pImpl->m_hThread),
+#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
+        &attr,
+#else
+        PTHREAD_ATTR_DEFAULT,
+#endif
+        osl_thread_start_Impl,
+        static_cast<void*>(pImpl))) != 0)
+    {
+        SAL_WARN(
+            "sal.osl",
+            "pthread_create failed: " << UnixErrnoString(nRet));
+
+        pthread_mutex_unlock (&(pImpl->m_Lock));
+        osl_thread_destruct_Impl (&pImpl);
+
+        return nullptr;
+    }
+
+#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
+    pthread_attr_destroy(&attr);
+#endif
+
+    /* wait for change from STARTUP to ACTIVE state */
+    while (pImpl->m_Flags & THREADIMPL_FLAGS_STARTUP)
+    {
+        /* wait until STARTUP flag is cleared */
+        pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
+    }
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+
+    return static_cast<oslThread>(pImpl);
+}
+
+oslThread osl_createThread (
+    oslWorkerFunction pWorker,
+    void *            pThreadData)
+{
+    return osl_thread_create_Impl (
+        pWorker,
+        pThreadData,
+        THREADIMPL_FLAGS_ATTACHED);
+}
+
+oslThread osl_createSuspendedThread (
+    oslWorkerFunction pWorker,
+    void *            pThreadData)
+{
+    return osl_thread_create_Impl (
+        pWorker,
+        pThreadData,
+        THREADIMPL_FLAGS_ATTACHED |
+        THREADIMPL_FLAGS_SUSPENDED );
+}
+
+void SAL_CALL osl_destroyThread(oslThread Thread)
+{
+    if (Thread != nullptr) {
+        Thread_Impl * impl = static_cast<Thread_Impl *>(Thread);
+        bool active;
+        pthread_mutex_lock(&impl->m_Lock);
+        active = (impl->m_Flags & THREADIMPL_FLAGS_ACTIVE) != 0;
+        impl->m_Flags |= THREADIMPL_FLAGS_DESTROYED;
+        pthread_mutex_unlock(&impl->m_Lock);
+        if (!active) {
+            osl_thread_destruct_Impl(&impl);
+        }
+    }
+}
+
+void SAL_CALL osl_resumeThread(oslThread Thread)
+{
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+    {
+        SAL_WARN("sal.osl", "invalid osl_resumeThread(nullptr) call");
+        return; /* EINVAL */
+    }
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    if (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
+    {
+        /* clear SUSPENDED flag */
+        pImpl->m_Flags &= ~THREADIMPL_FLAGS_SUSPENDED;
+        pthread_cond_signal (&(pImpl->m_Cond));
+    }
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+}
+
+void SAL_CALL osl_suspendThread(oslThread Thread)
+{
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+    {
+        SAL_WARN("sal.osl", "invalid osl_suspendThread(nullptr) call");
+        return; /* EINVAL */
+    }
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    pImpl->m_Flags |= THREADIMPL_FLAGS_SUSPENDED;
+
+    if (pthread_equal (pthread_self(), pImpl->m_hThread))
+    {
+        /* self suspend */
+        while (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
+        {
+            /* wait until SUSPENDED flag is cleared */
+            pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
+        }
+    }
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+}
+
+sal_Bool SAL_CALL osl_isThreadRunning(const oslThread Thread)
+{
+    bool active;
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+        return false;
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+    active = ((pImpl->m_Flags & THREADIMPL_FLAGS_ACTIVE) > 0);
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+
+    return active;
+}
+
+void SAL_CALL osl_joinWithThread(oslThread Thread)
+{
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+        return;
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    pthread_t const thread = pImpl->m_hThread;
+    bool const attached = ((pImpl->m_Flags & THREADIMPL_FLAGS_ATTACHED) > 0);
+
+    /* check this only if *this* thread is still attached - if it's not,
+       then it could have terminated and another newly created thread could
+       have recycled the same id as m_hThread! */
+    if (attached && pthread_equal(pthread_self(), pImpl->m_hThread))
+    {
+        assert(false); /* Win32 implementation would deadlock here! */
+        /* self join */
+        pthread_mutex_unlock (&(pImpl->m_Lock));
+        return; /* EDEADLK */
+    }
+
+    pImpl->m_Flags &= ~THREADIMPL_FLAGS_ATTACHED;
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+
+    if (attached)
+    {
+        pthread_join (thread, nullptr);
+    }
+}
+
+void SAL_CALL osl_terminateThread(oslThread Thread)
+{
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+    {
+        SAL_WARN("sal.osl", "invalid osl_terminateThread(nullptr) call");
+        return; /* EINVAL */
+    }
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    if (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
+    {
+        /* clear SUSPENDED flag */
+        pImpl->m_Flags &= ~THREADIMPL_FLAGS_SUSPENDED;
+        pthread_cond_signal (&(pImpl->m_Cond));
+    }
+
+    pImpl->m_Flags |= THREADIMPL_FLAGS_TERMINATE;
+
+    pthread_mutex_unlock (&(pImpl->m_Lock));
+}
+
+sal_Bool SAL_CALL osl_scheduleThread(oslThread Thread)
+{
+    bool terminate;
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+    {
+        SAL_WARN("sal.osl", "invalid osl_scheduleThread(nullptr) call");
+        return false; /* EINVAL */
+    }
+
+    if (!(pthread_equal (pthread_self(), pImpl->m_hThread)))
+    {
+        SAL_WARN("sal.osl", "invalid osl_scheduleThread(non-self) call");
+        return false; /* EINVAL */
+    }
+
+    pthread_mutex_lock (&(pImpl->m_Lock));
+
+    while (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
+    {
+        /* wait until SUSPENDED flag is cleared */
+        pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
+    }
+
+    terminate = ((pImpl->m_Flags & THREADIMPL_FLAGS_TERMINATE) > 0);
+
+    pthread_mutex_unlock(&(pImpl->m_Lock));
+
+    return !terminate;
+}
+
+void SAL_CALL osl_waitThread(const TimeValue* pDelay)
+{
+    if (pDelay)
+    {
+        struct timespec delay;
+
+        SET_TIMESPEC(delay, pDelay->Seconds, pDelay->Nanosec);
+
+        SLEEP_TIMESPEC(delay);
+    }
+}
+
+/** Yields thread
+
+    @attention Note that POSIX scheduling @em really requires threads to call this
+    function, since a thread only reschedules to other thread, when
+    it blocks (sleep, blocking I/O) OR calls sched_yield().
