From c38c45304b7887d4fb29ed7484cb2a3c9f3d6bb4 Mon Sep 17 00:00:00 2001
From: Joakim Sindholt <opensource@zhasha.com>
Date: Mon, 18 Mar 2024 12:22:33 +0100
Subject: [PATCH] fs/9p: translate O_TRUNC into OTRUNC

[ Upstream commit 87de39e70503e04ddb58965520b15eb9efa7eef3 ]

This one hits both 9P2000 and .u as it appears v9fs has never translated
the O_TRUNC flag.

Signed-off-by: Joakim Sindholt <opensource@zhasha.com>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/9p/vfs_inode.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 88ca5015f987..4ffb0750c79b 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -177,6 +177,9 @@ int v9fs_uflags2omode(int uflags, int extended)
 		break;
 	}
 
+	if (uflags & O_TRUNC)
+		ret |= P9_OTRUNC;
+
 	if (extended) {
 		if (uflags & O_EXCL)
 			ret |= P9_OEXCL;