Files
orca/src
Brennan Benson 73ead3c43e fix(daemon): retire macOS daemons whose login session died (#7936)
A daemon that survives a full macOS logout is unsalvageable: its PAM
context can no longer host login(1) spawns (every new PTY becomes a
'Login incorrect' prompt zombie) and its Mach bootstrap namespace has
lost the system DNS resolver, so terminals it hosts have no egress.
Today it also keeps the #9301 preflight's cached 'accepted' verdict, so
it keeps wrapping spawns in login(1) forever; only a manual daemon
restart recovers.

GUI-spawned daemons now watch for login-session death from the inside:
a fresh cache-bypassing PAM probe (triggered by PTY-exit bursts, fresh
client hellos, and a slow periodic timer) must conclusively reject
three consecutive times AND the in-process system resolver must be
degraded; then the daemon exits crash-style so session meta stays
unclean and the replacement daemon cold-restores scrollback. A
conclusive rejection also flips the spawn-wrapper cache off
immediately.

Headless serve/SSH daemons never get the watch (they must survive their
spawning session ending), and a session that never conclusively
accepted login(1) never arms it — a PAM anomaly alone can't kill a
healthy daemon (fast user switching keeps accepting, so switched-away
sessions are preserved).
2026-07-21 18:30:29 -07:00
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