containerd v2 (vendored via buildkit v0.32.0-rc1) now logs a warning
when opening a local content store on a filesystem without fsverity
support, which it probes by trying to enable verity on a temp file.
This fails on overlayfs, tmpfs, and similar filesystems common in
container and CI environments, so every imagetools oci-layout inspect
or create emitted an alarming but non-actionable warning.
Add the message to the existing logutil filter (extended to Warn level)
so it is kept out of user output, matching how other containerd/buildkit
log noise is already suppressed.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Extend the built-in policy to validate signed moby/buildkit release and
floating tags before docker-container builders are created.
Pull the image first, inspect it through Docker, and bind verification to the
descriptor digest. Resolve signature attestations through the BuildKit API
embedded in the Docker daemon.
If pulling fails, use a local image while applying the same verification when
the containerd image store exposes an immutable descriptor. Keep the classic
image-store behavior unchanged because no descriptor is available.
Allow unmanaged repositories and digest-only references unchanged. Add the
allow-untrusted-image driver option as an explicit verification bypass.
Document the behavior and add policy, digest-pinning, and local fallback
coverage.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Enable new builtins from OPA v1.14. The template_strings parser
feature was already active via ast.Features, but evaluating the
$"..." syntax also requires the internal.template_string builtin
to be present in the capabilities allowlist.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Extend testBuildPolicyCapsProxy so that instead of only checking that
the network proxy was enabled, the build runs a command that makes an
HTTP request to a local test server. The policy denies that URL as an
HTTP source, so the test now verifies that exec traffic actually flows
through the proxy and is subject to source policy, including the deny
message and DENY decision in the build output.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Evaluate source policy caps before solve requests so policies can enable
BuildKit proxy networking. Policy can return caps {"exec.proxy": true}
during the caps request to enable proxy network
support for the solve.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Keep policy resolver cleanup in a local variable so explicit error returns
cannot clear it before deferred cleanup runs. This prevents remote policy
progress writers from outliving the build printer.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Emit a final policy progress completion with the solve error even when the
inactivity window already completed the vertex.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Extends the builtin default policy to verify docker-github-builder
signatures on docker/buildkit-syft-scanner images. Tags `latest` and
1.10+ require a signature from the docker/buildkit-syft-scanner source
repository; older tags pass through unchanged. Factors the shared ref
matching logic into sig_ref_matches for dockerfile and introduces a
syft-scanner variant that uses the plain refs/tags/ prefix.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Embed an opt-in default source policy for Docker-managed frontend images.
Load it ahead of user policies when enabled, and cover behavior with table-
driven policy tests for signed, unsigned, floating, and labs tags.
Makes sure if there is any attack against the docker/dockerfile
releases, or they accidentally point to worng images, these are automatically detected.
In a future release these should become opt-out.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Ensure the negative checksum case always mutates the digest instead of
sometimes reproducing the original value when it already starts with 0.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Allow passing policy content through stdin by specifying
"--file -" in the eval command. This enables piping policy
data without requiring a file on disk.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Allow buildx policy eval to accept an explicit target platform and skip
worker platform discovery when the flag is provided.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Reuse a single ingester per target repository when imagetools create
copies multiple manifests in parallel.
This lets the pushing ingester serialize same-digest pushes and avoids
racing duplicate blob uploads against registries to work around bug in
Registry v3.0.0 (and possibly others).
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
FetchReferrers accepted FetchReferrersOpt but dropped them
when resolving OCI layout referrers. Forward the options and
apply ArtifactTypes filtering so callers can narrow results
consistently for both registry and local layout sources.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
When pushing to an OCI layout where the top-level descriptor
blob already existed, pushOCILayout returned early without
updating index.json or writing pending referrers. Restructure
the control flow so the blob-exists case skips only the write
but still updates the index and flushes referrers.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Handle OCI layout referrers via subject-annotated index entries and add
integration coverage for copying signed attestations through oci-layout.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Add oci-layout:// source and target support to imagetools create and
inspect while keeping merge, filter, and referrer logic shared.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Verify imagetools copies signatures only for attestation manifests and
does not copy image-manifest signatures or unsupported referrers.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
