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fix(gateway): detect gateway process via /proc in Docker without procps

Browse source 
Salvage of NousResearch/hermes-agent#7622.

Docker images often lack procps so `ps` is unavailable.  Try reading
/proc/*/cmdline first (works in any Linux container) and fall back to
`ps -A eww` only when /proc is not present.  PermissionError on
individual PIDs is silently skipped.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Wesley Simplicio 2026-05-09 13:17:27 -03:00 • committed by Teknium
parent 2ffef15675
commit 6bf7ac3185
2 changed files with 196 additions and 32 deletions
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90
hermes_cli/gateway.py
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@ -394,42 +394,68 @@ def _scan_gateway_pids(exclude_pids: set[int], all_profiles: bool = False) -> li
pass
current_cmd = ""
else:
result = subprocess.run(
["ps", "-A", "eww", "-o", "pid=,command="],
capture_output=True,
text=True,
timeout=10,
)
if result.returncode != 0:
return []
for line in result.stdout.split("\n"):
stripped = line.strip()
if not stripped or "grep" in stripped:
continue
# Try /proc first (works in Docker without procps installed),
# fall back to ps -A eww.
_found_via_proc = False
if os.path.isdir("/proc"):
try:
my_pid = os.getpid()
for entry in os.listdir("/proc"):
if not entry.isdigit():
continue
pid = int(entry)
if pid == my_pid or pid in exclude_pids:
continue
try:
cmdline = open(f"/proc/{pid}/cmdline", "rb").read().decode("utf-8", errors="replace")
cmdline = cmdline.replace("\x00", " ")
if any(p in cmdline for p in patterns) and (
all_profiles or _matches_current_profile(cmdline)
):
_append_unique_pid(pids, pid, exclude_pids)
except (OSError, PermissionError):
continue
_found_via_proc = True
except Exception:
pass
pid = None
command = ""
if not _found_via_proc:
result = subprocess.run(
["ps", "-A", "eww", "-o", "pid=,command="],
capture_output=True,
text=True,
timeout=10,
)
if result.returncode != 0:
return []
for line in result.stdout.split("\n"):
stripped = line.strip()
if not stripped or "grep" in stripped:
continue
parts = stripped.split(None, 1)
if len(parts) == 2:
try:
pid = int(parts[0])
command = parts[1]
except ValueError:
pid = None
pid = None
command = ""
if pid is None:
aux_parts = stripped.split()
if len(aux_parts) > 10 and aux_parts[1].isdigit():
pid = int(aux_parts[1])
command = " ".join(aux_parts[10:])
parts = stripped.split(None, 1)
if len(parts) == 2:
try:
pid = int(parts[0])
command = parts[1]
except ValueError:
pid = None
if pid is None:
continue
if any(pattern in command for pattern in patterns) and (
all_profiles or _matches_current_profile(command)
):
_append_unique_pid(pids, pid, exclude_pids)
if pid is None:
aux_parts = stripped.split()
if len(aux_parts) > 10 and aux_parts[1].isdigit():
pid = int(aux_parts[1])
command = " ".join(aux_parts[10:])
if pid is None:
continue
if any(pattern in command for pattern in patterns) and (
all_profiles or _matches_current_profile(command)
):
_append_unique_pid(pids, pid, exclude_pids)
except (OSError, subprocess.TimeoutExpired):
return []