Date: Wed, 06 Nov 2013 16:16:21 -0800 From: Julian Elischer <julian@freebsd.org> To: Adrian Chadd <adrian@freebsd.org>, Peter Wemm <peter@wemm.org> Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, Gleb Smirnoff <glebius@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, John Baldwin <jhb@freebsd.org> Subject: Re: svn commit: r257696 - in head: libexec/rbootd share/man/man9 sys/compat/svr4 sys/net sys/sys Message-ID: <527ADBD5.5010908@freebsd.org> In-Reply-To: <CAJ-Vmo=e4QPTD88jNax4xjbDeiDHKBEb5h5_LOhJc1U1kK7_ow@mail.gmail.com> References: <201311051029.rA5ATmmM017799@svn.freebsd.org> <201311051156.09819.jhb@freebsd.org> <20131105192904.GG7577@FreeBSD.org> <CAGE5yCryiEotSqLfjq-oJrfVuqY5j-o2qXb-AZztR1=pZBz=Rg@mail.gmail.com> <CAJ-Vmo=e4QPTD88jNax4xjbDeiDHKBEb5h5_LOhJc1U1kK7_ow@mail.gmail.com>
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On 11/6/13, 9:00 AM, Adrian Chadd wrote: > I think the important thing here is that there _are_ organisations > that rely on some reasonable attempt at supporting historical APIs > where needed. > > This IMHO should've explicitly gone into a compat macro for people who > want support of this older stuff. > > My suggestion for a saner way to handle this deprecation schedule: > > * do the announce - I'd have to go looking for that, but we should be > placing these somewhere obvious (like a wiki page that lists > deprecated APIs in order, with the date/release they're going to be > deprecated); > * deprecate the userland use of the ioctl values first so they use the > newer API; > * deprecate the kernel API after the announced amount of time, hiding > things behind COMPAT_xxx as appropriate. > > > -adrian > the important thing for me is the ability to run *old jails*. such jails already require a special 'ps' for example (taken from a new /rescue) but there are apps that do special things for which new binaries are not available. typical case: freebsd user company in 1996: "Hey vendor can we have a binary of your "x" app for freebsd? Just compile your 'sun' version on a freebsd machine", vendor: "ok it'll take some time but we'll try it out.." 5 years later: vendor: "we never sold more than 2 of these on FreeBSD so we are discontinuing support.." 10 years later: user company: "thank god this still runs with the compat-4 option" 2014: "shit we're screwed" :-) OR "The binaries for this still run thank god, since we lost all the sources when mumble's machine crashed."
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