1 files changed, 29 insertions, 0 deletions
diff --git a/libhw_generic/include/libhw/generic/io.h b/libhw_generic/include/libhw/generic/io.h
new file mode 100644
index 0000000..681c5ef
--- /dev/null
+++ b/libhw_generic/include/libhw/generic/io.h
@@ -0,0 +1,29 @@
+/* libhw/generic/io.h - Device-independent I/O definitions
+ *
+ * Copyright (C) 2024-2025  Luke T. Shumaker <lukeshu@lukeshu.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+#ifndef _LIBHW_GENERIC_IO_H_
+#define _LIBHW_GENERIC_IO_H_
+
+#include <stddef.h>    /* for size_t */
+
+/* structs ********************************************************************/
+
+#if __unix__
+#include <sys/uio.h>
+#else
+struct iovec {
+	void    *iov_base;
+	size_t   iov_len;
+};
+#endif
+
+struct duplex_iovec {
+	void    *iov_read_dst;
+	void    *iov_write_src;
+	size_t   iov_len;
+};
+
+#endif /* _LIBHW_GENERIC_IO_H_ */