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From e360c720533dccac39d8b88510b15c21a944b042 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 13 Nov 2015 18:46:50 +0100
Subject: [PATCH] core: enable transient unit support for slice units
Cherry-picked from: 17f62e9bd00f5fefd486475861b06d3ec6b7ee10
Resolves: #1370299
---
src/core/dbus-manager.c | 13 ++++++++++++-
src/core/slice.c | 1 +
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/src/core/dbus-manager.c b/src/core/dbus-manager.c
index 9eef290ca..8d3758ac7 100644
--- a/src/core/dbus-manager.c
+++ b/src/core/dbus-manager.c
@@ -633,7 +633,18 @@ static int transient_unit_from_message(
if (r < 0)
return r;
- if (u->load_state != UNIT_NOT_FOUND ||
+ /* Check if the unit already exists or is already referenced,
+ * in a number of different ways. Note that to cater for unit
+ * types such as slice, we are generally fine with units that
+ * are marked UNIT_LOADED even even though nothing was
+ * actually loaded, as those unit types don't require a file
+ * on disk to validly load. */
+
+ if (!IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_LOADED) ||
+ u->fragment_path ||
+ u->source_path ||
+ !strv_isempty(u->dropin_paths) ||
+ u->refs ||
set_size(u->dependencies[UNIT_REFERENCED_BY]) > 0)
return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
diff --git a/src/core/slice.c b/src/core/slice.c
index 61ff9d331..9154558b7 100644
--- a/src/core/slice.c
+++ b/src/core/slice.c
@@ -272,6 +272,7 @@ const UnitVTable slice_vtable = {
.no_alias = true,
.no_instances = true,
+ .can_transient = true,
.load = slice_load,