Finally decided to put the often copied RETURN_AND_SET_ERRNO() macro

into a header. This version instantiates the given argument only once.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24900 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/shared/syscall_utils.h

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2008, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _SYSCALL_UTILS_H
+#define _SYSCALL_UTILS_H
+
+#define RETURN_AND_SET_ERRNO(err)			\
+	do {									\
+		__typeof(err) raseResult = (err);	\
+		if (raseResult < 0) {				\
+			errno = raseResult;				\
+			return -1;						\
+		}									\
+		return raseResult;					\
+	} while (false)
+
+#endif	// _SYSCALL_UTILS_H