Mike Frysinger <vapier@xxxxxxxxxx> wrote: > On Monday 29 June 2009 21:33:44 Theodore Ts'o wrote: > > There was a very good reason why uuid state files were in > > /var/lib/libuuid instead of /var/run/uuidd. Some distributions wipe all > > of /var/run on reboot. The problem is for security reasons uuidd has to > > run as the libuuid user --- and the problem is directory needs to be set > > up correctly with the right permissions so it can written by the setuid > > libuuid daemon. So if you are going to move files into /var/run/uuidd, > > on at least some distributions, util-linux-ng will also have to provide > > init scripts to set up the directory correctly each time at boot. > > > > By placing those files in /var/lib/libuuid, it avoided this problem. > > what exactly is the purpose of these state files ? are they supposed to be > created fresh at every reboot, or are they expected to live across reboots ? > i think that is the question which should determine /var/run vs /var/lib, not > init.d issues. We are speaking of 3 different files here: 1. PID file for uuidd 2. request socket for uuidd 3. the clock.txt state file According to FHS PID files and sockets *must* be put in /var/run. That's why I changed the default, when I packaged this for SUSE (speaking explicitly in the past since for some reason I no longer work there). The state file clock.txt should of course be kept in /var/lib, because it should remain valid after a reboot. > > A similar issue is why the clock state file is in /var/lib instead of > > /var/run. > > the clock state file lives in /var/lib because it is supposed to stick around, > not get punted. not really a permission issue in any way. FHS specifically > states that /var/run should be cleaned/truncated while /var/lib is for state > data that is supposed to be retained across runs. I agree. Matthias -- To unsubscribe from this list: send the line "unsubscribe util-linux-ng" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
