initial import

1 files changed, 87 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/sigprocmask.c b/sysdeps/mach/hurd/sigprocmask.c
new file mode 100644
index 0000000000..bae3266708
--- /dev/null
+++ b/sysdeps/mach/hurd/sigprocmask.c
@@ -0,0 +1,87 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#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
+   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.  */
+int
+DEFUN(__sigprocmask, (how, set, oset),
+      int how AND CONST sigset_t *set AND sigset_t *oset)
+{
+  struct hurd_sigstate *ss;
+  sigset_t old, new;
+  sigset_t pending;
+
+  if (set != NULL)
+    new = *set;
+
+  ss = _hurd_self_sigstate ();
+
+  __spin_lock (&ss->lock);
+
+  old = ss->blocked;
+
+  if (set != NULL)
+    {
+      switch (how)
+	{
+	case SIG_BLOCK:
+	  ss->blocked |= new;
+	  break;
+
+	case SIG_UNBLOCK:
+	  ss->blocked &= ~new;
+	  break;
+
+	case SIG_SETMASK:
+	  ss->blocked = new;
+	  break;
+
+	default:
+	  __spin_unlock (&ss->lock);
+	  errno = EINVAL;
+	  return -1;
+	}
+
+      ss->blocked &= ~_SIG_CANT_MASK;
+    }
+
+  pending = ss->pending & ~ss->blocked;
+
+  __spin_unlock (&ss->lock);
+
+  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, __mach_task_self ());
+
+  return 0;
+}
+
+weak_alias (__sigprocmask, sigprocmask)