shared: split out code for adding multiple names to sd_bus_track object

Let's introduce a new call bus_track_add_name_many() that adds a string list to
a tracking object.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c
index e7b1b1cb20..6aebe18fc0 100644
--- a/src/shared/bus-util.c
+++ b/src/shared/bus-util.c
@@ -1583,3 +1583,22 @@ int bus_property_get_rlimit(
 
         return sd_bus_message_append(reply, "t", u);
 }
+
+int bus_track_add_name_many(sd_bus_track *t, char **l) {
+        int r = 0;
+        char **i;
+
+        assert(t);
+
+        /* Continues adding after failure, and returns the first failure. */
+
+        STRV_FOREACH(i, l) {
+                int k;
+
+                k = sd_bus_track_add_name(t, *i);
+                if (k < 0 && r >= 0)
+                        r = k;
+        }
+
+        return r;
+}