commit 59a3dd2f5a9ae218d1064e02188d4d83a6771b01
Author: Ken Gaillot <kgaillot@redhat.com>
Date:   Fri Oct 13 11:04:50 2017 -0500

    Fix: libcrmservice: list systemd unit files, not only active units
    
    The typical use case of listing agents is to see what can be used,
    and if a systemd unit isn't active, it won't be listed by ListUnits.
    Use ListUnitFiles instead, and filter them by the types of units
    we can manage (service, mount, and socket).
    
    Closes CLBZ#5299

diff --git a/lib/services/systemd.c b/lib/services/systemd.c
index 6f3c28e65..6d139eee6 100644
--- a/lib/services/systemd.c
+++ b/lib/services/systemd.c
@@ -357,7 +357,7 @@ systemd_unit_by_name(const gchar * arg_name, svc_action_t *op)
 GList *
 systemd_unit_listall(void)
 {
-    int lpc = 0;
+    int nfiles = 0;
     GList *units = NULL;
     DBusMessageIter args;
     DBusMessageIter unit;
@@ -369,23 +369,23 @@ systemd_unit_listall(void)
     }
 
 /*
-        "  <method name=\"ListUnits\">\n"                               \
-        "   <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
+        "  <method name=\"ListUnitFiles\">\n"                               \
+        "   <arg name=\"files\" type=\"a(ss)\" direction=\"out\"/>\n" \
         "  </method>\n"                                                 \
 */
 
-    reply = systemd_call_simple_method("ListUnits");
+    reply = systemd_call_simple_method("ListUnitFiles");
     if (reply == NULL) {
         return NULL;
     }
     if (!dbus_message_iter_init(reply, &args)) {
-        crm_err("Could not list systemd units: systemd reply has no arguments");
+        crm_err("Could not list systemd unit files: systemd reply has no arguments");
         dbus_message_unref(reply);
         return NULL;
     }
     if (!pcmk_dbus_type_check(reply, &args, DBUS_TYPE_ARRAY,
                               __FUNCTION__, __LINE__)) {
-        crm_err("Could not list systemd units: systemd reply has invalid arguments");
+        crm_err("Could not list systemd unit files: systemd reply has invalid arguments");
         dbus_message_unref(reply);
         return NULL;
     }
@@ -404,21 +404,36 @@ systemd_unit_listall(void)
         }
 
         dbus_message_iter_get_basic(&elem, &value);
-        crm_trace("DBus ListUnits listed: %s", value.str);
+        crm_trace("DBus ListUnitFiles listed: %s", value.str);
         if(value.str) {
             const char *match = systemd_unit_extension(value.str);
 
             if (match) {
-                char *unit_name;
+                char *unit_name = NULL;
+                char *basename = NULL;
 
-                if (!strcmp(match, ".service")) {
-                    /* service is the "default" unit type, so strip it */
-                    unit_name = strndup(value.str, match - value.str);
+                // ListUnitFiles returns full path names
+                basename = strrchr(value.str, '/');
+                if (basename) {
+                    basename = basename + 1;
                 } else {
-                    unit_name = strdup(value.str);
+                    basename = value.str;
+                }
+
+                if (!strcmp(match, ".service")) {
+                    // Service is the "default" unit type, so strip it
+                    unit_name = strndup(basename, match - basename);
+
+                } else if (!strcmp(match, ".mount")
+                           || !strcmp(match, ".socket")) {
+                    // Only list things we can start and stop
+                    unit_name = strdup(basename);
+                }
+                if (unit_name) {
+                    nfiles++;
+                    // @TODO sort alphabetically
+                    units = g_list_prepend(units, unit_name);
                 }
-                lpc++;
-                units = g_list_append(units, unit_name);
             }
         }
         dbus_message_iter_next (&unit);
@@ -426,7 +441,7 @@ systemd_unit_listall(void)
 
     dbus_message_unref(reply);
 
-    crm_trace("Found %d systemd services", lpc);
+    crm_trace("Found %d manageable systemd unit files", nfiles);
     return units;
 }
 
