box/docs
dan-claude-bot ec5e898094 revoke/grant: survive the live-session case — the review's one real hole (#74)
Supplementary groups are read at LOGIN, so 'gpasswd -d' does nothing to a
session the user already holds — and after --purge, a stale-group process
could touch incus-user and lazily RECREATE the project with stock defaults:
the unhardened NAT bridge, un-narrowed, strictly worse than the granted
state. Adversarial review caught it; verified live, then closed:

- revoke --purge terminates the user's sessions first (loginctl, then
  pkill), and refuses to purge under processes it cannot kill
- bare revoke says out loud that held sessions keep the socket until they
  end, and names the loginctl command — instead of claiming a lockout it
  did not deliver (help/README/design doc reworded to match)
- a failed grant backs out its own group-add on exit (trap, disarmed on
  success): no half-granted user holding an un-narrowed socket while the
  admin reads the error. Verified by injecting a bad profile YAML
- the rehearsal now holds a session open across the purge and demands it
  dies with the tier (criterion l, 42nd check)

Smaller review findings, same pass: the escape-hatch probes assert the
refusal's REASON instead of any nonzero exit (an image hiccup must not read
as 'the escape is closed'); probe_from maps an outer-timeout kill to
dropped, not reachable; the rehearsal cleanup keeps the account when a purge
fails so doctor can name the leftovers; the purge asserts the trust
certificate's absence; cmd_new distinguishes a dead daemon from a missing
stack before prescribing setup-host; grant's success message names the
user-<uid> bridge variant correctly on big-uid hosts.

Rehearsal after: 42/42 (containers). test/cli.sh: 76 checks.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-18 05:11:20 +00:00
..
plans docs: the restricted tier — README, design doc, plan doc with measured results (#74) 2026-07-18 04:09:48 +00:00
box-design.md revoke/grant: survive the live-session case — the review's one real hole (#74) 2026-07-18 05:11:20 +00:00
box-recipe.md docs: extend the agent-agnostic reframe to design, recipe, and drill docs 2026-07-15 00:21:22 +00:00