From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 31 Aug 2021 19:14:42 +0000 (+0900)
Subject: udev-node: stack directory must exist when adding device node symlink
X-Git-Tag: archive/raspbian/249.5-1+rpi1^2~29
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=4d91c9f2594c8e7a4585bec1981fd1d422d08f88;p=systemd.git

udev-node: stack directory must exist when adding device node symlink

(cherry picked from commit 46070dbf26435ba0def099121f46a6253f3f19b6)

Gbp-Pq: Name udev-node-stack-directory-must-exist-when-adding-device-n.patch
---

diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
index 7cc9ee36..4496a2bd 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);