Files
Seth Jennings 6461677c32 feat(policy): accept numeric UIDs for sandbox process identity (#1973)
* feat(policy): accept numeric UIDs in sandbox process identity validation

Allow run_as_user and run_as_group to be either the literal 'sandbox'
or a numeric UID/GID within [1000, 2_000_000_000]. This removes the
hard dependency on a baked-in 'sandbox' user in container images,
enabling compute drivers to inject resolved UIDs at sandbox creation.

Phase 1 of #1959.

Signed-off-by: Seth Jennings <sjenning@redhat.com>

* feat(supervisor): accept numeric UIDs for process identity dropping

Allow run_as_user and run_as_group to be numeric UIDs/GIDs, removing
the hard dependency on a baked-in 'sandbox' user in container images.

Changes:
- validate_sandbox_user(): accepts numeric UIDs without passwd lookup
  (logs OCSF event); keeps passwd check for "sandbox" name; rejects
  non-numeric non-sandbox strings that fail passwd lookup
- prepare_filesystem(): passes numeric UIDs/GIDs directly to chown()
  instead of requiring a passwd entry
- drop_privileges(): resolves numeric UIDs/GIDs directly via UID::from_raw
  / Gid::from_raw; skips initgroups when target uid matches current euid;
  uses guard conditions before setgid/setuid calls
- session_user_and_home(): falls back to ("{uid}", "/sandbox") for
  numeric UIDs, avoiding a passwd lookup that will fail

Re-exports MIN_SANDBOX_UID and MAX_SANDBOX_UID from openshell-policy
so callers have consistent range constants.

Phase 2 of #1959.

Signed-off-by: Seth Jennings <sjenning@redhat.com>

* feat(driver-kubernetes): resolve sandbox UID/GID from config or OpenShift SCC annotations

Phase 3 of the numeric-UID plan: allow operators to specify explicit
sandbox_uid/sandbox_gid in Kubernetes driver config, auto-detect from
OpenShift SCC namespace annotations, and propagate resolved values to
supervisor container env vars and PVC init container securityContext.

Changes:
- Add sandbox_uid/sandbox_gid fields to KubernetesComputeConfig
- Add SANDBOX_UID/SANDBOX_GID env var constants to openshell-core
- Implement resolve_sandbox_identity() to fetch namespace annotations
  and auto-detect OpenShift SCC UID ranges (sa.scc.uid-range)
- Pass resolved UID/GID through SandboxPodParams to pod spec builder
- Inject SANDBOX_UID/SANDBOX_GID env vars into supervisor container
- Update PVC init container securityContext with resolved UID/GID
  instead of hard-coded root
- Add comprehensive unit tests for resolution logic and annotation
  parsing (resolve_sandbox_uid, resolve_sandbox_gid, OpenShift SCC
  annotation parsing)

Signed-off-by: Seth Jennings <sjenning@redhat.com>

* feat(driver-vm): add configurable sandbox UID/GID and update docs/examples

Phase 4 of the numeric-UID plan: replace hardcoded SANDBOX_UID (10001)
in VM rootfs preparation with configurable sandbox_uid/sandbox_gid fields.

Changes:
- Add sandbox_uid/sandbox_gid to VmDriverConfig with serde derives
- Pass resolved UID/GID through prepare_sandbox_rootfs_from_image_root
  to ensure_sandbox_guest_user which writes /etc/passwd/group/gshadow
- Update BYOC Dockerfile: remove groupadd/useradd, document runtime UID
  injection and the ability to skip baked-in sandbox user
- Update gateway-config.mdx: document sandbox_uid/sandbox_gid for both
  Kubernetes (with OpenShift SCC autodetection) and VM drivers
- Update sandbox-compute-drivers.mdx: add Sandbox User Identity section
  explaining numeric UID support across all compute drivers
- Update rootfs tests to use non-default UIDs, verify config passthrough

Signed-off-by: Seth Jennings <sjenning@redhat.com>

* code review changes

* fix(supervisor): harden tests for restricted CI container environments

Guard tests against CI-specific constraints: root without CAP_SETPCAP,
UIDs with no /etc/passwd entry, and restricted /proc access.

Signed-off-by: Seth Jennings <sjennings@nvidia.com>
Signed-off-by: Seth Jennings <sjenning@redhat.com>

---------

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Signed-off-by: Seth Jennings <sjennings@nvidia.com>
2026-07-02 13:31:06 -07:00
..

openshell-core

Shared types, constants, configuration, and helpers used across OpenShell crates.

Object Metadata

Top-level user-facing objects use a Kubernetes-style metadata convention. The metadata shape provides:

  • Stable server-generated ID.
  • Human-readable name.
  • Creation timestamp.
  • Optional labels for filtering and automation.

Code that works with object metadata should use the traits in openshell_core::metadata instead of reaching into protobuf fields directly:

use openshell_core::{ObjectId, ObjectLabels, ObjectName};

let id = sandbox.object_id();
let name = sandbox.object_name();
let labels = sandbox.object_labels();

Trait methods must tolerate missing metadata and return safe empty values rather than panicking.

Label Rules

Labels follow Kubernetes-style key and value conventions:

  • Keys may include an optional DNS-prefix followed by /.
  • Names are limited to alphanumeric characters plus -, _, and ..
  • Values use the same character set and may be empty.
  • Selectors use comma-separated key=value pairs with AND semantics.

Validate labels at API ingress before persisting objects.

Inference Profiles

Provider inference profiles live in this crate so the gateway, sandbox, and router agree on provider defaults. Profiles define:

  • Auth header style.
  • Default upstream headers.
  • Client-supplied passthrough headers.
  • Supported inference protocol shapes.

Do not duplicate provider-specific inference behavior in callers. Add shared behavior here, then consume it from the gateway, sandbox, and router.