sd-bus: rename sd_bus_get_owner_id() → sd_bus_get_bus_id()

The ID returned really doesn't identify the owner, but the bus instance,
hence fix this misnaming.

Also, update "busctl status" to show the ID in its output.

src/bus-proxyd/bus-proxyd.c

@@ -625,7 +625,7 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m, Policy *polic
                 if (!sd_bus_message_has_signature(m, ""))
                         return synthetic_reply_method_error(m, &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INVALID_ARGS, "Invalid parameters"));
 
-                r = sd_bus_get_owner_id(a, &server_id);
+                r = sd_bus_get_bus_id(a, &server_id);
                 if (r < 0)
                         return synthetic_reply_method_errno(m, r, NULL);
 
@@ -1354,7 +1354,7 @@ int main(int argc, char *argv[]) {
                 goto finish;
         }
 
-        r = sd_bus_get_owner_id(a, &server_id);
+        r = sd_bus_get_bus_id(a, &server_id);
         if (r < 0) {
                 log_error_errno(r, "Failed to get server ID: %m");
                 goto finish;

src/libsystemd/libsystemd.sym.m4

@@ -190,7 +190,7 @@ global:
         sd_bus_unref;
         sd_bus_is_open;
         sd_bus_can_send;
-        sd_bus_get_owner_id;
+        sd_bus_get_bus_id;
         sd_bus_get_owner_creds;
         sd_bus_get_description;
         sd_bus_send;

src/libsystemd/sd-bus/busctl.c

@@ -1177,11 +1177,16 @@ static int status(sd_bus *bus, char *argv[]) {
                                         _SD_BUS_CREDS_ALL);
         } else {
                 const char *scope;
+                sd_id128_t bus_id;
 
                 r = sd_bus_get_scope(bus, &scope);
                 if (r >= 0)
                         printf("Scope=%s%s%s\n", ansi_highlight(), scope, ansi_highlight_off());
 
+                r = sd_bus_get_bus_id(bus, &bus_id);
+                if (r >= 0)
+                        printf("BusID=%s" SD_ID128_FORMAT_STR "%s\n", ansi_highlight(), SD_ID128_FORMAT_VAL(bus_id), ansi_highlight_off());
+
                 r = sd_bus_get_owner_creds(
                                 bus,
                                 (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL,

src/libsystemd/sd-bus/sd-bus.c

@@ -1442,7 +1442,7 @@ _public_ int sd_bus_can_send(sd_bus *bus, char type) {
         return bus_type_is_valid(type);
 }
 
-_public_ int sd_bus_get_owner_id(sd_bus *bus, sd_id128_t *id) {
+_public_ int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id) {
         int r;
 
         assert_return(bus, -EINVAL);

src/libsystemd/sd-bus/test-bus-chat.c

@@ -76,7 +76,7 @@ static int server_init(sd_bus **_bus) {
                 goto fail;
         }
 
-        r = sd_bus_get_owner_id(bus, &id);
+        r = sd_bus_get_bus_id(bus, &id);
         if (r < 0) {
                 log_error_errno(r, "Failed to get server ID: %m");
                 goto fail;

src/systemd/sd-bus.h

@@ -138,7 +138,7 @@ sd_bus *sd_bus_unref(sd_bus *bus);
 
 int sd_bus_is_open(sd_bus *bus);
 int sd_bus_can_send(sd_bus *bus, char type);
-int sd_bus_get_owner_id(sd_bus *bus, sd_id128_t *id);
+int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id);
 int sd_bus_get_owner_creds(sd_bus *bus, uint64_t creds_mask, sd_bus_creds **ret);
 int sd_bus_get_scope(sd_bus *bus, const char **scope);
 int sd_bus_get_description(sd_bus *bus, const char **description);