1 files changed, 81 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/err.h b/sys/compat/linuxkpi/common/include/linux/err.h
new file mode 100644
index 000000000000..3d19949e641e
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/err.h
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 2010 Isilon Systems, Inc.
+ * Copyright (c) 2010 iX Systems, Inc.
+ * Copyright (c) 2010 Panasas, Inc.
+ * Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef	_LINUXKPI_LINUX_ERR_H_
+#define	_LINUXKPI_LINUX_ERR_H_
+
+#include <sys/types.h>
+
+#include <linux/compiler.h>
+
+#define MAX_ERRNO	4095
+
+#define IS_ERR_VALUE(x) unlikely((x) >= (uintptr_t)-MAX_ERRNO)
+
+static inline void *
+ERR_PTR(long error)
+{
+	return (void *)(intptr_t)error;
+}
+
+static inline long
+PTR_ERR(const void *ptr)
+{
+	return (intptr_t)ptr;
+}
+
+static inline bool
+IS_ERR(const void *ptr)
+{
+	return IS_ERR_VALUE((uintptr_t)ptr);
+}
+
+static inline bool
+IS_ERR_OR_NULL(const void *ptr)
+{
+	return !ptr || IS_ERR_VALUE((uintptr_t)ptr);
+}
+
+static inline void *
+ERR_CAST(const void *ptr)
+{
+	return __DECONST(void *, ptr);
+}
+
+static inline int
+PTR_ERR_OR_ZERO(const void *ptr)
+{
+	if (IS_ERR(ptr))
+		return PTR_ERR(ptr);
+	else
+		return 0;
+}
+
+#define PTR_RET(p) PTR_ERR_OR_ZERO(p)
+
+#endif	/* _LINUXKPI_LINUX_ERR_H_ */