On Sep 3 16:18, John Carey wrote: > On Sep 03 12:37 Corinna Vinschen wrote: > > On Sep 2 23:32, John Carey wrote: > > > In Aug 17 10:15, Corinna Vinschen wrote: > > > > I just released 1.7.6-1. > > > ... > > > > What changed since Cygwin 1.7.5: > > > > ================================ > > > > > > > > - Cygwin handles the current working directory entirely on its own. The > > > > Win32 current working directory is set to an invalid path to be out of > > > > the way. This affects calls to the Win32 file API (CreateFile, etc.). > > > > See > > > > http://cygwin.com/htdocs/cygwin-ug-net/using.html#pathnames-win32-api > > > > > > Thank you very much for the fix! > > > > > > I've been running tests against Cygwin 1.7.6, and then 1.7.7, > > > and those sporadic, non-deterministic failures in CreatePipe > > > did stop after the 1.7.6 upgrade, and are still gone in 1.7.7. > > > I think it's been long enough to conclude that it is not just > > > the non-determinism--it really is fixed, as expected. > > > > > > I understand that this issue opened a can of worms; > > > thanks again for your efforts to overcome those difficulties. > > > > I still don't like the final workaround, which is, to set the Win32 CWD > > to the Cygwin CWD. It would be nice if we could revert that change to > > the pre-1.7.6 behaviour in a Vista-friendly way. If you ever find out > > how to make sure that the new handle in the PEB's user parameter block > > is used even on Vista and later, pray tell me. > > Thus far the only ideas I have come up with are somewhat > shaky and go well beyond the documented Win32 API. > (If only there was the equivalent of dup2(), but for Win32 > handles!!!)
ACK. > Just how much undocumented behavior is > tolerable, do you think? Up to XP/2K3, we can simply set the handle in the user parameter block and be done with it, just as in 1.7.5, but without the Vista workaround. The problem only starts with Vista. I have no objections to use undocumented features, if they work. If there's any way to replace the cwd handle with our own *and* keep the Win32 API happy, I'll take it. 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