+*/
+void SAL_CALL osl_yieldThread()
+{
+    sched_yield();
+}
+
+void SAL_CALL osl_setThreadName(char const * name)
+{
+    assert( name );
+#if defined LINUX && ! defined __FreeBSD_kernel__
+    const int LINUX_THREAD_NAME_MAXLEN = 15;
+    if ( strlen( name ) > LINUX_THREAD_NAME_MAXLEN )
+        SAL_INFO( "sal.osl", "osl_setThreadName truncated thread name to "
+                  << LINUX_THREAD_NAME_MAXLEN << " chars from name '"
+                  << name << "'" );
+    char shortname[ LINUX_THREAD_NAME_MAXLEN + 1 ];
+    shortname[ LINUX_THREAD_NAME_MAXLEN ] = '\0';
+    strncpy( shortname, name, LINUX_THREAD_NAME_MAXLEN );
+    int err = pthread_setname_np( pthread_self(), shortname );
+    if ( 0 != err )
+        SAL_WARN("sal.osl", "pthread_setname_np failed with errno " << err);
+#elif defined __FreeBSD__
+    pthread_setname_np( pthread_self(), name );
+#elif defined MACOSX || defined IOS
+    pthread_setname_np( name );
+#else
+    (void) name;
+#endif
+}
+
+/* osl_getThreadIdentifier @@@ see TODO @@@ */
+
+namespace {
+
+struct HashEntry
+{
+    pthread_t            Handle;
+    oslThreadIdentifier  Ident;
+    HashEntry *          Next;
+};
+
+}
+
+static HashEntry* HashTable[31];
+const int HashSize = SAL_N_ELEMENTS(HashTable);
+
+static std::mutex HashLock;
+
+#if ! ((defined LINUX && !defined __FreeBSD_kernel__) || defined MACOSX || defined IOS)
+static oslThreadIdentifier LastIdent = 0;
+#endif
+
+namespace {
+
+std::size_t HASHID(pthread_t x)
+{ return std::hash<pthread_t>()(x) % HashSize; }
+
+}
+
+static oslThreadIdentifier lookupThreadId (pthread_t hThread)
+{
+    HashEntry *pEntry;
+
+    std::unique_lock aGuard(HashLock);
+
+    pEntry = HashTable[HASHID(hThread)];
+    while (pEntry != nullptr)
+    {
+        if (pthread_equal(pEntry->Handle, hThread))
+        {
+            return pEntry->Ident;
+        }
+        pEntry = pEntry->Next;
+    }
+
+    return 0;
+}
+
+static oslThreadIdentifier insertThreadId (pthread_t hThread)
+{
+    HashEntry *pEntry, *pInsert = nullptr;
+
+    std::unique_lock aGuard(HashLock);
+
+    pEntry = HashTable[HASHID(hThread)];
+
+    while (pEntry != nullptr)
+    {
+        if (pthread_equal(pEntry->Handle, hThread))
+            break;
+
+        pInsert = pEntry;
+        pEntry = pEntry->Next;
+    }
+
+    if (pEntry == nullptr)
+    {
+        pEntry = static_cast<HashEntry*>(calloc(sizeof(HashEntry), 1));
+
+        pEntry->Handle = hThread;
+
+#if defined LINUX && ! defined __FreeBSD_kernel__
+#if defined __GLIBC__ && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30))
+        // gettid returns a pid_t, which POSIX defines to be a signed integer type; assume that all
+        // valid pid_t values on Linux are positive (zero is filtered out in the generic code
+        // below):
+        pid_t const tid = gettid();
+        assert(tid >= 0);
+#else
+        long const tid = syscall(SYS_gettid);
+        if (tid < 0 || o3tl::make_unsigned(tid) > std::numeric_limits<sal_uInt32>::max()) {
+            std::abort();
+        }
+#endif
+        pEntry->Ident = tid;
+#elif defined MACOSX || defined IOS
+        // currently the value of pthread_threadid_np is the same then
+        // syscall(SYS_thread_selfid), which returns an int as the TID.
+        // may change, as the syscall interface was deprecated.
+        uint64_t mac_tid;
+        pthread_threadid_np(nullptr, &mac_tid);
+        if (mac_tid > SAL_MAX_UINT32)
+            std::abort();
+        pEntry->Ident = mac_tid;
+#else
+        ++LastIdent;
+        if (0 == LastIdent)
+            LastIdent = 1;
+        pEntry->Ident = LastIdent;
+#endif
+        if (0 == pEntry->Ident)
+            std::abort();
+
+        if (pInsert)
+            pInsert->Next = pEntry;
+        else
+            HashTable[HASHID(hThread)] = pEntry;
+    }
+
+    return pEntry->Ident;
+}
+
+static void removeThreadId (pthread_t hThread)
+{
+    HashEntry *pEntry, *pRemove = nullptr;
+
+    std::unique_lock aGuard(HashLock);
+
+    pEntry = HashTable[HASHID(hThread)];
+    while (pEntry != nullptr)
+    {
+        if (pthread_equal(pEntry->Handle, hThread))
+            break;
+
+        pRemove = pEntry;
+        pEntry = pEntry->Next;
+    }
+
+    if (pEntry != nullptr)
+    {
+        if (pRemove)
+            pRemove->Next = pEntry->Next;
+        else
+            HashTable[HASHID(hThread)] = pEntry->Next;
+
+        free(pEntry);
+    }
+}
+
+oslThreadIdentifier SAL_CALL osl_getThreadIdentifier(oslThread Thread)
+{
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+    oslThreadIdentifier Ident;
+
+    if (pImpl)
+        Ident = pImpl->m_Ident;
+    else
+    {
+        /* current thread */
+        pthread_t current = pthread_self();
+
+        Ident = lookupThreadId (current);
+        if (Ident == 0)
+            /* @@@ see TODO: alien pthread_self() @@@ */
+            Ident = insertThreadId (current);
+    }
+
+    return Ident;
+}
+
+/*****************************************************************************
+    @@@ see TODO @@@
+    osl_thread_priority_init_Impl
+
+    set the base-priority of the main-thread to
+    oslThreadPriorityNormal (64) since 0 (lowest) is
+    the system default. This behaviour collides with
+    our enum-priority definition (highest..normal..lowest).
+    A  normaluser will expect the main-thread of an app.
+    to have the "normal" priority.
+
+*****************************************************************************/
+static void osl_thread_priority_init_Impl()
+{
+#ifndef NO_PTHREAD_PRIORITY
+    struct sched_param param;
+    int policy=0;
+    int nRet=0;
+
+/* @@@ see TODO: calling thread may not be main thread @@@ */
+
+    if ((nRet = pthread_getschedparam(pthread_self(), &policy, &param)) != 0)
+    {
+        SAL_WARN(
+            "sal.osl",
+            "pthread_getschedparam failed: " << UnixErrnoString(nRet));
+        return;
+    }
+
+#if defined (__sun)
+    if ( policy >= _SCHED_NEXT)
+    {
+        /* mfe: pthread_getschedparam on Solaris has a possible Bug */
+        /*      one gets 959917873 as the policy                    */
+        /*      so set the policy to a default one                  */
+        policy=SCHED_OTHER;
+    }
+#endif /* __sun */
+
+    if ((nRet = sched_get_priority_min(policy) ) != -1)
+    {
+        SAL_INFO(
+            "sal.osl", "Min Prioriy for policy " << policy << " == " << nRet);
+        g_thread.m_priority.m_Lowest=nRet;
+    }
+    else
+    {
+        int e = errno;
+        SAL_WARN(
+            "sal.osl",
+            "sched_get_priority_min failed: " << UnixErrnoString(e));
+    }
+
+    if ((nRet = sched_get_priority_max(policy) ) != -1)
+    {
+        SAL_INFO(
+            "sal.osl", "Max Prioriy for policy " << policy << " == " << nRet);
+        g_thread.m_priority.m_Highest=nRet;
+    }
+    else
+    {
+        int e = errno;
+        SAL_WARN(
+            "sal.osl",
+            "sched_get_priority_max failed: " << UnixErrnoString(e));
+    }
+
+    g_thread.m_priority.m_Normal =
