On Sep 24 08:49, Keith Christian wrote: > > Does a call to chmod fail as well? If so, can you create an strace of > > such a chmod, like this: > > > > $ touch foo > > $ strace -o chmod.trace chmod 444 foo > > > > and send the chmod.trace file to the list? > > > > Thanks, Corinna, > > Yes, I receive "chmod: changing permissions of `foo': Permission > denied" when executing chmod 444 foo.
Here's the problem: fhandler_base::open: C0000022 = NtCreateFile (0x0, E0100, \??\Z:\foo, io, NULL, 0, 7, 1, 4000, NULL, 0) Cygwin tries to open the file for writing the control information requesting WRITE_DAC and WRITE_OWNER access, but the remote filesystem refuses the request with an "Access denied" status code. I was going to say that we can't do anything against that, but then it occured to me that this isn't quite right. Actually we don't need WRITE_OWNER access for the chmod functionality, so it's perhaps still possible to call chmod on that remote filesystem if cygwin omits the WRITE_OWNER access flag when opening the file. I applied a tiny patch to Cygwin, which only requests WRITE_DAC, not WRITE_OWNER in calls to chmod. Please test the next developer's snapshot from http://cygwin.com/snapshots/ and see if it fixes your problem. If you still get "Permission denied", it's actually a problem of the server which doesn't allow to change the ACL of a file via the share for some reason. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
