1 files changed, 55 insertions, 0 deletions
diff --git a/include/spl/sys/signal.h b/include/spl/sys/signal.h
new file mode 100644
index 000000000..36b8b5d98
--- /dev/null
+++ b/include/spl/sys/signal.h
@@ -0,0 +1,55 @@
+/*
+ *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+ *  Copyright (C) 2007 The Regents of the University of California.
+ *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ *  Written by Brian Behlendorf <[email protected]>.
+ *  UCRL-CODE-235197
+ *
+ *  This file is part of the SPL, Solaris Porting Layer.
+ *  For details, see <http://zfsonlinux.org/>.
+ *
+ *  The SPL is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ *  The SPL 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 General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SPL_SIGNAL_H
+#define	_SPL_SIGNAL_H
+
+#include <linux/sched.h>
+
+#ifdef HAVE_SCHED_SIGNAL_HEADER
+#include <linux/sched/signal.h>
+#endif
+
+#define	FORREAL		0	/* Usual side-effects */
+#define	JUSTLOOKING	1	/* Don't stop the process */
+
+/*
+ * The "why" argument indicates the allowable side-effects of the call:
+ *
+ * FORREAL:  Extract the next pending signal from p_sig into p_cursig;
+ * stop the process if a stop has been requested or if a traced signal
+ * is pending.
+ *
+ * JUSTLOOKING:  Don't stop the process, just indicate whether or not
+ * a signal might be pending (FORREAL is needed to tell for sure).
+ */
+static __inline__ int
+issig(int why)
+{
+	ASSERT(why == FORREAL || why == JUSTLOOKING);
+
+	return (signal_pending(current));
+}
+
+#endif /* SPL_SIGNAL_H */