On Fri, Dec 26, 1997 at 11:16:15PM -0500, Joey Hess wrote: > Adam P. Harris wrote: > > Maybe that's not necessary. Rob Browning post got me thinking: even if > > you create the symlink in `debian/tmp/...', order it properly w.r.t. the > > actual shared lib, you do still need to call ldconfig in postinst in > > order to update /etc/ld.so.cache. > > I belive that is correct. David Engel can tell us for sure.
This is correct. > > Is this the issue? It would be a pretty simple addition to Ch 12 of the > > Packaging Manual. > > I don't think it's that simple. Let me quote the manual again: > > | If you do the above your package does not need to call ldconfig in its > | maintainer scripts. It is especially important not to call ldconfig in > | the postrm or preinst scripts in the case where the package is being > | upgraded (...) as ldconfig will see the temporary names that dpkg uses > | for the files while it is installing them and will make the shared > | library links point to them, just before dpkg continues the > | installation and removes the links! > > Pay especial attention to the end of that quote. This is a real problem. When > I was packaging aalib, I had it call ldconfig. Then, I read this. I slowed > my system down to a crawl with some spin loop code, and then installed > aalib. While aalib was installing, I ran "ls /usr/lib/aalib*" repeatedly in > another xterm. What I saw happen was just as the policy manual described: as > the package installed, dpkg made aalib.so.*.dpkg-tmp files, then ldconfig > was run, and symlinks where made pointing to them. > > This doesn't seem to happen always. Is it a race condition? (I don't see > how). Maybe it has to do with if you're upgrading. Anyway, I saw it happen. > It's a real problem and we have to figure out a way to deal with it if > indeed we need to run ldconfig to make it update ld.so.cache. (One way would > be to hack ldconfig to ignore the dpkg .tmp files.) It's not a problem if you don't, as the manual says, run ldconfig from the preinst or postrm scripts. To say it simpler, ldconfig should only be run from the postinst script. David -- David Engel ODS Networks [EMAIL PROTECTED] 1001 E. Arapaho Road (972) 234-6400 Richardson, TX 75081
