From 56c94c626785001dbb683312725b7d87c6ec6a91 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@redhat.com>
Date: Wed, 25 Oct 2023 16:02:01 +0200
Subject: namespace: extract show_path() helper

To be used by the statmount(2) syscall as well.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Link: https://lore.kernel.org/r/20231025140205.3586473-4-mszeredi@redhat.com
Reviewed-by: Ian Kent <raven@themaw.net>
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 fs/namespace.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'fs/namespace.c')

diff --git a/fs/namespace.c b/fs/namespace.c
index bbe94096e262..d3665d025acb 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -4674,6 +4674,15 @@ SYSCALL_DEFINE5(mount_setattr, int, dfd, const char __user *, path,
 	return err;
 }
 
+int show_path(struct seq_file *m, struct dentry *root)
+{
+	if (root->d_sb->s_op->show_path)
+		return root->d_sb->s_op->show_path(m, root);
+
+	seq_dentry(m, root, " \t\n\\");
+	return 0;
+}
+
 static void __init init_mount_tree(void)
 {
 	struct vfsmount *mnt;
-- 
cgit