From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 14 Dec 2020 03:37:23 +0000 (+0900)
Subject: core/namespace: ignore ENOENT for /proc/sys/kernel/domainname and hostname
X-Git-Tag: v248-rc1~519
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0ebc9f23faf5586f8a9250c3be08773eb3f8d2da;p=thirdparty%2Fsystemd.git

core/namespace: ignore ENOENT for /proc/sys/kernel/domainname and hostname

If they do not exist, hostname or domainname cannot be modified. So, it is ok.

Fixes #17866, especially https://github.com/systemd/systemd/issues/17866#issuecomment-744118614.
---

diff --git a/src/core/namespace.c b/src/core/namespace.c
index cdf427a6ea9..4d4cd4985c0 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -1684,10 +1684,12 @@ int setup_namespace(
                         *(m++) = (MountEntry) {
                                 .path_const = "/proc/sys/kernel/hostname",
                                 .mode = READONLY,
+                                .ignore = true,
                         };
                         *(m++) = (MountEntry) {
                                 .path_const = "/proc/sys/kernel/domainname",
                                 .mode = READONLY,
+                                .ignore = true,
                         };
                 }