1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/htl/pt-sigstate-init.c b/sysdeps/mach/hurd/htl/pt-sigstate-init.c
new file mode 100644
index 0000000000..70832f9576
--- /dev/null
+++ b/sysdeps/mach/hurd/htl/pt-sigstate-init.c
@@ -0,0 +1,44 @@
+/* Initialize the signal state.  Hurd on Mach version.
+   Copyright (C) 2002-2018 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+#include <hurd/signal.h>
+
+error_t
+__pthread_sigstate_init (struct __pthread *thread)
+{
+  static int do_init_global;
+
+  /* Mark the thread as a global signal receiver so as to conform with
+     the pthread semantics.  However, we must be careful.  The first
+     pthread created is the main thread, during libpthread initialization.
+     We must not mark it, otherwise the sigprocmask call in
+     __pthread_create would try to access _hurd_global_sigstate,
+     which is not initialized yet.  When glibc runs _hurdsig_init later
+     on, the message thread is created, which must not be marked either.  */
+  if (do_init_global)
+    {
+      struct hurd_sigstate *ss = _hurd_thread_sigstate (thread->kernel_thread);
+      (void) ss;
+    }
+  else if (__pthread_num_threads >= 2)
+    do_init_global = 1;
+
+  return 0;
+}