util: remove lookup_uid(), replace by uid_to_name()

So far we had two pretty much identical calls in user-util.[ch]:
lookup_uid() and uid_to_name(). Get rid of the former, in favour of the
latter, and while we are at it, rewrite it, to use getpwuid_r()
correctly, inside an allocation loop, as POSIX intended.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index 6da1398b7d..61c2c9ba40 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -2028,7 +2028,7 @@ static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userd
                 }
 
                 utmp_wall("The system shutdown has been cancelled",
-                          lookup_uid(uid), tty, logind_wall_tty_filter, m);
+                          uid_to_name(uid), tty, logind_wall_tty_filter, m);
         }
 
         return sd_bus_reply_method_return(message, "b", cancelled);
diff --git a/src/login/logind-utmp.c b/src/login/logind-utmp.c
index 80e461f2dc..9c766bcb25 100644
--- a/src/login/logind-utmp.c
+++ b/src/login/logind-utmp.c
@@ -96,7 +96,7 @@ static int warn_wall(Manager *m, usec_t n) {
                 return 0;
         }
 
-        utmp_wall(l, lookup_uid(m->scheduled_shutdown_uid),
+        utmp_wall(l, uid_to_name(m->scheduled_shutdown_uid),
                   m->scheduled_shutdown_tty, logind_wall_tty_filter, m);
 
         return 1;