1 files changed, 8 insertions, 0 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 541fd805fb88..0ad65a932936 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1690,6 +1690,14 @@ static inline void rcu_copy_process(struct task_struct *p)
 #endif /* #ifdef CONFIG_TASKS_RCU */
 }
 
+struct pid *pidfd_pid(const struct file *file)
+{
+        if (file->f_op == &pidfd_fops)
+                return file->private_data;
+
+        return ERR_PTR(-EBADF);
+}
+
 static int pidfd_release(struct inode *inode, struct file *file)
 {
         struct pid *pid = file->private_data;