1 files changed, 20 insertions, 0 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 13a50a32652d..afe232b9df6e 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -393,6 +393,26 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
 };
 #endif
 
+static const char *proc_follow_link(struct dentry *dentry, void **cookie)
+{
+	struct proc_dir_entry *pde = PDE(d_inode(dentry));
+	if (unlikely(!use_pde(pde)))
+		return ERR_PTR(-EINVAL);
+	*cookie = pde;
+	return pde->data;
+}
+
+static void proc_put_link(struct inode *unused, void *p)
+{
+	unuse_pde(p);
+}
+
+const struct inode_operations proc_link_inode_operations = {
+	.readlink	= generic_readlink,
+	.follow_link	= proc_follow_link,
+	.put_link	= proc_put_link,
+};
+
 struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
 {
 	struct inode *inode = new_inode_pseudo(sb);