Enhance warning verbosity in TQFile (unix)

(cherry picked from commit fdc4699bcb)

src/tools/qfile_unix.cpp

@@ -168,7 +168,7 @@ bool QFile::open( int m )
 {
     if ( isOpen() ) {				// file already open
 #if defined(QT_CHECK_STATE)
-	qWarning( "QFile::open: File already open" );
+	qWarning( "QFile::open: File (%s) already open", fn.latin1() );
 #endif
 	return FALSE;
     }
@@ -182,7 +182,7 @@ bool QFile::open( int m )
     setMode( m );
     if ( !(isReadable() || isWritable()) ) {
 #if defined(QT_CHECK_RANGE)
-	qWarning( "QFile::open: File access not specified" );
+	qWarning( "QFile::open: File access (%s) not specified", fn.latin1() );
 #endif
 	return FALSE;
     }
@@ -340,7 +340,7 @@ bool QFile::open( int m, FILE *f )
 {
     if ( isOpen() ) {
 #if defined(QT_CHECK_RANGE)
-	qWarning( "QFile::open: File already open" );
+	qWarning( "QFile::open: File (%s) already open", fn.latin1() );
 #endif
 	return FALSE;
     }
@@ -412,7 +412,7 @@ bool QFile::open( int m, int f )
 {
     if ( isOpen() ) {
 #if defined(QT_CHECK_RANGE)
-	qWarning( "QFile::open: File already open" );
+	qWarning( "QFile::open: File (%s) already open", fn.latin1() );
 #endif
 	return FALSE;
     }
@@ -508,7 +508,7 @@ bool QFile::at( Offset pos )
 {
     if ( !isOpen() ) {
 #if defined(QT_CHECK_STATE)
-	qWarning( "QFile::at: File is not open" );
+	qWarning( "QFile::at: File (%s) is not open", fn.latin1() );
 #endif
 	return FALSE;
     }
@@ -564,11 +564,11 @@ Q_LONG QFile::readBlock( char *p, Q_ULONG len )
 #endif
 #if defined(QT_CHECK_STATE)
     if ( !isOpen() ) {
-	qWarning( "QFile::readBlock: File not open" );
+	qWarning( "QFile::readBlock: File (%s) not open", fn.latin1() );
 	return -1;
     }
     if ( !isReadable() ) {
-	qWarning( "QFile::readBlock: Read operation not permitted" );
+	qWarning( "QFile::readBlock: Read operation not permitted in file %s ", fn.latin1() );
 	return -1;
     }
 #endif
@@ -633,11 +633,11 @@ Q_LONG QFile::writeBlock( const char *p, Q_ULONG len )
 #endif
 #if defined(QT_CHECK_STATE)
     if ( !isOpen() ) {				// file not open
-	qWarning( "QFile::writeBlock: File not open" );
+	qWarning( "QFile::writeBlock: File (%s) not open", fn.latin1() );
 	return -1;
     }
     if ( !isWritable() ) {			// writing not permitted
-	qWarning( "QFile::writeBlock: Write operation not permitted" );
+	qWarning( "QFile::writeBlock: Write operation not permitted in file %s ", fn.latin1() );
 	return -1;
     }
 #endif