Tests for an existing record lock on a file. 
               
            
 
            	 
             
               		
               Note: This routine is not supported in JVM COBOL. 
                  		
               
 
               	 
              
            	 
            
               Syntax:
 
               		 
               		call "CBL_TEST_RECORD_LOCK using file-handle
                                 record-offset
                                 record-length
                                 reserved 
               	   
            	 
            
               Parameters:
 
               		 
               		
                
                  		
                  
                      
                        			  
                        			  
                        			  
                        			 
                         
                           				
                            
                              				  
                              |  | Using call prototype (see 
                                 					 Key) | Picture | 
 
                           			 
                         
                        			 
                         
                           				
                            
                              				  
                              | file-handle | cblt-bytestream-handle | pic x(4) comp-5. | 
 
                           				
                            
                              				  
                              | record-offset | cblt-x4-compx | pic x(4) comp-x. | 
 
                           				
                            
                              				  
                              | record-length | cblt-x4-compx | pic x(4) comp-x. | 
 
                           				
                            
                              				  
                              | reserved | cblt-x2-compx | pic x(2) comp-x. | 
 
                           				
                            
                              				  
                              | return-code | cblt-x2-compx | pic x(2) comp-x. | 
 
                           			 
                         
                        		  
                     
                    
                  		
                 
               	 
              
            	 
            
               On Entry:
 
               		 
               		
                
                  		   
                  			 
                  -  
                     				file-handle 
                     			 
                  
- The handle returned from a successful CBL_OPEN_FILE or CBL_CREATE_FILE call. 
                     			 
                  
-  
                     				record-offset 
                     			 
                  
- The offset from the start of the file to the first byte to be tested for a lock. 
                     			 
                  
-  
                     				record-length 
                     			 
                  
- The number of bytes to test for a lock, starting from 
                     				record-offset. 
                     			 
                  
-  
                     				reserved 
                     			 
                  
- Reserved - must be zero. 
                     			 
                  
  
            	 
            
               On Exit:
 
               		 
               		
                
                  		   
                  			 
                  -  
                     				return-code 
                     			 
                  
- One of the following values: 
                     				
                     
                         
                           					  
                           					  
                           					 
                            
                              						
                               
                                 						  
                                 | 0 | Record not locked |   
                                 						  
                                 | 1 | Lock already owned by run-unit |   
                                 						  
                                 | 9/nnn | File status code indicating an error condition |