From f7101b7368dfe41dbc8b7203e06133cccb589c01 Mon Sep 17 00:00:00 2001
From: Jan Synacek <jsynacek@redhat.com>
Date: Tue, 7 Oct 2014 13:35:41 +0200
Subject: [PATCH] core: don't allow enabling if unit is masked

---
 src/shared/install.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/shared/install.c b/src/shared/install.c
index fa064c230f..945bb2748d 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -1516,6 +1516,19 @@ int unit_file_enable(
                 return r;
 
         STRV_FOREACH(i, files) {
+                UnitFileState state;
+
+                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;
+                }
+
                 r = install_info_add_auto(&c, *i);
                 if (r < 0)
                         return r;