Imported Upstream version 0.50upstream/0.50

1 files changed, 48 insertions, 0 deletions

diff --git a/lib/sigprocmask.c b/lib/sigprocmask.c
new file mode 100644
index 0000000..263c281
--- /dev/null
+++ b/lib/sigprocmask.c
@@ -0,0 +1,48 @@
+/* Copyright (C) 1997 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 <config.h>
+
+#include <errno.h>
+
+#ifndef HAVE_SIGPROCMASK
+
+#define sigprocmask	SOMETHINGELSE
+#include <signal.h>
+#undef  sigprocmask
+
+int
+sigprocmask (int how, int *new, int *old)
+{
+  int o, n = *new;
+
+  switch (how)
+    {
+    case 1: o = sigblock (n); break;
+    case 2: o = sigsetmask (sigblock (0) & ~n); break;
+    case 3: o = sigsetmask (n); break;
+    default:
+      errno = EINVAL;
+      return -1;
+    }
+  if (old)
+    *old = o;
+  return 0;
+}
+
+#endif /* !HAVE_SIGPROCMASK */