From a00bc93fe1b6f71afffa43fab4efb88dceddea62 Mon Sep 17 00:00:00 2001
From: ed <s@ocv.me>
Date: Fri, 12 Jun 2026 23:37:12 +0000
Subject: [PATCH] bsd: signal masking

---
 copyparty/svchub.py |  3 +++
 copyparty/util.py   | 19 +++++++++++--------
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/copyparty/svchub.py b/copyparty/svchub.py
index b0b1f9ef..c35a0566 100644
--- a/copyparty/svchub.py
+++ b/copyparty/svchub.py
@@ -51,6 +51,7 @@ from .th_srv import (
 )
 from .up2k import Up2k
 from .util import (
+    BLOCK_SIGS,
     DEF_EXP,
     DEF_MTE,
     DEF_MTH,
@@ -1486,6 +1487,8 @@ class SvcHub(object):
 
         for sig in sigs:
             signal.signal(sig, self.signal_handler)
+            if sig not in BLOCK_SIGS and BLOCK_SIGS:
+                BLOCK_SIGS.append(sig)
 
         if self.args.sig_thr:
             Daemon(self._signal_thr, "svchub-sig")
diff --git a/copyparty/util.py b/copyparty/util.py
index 6396445f..9da36b8e 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -326,7 +326,14 @@ except:
     BITNESS = struct.calcsize("P") * 8
 
 
-CAN_SIGMASK = not (ANYWIN or PY2 or GRAAL)
+try:
+    if ANYWIN or PY2 or GRAAL or not hasattr(signal, "pthread_sigmask"):
+        raise Exception()
+    BLOCK_SIGS = [signal.SIGINT, signal.SIGTERM, signal.SIGHUP, signal.SIGUSR1]
+    CAN_SIGMASK = True
+except:
+    BLOCK_SIGS = []
+    CAN_SIGMASK = False
 
 
 RE_ANSI = re.compile("\033\\[[^mK]*[mK]")
@@ -832,10 +839,8 @@ class Daemon(threading.Thread):
             self.start()
 
     def run(self):
-        if CAN_SIGMASK:
-            signal.pthread_sigmask(
-                signal.SIG_BLOCK, [signal.SIGINT, signal.SIGTERM, signal.SIGUSR1]
-            )
+        if BLOCK_SIGS:
+            signal.pthread_sigmask(signal.SIG_BLOCK, BLOCK_SIGS)
 
         self.fun(*self.a, **self.ka)
 
@@ -1778,9 +1783,7 @@ def log_thrs(log: Callable[[str, str, int], None], ival: float, name: str) -> No
 
 
 def _sigblock():
-    signal.pthread_sigmask(
-        signal.SIG_BLOCK, [signal.SIGINT, signal.SIGTERM, signal.SIGUSR1]
-    )
+    signal.pthread_sigmask(signal.SIG_BLOCK, BLOCK_SIGS)
 
 
 sigblock = _sigblock if CAN_SIGMASK else noop