Merge b8675eef92 into 49fd31df58

In case target file would be missing as well, symlinking to it won't
help. Just log it and finish.

src/resolve/resolved-resolv-conf.c

@@ -323,6 +323,25 @@ static int write_stub_resolv_conf_contents(FILE *f, OrderedSet *dns, OrderedSet
         return fflush_and_check(f);
 }
 
+void manager_symlink_stub_to_uplink_resolv_conf(void) {
+        _cleanup_free_ char *fname = NULL;
+        int r;
+        if (access(PRIVATE_UPLINK_RESOLV_CONF, R_OK) != 0) {
+                log_debug("Uplink %s is missing.", PRIVATE_UPLINK_RESOLV_CONF);
+                return;
+        }
+
+        r = path_extract_filename(PRIVATE_UPLINK_RESOLV_CONF, &fname);
+        if (r < 0) {
+                log_warning_errno(r, "Failed to extract filename from path '" PRIVATE_UPLINK_RESOLV_CONF "', ignoring: %m");
+                return;
+        }
+
+        r = symlink_atomic_label(fname, PRIVATE_STUB_RESOLV_CONF);
+        if (r < 0)
+                log_warning_errno(r, "Failed to symlink %s, ignoring: %m", PRIVATE_STUB_RESOLV_CONF);
+}
+
 int manager_write_resolv_conf(Manager *m) {
         _cleanup_ordered_set_free_ OrderedSet *dns = NULL, *domains = NULL;
         _cleanup_(unlink_and_freep) char *temp_path_uplink = NULL, *temp_path_stub = NULL;
@@ -369,16 +388,9 @@ int manager_write_resolv_conf(Manager *m) {
                         log_warning_errno(r, "Failed to move new %s into place, ignoring: %m", PRIVATE_STUB_RESOLV_CONF);
 
                 temp_path_stub = mfree(temp_path_stub); /* free the string explicitly, so that we don't unlink anymore */
-        } else {
-                _cleanup_free_ char *fname = NULL;
-                r = path_extract_filename(PRIVATE_UPLINK_RESOLV_CONF, &fname);
-                if (r < 0)
-                        return log_warning_errno(r, "Failed to extract filename from path '" PRIVATE_UPLINK_RESOLV_CONF "', ignoring: %m");
+        } else
+                manager_symlink_stub_to_uplink_resolv_conf();
 
-                r = symlink_atomic_label(fname, PRIVATE_STUB_RESOLV_CONF);
-                if (r < 0)
-                        log_warning_errno(r, "Failed to symlink %s, ignoring: %m", PRIVATE_STUB_RESOLV_CONF);
-        }
 
         r = conservative_rename(temp_path_uplink, PRIVATE_UPLINK_RESOLV_CONF);
         if (r < 0)

src/resolve/resolved-resolv-conf.h

@@ -6,6 +6,7 @@
 int manager_check_resolv_conf(const Manager *m);
 int manager_read_resolv_conf(Manager *m);
 int manager_write_resolv_conf(Manager *m);
+void manager_symlink_stub_to_uplink_resolv_conf(void);
 
 typedef enum ResolvConfMode {
         RESOLV_CONF_UPLINK,

src/resolve/resolved.c

@@ -91,6 +91,9 @@ static int run(int argc, char *argv[]) {
         if (r < 0)
                 return log_error_errno(r, "Event loop failed: %m");
 
+        /* send queries on shutdown to other servers */
+        manager_symlink_stub_to_uplink_resolv_conf();
+
         return 0;
 }