systemd: add upstream patch

packages/sysutils/systemd/patches/systemd-01_avoid-prematurely-rejecting-.patch

@@ -0,0 +1,36 @@
+From 0ffce503cd6e5a5ff5ba5cd1cc23684cfb8bb9e3 Mon Sep 17 00:00:00 2001
+From: Dave Reisner <dreisner@archlinux.org>
+Date: Thu, 30 Oct 2014 20:12:05 -0400
+Subject: shared/install: avoid prematurely rejecting "missing" units
+
+f7101b7368df copied some logic to prevent enabling masked units, but
+also added a check which causes attempts to enable templated units to
+fail. Since we know the logic beyond this check will properly handle
+units which truly do not exist, we can rely on the unit file state
+comparison to suffice for expressing the intent of f7101b7368df.
+
+ref: https://bugs.archlinux.org/task/42616
+
+diff --git a/src/shared/install.c b/src/shared/install.c
+index 035b44c..cab93e8 100644
+--- a/src/shared/install.c
++++ b/src/shared/install.c
+@@ -1620,12 +1620,10 @@ int unit_file_enable(
+         STRV_FOREACH(i, files) {
+                 UnitFileState state;
+ 
++                /* We only want to know if this unit is masked, so we ignore
++                 * errors from unit_file_get_state, deferring other checks.
++                 * This allows templated units to be enabled on the fly. */
+                 state = unit_file_get_state(scope, root_dir, *i);
+-                if (state < 0) {
+-                        log_error("Failed to get unit file state for %s: %s", *i, strerror(-state));
+-                        return state;
+-                }
+-
+                 if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) {
+                         log_error("Failed to enable unit: Unit %s is masked", *i);
+                         return -ENOTSUP;
+-- 
+cgit v0.10.2
+