From a408267cd3fdc0d336f882e77901dbbf1205111a Mon Sep 17 00:00:00 2001
From: EunBong Song <eunb.song@samsung.com>
Date: Mon, 3 Apr 2017 11:36:38 +0900
Subject: [PATCH] fs/vfs: return ERROR when ioctl is not implemented

VFS layer should return ERROR when the underlying file system
implementation does not provide .ioctl callback.

Change-Id: If2043070f2c63b9f560856c56f89b353b343abf7
Signed-off-by: EunBong Song <eunb.song@samsung.com>
---
 os/fs/vfs/fs_ioctl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/os/fs/vfs/fs_ioctl.c b/os/fs/vfs/fs_ioctl.c
index 93597d2..5adab2f 100644
--- a/os/fs/vfs/fs_ioctl.c
+++ b/os/fs/vfs/fs_ioctl.c
@@ -152,6 +152,9 @@ int ioctl(int fd, int req, unsigned long arg)
 			err = -ret;
 			goto errout;
 		}
+	} else {
+		err = ENOTTY;
+		goto errout;
 	}
 
 	return ret;
-- 
2.7.4