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hermes-agent/tests/tools
Dimar Anez 9eb13d07b6 fix(terminal): tolerate macOS TCC PermissionError in _safe_getcwd
On macOS with TCC (Transparency, Consent, and Control), os.getcwd()
raises PermissionError: [Errno 1] Operation not permitted — not
FileNotFoundError — when the process CWD is under a protected location
(~/Documents, ~/Desktop, ~/Downloads) and the calling process lacks
Full Disk Access.

_safe_getcwd() only caught FileNotFoundError (deleted CWD), so the
terminal-tool cleanup thread, which calls _get_env_config() →
_safe_getcwd() every 60 s, logged a full stack trace on every tick.
This accumulated hundreds of MB of noise in mcp-stderr.log (observed
184 MB on a single-day session) without breaking functionality — the
cleanup thread's outer try/except swallowed the exception, but
exc_info=True kept emitting the traceback.

Fix: add PermissionError to the existing except clause so the fallback
chain (TERMINAL_CWD → $HOME) runs, matching the existing pattern for
deleted-CWD recovery (#17558). Complements #66306, which handles
PermissionError from subprocess.Popen(cwd=...) for an inaccessible
configured cwd on Linux; this handles the distinct case where the
live process CWD itself is TCC-blocked.

Tests cover: PermissionError fallback to $HOME, TERMINAL_CWD priority,
FileNotFoundError regression, happy path unchanged, and unrelated
OSError (NotADirectoryError) still propagating instead of being
swallowed.
2026-08-26 04:51:41 -07:00
..
2026-08-18 20:03:18 -07:00