PRINT SELECTION FOR APAR - II06080 92/07/14                                     
APAR= II06080  SER=                            IN INCOROUT                      
APPARENT PROBLEM WITH DOSCOPY() SUBROUTINE ON OS/2 2.0                          
                                                                                
STAT= INTRAN       FESN5NFO000-000  CTID= II0000 ISEV= 4                        
SB92/06/09  RC          CL          PD           SEV= 4                         
                       PE=                       TYPE= I                        
RCOMP= INFOPCLIB    PC LIB INFO ITE RREL= R001                                  
FCOMP=                              PFREL= F     TREL= T                        
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DW92/06/09  RT          SC          FT                                          
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LC92/06/09  RU92/06/09                                                          
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SYSROUTE OF:          RET APAR=             PS=                                 
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SYSRES=      SYSIN=      SYSOUT=      CPU=             RE-IPL=                  
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PRE-SCREEN NO.=          RSCP= RS000                                            
ERROR DESCRIPTION:                                                              
Keywords:  OS2INFOAPAR OS2DOSAP                                                 
.                                                                               
I believe that the DosCopy() subroutine has a defect that                       
prevents reliable date and time stamp setting of the target file                
when copying from a remote DOS LAN server to a local OS/2 2.0                   
filesystem.                                                                     
                                                                                
I was recently informed of a situation in which a file copy                     
utility that I wrote (ccp - conditional copy) was incorrectly                   
setting the date and time of target files.  The ccp program                     
uses the DosCopy() subroutine to perform any actual file copy                   
operations.                                                                     
.                                                                               
For example, the bldtt.asm file had a source date and time of                   
6/28/91 and 12:55p.  After the copy, its target date and time                   
was 6/22/96 and 5:07p.  In fact, about 400 files out of a                       
total of 2000 files had incorrect date and time stamps after                    
the copy.  (The incorrect target date and time stamps are                       
neither those of the source file nor those of the current time                  
and date.)  The results appear repeatable:  the same files get                  
the same bad timestamps each time.                                              
.                                                                               
The environment is as follows:                                                  
                                                                                
     1) The ccp (conditonal copy) program, a 16-bit OS/2                        
        application, is running on an OS/2 2.0 system.  It                      
        uses the DosCopy() subroutine to perform the copy                       
        operation on each file that needs to be copied.                         
                                                                                
     2) The source files exist on a DOS machine running LAN                     
        Server.  The local OS/2 2.0 machine accesses the DOS                    
        machine's files via a remote drive that is set up by                    
        the NET USE command.                                                    
                                                                                
     3) About 2000 files were copied.  Of these, about 400                      
        files had date and time stamps on the OS/2 2.0 system                   
        that did not match the date and time stamp of the                       
        source file on the DOS system.  (No data was lost or                    
        corrupted, though).                                                     
                                                                                
     4) The results are repeatable:  Files that copy ok                         
        always copy ok.  Files that get an incorrect target                     
        date and time always get the same incorrect date and                    
        time.                                                                   
                                                                                
The standard COPY command & DOS-only version of ccp did not fail                
                                                                                
     1) The built-in OS/2 COPY command correctly set the                        
        date and time stamps of the target files.                               
                                                                                
     2) The DOS-only version of ccp also set the date and                       
        time stamps of the target files correctly.                              
.                                                                               
Notes about the ccp program:                                                    
                                                                                
    (a) The OS/2-only version was developed on OS/2 1.3 using C2                
        1.1 and the OS/2 1.3 toolkit.  Once it determines the                   
        exact source and target names of a file to copy,it calls                
        the DosOpen subroutine to perform the actual copy.                      
                                                                                
   (b) The DOS-only version was developed using the C/2 1.1 on a                
       DOS machine.  It uses the open, close, read, and write                   
       subroutines to copy the file's data (it ignores EAs).  It                
       also uses the _dos_setftime and _dos_setfileattr                         
       subroutines to set a target file's date, time, and                       
       attributes to those of the source file.                                  
LOCAL FIX:                                                                      
See above description.