Bench pass on fapolicyd-tmpfs-12043d3 / comet-beacon-54: permissive=0, watch_fs has
overlay, / and /tmp both overlayfs; novel-hash /tmp binary DENIED (FANOTIFY resp=2,
obj_trust=0, exit=126); empty deny sweep = zero false denials (kiosk/weston/chromium/
NM-dispatcher all trusted, admin SSH+sudo work under staff_t). The exec guard went
from effectively OFF to enforcing on the whole overlay root, nothing legit broken.
Also records the scope caveat: integrity=none path-trust closes the UNTRUSTED-PATH
half (proven) but not the MODIFIED-TRUSTED-PATH half — an overlayfs copy-up of a
trusted path (e.g. /usr/bin/bash) lands a same-path tmpfs copy outside dm-verity that
path-trust still trusts. Closing it needs integrity=sha256 or an un-shadowable /usr
(TODO #15, preferred).
Audiobuzz
e27f068aaf