Fix for AR-565. Checked out files can be edited and saved via CIFS without any warnings being given that the save failed.

Locked files are now marked as read-only, and may also be marked as offline if the <offlineFiles/> config is enabled.
An attempt to open a locked file for write returns an access denied status to the CIFS client.
There is also a minor fix to the file state caching of folders that are not opened/referenced by the client directly, this
caused them to be expire from the cache causing path lookups to require a database hit. The expiry time is now bumped when a
folders cached file state is used to find the NodeRef for a path.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2948 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/smb/server/repo/CifsHelper.java

@@ -214,16 +214,21 @@ public class CifsHelper
             
             // Check the lock status of the file
             
-            if ( hasLockedFilesAsOffline())
-            {
             String lockTypeStr = (String) nodeProperties.get(ContentModel.PROP_LOCK_TYPE);
                     
             if ( lockTypeStr != null)
             {
-                    // File is locked so mark it as offline
+                // File is locked so mark it as read-only and offline
 
-                    fileInfo.setFileAttributes(fileInfo.getFileAttributes() + FileAttribute.NTOffline);
+            	int attr = fileInfo.getFileAttributes();
-                }
+            	
+            	if (( attr & FileAttribute.ReadOnly) == 0)
+            		attr += FileAttribute.ReadOnly;
+            	
+                if ( hasLockedFilesAsOffline())
+                	attr += FileAttribute.NTOffline;
+                
+                fileInfo.setFileAttributes( attr);
             }
         }
         

source/java/org/alfresco/filesys/smb/server/repo/ContentDiskDriver.java

@@ -519,20 +519,24 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
             {
                 // Get the file information for the node
                 
+                session.beginTransaction(transactionService, true);
                 finfo = cifsHelper.getFileInformation(nodeRef);
 
                 // DEBUG
                 
-                if ( logger.isDebugEnabled())
+                if ( logger.isInfoEnabled())
                     logger.debug("getInfo using cached noderef for path " + path);
             }
             
             // If the required node was not in the state cache, the parent folder node might be
             
-            session.beginTransaction(transactionService, true);
             
             if ( finfo == null)
             {
+            	//	Start a transaction
+            	
+                session.beginTransaction(transactionService, true);
+                
                 String[] paths = FileName.splitPath( path);
                 
                 if ( paths[0] != null && paths[0].length() > 1)
@@ -548,7 +552,7 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
                         
                         // DEBUG
                         
-                        if ( logger.isDebugEnabled())
+                        if ( logger.isInfoEnabled())
                             logger.debug("getInfo using cached noderef for parent " + path);
                     }
                 }
@@ -907,6 +911,13 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
                     permissionService.hasPermission(nodeRef, PermissionService.DELETE) == AccessStatus.DENIED)
                 throw new AccessDeniedException("No delete access to " + params.getFullPath());
 
+            // Check if the file has a lock
+            
+            String lockTypeStr = (String) nodeService.getProperty( nodeRef, ContentModel.PROP_LOCK_TYPE);
+            
+            if ( params.hasAccessMode(AccessMode.NTWrite) && lockTypeStr != null)
+                throw new AccessDeniedException("File is locked, no write access to " + params.getFullPath());
+            
             //  Check if there is a file state for the file
 
             FileState fstate = null;
@@ -1042,7 +1053,7 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
                         
                         // DEBUG
                         
-                        if ( logger.isDebugEnabled())
+                        if ( logger.isInfoEnabled())
                             logger.debug("Create file using cached noderef for path " + paths[0]);
                     }
                 }
@@ -1084,6 +1095,7 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
                         "   node: " + nodeRef + "\n" +
                         "   network file: " + netFile);
             }
+            
             return netFile;
         }
         catch (org.alfresco.repo.security.permissions.AccessDeniedException ex)
@@ -1860,6 +1872,12 @@ public class ContentDiskDriver implements DiskInterface, IOCtlInterface
                 // check that the node exists
                 if (nodeService.exists(fstate.getNodeRef()))
                 {
+                	// Bump the file states expiry time
+                	
+                    fstate.setExpiryTime(System.currentTimeMillis() + FileState.DefTimeout);
+                    
+                    // Return the cached noderef
+                    
                     return fstate.getNodeRef();
                 }
                 else