+        (g_thread.m_priority.m_Lowest + g_thread.m_priority.m_Highest) / 2;
+    g_thread.m_priority.m_Below_Normal =
+        (g_thread.m_priority.m_Lowest + g_thread.m_priority.m_Normal)  / 2;
+    g_thread.m_priority.m_Above_Normal =
+        (g_thread.m_priority.m_Normal + g_thread.m_priority.m_Highest) / 2;
+
+/* @@@ set prio of calling (not main) thread (?) @@@ */
+
+    param.sched_priority= g_thread.m_priority.m_Normal;
+
+    if ((nRet = pthread_setschedparam(pthread_self(), policy, &param)) != 0)
+    {
+        SAL_WARN(
+            "sal.osl",
+            "pthread_setschedparam failed: " << UnixErrnoString(nRet));
+        SAL_INFO(
+            "sal.osl",
+            "Thread ID " << pthread_self() << ", Policy " << policy
+                << ", Priority " << param.sched_priority);
+    }
+
+#endif /* NO_PTHREAD_PRIORITY */
+}
+
+/**
+    Impl-Notes: contrary to solaris-docu, which claims
+    valid priority-levels from 0 .. INT_MAX, only the
+    range 0..127 is accepted. (0 lowest, 127 highest)
+*/
+void SAL_CALL osl_setThreadPriority (
+    oslThread         Thread,
+    oslThreadPriority Priority)
+{
+#ifndef NO_PTHREAD_PRIORITY
+
+    struct sched_param Param;
+    int policy;
+    int nRet;
+
+#endif /* NO_PTHREAD_PRIORITY */
+
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+    {
+        SAL_WARN("sal.osl", "invalid osl_setThreadPriority(nullptr, ...) call");
+        return; /* EINVAL */
+    }
+
+#ifdef NO_PTHREAD_PRIORITY
+    (void) Priority; /* unused */
+#else /* NO_PTHREAD_PRIORITY */
+
+    if (pthread_getschedparam(pImpl->m_hThread, &policy, &Param) != 0)
+        return; /* ESRCH */
+
+#if defined (__sun)
+    if ( policy >= _SCHED_NEXT)
+    {
+        /* mfe: pthread_getschedparam on Solaris has a possible Bug */
+        /*      one gets 959917873 as the policy                   */
+        /*      so set the policy to a default one                 */
+        policy=SCHED_OTHER;
+    }
+#endif /* __sun */
+
+    pthread_once (&(g_thread.m_once), osl_thread_init_Impl);
+
+    switch(Priority)
+    {
+        case osl_Thread_PriorityHighest:
+            Param.sched_priority= g_thread.m_priority.m_Highest;
+            break;
+
+        case osl_Thread_PriorityAboveNormal:
+            Param.sched_priority= g_thread.m_priority.m_Above_Normal;
+            break;
+
+        case osl_Thread_PriorityNormal:
+            Param.sched_priority= g_thread.m_priority.m_Normal;
+            break;
+
+        case osl_Thread_PriorityBelowNormal:
+            Param.sched_priority= g_thread.m_priority.m_Below_Normal;
+            break;
+
+        case osl_Thread_PriorityLowest:
+            Param.sched_priority= g_thread.m_priority.m_Lowest;
+            break;
+
+        case osl_Thread_PriorityUnknown:
+            SAL_WARN(
+                "sal.osl",
+                "invalid osl_setThreadPriority(..., osl_Thread_PriorityUnknown)"
+                    " call");
+            return;
+
+        default:
+            SAL_WARN(
+                "sal.osl",
+                "invalid osl_setThreadPriority(..., " << Priority << ") call");
+            return;
+    }
+
+    if ((nRet = pthread_setschedparam(pImpl->m_hThread, policy, &Param)) != 0)
+    {
+        SAL_WARN(
+            "sal.osl",
+            "pthread_setschedparam failed: " << UnixErrnoString(nRet));
+    }
+
+#endif /* NO_PTHREAD_PRIORITY */
+}
+
+oslThreadPriority SAL_CALL osl_getThreadPriority(const oslThread Thread)
+{
+#ifndef NO_PTHREAD_PRIORITY
+
+    struct sched_param Param;
+    int Policy;
+
+#endif /* NO_PTHREAD_PRIORITY */
+
+    oslThreadPriority Priority = osl_Thread_PriorityNormal;
+    Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
+
+    if (!pImpl)
+    {
+        SAL_WARN("sal.osl", "invalid osl_getThreadPriority(nullptr) call");
+        return osl_Thread_PriorityUnknown; /* EINVAL */
+    }
+
+#ifndef NO_PTHREAD_PRIORITY
+
+    if (pthread_getschedparam(pImpl->m_hThread, &Policy, &Param) != 0)
+        return osl_Thread_PriorityUnknown; /* ESRCH */
+
+    pthread_once (&(g_thread.m_once), osl_thread_init_Impl);
+
+    /* map pthread priority to enum */
+    if (Param.sched_priority==g_thread.m_priority.m_Highest)
+    {
+        /* 127 - highest */
+        Priority= osl_Thread_PriorityHighest;
+    }
+    else if (Param.sched_priority > g_thread.m_priority.m_Normal)
+    {
+        /* 65..126 - above normal */
+        Priority= osl_Thread_PriorityAboveNormal;
+    }
+    else if (Param.sched_priority == g_thread.m_priority.m_Normal)
+    {
+        /* normal */
+        Priority= osl_Thread_PriorityNormal;
+    }
+    else if (Param.sched_priority > g_thread.m_priority.m_Lowest)
+    {
+        /* 63..1 -below normal */
+        Priority= osl_Thread_PriorityBelowNormal;
+    }
+    else if (Param.sched_priority == g_thread.m_priority.m_Lowest)
+    {
+        /* 0 - lowest */
+        Priority= osl_Thread_PriorityLowest;
+    }
+    else
+    {
+        /* unknown */
+        Priority= osl_Thread_PriorityUnknown;
+    }
+
+#endif /* NO_PTHREAD_PRIORITY */
+
+    return Priority;
+}
+
+namespace {
+
+struct wrapper_pthread_key
+{
+    pthread_key_t m_key;
+    oslThreadKeyCallbackFunction pfnCallback;
+};
+
+}
+
+oslThreadKey SAL_CALL osl_createThreadKey( oslThreadKeyCallbackFunction pCallback )
+{
+    wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(malloc(sizeof(wrapper_pthread_key)));
+
+    if (pKey)
+    {
+        pKey->pfnCallback = pCallback;
+
+        if (pthread_key_create(&(pKey->m_key), pKey->pfnCallback) != 0)
+        {
+            free(pKey);
+            pKey = nullptr;
+        }
+    }
+
+    return static_cast<oslThreadKey>(pKey);
+}
+
+void SAL_CALL osl_destroyThreadKey(oslThreadKey Key)
+{
+    wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(Key);
+    if (pKey)
+    {
+        pthread_key_delete(pKey->m_key);
+        free(pKey);
+    }
+}
+
+void* SAL_CALL osl_getThreadKeyData(oslThreadKey Key)
+{
+    wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(Key);
+    return pKey ? pthread_getspecific(pKey->m_key) : nullptr;
+}
+
+sal_Bool SAL_CALL osl_setThreadKeyData(oslThreadKey Key, void *pData)
+{
+    bool bRet;
+    void *pOldData = nullptr;
+    wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(Key);
+    if (!pKey)
+        return false;
+
+    if (pKey->pfnCallback)
+        pOldData = pthread_getspecific(pKey->m_key);
+
+    bRet = (pthread_setspecific(pKey->m_key, pData) == 0);
+
+    if (bRet && pKey->pfnCallback && pOldData)
+        pKey->pfnCallback(pOldData);
+
+    return bRet;
+}
+
+static void osl_thread_textencoding_init_Impl()
+{
+    rtl_TextEncoding defaultEncoding;
+
+    /* create thread specific data key */
+    pthread_key_create (&(g_thread.m_textencoding.m_key), nullptr);
+
+    /* determine default text encoding */
+    defaultEncoding = osl_getTextEncodingFromLocale(nullptr);
+    // Tools string functions call abort() on an unknown encoding so ASCII is a
+    // meaningful fallback:
+    if ( RTL_TEXTENCODING_DONTKNOW == defaultEncoding )
