From a782b86c7556a17b39c4a43914f4f910474ce668 Mon Sep 17 00:00:00 2001
From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Apr 07 2021 22:35:26 +0000
Subject: resolved: create /etc/resolv.conf symlink at runtime


If the symlink doesn't exists, and we are being started, let's
create it to provie name resolution.

If it exists, do nothing. In particular, if it is a broken symlink,
we cannot really know if the administator configured it to point to
a location used by some service that hasn't started yet, so we
don't touch it in that case either.

https://bugzilla.redhat.com/show_bug.cgi?id=1313085

patch_name: 0029-resolved-create-etc-resolv.conf-symlink-at-runtime.patch
present_in_specfile: true
location_in_specfile: 29
squash_commits: true

---

diff --git a/src/resolve/resolved.c b/src/resolve/resolved.c
index c01e53e..f3d96df 100644
--- a/src/resolve/resolved.c
+++ b/src/resolve/resolved.c
@@ -53,6 +53,10 @@ int main(int argc, char *argv[]) {
         /* Drop privileges, but only if we have been started as root. If we are not running as root we assume all
          * privileges are already dropped. */
         if (getuid() == 0) {
+                r = symlink("../run/systemd/resolve/resolv.conf", "/etc/resolv.conf");
+                if (r < 0 && errno != EEXIST)
+                        log_warning_errno(errno,
+                                          "Could not create /etc/resolv.conf symlink: %m");
 
                 /* Drop privileges, but keep three caps. Note that we drop those too, later on (see below) */
                 r = drop_privileges(uid, gid,
diff --git a/tmpfiles.d/etc.conf.m4 b/tmpfiles.d/etc.conf.m4
index df8d421..928105e 100644
--- a/tmpfiles.d/etc.conf.m4
+++ b/tmpfiles.d/etc.conf.m4
@@ -13,9 +13,6 @@ L+ /etc/mtab - - - - ../proc/self/mounts
 m4_ifdef(`HAVE_SMACK_RUN_LABEL',
 t /etc/mtab - - - - security.SMACK64=_
 )m4_dnl
-m4_ifdef(`ENABLE_RESOLVE',
-L! /etc/resolv.conf - - - - ../run/systemd/resolve/stub-resolv.conf
-)m4_dnl
 C /etc/nsswitch.conf - - - -
 m4_ifdef(`HAVE_PAM',
 C /etc/pam.d - - - -