From e9e26cca9c87e7ea4269247999266dc2d9de2e27 Mon Sep 17 00:00:00 2001
From: phk <phk@FreeBSD.org>
Date: Thu, 26 Sep 2002 14:10:21 +0000
Subject: Document that ENOTTY is the correct "default" error return;

---
 share/man/man9/VOP_IOCTL.9 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'share')

diff --git a/share/man/man9/VOP_IOCTL.9 b/share/man/man9/VOP_IOCTL.9
index f25787a..5265d74 100644
--- a/share/man/man9/VOP_IOCTL.9
+++ b/share/man/man9/VOP_IOCTL.9
@@ -63,13 +63,16 @@ Most filesystems do not implement this entry point.
 The file should not be locked on entry.
 .Sh RETURN VALUES
 If successful, zero is returned, otherwise an appropriate error code.
+.Pp
+If the ioctl is not recognized or not handled, ENOTTY should be returned.
 .Sh PSEUDOCODE
 .Bd -literal
 int
 vop_ioctl(struct vnode *vp, int command, caddr_t data, int fflag,
 	  struct ucred *cred, struct thread *td)
 {
-    return EOPNOTSUPP;
+
+    return ENOTTY;
 }
 .Ed
 .Sh SEE ALSO
-- 
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