busctl: do not print hint about -M if -M is already used

(Or when -H is used, since -H and -M are incompatible.)

3 files changed, 7 insertions, 5 deletions

diff --git a/src/busctl/busctl.c b/src/busctl/busctl.c
index 30a86234d9..2dbef89e4c 100644
--- a/src/busctl/busctl.c
+++ b/src/busctl/busctl.c
@@ -125,7 +125,7 @@ static int acquire_bus(bool set_monitor, sd_bus **ret) {
                 }
         }
         if (r < 0)
-                return bus_log_address_error(r);
+                return bus_log_address_error(r, arg_transport);
 
         r = sd_bus_start(bus);
         if (r < 0)
diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c
index 75e89ab5dc..8568135a4a 100644
--- a/src/shared/bus-util.c
+++ b/src/shared/bus-util.c
@@ -34,10 +34,12 @@ static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_
         return 1;
 }
 
-int bus_log_address_error(int r) {
+int bus_log_address_error(int r, BusTransport transport) {
+        bool hint = transport == BUS_TRANSPORT_LOCAL && r == -ENOMEDIUM;
+
         return log_error_errno(r,
-                               r == -ENOMEDIUM ? "Failed to set bus address: $DBUS_SESSION_BUS_ADDRESS and $XDG_RUNTIME_DIR not defined (consider using --machine=<user>@.host --user to connect to bus of other user)" :
-                                                 "Failed to set bus address: %m");
+                               hint ? "Failed to set bus address: $DBUS_SESSION_BUS_ADDRESS and $XDG_RUNTIME_DIR not defined (consider using --machine=<user>@.host --user to connect to bus of other user)" :
+                                      "Failed to set bus address: %m");
 }
 
 int bus_log_connect_error(int r) {
diff --git a/src/shared/bus-util.h b/src/shared/bus-util.h
index 3a65851fa5..4f0d186f95 100644
--- a/src/shared/bus-util.h
+++ b/src/shared/bus-util.h
@@ -39,7 +39,7 @@ int bus_connect_user_systemd(sd_bus **_bus);
 int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **bus);
 int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus);
 
-int bus_log_address_error(int r);
+int bus_log_address_error(int r, BusTransport transport);
 int bus_log_connect_error(int r);
 
 #define bus_log_parse_error(r)                                  \