+    {
+        SAL_WARN("sal.osl", "RTL_TEXTENCODING_DONTKNOW -> _ASCII_US");
+        defaultEncoding = RTL_TEXTENCODING_ASCII_US;
+    }
+
+    g_thread.m_textencoding.m_default = defaultEncoding;
+}
+
+rtl_TextEncoding SAL_CALL osl_getThreadTextEncoding()
+{
+    rtl_TextEncoding threadEncoding;
+
+    pthread_once (&(g_thread.m_once), osl_thread_init_Impl);
+
+    /* check for thread specific encoding, use default if not set */
+    threadEncoding = static_cast<rtl_TextEncoding>(
+        reinterpret_cast<sal_uIntPtr>(pthread_getspecific(g_thread.m_textencoding.m_key)));
+    if (threadEncoding == 0)
+        threadEncoding = g_thread.m_textencoding.m_default;
+
+    return threadEncoding;
+}
+
+rtl_TextEncoding osl_setThreadTextEncoding(rtl_TextEncoding Encoding)
+{
+    rtl_TextEncoding oldThreadEncoding = osl_getThreadTextEncoding();
+
+    /* save encoding in thread local storage */
+    pthread_setspecific (
+        g_thread.m_textencoding.m_key,
+        reinterpret_cast<void*>(static_cast<sal_uIntPtr>(Encoding)));
+
+    return oldThreadEncoding;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/time.cxx b/sal/osl/unx/time.cxx
new file mode 100644
index 000000000..a77015614
--- /dev/null
+++ b/sal/osl/unx/time.cxx
@@ -0,0 +1,310 @@
+/* -*- 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 <sal/config.h>
+
+#include "saltime.hxx"
+#include "system.hxx"
+
+#include <osl/time.h>
+#include <time.h>
+#include <unistd.h>
+
+#ifdef __MACH__
+#include <mach/clock.h>
+#include <mach/mach.h>
+#endif
+
+/* FIXME: detection should be done in configure script */
+#if defined(MACOSX) || defined(IOS) || defined(FREEBSD) || defined(NETBSD) || \
+    defined(LINUX) || defined(OPENBSD) || defined(DRAGONFLY)
+#define STRUCT_TM_HAS_GMTOFF 1
+
+#elif defined(__sun)
+#define HAS_ALTZONE 1
+#endif
+
+#ifdef __MACH__
+typedef mach_timespec_t osl_time_t;
+#else
+#if defined(_POSIX_TIMERS)
+#define USE_CLOCK_GETTIME
+typedef struct timespec osl_time_t;
+#else
+typedef struct timeval osl_time_t;
+#endif
+#endif
+static osl_time_t startTime;
+
+sal_Bool SAL_CALL osl_getSystemTime(TimeValue* tv)
+{
+#ifdef __MACH__
+    clock_serv_t cclock;
+    mach_timespec_t mts;
+
+    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+    clock_get_time(cclock, &mts);
+    mach_port_deallocate(mach_task_self(), cclock);
+
+    tv->Seconds = mts.tv_sec;
+    tv->Nanosec = mts.tv_nsec;
+#else
+    int res;
+    osl_time_t tp;
+#if defined(USE_CLOCK_GETTIME)
+    res = clock_gettime(CLOCK_REALTIME, &tp);
+#else
+    res = gettimeofday(&tp, NULL);
+#endif
+
+    if (res != 0)
+    {
+        return false;
+    }
+
+    tv->Seconds = tp.tv_sec;
+    #if defined(USE_CLOCK_GETTIME)
+    tv->Nanosec = tp.tv_nsec;
+    #else
+    tv->Nanosec = tp.tv_usec * 1000;
+    #endif
+#endif
+    return true;
+}
+
+sal_Bool SAL_CALL osl_getDateTimeFromTimeValue( const TimeValue* pTimeVal, oslDateTime* pDateTime )
+{
+    struct tm *pSystemTime;
+    struct tm tmBuf;
+    time_t atime;
+
+    atime = static_cast<time_t>(pTimeVal->Seconds);
+
+    /* Convert time from type time_t to struct tm */
+    pSystemTime = gmtime_r( &atime, &tmBuf );
+
+    /* Convert struct tm to struct oslDateTime */
+    if ( pSystemTime != nullptr )
+    {
+        pDateTime->NanoSeconds  =   pTimeVal->Nanosec;
+        pDateTime->Seconds      =   pSystemTime->tm_sec;
+        pDateTime->Minutes      =   pSystemTime->tm_min;
+        pDateTime->Hours        =   pSystemTime->tm_hour;
+        pDateTime->Day          =   pSystemTime->tm_mday;
+        pDateTime->DayOfWeek    =   pSystemTime->tm_wday;
+        pDateTime->Month        =   pSystemTime->tm_mon + 1;
+        pDateTime->Year         =   pSystemTime->tm_year  + 1900;
+
+        return true;
+    }
+
+    return false;
+}
+
+sal_Bool SAL_CALL osl_getTimeValueFromDateTime( const oslDateTime* pDateTime, TimeValue* pTimeVal )
+{
+    struct tm   aTime;
+    time_t      nSeconds;
+
+    /* Convert struct oslDateTime to struct tm */
+    aTime.tm_sec  = pDateTime->Seconds;
+    aTime.tm_min  = pDateTime->Minutes;
+    aTime.tm_hour = pDateTime->Hours;
+    aTime.tm_mday = pDateTime->Day;
+
+    if ( pDateTime->Month > 0 )
+        aTime.tm_mon = pDateTime->Month - 1;
+    else
+        return false;
+
+    aTime.tm_year = pDateTime->Year - 1900;
+
+    aTime.tm_isdst = -1;
+    aTime.tm_wday  = 0;
+    aTime.tm_yday  = 0;
+
+#if defined(STRUCT_TM_HAS_GMTOFF)
+    aTime.tm_gmtoff = 0;
+#endif
+
+    /* Convert time to calendar value */
+    nSeconds = mktime( &aTime );
+
+    /*
+     * mktime expects the struct tm to be in local timezone, so we have to adjust
+     * the returned value to be timezone neutral.
+     */
+
+    if ( nSeconds != time_t(-1) )
+    {
+        time_t bias;
+
+        /* timezone corrections */
+        tzset();
+
+#if defined(STRUCT_TM_HAS_GMTOFF)
+        /* members of struct tm are corrected by mktime */
+        bias = 0 - aTime.tm_gmtoff;
+
+#elif defined(HAS_ALTZONE)
+        /* check if daylight saving time is in effect */
+        bias = aTime.tm_isdst > 0 ? altzone : timezone;
+#else
+        /* expect daylight saving time to be one hour */
+        bias = aTime.tm_isdst > 0 ? timezone - 3600 : timezone;
+#endif
+
+        pTimeVal->Seconds = nSeconds;
+        pTimeVal->Nanosec = pDateTime->NanoSeconds;
+
+        if ( nSeconds > bias )
+            pTimeVal->Seconds -= bias;
+
+        return true;
+    }
+
+    return false;
+}
+
+sal_Bool SAL_CALL osl_getLocalTimeFromSystemTime( const TimeValue* pSystemTimeVal, TimeValue* pLocalTimeVal )
+{
+    struct tm *pLocalTime;
+    struct tm tmBuf;
+    time_t bias;
+    time_t atime;
+
+    atime = static_cast<time_t>(pSystemTimeVal->Seconds);
+    pLocalTime = localtime_r( &atime, &tmBuf );
+
+#if defined(STRUCT_TM_HAS_GMTOFF)
+    /* members of struct tm are corrected by mktime */
+    bias = -pLocalTime->tm_gmtoff;
+
+#elif defined(HAS_ALTZONE)
+    /* check if daylight saving time is in effect */
+    bias = pLocalTime->tm_isdst > 0 ? altzone : timezone;
+#else
+    /* expect daylight saving time to be one hour */
+    bias = pLocalTime->tm_isdst > 0 ? timezone - 3600 : timezone;
+#endif
+
+    if ( static_cast<sal_Int64>(pSystemTimeVal->Seconds) > bias )
+    {
+        pLocalTimeVal->Seconds = pSystemTimeVal->Seconds - bias;
+        pLocalTimeVal->Nanosec = pSystemTimeVal->Nanosec;
+
+        return true;
+    }
+
+    return false;
+}
+
+sal_Bool SAL_CALL osl_getSystemTimeFromLocalTime( const TimeValue* pLocalTimeVal, TimeValue* pSystemTimeVal )
+{
+    struct tm *pLocalTime;
+    struct tm tmBuf;
+    time_t bias;
+    time_t atime;
+
+    atime = static_cast<time_t>(pLocalTimeVal->Seconds);
+
+    /* Convert atime, which is a local time, to its GMT equivalent. Then, get
+     * the timezone offset for the local time for the GMT equivalent time. Note
+     * that we cannot directly use local time to determine the timezone offset
+     * because GMT is the only reliable time that we can determine timezone
+     * offset from.
