>"Pierre A. Humblet" wrote: > >2) On WinNT, local deliveries fail on line 765 of transport.c > while ((len = read(deliver_datafile, deliver_in_buffer, >I reproduced the situation in the attached try.c >A parent process opens and locks a file (using fcntl), >and then forks a child. It turns out that the child cannot >read the file. Is it a Cygwin bug (latest everything)?
This answers my own question to close this matter. Cygwin's file locking is based on Windows LockFileEx(), which uses a mandatory locking method, rather than a cooperative one as in Unix. For a tutorial, see e.g. http://www.netapp.com/tech_library/3024.html Making Cygwin's locking more Unix-like would be a big task. If you run into this issue my advice is to modify the application. Pierre -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
