> On Aug 20, 2014, at 11:05, Alfred Perlstein <bri...@mu.org> wrote: > >> On 8/20/14 11:00 AM, Davide Italiano wrote: >> One of my personal goals for 11 is to get rid of cloning mechanism >> entirely, and pty(4) is one of the few in-kernel drivers still relying >> on such mechanism. >> It's not possible, at least to my understanding, converting pty(4) to >> cdevpriv(9) as happened with other drivers. This is mainly because we >> always need a pair of devices (/dev/ptyXX and /dev/ttyXX) and >> userspace loops over ptyXX and after it successfully opens it tries to >> open the other one with the same suffix. So, having a single device is >> not really enough. >> My option, instead, is that of removing pty(4), which is nothing more >> than a compatibility driver, and move pmtx(4) code somewhere else. >> The main drawback of the removal of this is that it makes impossible >> to run FreeBSD <= 7 jails and SSH into them. I personally don't >> consider this a huge issue, in light of the fact that FreeBSD-7 has >> been EOL for a long time, but I would like to hear other people >> comments. >> >> The code review for the proposed change can be found here: >> https://reviews.freebsd.org/D659 >> >> If I won't get any objection I'll commit this in one week time, i.e. >> August 27th. > I don't think that we want to break userland apps pre-7.x. Do you mean just > jails are broken? Or is all pre-7.x compat? I believe either is dicey. > What is the reason for getting rid of cloning? What is the difficulty in > maintaining the old interface?
Doing this would also break login shells, xterms, etc, right? Some companies I worked for built their appliance products on newer OSes, and they were based off of 6 and 7. This seems like something that deserves being tossed into the compat layer if it's something that can be converted over to the new interface. Thanks! -Garrett _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"