1 files changed, 42 insertions, 0 deletions
diff --git a/utils.h b/utils.h
new file mode 100644
index 0000000..0931e82
--- /dev/null
+++ b/utils.h
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AVIRT - ALSA Virtual Soundcard
+ *
+ * Copyright (c) 2010-2018 Fiberdyne Systems Pty Ltd
+ * 
+ * utils.h - Some useful macros/utils for AVIRT
+ */
+
+#ifndef __SOUND_AVIRT_UTILS_H
+#define __SOUND_AVIRT_UTILS_H
+
+#define CHK_ERR(errno)                                                         \
+	do {                                                                   \
+		if ((errno) < 0)                                               \
+			return (errno);                                        \
+	} while (0)
+
+#define CHK_ERR_V(errno, fmt, args...)                                         \
+	do {                                                                   \
+		if ((errno) < 0) {                                             \
+			DERROR(D_LOGNAME, (fmt), ##args)                       \
+			return (errno);                                        \
+		}                                                              \
+	} while (0)
+
+#define CHK_NULL(x)                                                            \
+	do {                                                                   \
+		if (!(x))                                                      \
+			return -EFAULT;                                        \
+	} while (0)
+
+#define CHK_NULL_V(x, fmt, args...)                                            \
+	do {                                                                   \
+		if (!(x)) {                                                    \
+			DERROR(D_LOGNAME, "[ERRNO: %d] " fmt, -EFAULT,         \
+			       ##args);                                        \
+			return -EFAULT;                                        \
+		}                                                              \
+	} while (0)
+
+#endif /* __SOUND_AVIRT_UTILS_H */