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Having content in /boot in OSTree was always ugly, because we ended up
mounting over it in the deployment location at boot.
This was even worse in the anaconda rpmostreepayload code, because of
the juggling of the mount point that needed to take place.
Trying to add a GRUB2 backend to OSTree is what finally forced this
change. Now, we put kernels (in the tree) by default in *both* /boot
and /usr/lib/ostree-boot.
OSTree itself knows to look in both locations. Anaconda is going to
just hard require trees with the new location though.
This would probably be best if we invoked systemctl in the compose
tooling, but at the moment we don't have any execution of target code
on the host. It's fine to assume that it's in /usr/lib.
We can revisit this if we start doing chrooted/containerized
execution.
Since the treefile format now supports includes, we would need to
either include the whole chain, or just the expanded portion we use in
the compose. This patch does the latter.
This should allow a client to take the same treefile and generate a
similar tree (if they want to reproduce with the same RPMs, those can
be extracted from the RPM database inside the tree).
As a developer, a workflow I have for testing things is to create
an RPM, toss it into a local yum repository, then do a compose.
However at the moment to add the local overrides I have to edit the
treefile, which is annoying. Let's add a commandline override for
this.
Note this also deletes the old "repos_data" code which was not being
used.
In 827e711 we stopped running two yum transactions. This means the
code that detects if the repodir exists in the yum installroot will
always return false and the code is dead.
I had an epiphany today while working on
https://bugzilla.redhat.com/show_bug.cgi?id=1098304 - I realized that
I can just do an install, and then copy over everything except the
root entries from /etc/passwd into /usr/lib/passwd.
No need for a patched shadow-utils. No need to modify the
/etc/nsswitch.conf before doing the install root. It totally works.
I have no idea why I originally overcomplicated this.
The thing that sucks a bit about this code is that I have to drop to
the FILE * APIs so that I can use the glibc APIs for processing
group/shadow.
Also, the way I deduplicated the code paths for processing
passwd/group is crappy, but I think it's better than duplicating them
(as systemd-sysusers does).
The good: We don't need a two-step RPM transaction, we don't need
a patch for shadow-utils, it's just saner
The bad: Code is not the most beautiful? Not really bad.
The ugly: I didn't think of this in the first place and spent
months beating my head against the wall of shadow-utils...
They get deleted anyways since we blow away the tmpdir, but we expect
people to be using a local HTTP proxy. We stopped trying to cache
packages internally as that caused conflicts with the yum lock with
concurrently executing composes.
Currently the systemd RPM ships with default.target ->
graphical.target, which is either itself changed by Anaconda (via
parsing /etc/sysconfig/desktop, which...anyways let's stop here).
Or anaconda might set it directly to multi-user.target.
For rpm-ostree, we perform some minimal level of "preconfiguration"
per tree, so they are directly usable without an intervening
installer.
As an example for fedora-atomic/base/core, we just want
multi-user.target. Thus, this patch provides the treefile author a
declarative mechanism to set it.
Currently on an Atomic compose, I'm seeing abrtd trying to write to
/usr/share/rpm/.dbenv.lock, which is denied by policy because it's
usr_t. There are multiple ways to address this, but there's no good
reason to leave the lock files and __db* files around.
rpm appears to operate correctly without them if calling process
merely gets EROFS.
And do the same for "sign". This way we can have the compose server
utilities cleanly separated from what most people will see, which is
the client side tools.