+     */
+
+    atime = mktime( gmtime_r( &atime, &tmBuf ) );
+    pLocalTime = localtime_r( &atime, &tmBuf );
+
+#if defined(STRUCT_TM_HAS_GMTOFF)
+    /* members of struct tm are corrected by mktime */
+    bias = 0 - pLocalTime->tm_gmtoff;
+
+#elif defined(HAS_ALTZONE)
+    /* check if daylight saving time is in effect */
+    bias = pLocalTime->tm_isdst > 0 ? altzone : timezone;
+#else
+    /* expect daylight saving time to be one hour */
+    bias = pLocalTime->tm_isdst > 0 ? timezone - 3600 : timezone;
+#endif
+
+    if ( static_cast<sal_Int64>(pLocalTimeVal->Seconds) + bias > 0 )
+    {
+        pSystemTimeVal->Seconds = pLocalTimeVal->Seconds + bias;
+        pSystemTimeVal->Nanosec = pLocalTimeVal->Nanosec;
+
+        return true;
+    }
+
+    return false;
+}
+
+void sal_initGlobalTimer()
+{
+#ifdef __MACH__
+  clock_serv_t cclock;
+
+  host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+  clock_get_time(cclock, &startTime);
+  mach_port_deallocate(mach_task_self(), cclock);
+#else /* ! (MACOSX || IOS) */
+#if defined(USE_CLOCK_GETTIME)
+  clock_gettime(CLOCK_REALTIME, &startTime);
+#else /* Ndef USE_CLOCK_GETTIME */
+  gettimeofday( &startTime, NULL );
+#endif /* NDef USE_CLOCK_GETTIME */
+#endif /* ! (MACOSX || IOS) */
+}
+
+sal_uInt32 SAL_CALL osl_getGlobalTimer()
+{
+    sal_uInt32 nSeconds;
+
+#ifdef __MACH__
+    clock_serv_t cclock;
+    mach_timespec_t currentTime;
+
+    host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+    clock_get_time(cclock, &currentTime);
+    mach_port_deallocate(mach_task_self(), cclock);
+
+    nSeconds = ( currentTime.tv_sec - startTime.tv_sec );
+    nSeconds = ( nSeconds * 1000 ) + static_cast<long>(( currentTime.tv_nsec - startTime.tv_nsec) / 1000000 );
+#else
+    osl_time_t currentTime;
+
+#if defined(USE_CLOCK_GETTIME)
+    clock_gettime(CLOCK_REALTIME, &currentTime);
+#else
+    gettimeofday( &currentTime, NULL );
+#endif
+
+    nSeconds = static_cast<sal_uInt32>( currentTime.tv_sec - startTime.tv_sec );
+#if defined(USE_CLOCK_GETTIME)
+    nSeconds = ( nSeconds * 1000 ) + static_cast<long>(( currentTime.tv_nsec - startTime.tv_nsec) / 1000000 );
+#else
+    nSeconds = ( nSeconds * 1000 ) + (long) (( currentTime.tv_usec - startTime.tv_usec) / 1000 );
+#endif
+#endif
+    return nSeconds;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/unixerrnostring.hxx b/sal/osl/unx/unixerrnostring.hxx
new file mode 100644
index 000000000..9e13b04e6
--- /dev/null
+++ b/sal/osl/unx/unixerrnostring.hxx
@@ -0,0 +1,27 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_UNIXERRNOSTRING_HXX
+#define INCLUDED_SAL_OSL_UNX_UNIXERRNOSTRING_HXX
+
+#include <string>
+
+// Return the symbolic name of an errno value, like "ENOENT".
+
+// Rationale why to use this and not strerror(): This is intended to be used in SAL_INFO() and
+// SAL_WARN(). Such messages are intended to be read by developers, not end-users. Developers are
+// (or should be) familiar with symbolic errno names in code anyway. strerror() is localized and the
+// localised error strings might be less familiar to a developer that happens to run a localised
+// environment.
+
+std::string UnixErrnoString(int nErrno);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/uunxapi.cxx b/sal/osl/unx/uunxapi.cxx
new file mode 100644
index 000000000..5311bc719
--- /dev/null
+++ b/sal/osl/unx/uunxapi.cxx
@@ -0,0 +1,905 @@
+/* -*- Mode: ObjC; 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 <sal/config.h>
+
+#include <string_view>
+
+#include <config_features.h>
+
+#include "uunxapi.hxx"
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+#include <limits.h>
+#include <rtl/ustring.hxx>
+#include <osl/thread.h>
+#include <sal/log.hxx>
+
+#ifdef ANDROID
+#include <osl/detail/android-bootstrap.h>
+#endif
+
+OString osl::OUStringToOString(std::u16string_view s)
+{
+    return rtl::OUStringToOString(s, osl_getThreadTextEncoding());
+}
+
+#if HAVE_FEATURE_MACOSX_SANDBOX
+
+#include <Foundation/Foundation.h>
+#include <Security/Security.h>
+#include <mach-o/dyld.h>
+
+static NSUserDefaults *userDefaults = NULL;
+static bool isSandboxed = false;
+
+static void do_once()
+{
+    SecCodeRef code;
+    OSStatus rc = SecCodeCopySelf(kSecCSDefaultFlags, &code);
+
+    SecStaticCodeRef staticCode;
+    if (rc == errSecSuccess)
+        rc = SecCodeCopyStaticCode(code, kSecCSDefaultFlags, &staticCode);
+
+    CFDictionaryRef signingInformation;
+    if (rc == errSecSuccess)
+        rc = SecCodeCopySigningInformation(staticCode, kSecCSRequirementInformation, &signingInformation);
+
+    CFDictionaryRef entitlements = NULL;
+    if (rc == errSecSuccess)
+        entitlements = (CFDictionaryRef) CFDictionaryGetValue(signingInformation, kSecCodeInfoEntitlementsDict);
+
+    if (entitlements != NULL)
+        if (CFDictionaryGetValue(entitlements, CFSTR("com.apple.security.app-sandbox")) != NULL)
+            isSandboxed = true;
+
+    if (isSandboxed)
+        userDefaults = [NSUserDefaults standardUserDefaults];
+}
+
+typedef struct {
+    NSURL *scopeURL;
+    NSAutoreleasePool *pool;
+} accessFilePathState;
+
+static accessFilePathState *
+prepare_to_access_file_path( const char *cpFilePath )
+{
+    static pthread_once_t once = PTHREAD_ONCE_INIT;
+    pthread_once(&once, &do_once);
+    NSURL *fileURL = nil;
+    NSData *data = nil;
+    BOOL stale;
+    accessFilePathState *state;
+
+    if (!isSandboxed)
+        return NULL;
+
+    // If malloc() fails we are screwed anyway
+    state = (accessFilePathState*) malloc(sizeof(accessFilePathState));
+
+    state->pool = [[NSAutoreleasePool alloc] init];
+    state->scopeURL = nil;
+
+    if (userDefaults != nil)
+        fileURL = [NSURL fileURLWithPath:[NSString stringWithUTF8String:cpFilePath]];
+
+    if (fileURL != nil)
+        data = [userDefaults dataForKey:[@"bookmarkFor:" stringByAppendingString:[fileURL absoluteString]]];
+
+    if (data != nil)
+        state->scopeURL = [NSURL URLByResolvingBookmarkData:data
+                                                    options:NSURLBookmarkResolutionWithSecurityScope
+                                              relativeToURL:nil
+                                        bookmarkDataIsStale:&stale
+                                                      error:nil];
+    if (state->scopeURL != nil)
+        [state->scopeURL startAccessingSecurityScopedResource];
+
+    return state;
+}
+
+static void
+done_accessing_file_path( const char * /*cpFilePath*/, accessFilePathState *state )
+{
+    if (!isSandboxed)
+        return;
+
+    int saved_errno = errno;
+
+    if (state->scopeURL != nil)
+        [state->scopeURL stopAccessingSecurityScopedResource];
+    [state->pool release];
+    free(state);
+
+    errno = saved_errno;
+}
+
+#else
+
+typedef void accessFilePathState;
+
+#define prepare_to_access_file_path( cpFilePath ) nullptr
+
+#define done_accessing_file_path( cpFilePath, state ) ((void) cpFilePath, (void) state)
+
+#endif
+
+#ifdef MACOSX
+/*
+ * Helper function for resolving Mac native alias files (not the same as unix alias files)
+ * and to return the resolved alias as OString
+ */
+static OString macxp_resolveAliasAndConvert(OString const & p)
+{
+    char path[PATH_MAX];
+    if (p.getLength() < PATH_MAX)
+    {
+        strcpy(path, p.getStr());
+        macxp_resolveAlias(path, PATH_MAX);
+        return OString(path);
+    }
+    return p;
+}
+#endif /* MACOSX */
+
+int osl::access(const OString& pstrPath, int mode)
+{
+    OString fn = pstrPath;
+#ifdef ANDROID
+    if (fn == "/assets" || fn.startsWith("/assets/"))
+    {
+        struct stat stat;
+        if (lo_apk_lstat(fn.getStr(), &stat) == -1)
+            return -1;
