errors when switching users (security hole?)

Harold L Hunt II
Sun Feb 29 07:21:00 GMT 2004

Sylvain Petreolle wrote:
> Alexander, dont you think startxwin.bat should exit 
> if XWin fails to start ?
> This should be pretty easy to support in a batch file :
> start XWin -multiwindow
> if not errorlevel 0 goto badexit

Won't work.  "start" launches XWin, then returns to the batch shell 
immediately.  So, the errorlevel is likely always 0 unless "start" can't 
find XWin.exe.  You wouldn't have a trivial way to check if XWin.exe 
actually succeeded in initializing.

Of course, I didn't read the earlier part of this thread, so maybe the 
idea is to determine only if "start" did not find XWin.exe, but I think 
the user gets a pretty reliable error message if that happens.


More information about the Cygwin-xfree mailing list