Hurd: Move <hurd/sigpreempt.h> internals into wrapper header

_hurdsig_preemptors and _hurdsig_preempted_set are not ABI symbols,
so do not declare them.  HURD_PREEMPT_SIGNAL_P is an implementation
detail, so move it as well.

Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

2 files changed, 32 insertions, 10 deletions

diff --git a/hurd/hurd/sigpreempt.h b/hurd/hurd/sigpreempt.h
index 4ab5b1369f..8cbf66a198 100644
--- a/hurd/hurd/sigpreempt.h
+++ b/hurd/hurd/sigpreempt.h
@@ -50,16 +50,6 @@ struct hurd_signal_preemptor
     struct hurd_signal_preemptor *next;	/* List structure.  */
   };
 
-#define HURD_PREEMPT_SIGNAL_P(preemptor, signo, sigcode) \
-  (((preemptor)->signals & __sigmask (signo)) \
-   && (sigcode) >= (preemptor)->first && (sigcode) <= (preemptor)->last)
-
-
-/* Signal preemptors applying to all threads; locked by _hurd_siglock.  */
-extern struct hurd_signal_preemptor *_hurdsig_preemptors;
-extern sigset_t _hurdsig_preempted_set;
-
-
 /* The caller must initialize all members of *PREEMPTOR except `next'.
    The preemptor is registered on the global list.  */
 void hurd_preempt_signals (struct hurd_signal_preemptor *preemptor);
diff --git a/sysdeps/hurd/include/hurd/sigpreempt.h b/sysdeps/hurd/include/hurd/sigpreempt.h
new file mode 100644
index 0000000000..fc0fdfd5e8
--- /dev/null
+++ b/sysdeps/hurd/include/hurd/sigpreempt.h
@@ -0,0 +1,32 @@
+/* Preemption of Hurd signals before POSIX.1 semantics take over.  Wrapper.
+   Copyright (C) 1996-2020 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/>.  */
+
+#ifndef _HURD_SIGPREEMPT_H
+# include <hurd/hurd/sigpreempt.h>
+
+# ifndef _ISOMAC
+#  define HURD_PREEMPT_SIGNAL_P(preemptor, signo, sigcode) \
+  (((preemptor)->signals & __sigmask (signo)) \
+   && (sigcode) >= (preemptor)->first && (sigcode) <= (preemptor)->last)
+
+/* Signal preemptors applying to all threads; locked by _hurd_siglock.  */
+extern struct hurd_signal_preemptor *_hurdsig_preemptors;
+extern sigset_t _hurdsig_preempted_set;
+
+# endif /* _ISOMAC */
+#endif /* _HURD_SIGPREEMPT_H */