linux-kernel - [PATCH 2/4] kernfs: restrict to local file handles

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Message-ID: <20241201-work-exportfs-v1-2-b850dda4502a@kernel.org>
Date: Sun,  1 Dec 2024 14:12:26 +0100
From: Christian Brauner <brauner@...nel.org>
To: Amir Goldstein <amir73il@...il.com>,
	Jeff Layton <jlayton@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>,
	Erin Shepherd <erin.shepherd@....eu>,
	Chuck Lever <chuck.lever@...cle.com>,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-nfs@...r.kernel.org,
	stable <stable@...nel.org>
Subject: [PATCH 2/4] kernfs: restrict to local file handles

The kernfs filesystem uses local file handles that cannot be
exported. Mark its export operations accordingly.

Fixes: aa8188253474 ("kernfs: add exportfs operations")
Cc: stable <stable@...nel.org> # >= 4.14
Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 fs/kernfs/mount.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 1358c21837f1a0fe1b109e39134e993d0ef83879..c6266ecc78a3ca767e3dcab24fde7c2b79f5370d 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -154,6 +154,7 @@ static const struct export_operations kernfs_export_ops = {
 	.fh_to_dentry	= kernfs_fh_to_dentry,
 	.fh_to_parent	= kernfs_fh_to_parent,
 	.get_parent	= kernfs_get_parent_dentry,
+	.flags		= EXPORT_OP_LOCAL_FILE_HANDLE,
 };
 
 /**

-- 
2.45.2