Detect first boot based on the existence of a coreos/first_boot file
in the EFI partition, and set "coreos.first_boot=detected" command line
argument when found. We use "detected" rather than "1" so the initramfs
knows that it should mount the ESP and delete the file. This lets us
defer clearing the first-boot flag until Ignition has run successfully,
without having to change the disk GUID after filesystems are mounted.
Continue detecting the first-boot disk GUID and adding the command-line
argument to randomize it, since we still want unique disk GUIDs
regardless of Ignition.
This is useful for emerges that are meant for incomplete rootfs's, such
as ACI building emerges. There are cases where the #! check is expected
to fail while doing those.
Prior to this, "${P}" would match upstream gentoo's distfile cache of
containerd, and that tarball would be used regardless of our SRC_URI
changing as we bumped the commit hash.
That resulted in us having an incorrect version of containerd installed
(and lying about the commit hash in --version to boot. Yikes!)
This fixes it by ensuring our package name actually uniquely identifies
the containerd package.
The choice to use the number of commits since the version as the patch
number is fairly arbitrary, but seemed like a sane and comparable number
to choose.
Due to containerd's somewhat fragile versioning, this number is not
technically unique (since there the v0.2.3 bump is commit to multiple
branches), but we can deal with issues if they happen.
Alternative fixes, such as FETCH_RESTRICT or other means of fooling the
cache logic, are more error prone and less faithful to portage's intent
that ${P} does uniquely identify an upstream source.
A different fix would be to use a CROS_WORKON style process for
containerd. There's no particular reason that approach is being avoided
other than the need to hack on containerd has so far been fairly small.
We can be more sloppy with versioning if/when we switch containerd over
to that process.
The choice to rename to 0.2.3 is because that commit (see
containerd/version.go) chooses to call itself 0.2.3, though it's newer
than the v0.2.5 tag. Docker 1.12 actually used a commit that contained
the 0.2.5 tag.
This is only an issue when the glibc versions differ between the
SDK and the sysroot. The M4 library detection functions in gettext
do bad things on their own, so bypass them.
The Ignition units are only used in the initramfs and are intertwined
with several other units in bootengine. Move them into bootengine for
simplicity.
