Move files to libpthread/ for inclusion along hurd

1 files changed, 81 insertions, 0 deletions

diff --git a/libpthread/sysdeps/l4/hurd/pt-sigstate.c b/libpthread/sysdeps/l4/hurd/pt-sigstate.c
new file mode 100644
index 00000000..66dd08cf
--- /dev/null
+++ b/libpthread/sysdeps/l4/hurd/pt-sigstate.c
@@ -0,0 +1,81 @@
+/* Set a thread's signal state.  Hurd on L4 version.
+   Copyright (C) 2002, 2005, 2008 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+#include <signal.h>
+
+#include <pt-internal.h>
+
+error_t
+__pthread_sigstate (struct __pthread *thread, int how,
+		    const sigset_t *set, sigset_t *oset,
+		    int clear_pending)
+{
+  struct signal_state *ss = &thread->ss;
+  pthread_mutex_lock (&ss->lock);
+
+  if (oset)
+    *oset = ss->blocked;
+
+  if (set)
+    {
+      /* Mask out SIGKILL and SIGSTOP.  */
+      sigset_t s = *set;
+      sigdelset (&s, SIGKILL);
+      sigdelset (&s, SIGSTOP);
+
+      switch (how)
+	{
+	case SIG_BLOCK:
+	  ss->blocked |= s;
+	  break;
+	case SIG_UNBLOCK:
+	  ss->blocked &= ~s;
+	  break;
+	case SIG_SETMASK:
+	  ss->blocked = s;
+	  break;
+	default:
+	  errno = EINVAL;
+	  pthread_mutex_unlock (&ss->lock);
+	  return -1;
+	}
+    }
+
+  if (clear_pending)
+    sigemptyset (&ss->pending);
+
+  /* A "signal shall remain pending until it is unblocked" (2.4.1).
+
+     "If there are any pending unblocked signals after the call to
+     sigprocmask(), at least one of those signals shall be delivered
+     before the call to sigprocmask() returns."
+     (pthread_sigmask).  */
+  sigset_t extant = ~ss->blocked & ss->pending;
+  if (! extant)
+    extant = ~ss->blocked & process_pending;
+
+  pthread_mutex_unlock (&ss->lock);
+
+  if (extant)
+    raise (l4_lsb64 (extant));
+
+  return 0;
+}