From 18d2fb228bc155fc357262ec2dc5713318bab453 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 1 Sep 2021 04:14:42 +0900
Subject: [PATCH] udev-node: stack directory must exist when adding device node
 symlink

(cherry picked from commit 46070dbf26435ba0def099121f46a6253f3f19b6)

Related: #1977994
---
 src/udev/udev-node.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
index 7cc9ee3670..4496a2bd9b 100644
--- a/src/udev/udev-node.c
+++ b/src/udev/udev-node.c
@@ -161,12 +161,13 @@ static int link_find_prioritized(sd_device *dev, bool add, const char *stackdir,
 
         dir = opendir(stackdir);
         if (!dir) {
-                if (errno == ENOENT) {
-                        *ret = TAKE_PTR(target);
-                        return !!*ret;
-                }
+                if (add) /* The stack directory must exist. */
+                        return -errno;
+                if (errno != ENOENT)
+                        return -errno;
 
-                return -errno;
+                *ret = NULL;
+                return 0;
         }
 
         r = device_get_device_id(dev, &id);