On Sun, Dec 25, 2005 at 03:34:43PM +0000, Colin Watson wrote: > On Sun, Dec 25, 2005 at 01:51:00AM +0100, Sven Luther wrote: > > On Sat, Dec 24, 2005 at 05:30:26PM +0000, Colin Watson wrote: > > > On Sat, Dec 24, 2005 at 05:03:17PM +0100, Sven Luther wrote: > > > > Notice that the debconf helper scripts provide stdout on &3, so any > > > > scripts writing to stdout only need to redirect their output to &3, no > > > My impression is that these days maintainer scripts are much better > > > about not mixing up debconf interaction with normal use of stdout, and > > > so it's still possible that the fd 3 hack will be removed some day. > > Ok, now i read it all, shouldn't really be replying to email after the > > christmas party ... :) > Likewise, on Christmas Day I haven't really looked at this issue in any > depth. :-) > > So, do you have any idea of what is going wrong here and how to fix it ? I > > mean having hosed powerpc kernels over christmas is really not the nicest > > thing to have happen, and i really don't understand the subtleties of what is > > going on here. > > k-p uses debconf (probably using the perl helpers you mentioned), and does a > > db_stop before calling the script hooks. > The STOP command causes the debconf frontend to shut down; that would > certainly break anything trying to talk to debconf after it. May be > worth removing that and seeing if things start working. > I haven't checked if kernel-package runs anything else that would > require it to use STOP. It seems a little unlikely that it would be > starting up any daemons, though. Note a common misconception: the STOP > command does *not* put your file descriptors back the way they were > before you started the debconf frontend. Indeed, not only does STOP not restore your file descriptors, it also leaves a sentinel value in the environment which prevents debconf-using children from successfully restarting the frontend. STOP should only be used when you need to force-kill the frontend because of other processes that will otherwise leave dangling file descriptors open to it after your scripts exit. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. vorlon@debian.org http://www.debian.org/
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