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Tracking issue: https://github.com/projectatomic/rpm-ostree/issues/1081
To briefly recap: Let's experiment with doing ostree-in-RPM, basically the
"compose" process injects additional data (SELinux labels for example) in an
"ostree image" RPM, like `fedora-atomic-host-27.8-1.x86_64.rpm`. That "ostree
image" RPM will contain the OSTree commit+metadata, and tell us what RPMs we
need need to download. For updates, like `yum update` we only download changed
RPMs, plus the new "oirpm". But SELinux labeling, depsolving, etc. are still
done server side, and we still have a reliable OSTree commit checksum.
This is a lot like [Jigdo](http://atterer.org/jigdo/)
Here we fully demonstrate the concept working end-to-end; we use the
"traditional" `compose tree` to commit a bunch of RPMs to an OSTree repo, which
has a checksum, version etc. Then the new `ex commit2jigdo` generates the
"oirpm". This is the "server side" operation. Next simulating the client side,
`jigdo2commit` takes the OIRPM and uses it and downloads the "jigdo set" RPMs,
fully regenerating *bit for bit* the final OSTree commit.
If you want to play with this, I'd take a look at the `test-jigdo.sh`; from
there you can find other useful bits like the example `fedora-atomic-host.spec`
file (though the canonical copy of this will likely land in the
[fedora-atomic](http://pagure.io/fedora-atomic) manifest git repo.
Closes: #1103
Approved by: jlebon
`test -n` would always be true. Also while I have the patient open
let's make writing the file atomic. Maybe someday I'll be motivated
enough to write an `O_TMPFILE` patch for bash.
Closes: #1103
Approved by: jlebon
When we added the `--ex-unified-core` option our caching story got
very messy because the non-unified core caches RPMs, but unified
does ostree repo caching.
For jigdo, we want the RPMs. Fix this by mirroring the RPMs using
`--download-only` and pointing the tests consistently at that.
Closes: #1122
Approved by: jlebon
With jigdo this is a very useful as one needs the ability to bind together the
RPMs and commits.
And for the compose tests this is a more reliable way to do caching anyways.
Closes: #1122
Approved by: jlebon
We originally needed the pkgcache to be a separate repo due to ostree's
overzealous pruning policies. The idea was to maintain multiple commits
in each pkg branch for different SELinux policies. In practice, there's
not much use in maintaining old copies and it's just easier to always
relabel on the fly. So then, the need for a separate repo completely
melts away.
This helps simplify the mental model a bit and allows us to avoid subtle
issues like #1047. Note however that the core is still capable of
handling split repos for the `--ex-unified-core` compose use case. Once
that and the jigdo work are a bit more settled, we can have a clearer
picture of how to simplify the core further.
The tricky bit is migrating the cache. When deploying, we check if a
pkgcache repo exists and migrate its refs if so. We then leave behind a
symlink to the system repo to remain compatible with older rpm-ostrees.
Closes: #1055
Approved by: cgwalters
Instead of just giving just the package that would be replaced, also
print out the package that replaces it, as well as the repo it comes
from.
Closes: #1113Closes: #1120Closes: #1121
Approved by: cgwalters
Noticed this while working on diff output somewhere else. I was
initially thinking of making use of this there too, but it's not quite
the right fit and would require a lot of churn.
Closes: #1121
Approved by: cgwalters
Rather than trying to be smart and re-use the same `GPtrArray`, let's
just segregate each check into its own scope to make it easier to
follow.
Diff best viewed with whitespace detection on.
Closes: #1121
Approved by: cgwalters
When writing this code, I made the false assumption that the nevra
string lives as long as the pool does, i.e. as long as we have a
reference to its `DnfSack`.
In fact, they have undefined lifetimes. Notably any place in which one
calls `dnf_package_get_nevra` a lot may result in the invalidation of
previously returned nevras.
This patch ensures that we copy the string in the few places where we
are susceptible to this.
There is a related libdnf patch[1] which tightens the definition here so
that we can assume the string at least lives as long as its
`DnfPackage`. It turns out that the callsites addressed in this patch
are also those in which we would break that assumption. IOW, this patch
is needed regardless of how [1] goes.
[1] https://github.com/rpm-software-management/libdnf/pull/388Closes: #1119
Approved by: cgwalters
Right now each ostree txn incurs a `syncfs()`; see
https://github.com/ostreedev/ostree/issues/1184
And before this patch, we were doing a txn per package import.
We can really do better in libostree - we'll fix that, but in the short term
let's use a bigger txn for every package. However, the obvious change here of
simply hoisting up the txn is that on failure for imports, we'd discard all
downloaded packages. We fix that by changing the auto txn API to have
a `commit_on_failure` boolean, and use it in cases where we're doing
imports.
This is prep work for jigdo, where we'll be using the import path all the time.
My bigger plan is to do multithreaded imports.