+        if (mode & W_OK)
+        {
+            errno = EACCES;
+            return -1;
+        }
+        return 0;
+    }
+#endif
+
+#ifdef MACOSX
+    fn = macxp_resolveAliasAndConvert(fn);
+#endif
+
+    accessFilePathState *state = prepare_to_access_file_path(fn.getStr());
+
+    int result = ::access(fn.getStr(), mode);
+    int saved_errno = errno;
+    if (result == -1)
+        SAL_INFO("sal.file", "access(" << fn << ",0" << std::oct << mode << std::dec << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "access(" << fn << ",0" << std::oct << mode << std::dec << "): OK");
+
+    done_accessing_file_path(fn.getStr(), state);
+
+    errno = saved_errno;
+
+    return result;
+}
+
+namespace {
+
+OString toOString(OString const & s) { return s; }
+
+OString toOString(std::u16string_view s) { return osl::OUStringToOString(s); }
+
+template<typename T> T fromOString(OString const &) = delete;
+
+template<> OString fromOString(OString const & s) { return s; }
+
+template<> OUString fromOString(OString const & s)
+{ return OStringToOUString(s, osl_getThreadTextEncoding()); }
+
+template<typename T> bool realpath_(const T& pstrFileName, T& ppstrResolvedName)
+{
+    OString fn = toOString(pstrFileName);
+#if defined ANDROID || defined(EMSCRIPTEN)
+#if defined ANDROID
+    if (fn == "/assets" || fn.startsWith("/assets/"))
+#else
+    if (fn == "/instdir" || fn.startsWith("/instdir/"))
+#endif
+    {
+        if (osl::access(fn, F_OK) == -1)
+            return false;
+
+        ppstrResolvedName = pstrFileName;
+
+        return true;
+    }
+#endif // ANDROID || EMSCRIPTEN
+
+#ifdef MACOSX
+    fn = macxp_resolveAliasAndConvert(fn);
+#endif
+
+    accessFilePathState *state = prepare_to_access_file_path(fn.getStr());
+
+    char  rp[PATH_MAX];
+    bool  bRet = realpath(fn.getStr(), rp);
+    int   saved_errno = errno;
+    if (!bRet)
+        SAL_INFO("sal.file", "realpath(" << fn << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "realpath(" << fn << "): OK");
+
+    done_accessing_file_path(fn.getStr(), state);
+
+    if (bRet)
+    {
+        ppstrResolvedName = fromOString<T>(OString(rp));
+    }
+
+    errno = saved_errno;
+
+    return bRet;
+}
+
+}
+
+bool osl::realpath(const OUString& pustrFileName, OUString& ppustrResolvedName)
+{
+    return realpath_(pustrFileName, ppustrResolvedName);
+}
+
+bool osl::realpath(const OString& pstrFileName, OString& ppstrResolvedName)
+{
+    return realpath_(pstrFileName, ppstrResolvedName);
+}
+
+int stat_c(const char* cpPath, struct stat* buf)
+{
+#ifdef ANDROID
+    if (strncmp(cpPath, "/assets", sizeof("/assets")-1) == 0 &&
+        (cpPath[sizeof("/assets")-1] == '\0' ||
+         cpPath[sizeof("/assets")-1] == '/'))
+        return lo_apk_lstat(cpPath, buf);
+#endif
+
+    accessFilePathState *state = prepare_to_access_file_path(cpPath);
+
+    int result = stat(cpPath, buf);
+    int saved_errno = errno;
+    if (result == -1)
+        SAL_INFO("sal.file", "stat(" << cpPath << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "stat(" << cpPath << "): OK");
+
+    done_accessing_file_path(cpPath, state);
+
+    errno = saved_errno;
+
+    return result;
+}
+
+int lstat_c(const char* cpPath, struct stat* buf)
+{
+#ifdef ANDROID
+    if (strncmp(cpPath, "/assets", sizeof("/assets")-1) == 0 &&
+        (cpPath[sizeof("/assets")-1] == '\0' ||
+         cpPath[sizeof("/assets")-1] == '/'))
+        return lo_apk_lstat(cpPath, buf);
+#endif
+
+    accessFilePathState *state = prepare_to_access_file_path(cpPath);
+
+    int result = lstat(cpPath, buf);
+    int saved_errno = errno;
+    if (result == -1)
+        SAL_INFO("sal.file", "lstat(" << cpPath << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "lstat(" << cpPath << "): OK");
+
+    done_accessing_file_path(cpPath, state);
+
+    errno = saved_errno;
+
+    return result;
+}
+
+namespace {
+
+template<typename T> int lstat_(const T& pstrPath, struct stat& buf)
+{
+    OString fn = toOString(pstrPath);
+
+#ifdef MACOSX
+    fn = macxp_resolveAliasAndConvert(fn);
+#endif
+
+    return lstat_c(fn.getStr(), &buf);
+}
+
+}
+
+int osl::lstat(const OUString& pustrPath, struct stat& buf)
+{
+    return lstat_(pustrPath, buf);
+}
+
+int osl::lstat(const OString& pstrPath, struct stat& buf)
+{
+    return lstat_(pstrPath, buf);
+}
+
+int osl::mkdir(const OString& path, mode_t mode)
+{
+    accessFilePathState *state = prepare_to_access_file_path(path.getStr());
+
+    int result = ::mkdir(path.getStr(), mode);
+    int saved_errno = errno;
+    if (result == -1)
+        SAL_INFO("sal.file", "mkdir(" << path << ",0" << std::oct << mode << std::dec << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "mkdir(" << path << ",0" << std::oct << mode << std::dec << "): OK");
+
+    done_accessing_file_path(path.getStr(), state);
+
+    errno = saved_errno;
+
+    return result;
+}
+
+int open_c(const OString& path, int oflag, int mode)
+{
+    accessFilePathState *state = prepare_to_access_file_path(path.getStr());
+
+    int result = open(path.getStr(), oflag, mode);
+    int saved_errno = errno;
+    if (result == -1)
+        SAL_INFO("sal.file", "open(" << path << ",0" << std::oct << oflag << ",0" << mode << std::dec << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "open(" << path << ",0" << std::oct << oflag << ",0" << mode << std::dec << ") => " << result);
+
+#if HAVE_FEATURE_MACOSX_SANDBOX
+    if (isSandboxed && result != -1 && (oflag & O_CREAT) && (oflag & O_EXCL))
+    {
+        // A new file was created. Check if it is outside the sandbox.
+        // (In that case it must be one the user selected as export or
+        // save destination in a file dialog, otherwise we wouldn't
+        // have been able to create it.) Create and store a security
+        // scoped bookmark for it so that we can access the file in
+        // the future, too. (For the "Recent Files" functionality.)
+        const char *sandbox = [NSHomeDirectory() UTF8String];
+        if (!(strncmp(sandbox, path.getStr(), strlen(sandbox)) == 0 &&
+              path[strlen(sandbox)] == '/'))
+        {
+            auto cpPath = path.getStr();
+            NSURL *url = [NSURL fileURLWithPath:[NSString stringWithUTF8String:cpPath]];
+            NSData *data = [url bookmarkDataWithOptions:NSURLBookmarkCreationWithSecurityScope
+                         includingResourceValuesForKeys:nil
+                                          relativeToURL:nil
+                                                  error:nil];
+            if (data != NULL)
+            {
+                [userDefaults setObject:data
+                                 forKey:[@"bookmarkFor:" stringByAppendingString:[url absoluteString]]];
+            }
+        }
+    }
+#endif
+
+    done_accessing_file_path(path.getStr(), state);
+
+    errno = saved_errno;
+
+    return result;
+}
+
+int utime_c(const char *cpPath, struct utimbuf *times)
+{
+    accessFilePathState *state = prepare_to_access_file_path(cpPath);
+
+    int result = utime(cpPath, times);
+
+    done_accessing_file_path(cpPath, state);
+
+    return result;
+}
+
+int ftruncate_with_name(int fd, sal_uInt64 uSize, const OString& path)
+{
+    /* When sandboxed on macOS, ftruncate(), even if it takes an
+     * already open file descriptor which was returned from an open()
+     * call already checked by the sandbox, still requires a security
+     * scope bookmark for the file to be active in case the file is
+     * one that the sandbox doesn't otherwise allow access to. Luckily
+     * LibreOffice usually calls ftruncate() through the helpful C++
+     * abstraction layer that keeps the pathname around.
