fix SvStream to not disagree with sal on sizeof struct stat

A temporary tweak to restore build-ability; the oslDirectory
change needs a little more thought & public exposure, but rsc
no longer crashes during compile ...

sal/inc/osl/detail/file.h

@@ -58,17 +58,13 @@ SAL_DLLPUBLIC oslFileError SAL_CALL osl_openFilePath(
     oslFileHandle *pHandle,
     sal_uInt32 uFlags );
 
-/* Wrappers for stat() and lstat() with Android-specific hook
-   for files inside the .apk.
-*/
+/* Compare directory items for being the same underlying file
+ * this unwinds unix hard-links and symlinks etc.
+ */
 
-SAL_DLLPUBLIC oslFileError SAL_CALL osl_statFilePath(
-    const char *cpFilePath,
-    struct stat *statb );
+SAL_DLLPUBLIC sal_Bool SAL_CALL osl_identicalDirectoryItem(oslDirectory a, oslDirectory b);
 
-SAL_DLLPUBLIC oslFileError SAL_CALL osl_lstatFilePath(
-    const char *cpFilePath,
-    struct stat *statb );
+SAL_DLLPUBLIC oslFileError SAL_CALL osl_lstatFilePath( const char *cpFilePath, struct stat *statb );
 
 /*  Get the OS specific "handle" of an open file. */
 

sal/inc/osl/file.hxx

@@ -1389,9 +1389,9 @@ public:
 
 class DirectoryItem: public FileBase
 {
-    oslDirectoryItem _pData;
 
 public:
+    oslDirectoryItem _pData;
 
     /** Constructor.
     */

sal/osl/unx/file_stat.cxx

@@ -448,15 +448,31 @@ oslFileError SAL_CALL osl_setFileTime (
     return osl_psz_setFileTime( path, pCreationTime, pLastAccessTime, pLastWriteTime );
 }
 
-oslFileError
-SAL_CALL osl_statFilePath( const char *cpFilePath, struct stat *statb )
+sal_Bool
+SAL_CALL osl_identicalDirectoryItem( oslDirectoryItem a, oslDirectoryItem b)
 {
+    DirectoryItem_Impl *pA = (DirectoryItem_Impl *) a;
+    DirectoryItem_Impl *pB = (DirectoryItem_Impl *) b;
+    if (a == b)
+        return sal_True;
+    /* same name => same item, unless renaming / moving madness has occurred */
+    if (rtl_ustr_compare_WithLength(
+                pA->m_ustrFilePath->buffer, pA->m_ustrFilePath->length,
+                pB->m_ustrFilePath->buffer, pB->m_ustrFilePath->length ) == 0)
+        return sal_True;
+
+    fprintf (stderr, "We have to do an inode compare !\n");
+
+    /*
     int rc = stat_c( cpFilePath, statb );
 
+        Stat.st_ino == ...
     if (rc == -1)
         return oslTranslateFileError(OSL_FET_ERROR, errno);
     else
         return osl_File_E_None;
+    */
+    return sal_False;
 }
 
 oslFileError

sal/util/sal.map

@@ -648,7 +648,7 @@ PRIVATE_textenc.1 { # LibreOffice 3.6
 PRIVATE_file.1 { # LibreOffice 3.6
     global:
         osl_openFilePath;
-        osl_statFilePath;
+        osl_identicalDirectoryItem;
         osl_lstatFilePath;
         osl_getFileOSHandle;
 };

tools/source/stream/strmunx.cxx

@@ -64,10 +64,10 @@ namespace { struct LockMutex : public rtl::Static< osl::Mutex, LockMutex > {}; }
 
 class InternalStreamLock
 {
-    sal_Size            m_nStartPos;
-    sal_Size            m_nEndPos;
-    SvFileStream*   m_pStream;
-    struct stat     m_aStat;
+    sal_Size           m_nStartPos;
+    sal_Size           m_nEndPos;
+    SvFileStream*      m_pStream;
+    osl::DirectoryItem m_aItem;
 
     InternalStreamLock( sal_Size, sal_Size, SvFileStream* );
     ~InternalStreamLock();
@@ -87,11 +87,11 @@ InternalStreamLock::InternalStreamLock(
         m_nEndPos( nEnd ),
         m_pStream( pStream )
 {
-    rtl::OString aFileName(rtl::OUStringToOString(m_pStream->GetFileName(),
-        osl_getThreadTextEncoding()));
-    osl_statFilePath( aFileName.getStr(), &m_aStat );
+    osl::DirectoryItem::get( m_pStream->GetFileName(), m_aItem );
     LockList::get().push_back( this );
 #if OSL_DEBUG_LEVEL > 1
+    rtl::OString aFileName(rtl::OUStringToOString(m_pStream->GetFileName(),
+                                                  osl_getThreadTextEncoding()));
     fprintf( stderr, "locked %s", aFileName.getStr() );
     if( m_nStartPos || m_nEndPos )
         fprintf(stderr, " [ %ld ... %ld ]", m_nStartPos, m_nEndPos );
@@ -112,7 +112,7 @@ InternalStreamLock::~InternalStreamLock()
     }
 #if OSL_DEBUG_LEVEL > 1
     rtl::OString aFileName(rtl::OUStringToOString(m_pStream->GetFileName(),
-        osl_getThreadTextEncoding()));
+                                                  osl_getThreadTextEncoding()));
     fprintf( stderr, "unlocked %s", aFileName.getStr() );
     if( m_nStartPos || m_nEndPos )
         fprintf(stderr, " [ %ld ... %ld ]", m_nStartPos, m_nEndPos );
@@ -125,13 +125,20 @@ sal_Bool InternalStreamLock::LockFile( sal_Size nStart, sal_Size nEnd, SvFileStr
 #ifndef BOOTSTRAP
     osl::MutexGuard aGuard( LockMutex::get() );
 #endif
-    rtl::OString aFileName(rtl::OUStringToOString(pStream->GetFileName(),
-        osl_getThreadTextEncoding()));
-    struct stat aStat;
-    if( osl_statFilePath( aFileName.getStr(), &aStat ) != osl_File_E_None )
-        return sal_False;
+    osl::DirectoryItem aItem;
+    if (osl::DirectoryItem::get( pStream->GetFileName(), aItem) != osl::FileBase::RC::E_None )
+    {
+        SAL_INFO("tools", "Failed to lookup stream for locking");
+        return sal_True;
+    }
 
-    if( S_ISDIR( aStat.st_mode ) )
+    osl::FileStatus aStatus( osl_FileStatus_Mask_Type );
+    if ( aItem.getFileStatus( aStatus ) != osl::FileBase::RC::E_None )
+    {
+        SAL_INFO("tools", "Failed to stat stream for locking");
+        return sal_True;
+    }
+    if( aStatus.getFileType() == osl::FileStatus::Type::Directory )
         return sal_True;
 
     InternalStreamLock* pLock = NULL;
@@ -139,7 +146,7 @@ sal_Bool InternalStreamLock::LockFile( sal_Size nStart, sal_Size nEnd, SvFileStr
     for( size_t i = 0; i < rLockList.size(); ++i )
     {
         pLock = rLockList[ i ];
-        if( aStat.st_ino == pLock->m_aStat.st_ino )
+        if( osl_identicalDirectoryItem( aItem._pData, pLock->m_aItem._pData) )
         {
             sal_Bool bDenyByOptions = sal_False;
             StreamMode nLockMode = pLock->m_pStream->GetStreamMode();