Closes: #1116
Approved by: jlebon
I think the `ex container` path supercedes this; it was really just a demo, and
having it around is annoying since I want to change the importer API and I have
to change it here too.
Closes: #1116
Approved by: jlebon
I was playing with `--download-only` a bit with an eye to
having something like this be used by Cockpit/gnome-software instead
of what it's doing now, but a problem is that at the moment we
don't have a way to reflect the "changed" state back to clients.
This is a first step towards that by simply printing a different
message.
I think really to make all of this work more nicely though, including
supporting e.g. rpm database diffs, we are going to have to instead
work on the [pending deployment](https://github.com/ostreedev/ostree/issues/545)
path. That way we'll have done the depsolve, stored repo timestamps
etc.; we'll be able to accurately show what *did* change rather than
try to recreate what will happen on the next `rpm-ostree upgrade --cache-only`.
Closes: #1118
Approved by: jlebon
It took me way, way, way too long to debug that my dev container somehow missing
`ostree-grub2` caused the script to fail early, but we'd still continue trying
to sync, leading to us not actually changing the installed `rpm-ostree` binary,
leading to test suite failures.
Also add the chmod hammer at the top so we can delete even if we fail after
doing an rsync.
Closes: #1115
Approved by: jlebon
Add editor option for kernel arguments. The logic
was taken from the ostree-commit editor.
The user now can edit the kernel arguments from an editor.
The synchronization related issue is resolved by reloading the
sysroot and see if the sysroot has been changed since the call
of the editor prompt.
Closes: #1097
Approved by: jlebon
This is for: https://pagure.io/atomic-wg/issue/387
Right now the way libostree stages objects into `${repo}/tmp` is basically an
anti-pattern for (possibly concurrent) operations on NFS. Having multiple
processes try to clean the tmpdir invites races, and there's really no reason to
"stage" all of the content.
(Unfortunately unless NFS supports `O_TMPFILE` we still need temp files,
but that's a separate issue)
In this patch we auto-detect NFS which should make the Fedora pungi runs "just
work", but I also added an environment variable to opt-in.
Closes: #1111
Approved by: jlebon
In the jigdo path we don't actually want to import the OIRPM literally
into ostree. I considered adding jigdo logic into `rpmostree-unpacker.c`
but it'd be a mess as the functionality is quite logically separate
from importing.
So split off an `unpacker-core.c` file which has the bare libarchive+RPM
helpers, and rename `RpmOstreeUnpacker` to `RpmOstreeImporter`.
Closes: #1110
Approved by: jlebon
We removed this in review, but I rediscovered why I added it. We
fail the `g_assert (sepolicy_matches)` if we already had packages
done with the final label when we go to reuse the cache.
(Basically, if we use the cache multiple times it's hard to avoid
relabeling all the time which is unfortunate...gets back a bit to
a way to annotate pkgcache commits as supporting multiple policies)
Closes: #1109
Approved by: jlebon
I didn't try porting some of the other contexts yet...I want to see
if this works.
Note that FAHC was switched to 27, so it's only luck that things
work on 26.
Closes: #1108
Approved by: jlebon
The "--ex" prefix here means it's an experimental option. A tremendous change
here is that start to support non-uid 0, but there are various things to fix there;
the unpacker for example needs to learn to set imported objects fully based
on the rpmfi information (i.e. default to uid 0, since libarchive gives the
current uid by default).
And even when run as uid 0, there are some bugs, though I'm not sure
of any showstoppers yet. For example, dracut's `dracut-install` calls
`cp --preserve=xattrs` which fails to copy the `user.ostreemeta` xattrs
from a checkout (it shouldn't be copying that anyways...)
Nevertheless, the infrastructure behind this really helps (is almost a hard
requirement for) the [jigdo effort](https://github.com/projectatomic/rpm-ostree/issues/1081).
Which is really only true due to SELinux - we need to import the packages,
then generate the final tree to get the final policy, then use that policy
to relabel all of the packages.
Closes: #940
Approved by: jlebon
In an unprivileged case, we can't do this on the real filesystem. For
`ex container`, we want to completely ignore uid/gid. I added a test
installing `httpd` which failed previously.
TODO: For non-root `--ex-unified-core` we need to do it as a commit modifier.
Closes: #940
Approved by: jlebon
It seems that libarchive ends up returning `getuid()` actually,
possibly because the cpio doesn't actually have ownership information?
Anyways, what we really want here is to set `0/0`, which is what
happens for the `ex container` path via
`OSTREE_REPO_COMMIT_MODIFIER_FLAGS_CANONICAL_PERMISSIONS`.
Prep for unified core 🌐.
Closes: #940
Approved by: jlebon
Not immediate prep for anything, I'd just been looking at this
code recently.
