hurd: Consolidate signal mask change

__pthread_sigstate and __sigprocmask were already the same, except for
clear_pending.

hurd/Makefile

@@ -131,6 +131,7 @@ sig = \
   longjmp-ts \
   preempt-sig \
   siginfo \
+  sigthreadmask \
   sigunwind \
   thread-cancel \
   thread-self \

sysdeps/hurd/include/hurd/signal.h

@@ -10,6 +10,10 @@ libc_hidden_proto (_hurd_self_sigstate)
 
 #ifndef _ISOMAC
 
+#include <bits/types/error_t.h>
+extern error_t __sigthreadmask (struct hurd_sigstate *ss, int how,
+				const sigset_t *set, sigset_t *oset, int clear_pending);
+
 #if defined __USE_EXTERN_INLINES
 # if IS_IN (libc) || IS_IN (libpthread)
 #  include <sigsetops.h>

sysdeps/mach/hurd/htl/pt-sigstate.c

@@ -28,58 +28,7 @@ error_t
 __pthread_sigstate (struct __pthread *thread, int how,
 		    const sigset_t *set, sigset_t *oset, int clear_pending)
 {
-  error_t err = 0;
+  return __sigthreadmask (_hurd_thread_sigstate (thread->kernel_thread),
-  struct hurd_sigstate *ss;
+			  how, set, oset, clear_pending);
-  sigset_t old, new;
-  sigset_t pending;
-
-  if (set != NULL)
-    new = *set;
-
-  ss = _hurd_thread_sigstate (thread->kernel_thread);
-  assert (ss);
-
-  _hurd_sigstate_lock (ss);
-
-  old = ss->blocked;
-
-  if (set != NULL)
-    {
-      switch (how)
-	{
-	case SIG_BLOCK:
-	  ss->blocked |= new;
-	  break;
-
-	case SIG_SETMASK:
-	  ss->blocked = new;
-	  break;
-
-	case SIG_UNBLOCK:
-	  ss->blocked &= ~new;
-	  break;
-
-	default:
-	  err = EINVAL;
-	  break;
-	}
-      ss->blocked &= ~_SIG_CANT_MASK;
-    }
-
-  if (!err && clear_pending)
-    __sigemptyset (&ss->pending);
-
-  pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
-  _hurd_sigstate_unlock (ss);
-
-  if (!err && oset != NULL)
-    *oset = old;
-
-  if (!err && pending)
-    /* Send a message to the signal thread so it
-       will wake up and check for pending signals.  */
-    __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
-
-  return err;
 }
 libc_hidden_def (__pthread_sigstate)

sysdeps/mach/hurd/sigprocmask.c

@@ -27,56 +27,7 @@
 int
 __sigprocmask (int how, const sigset_t *set, sigset_t *oset)
 {
-  struct hurd_sigstate *ss;
+  return __hurd_fail (__sigthreadmask (_hurd_self_sigstate (), how, set, oset, 0));
-  sigset_t old, new;
-  sigset_t pending;
-
-  if (set != NULL)
-    new = *set;
-
-  ss = _hurd_self_sigstate ();
-
-  _hurd_sigstate_lock (ss);
-
-  old = ss->blocked;
-
-  if (set != NULL)
-    {
-      switch (how)
-	{
-	case SIG_BLOCK:
-	  __sigorset (&ss->blocked, &ss->blocked, &new);
-	  break;
-
-	case SIG_UNBLOCK:
-	  ss->blocked &= ~new;
-	  break;
-
-	case SIG_SETMASK:
-	  ss->blocked = new;
-	  break;
-
-	default:
-	  _hurd_sigstate_unlock (ss);
-	  return __hurd_fail (EINVAL);
-	}
-
-      ss->blocked &= ~_SIG_CANT_MASK;
-    }
-
-  pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
-
-  _hurd_sigstate_unlock (ss);
-
-  if (oset != NULL)
-    *oset = old;
-
-  if (pending)
-    /* Send a message to the signal thread so it
-       will wake up and check for pending signals.  */
-    __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
-
-  return 0;
 }
 
 libc_hidden_def (__sigprocmask)

sysdeps/mach/hurd/sigthreadmask.c

@@ -0,0 +1,84 @@
+/* Copyright (C) 1991-2025 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <hurd.h>
+#include <hurd/signal.h>
+#include <hurd/msg.h>
+
+/* If SET is not NULL, modify the current set of blocked signals in SS
+   according to HOW, which may be SIG_BLOCK, SIG_UNBLOCK or SIG_SETMASK.
+   If OSET is not NULL, store the old set of blocked signals in *OSET.
+   If CLEAR_PENDING is non-zero, the pending set is cleared.  */
+error_t
+__sigthreadmask (struct hurd_sigstate *ss, int how,
+	   const sigset_t *set, sigset_t *oset, int clear_pending)
+{
+  sigset_t old, new;
+  sigset_t pending;
+
+  if (set != NULL)
+    new = *set;
+
+  assert (ss);
+
+  _hurd_sigstate_lock (ss);
+
+  old = ss->blocked;
+
+  if (set != NULL)
+    {
+      switch (how)
+	{
+	case SIG_BLOCK:
+	  __sigorset (&ss->blocked, &ss->blocked, &new);
+	  break;
+
+	case SIG_UNBLOCK:
+	  ss->blocked &= ~new;
+	  break;
+
+	case SIG_SETMASK:
+	  ss->blocked = new;
+	  break;
+
+	default:
+	  _hurd_sigstate_unlock (ss);
+	  return EINVAL;
+	}
+
+      ss->blocked &= ~_SIG_CANT_MASK;
+    }
+
+  if (clear_pending)
+    __sigemptyset (&ss->pending);
+
+  pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
+
+  _hurd_sigstate_unlock (ss);
+
+  if (oset != NULL)
+    *oset = old;
+
+  if (pending)
+    /* Send a message to the signal thread so it
+       will wake up and check for pending signals.  */
+    __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
+
+  return 0;
+}