Any progress on this, by any chance? There was a suggested implementation in the bug report; should that go in policy as a footnote?
Julian > On Mon, 25 Oct 1999, Julian Gilbey wrote: > > > I am about to include this amendment in policy. However, I am stuck > > with the wording, as you say the following. > > > > Questions: What version number should be used in footnote 2? > > What do we do with the reference implementation? > > Good question. I didn't hear from Miquel van Smoorenburg (the > maintainer of liblockfile) since 1999-09-21. In his last mail he > thought about different way how to implement the changed the behavior > in liblockfile (by completely changing the API or by leaving the > fcntl() part to the calling program). > > > > So I think we should change the above paragraph to something which > > > explicitly says, how locking has to be implemented: > > > > > > All Debian MUAs, MTAs, MDAs and other mailbox accessing programs > > > (like IMAP daemons) have to lock the mailbox in a NFS-safe way. > > > This means that fcntl() locking has to be combined with dot > > > locking. To avoid dead locks, a program has to use fcntl() first > > > and dot locking after this or alternatively implement the two > > > locking methods in a non blocking way[1]. Using the functions > > > `maillock' and `mailunlock' provided by the `liblockfile*'[2] > > > packages is the recommended way to realize this. > > > > > > Footnotes: > > > [1] If it is not possible to establish both locks, the system > > > shouldn't wait for the second lock to be established, but > > > remove the first lock, wait a (random) time, and start over > > > locking again. > > > [2] liblockfile version >= .... (fill in a version number here, > > > which implements the above noted non blocking mechanism > > > without blocking). > > Maybe we should say "liblockfile version >> 1.01" until there is no > new version available yet? > > Miquel, what are you thinking about this? > > Ciao > > Roland > > -- > * [EMAIL PROTECTED] * http://www.spinnaker.de/ * > > Julian =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Julian Gilbey, Dept of Maths, QMW, Univ. of London. [EMAIL PROTECTED] Debian GNU/Linux Developer, see http://www.debian.org/~jdg
