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Add new "static-delta verify" sub-command.
This supports multiple keys to verify the static-delta file.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
This retrieves the signatures and pass the static delta block as an array
of bytes to ostree_sign_data_verify().
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
While the commits contained in the single static-delta file are signed so
we can check them and operate on trusted data, the superblock isn't signed
in any way, so it end up operating on untrusted data to:
1. actually find where the trusted data is, and
2. check whether the update is fit for the current device by looking at
the collection id stored in the metadata
This commit generates signatures of all static data, and concatenate them
to the existing static delta format, i.e. as a GVariant layout `a{sv}ay`
where
- a{sv}: signatures
- ay: existing delta variant
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
This was only used in one place, and (especially with the simplification
with GMainContextPopDefault) and the one caller doesn't really do
much more than call the helper. Additionally, what little it does (saving
the result in the cache) is inherently tied to how the helper work,
and will become even more so when we support summary indexes.
This is a preparatory cleanup for supporting summary indexes. It
doesn't change any behaviour and passes make check on its own.
This loads and makes a digest for a delta superblock. The previous
code was used when generating the deltas section in the summary
file. This changes nothing, but is in preparation for using similar
formats in a separate delta index file.
The change in cbf1aca1d5 actually
only mmaps the signature file, not the summary. This change makes
use mmap both, as well as extract the cache loading into a helper
function that we will later use in more places.
ostree_repo_list_static_delta_names() tried to validate that
any second-level directory element was a directory, but there was
a cut-and-paste issue, and it used `dent->d_type` instead
of `sub_dent->d_type`.
This fixes the code, but all old ostree versions will break if
there are non-directories in a subdirectory of the deltas directory
in the repo, so be wary.
Looking at
https://github.com/coreos/coreos-assembler/issues/1703
a user is getting a bare:
`error: fsetxattr: Permission denied`
I don't think it's these code paths since a deploy
isn't happening but on inspection I noticed we didn't
have error prefixing here.
That test will not make it into the fedora-coreos-config repo until the
libostree fix gets percolated down. PR is:
https://github.com/coreos/fedora-coreos-config/pull/586
But we want to make sure that the fix does work and that we don't
regress on it. So manually fetch it for now.
When we remount `/sysroot` as read-only, we also make `/etc` read-only.
This is usually OK because we then remount `/var` read-write, which also
flips `/etc` back to read-write... unless `/var` is a separate
filesystem and not a bind-mount to the stateroot `/var`.
Fix this by just remounting `/etc` read-write in the read-only sysroot
case.
Eventually, I think we should rework this to set everything up the way
we want from the initramfs (#2115). This would also eliminate the window
during which `/etc` is read-only while `ostree-remount` runs.
We were bind-mounting the initramfs' `/etc` (to itself) instead of the
target deployment `/etc` (to itself). Since we're already `chdir`'ed
into it, we can just drop the leading slash.
And I made a few more API tweaks, such as supporting `Path`
objects directly and also not needing e.g. `commit = commit`, see
- cfa7c71126
- 679bce4cc7