(Also a bit of `glnx_throw_errno` porting)
Closes: #1107
Approved by: jlebon
More work for unified core; this was one of the biggest parts of the `ostree
diff` when comparing a unified core treecompose of Fedora Atomic Host versus
the libdnf path.
This is also the first case where we're teaching the pkgcache to redownload
based on state.
Closes: #1105
Approved by: jlebon
Previously in 4a86bdd196 "postprocess: Undo Fedora SELinux policy move"
we fixed things for SELinux policy to move it out of /var and back
into /etc.
But for unified core where we're importing the RPM, the default "/var →
tmpfiles.d" kicks in before this can run. So teach the unpacker to do it too.
This is even less nice than what we had in the postprocessing code, as there we
went to some effort to handle non-targeted policy (e.g. MLS). That said I am not
super concerned about that right now...we can always deal with MLS or other
policies later. I'd be more inclined really to try to take the issue of moving
back to /etc (or implementing /usr with /etc overrides) to SELinux upstream.
Closes: #1105
Approved by: jlebon
For unified core work, we'll be caching the "has docs" flag in the pkgcache
commit. So let's load the commit object earlier rather than having each function
load it.
Closes: #1104
Approved by: jlebon
Avoid the `goto` by initializing the output variables directly early, so we can
do a full new style consistently. Prep for unified core work.
Closes: #1104
Approved by: jlebon
Prep for unified core 🌐. First, right now `shadow-utils` always opens those with
`O_RDWR`, so let's break those links even if we don't have `usr/lib/passwd`.
Also, while not strictly requried, let's also handle the `merge_passwd_dir`
being `NULL`, as that happened when I was trying a variant of this patch.
Closes: #1098
Approved by: jlebon
Prep for unified core 🌐. Here we don't have `/usr/lib/passwd` at the start, but
we still want to load the `usr/etc` copies for processing rpmfi overrides.
Closes: #1098
Approved by: jlebon
Prep for unified core 🌐. On the treecompose path we inject
`/usr/etc/passwd`, and trying to overlay the setup package on top
with the default `UNION_IDENTICAL` fails.
This is obviously a hack; but I can't think of a way to do this significantly
better. (We could do a DB query for the owner of `/etc/passwd`, but eh.)
Closes: #1098
Approved by: jlebon
I was trying to figure out why:
rpm-ostree compose tree --repo repo/ manifest.json
would result in:
error: opendir(manifest.json): No such file or directory
It turned out to be because we had `--repo` in *both* the `install`
options and the `commit` options. This makes sense since both these
subcommands need to be given a repo. However, in the `tree` case, we
were adding both arrays, which meant we inherited two `GOptionEntry`s
for `--repo`. This confused glib2 which consumed not one but two CLI
arguments when looking for the argument associated with `--repo`.
Our CI didn't notice this because it uses the `--repo=foo` notation,
which doesn't throw off glib2.
Fix this by factoring out the `--repo` option into a separate array so
that in the `tree` case, it only gets added once. Exercise the fix in CI
by using the two argument notation for `--repo`.
Closes: #1101
Approved by: cgwalters
In git worktrees, `.git` is not a directory but a regular file
containing the path to the real git directory. This was causing us to
not use `git describe` in the versioning info, which is really useful to
sanity check that you're running the code you think you're running. Fix
this by just checking that a `.git` entry exists.
Closes: #1102
Approved by: cgwalters
The jigdo work is turning into "partial unified core 🌐" (mostly due to SELinux,
but that's an aside); we made a change here previously to avoid using
the journal if `uid != 0`, but it's more correct to check whether or
not we're already using the journal.
Concretely this fixes calling `rpmostree_context_assemble_tmprootfs()` as uid 0
inside my dev container, running `rpm-ostree compose commit2jigdo`.
Closes: #1084
Approved by: jlebon
Needed for unified core work for the treecompose side; there
`/var` may not actually be on the same mount as the repo.
Do what we do in a ton of other places (and should probably push
into ostree somehow): allocate a tmpdir in `${repo}/tmp`.
Closes: #1095
Approved by: jlebon
The maintainer can't apparently be bothered to review my patch,
and we don't need the `%post` anyways - and this is now blocking
my jigdo work.
Closes: #1092
Approved by: jlebon
We have a *lot* of experimental functionality. I think the
`override` bits are fleshed out enough now that we can lift
the `ex` designation. For example, jlebon fixed SELinux
labeling in the presence of override-replace.
Closes: #1089
Approved by: jlebon
The `ex container` path was already doing this - lower the logic
into the core so I can use it for the jigdo path. I think it's just
clearer as well even for the sysroot pkglayering path.
Closes: #1083
Approved by: jlebon
Rather than passing it to the assemble functions.
Prep for jigdo work. I'm trying to move more logic
from the system upgrader path to the core, since some of
it is needed for jigdo and "unified core".
Closes: #1083
Approved by: jlebon