+     */
+
+    OString fn(path);
+
+#ifdef MACOSX
+    fn = macxp_resolveAliasAndConvert(fn);
+#endif
+
+    accessFilePathState *state = prepare_to_access_file_path(fn.getStr());
+
+    int result = ftruncate(fd, uSize);
+    int saved_errno = errno;
+    if (result < 0)
+        SAL_INFO("sal.file", "ftruncate(" << fd << "," << uSize << "): " << UnixErrnoString(saved_errno));
+    else
+        SAL_INFO("sal.file", "ftruncate(" << fd << "," << uSize << "): OK");
+
+    done_accessing_file_path(fn.getStr(), state);
+
+    errno = saved_errno;
+
+    return result;
+}
+
+
+std::string UnixErrnoString(int nErrno)
+{
+    // Errnos from <asm-generic/errno-base.h> and <asm-generic/errno.h> on Linux and <sys/errno.h>
+    // on macOS.
+    switch (nErrno)
+    {
+        case EPERM:
+            return "EPERM";
+        case ENOENT:
+            return "ENOENT";
+        case ESRCH:
+            return "ESRCH";
+        case EINTR:
+            return "EINTR";
+        case EIO:
+            return "EIO";
+        case ENXIO:
+            return "ENXIO";
+        case E2BIG:
+            return "E2BIG";
+        case ENOEXEC:
+            return "ENOEXEC";
+        case EBADF:
+            return "EBADF";
+        case ECHILD:
+            return "ECHILD";
+        case EAGAIN:
+            return "EAGAIN";
+        case ENOMEM:
+            return "ENOMEM";
+        case EACCES:
+            return "EACCES";
+        case EFAULT:
+            return "EFAULT";
+#ifdef ENOTBLK
+        case ENOTBLK:
+            return "ENOTBLK";
+#endif
+        case EBUSY:
+            return "EBUSY";
+        case EEXIST:
+            return "EEXIST";
+        case EXDEV:
+            return "EXDEV";
+        case ENODEV:
+            return "ENODEV";
+        case ENOTDIR:
+            return "ENOTDIR";
+        case EISDIR:
+            return "EISDIR";
+        case EINVAL:
+            return "EINVAL";
+        case ENFILE:
+            return "ENFILE";
+        case EMFILE:
+            return "EMFILE";
+        case ENOTTY:
+            return "ENOTTY";
+        case ETXTBSY:
+            return "ETXTBSY";
+        case EFBIG:
+            return "EFBIG";
+        case ENOSPC:
+            return "ENOSPC";
+        case ESPIPE:
+            return "ESPIPE";
+        case EROFS:
+            return "EROFS";
+        case EMLINK:
+            return "EMLINK";
+        case EPIPE:
+            return "EPIPE";
+        case EDOM:
+            return "EDOM";
+        case ERANGE:
+            return "ERANGE";
+        case EDEADLK:
+            return "EDEADLK";
+        case ENAMETOOLONG:
+            return "ENAMETOOLONG";
+        case ENOLCK:
+            return "ENOLCK";
+        case ENOSYS:
+            return "ENOSYS";
+        case ENOTEMPTY:
+            return "ENOTEMPTY";
+        case ELOOP:
+            return "ELOOP";
+        case ENOMSG:
+            return "ENOMSG";
+        case EIDRM:
+            return "EIDRM";
+#ifdef ECHRNG
+        case ECHRNG:
+            return "ECHRNG";
+#endif
+#ifdef EL2NSYNC
+        case EL2NSYNC:
+            return "EL2NSYNC";
+#endif
+#ifdef EL3HLT
+        case EL3HLT:
+            return "EL3HLT";
+#endif
+#ifdef EL3RST
+        case EL3RST:
+            return "EL3RST";
+#endif
+#ifdef ELNRNG
+        case ELNRNG:
+            return "ELNRNG";
+#endif
+#ifdef EUNATCH
+        case EUNATCH:
+            return "EUNATCH";
+#endif
+#ifdef ENOCSI
+        case ENOCSI:
+            return "ENOCSI";
+#endif
+#ifdef EL2HLT
+        case EL2HLT:
+            return "EL2HLT";
+#endif
+#ifdef EBADE
+        case EBADE:
+            return "EBADE";
+#endif
+#ifdef EBADR
+        case EBADR:
+            return "EBADR";
+#endif
+#ifdef EXFULL
+        case EXFULL:
+            return "EXFULL";
+#endif
+#ifdef ENOANO
+        case ENOANO:
+            return "ENOANO";
+#endif
+#ifdef EBADRQC
+        case EBADRQC:
+            return "EBADRQC";
+#endif
+#ifdef EBADSLT
+        case EBADSLT:
+            return "EBADSLT";
+#endif
+#ifdef EBFONT
+        case EBFONT:
+            return "EBFONT";
+#endif
+        case ENOSTR:
+            return "ENOSTR";
+        case ENODATA:
+            return "ENODATA";
+        case ETIME:
+            return "ETIME";
+        case ENOSR:
+            return "ENOSR";
+#ifdef ENONET
+        case ENONET:
+            return "ENONET";
+#endif
+#ifdef ENOPKG
+        case ENOPKG:
+            return "ENOPKG";
+#endif
+#ifdef EREMOTE
+        case EREMOTE:
+            return "EREMOTE";
+#endif
+        case ENOLINK:
+            return "ENOLINK";
+#ifdef EADV
+        case EADV:
+            return "EADV";
+#endif
+#ifdef ESRMNT
+        case ESRMNT:
+            return "ESRMNT";
+#endif
+#ifdef ECOMM
+        case ECOMM:
+            return "ECOMM";
+#endif
+        case EPROTO:
+            return "EPROTO";
+        case EMULTIHOP:
+            return "EMULTIHOP";
+#ifdef EDOTDOT
+        case EDOTDOT:
+            return "EDOTDOT";
+#endif
+        case EBADMSG:
+            return "EBADMSG";
+        case EOVERFLOW:
+            return "EOVERFLOW";
+#ifdef ENOTUNIQ
+        case ENOTUNIQ:
+            return "ENOTUNIQ";
+#endif
+#ifdef EBADFD
+        case EBADFD:
+            return "EBADFD";
+#endif
+#ifdef EREMCHG
+        case EREMCHG:
+            return "EREMCHG";
+#endif
+#ifdef ELIBACC
+        case ELIBACC:
+            return "ELIBACC";
+#endif
+#ifdef ELIBBAD
+        case ELIBBAD:
+            return "ELIBBAD";
+#endif
+#ifdef ELIBSCN
+        case ELIBSCN:
+            return "ELIBSCN";
+#endif
+#ifdef ELIBMAX
+        case ELIBMAX:
+            return "ELIBMAX";
+#endif
+#ifdef ELIBEXEC
+        case ELIBEXEC:
+            return "ELIBEXEC";
+#endif
+        case EILSEQ:
+            return "EILSEQ";
+#ifdef ERESTART
+        case ERESTART:
+            return "ERESTART";
+#endif
+#ifdef ESTRPIPE
+        case ESTRPIPE:
+            return "ESTRPIPE";
+#endif
+#ifdef EUSERS
+        case EUSERS:
+            return "EUSERS";
+#endif
+        case ENOTSOCK:
+            return "ENOTSOCK";
+        case EDESTADDRREQ:
+            return "EDESTADDRREQ";
+        case EMSGSIZE:
+            return "EMSGSIZE";
+        case EPROTOTYPE:
+            return "EPROTOTYPE";
+        case ENOPROTOOPT:
+            return "ENOPROTOOPT";
