[RFC PATCH 4/4] fuse: define the filesystem as untrusted

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Files on FUSE can change at any point in time without notifying the
kernel.  This patch sets the new fs_type flag FS_UNTRUSTED to indicate
that the filesystem is untrusted.

(This patch is based on Alban Crequy's use of fs_flags.)

Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
Cc: Seth Forshee <seth.forshee@xxxxxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Dongsu Park <dongsu@xxxxxxxxxx>
Cc: Alban Crequy <alban@xxxxxxxxxx>
Cc: "Serge E. Hallyn" <serge@xxxxxxxxxx>
---
 fs/fuse/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 624f18bbfd2b..dad65a3c7388 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1205,7 +1205,7 @@ static void fuse_kill_sb_anon(struct super_block *sb)
 static struct file_system_type fuse_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "fuse",
-	.fs_flags	= FS_HAS_SUBTYPE,
+	.fs_flags	= FS_HAS_SUBTYPE | FS_UNTRUSTED,
 	.mount		= fuse_mount,
 	.kill_sb	= fuse_kill_sb_anon,
 };
-- 
2.7.5




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