From 75fc5c8f30b0a5dd5837df35948fc92861f30552 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 25 Aug 2021 11:29:44 +0200
Subject: use a tagged union for the fdop args

---
 src/kernel/fd.h | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'src/kernel/fd.h')

diff --git a/src/kernel/fd.h b/src/kernel/fd.h
index 90ce717..b35c979 100644
--- a/src/kernel/fd.h
+++ b/src/kernel/fd.h
@@ -22,4 +22,15 @@ enum fdop { // describes the operations which can be done on file descriptors
 	FDOP_CLOSE,
 };
 
-int fdop_dispatch(enum fdop fdop, struct fd *fd, user_ptr ptr, size_t len);
+struct fdop_args {
+	enum fdop type;
+	struct fd *fd;
+	union {
+		struct { // FDOP_READ, FDOP_WRITE
+			user_ptr ptr;
+			size_t len;
+		} rw;
+	};
+};
+
+int fdop_dispatch(struct fdop_args args);
-- 
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