+        case EPROTONOSUPPORT:
+            return "EPROTONOSUPPORT";
+#ifdef ESOCKTNOSUPPORT
+        case ESOCKTNOSUPPORT:
+            return "ESOCKTNOSUPPORT";
+#endif
+#ifdef EOPNOTSUPP
+        case EOPNOTSUPP:
+            return "EOPNOTSUPP";
+#endif
+        case EPFNOSUPPORT:
+            return "EPFNOSUPPORT";
+        case EAFNOSUPPORT:
+            return "EAFNOSUPPORT";
+        case EADDRINUSE:
+            return "EADDRINUSE";
+        case EADDRNOTAVAIL:
+            return "EADDRNOTAVAIL";
+        case ENETDOWN:
+            return "ENETDOWN";
+        case ENETUNREACH:
+            return "ENETUNREACH";
+        case ENETRESET:
+            return "ENETRESET";
+        case ECONNABORTED:
+            return "ECONNABORTED";
+        case ECONNRESET:
+            return "ECONNRESET";
+        case ENOBUFS:
+            return "ENOBUFS";
+        case EISCONN:
+            return "EISCONN";
+        case ENOTCONN:
+            return "ENOTCONN";
+#ifdef ESHUTDOWN
+        case ESHUTDOWN:
+            return "ESHUTDOWN";
+#endif
+#ifdef ETOOMANYREFS
+        case ETOOMANYREFS:
+            return "ETOOMANYREFS";
+#endif
+        case ETIMEDOUT:
+            return "ETIMEDOUT";
+        case ECONNREFUSED:
+            return "ECONNREFUSED";
+#ifdef EHOSTDOWN
+        case EHOSTDOWN:
+            return "EHOSTDOWN";
+#endif
+        case EHOSTUNREACH:
+            return "EHOSTUNREACH";
+        case EALREADY:
+            return "EALREADY";
+        case EINPROGRESS:
+            return "EINPROGRESS";
+        case ESTALE:
+            return "ESTALE";
+#ifdef EUCLEAN
+        case EUCLEAN:
+            return "EUCLEAN";
+#endif
+#ifdef ENOTNAM
+        case ENOTNAM:
+            return "ENOTNAM";
+#endif
+#ifdef ENAVAIL
+        case ENAVAIL:
+            return "ENAVAIL";
+#endif
+#ifdef EISNAM
+        case EISNAM:
+            return "EISNAM";
+#endif
+#ifdef EREMOTEIO
+        case EREMOTEIO:
+            return "EREMOTEIO";
+#endif
+        case EDQUOT:
+            return "EDQUOT";
+#ifdef ENOMEDIUM
+        case ENOMEDIUM:
+            return "ENOMEDIUM";
+#endif
+#ifdef EMEDIUMTYPE
+        case EMEDIUMTYPE:
+            return "EMEDIUMTYPE";
+#endif
+        case ECANCELED:
+            return "ECANCELED";
+#ifdef ENOKEY
+        case ENOKEY:
+            return "ENOKEY";
+#endif
+#ifdef EKEYEXPIRED
+        case EKEYEXPIRED:
+            return "EKEYEXPIRED";
+#endif
+#ifdef EKEYREVOKED
+        case EKEYREVOKED:
+            return "EKEYREVOKED";
+#endif
+#ifdef EKEYREJECTED
+        case EKEYREJECTED:
+            return "EKEYREJECTED";
+#endif
+#ifdef EOWNERDEAD
+        case EOWNERDEAD:
+            return "EOWNERDEAD";
+#endif
+#ifdef ENOTRECOVERABLE
+        case ENOTRECOVERABLE:
+            return "ENOTRECOVERABLE";
+#endif
+#ifdef ERFKILL
+        case ERFKILL:
+            return "ERFKILL";
+#endif
+#ifdef EHWPOISON
+        case EHWPOISON:
+            return "EHWPOISON";
+#endif
+#ifdef EPROCLIM
+        case EPROCLIM:
+            return "EPROCLIM";
+#endif
+#ifdef EBADRPC
+        case EBADRPC:
+            return "EBADRPC";
+#endif
+#ifdef ERPCMISMATCH
+        case ERPCMISMATCH:
+            return "ERPCMISMATCH";
+#endif
+#ifdef EPROGUNAVAIL
+        case EPROGUNAVAIL:
+            return "EPROGUNAVAIL";
+#endif
+#ifdef EPROGMISMATCH
+        case EPROGMISMATCH:
+            return "EPROGMISMATCH";
+#endif
+#ifdef EPROCUNAVAIL
+        case EPROCUNAVAIL:
+            return "EPROCUNAVAIL";
+#endif
+#ifdef EFTYPE
+        case EFTYPE:
+            return "EFTYPE";
+#endif
+#ifdef EAUTH
+        case EAUTH:
+            return "EAUTH";
+#endif
+#ifdef ENEEDAUTH
+        case ENEEDAUTH:
+            return "ENEEDAUTH";
+#endif
+#ifdef EPWROFF
+        case EPWROFF:
+            return "EPWROFF";
+#endif
+#ifdef EDEVERR
+        case EDEVERR:
+            return "EDEVERR";
+#endif
+#ifdef EBADEXEC
+        case EBADEXEC:
+            return "EBADEXEC";
+#endif
+#ifdef EBADARCH
+        case EBADARCH:
+            return "EBADARCH";
+#endif
+#ifdef ESHLIBVERS
+        case ESHLIBVERS:
+            return "ESHLIBVERS";
+#endif
+#ifdef EBADMACHO
+        case EBADMACHO:
+            return "EBADMACHO";
+#endif
+#ifdef ENOATTR
+        case ENOATTR:
+            return "ENOATTR";
+#endif
+#ifdef EQFULL
+        case EQFULL:
+            return "EQFULL";
+#endif
+        default:
+            char* str = strerror(nErrno);
+            return std::to_string(nErrno) + " (" + std::string(str) + ")";
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/uunxapi.hxx b/sal/osl/unx/uunxapi.hxx
new file mode 100644
index 000000000..9f792765c
--- /dev/null
+++ b/sal/osl/unx/uunxapi.hxx
@@ -0,0 +1,83 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_SAL_OSL_UNX_UUNXAPI_HXX
+#define INCLUDED_SAL_OSL_UNX_UUNXAPI_HXX
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <rtl/ustring.h>
+
+#include <rtl/ustring.hxx>
+
+int stat_c(const char *cpPath, struct stat* buf);
+
+int lstat_c(const char *cpPath, struct stat* buf);
+
+int mkdir_c(OString const & path, mode_t mode);
+
+int open_c(const OString& path, int oflag, int mode);
+
+int utime_c(const char *cpPath, struct utimbuf *times);
+
+int ftruncate_with_name(int fd, sal_uInt64 uSize, const OString& path);
+
+namespace osl
+{
+    OString OUStringToOString(std::u16string_view s);
+
+    int access(const OString& strPath, int mode);
+
+    /***********************************
+     osl::realpath
+
+     @descr
+     The return value differs from the
+     realpath function
+
+     @returns sal_True on success else
+     sal_False
+
+     @see realpath
+     **********************************/
+
+    bool realpath(
+        const OUString& ustrFileName,
+        OUString& ustrResolvedName);
+
+    bool realpath(
+        const OString& strFileName,
+        OString& strResolvedName);
+
+    int lstat(const OUString& ustrPath, struct stat& buf);
+
+    int lstat(const OString& strPath, struct stat& buf);
+
+    int mkdir(const OString& aPath, mode_t aMode);
+} // end namespace osl
+
+#endif // INCLUDED_SAL_OSL_UNX_UUNXAPI_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sal/osl/unx/uunxapi.mm b/sal/osl/unx/uunxapi.mm
new file mode 100644
index 000000000..5a7e17f34
--- /dev/null
+++ b/sal/osl/unx/uunxapi.mm
@@ -0,0 +1 @@
+#include "uunxapi.cxx"